Thomas D. Conrad & Margaret Joan Conrad ( 2023 )


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  •                         United States Tax Court
    
    T.C. Memo. 2023-100
    THOMAS D. CONRAD AND MARGARET JOAN CONRAD,
    Petitioners
    v.
    COMMISSIONER OF INTERNAL REVENUE,
    Respondent
    —————
    Docket No. 7692-13.                                                      Filed August 7, 2023.
    —————
    Thomas D. Conrad, pro se.
    Courtney S. Bacon, for respondent.
    TABLE OF CONTENTS
    MEMORANDUM FINDINGS OF FACT AND OPINION ..................... 4
    FINDINGS OF FACT .............................................................................. 6
    I.    FMC ownership; FMC’s management of hedge fund; FMC’s
    use of the Conrads’ condominium and house; FMC’s yacht;
    FMC’s airplane ................................................................................. 7
    II.   Tax reporting .................................................................................. 
    12 A. 2008
     returns ............................................................................ 12
    1.     FMC’s 2008 tax return .................................................... 12
    2.     The Conrads’ 2008 tax return ......................................... 
    14 B. 2009
     returns ............................................................................ 15
    1.     FMC’s 2009 tax return .................................................... 15
    Served 08/07/23
    2
    [*2]          2.     The Conrads’ 2009 tax return ......................................... 17
    III. Notice of deficiency and determination of accuracy-related
    penalties under section 6662(a) ..................................................... 19
    A.     Audit and penalty approval form ........................................... 19
    B.     Notice of deficiency ................................................................. 20
    1.     2008 .................................................................................. 20
    2.     2009 .................................................................................. 22
    IV. Trial proceedings ............................................................................ 24
    OPINION ................................................................................................ 26
    I.     It is unnecessary to determine who has the burden of proof
    regarding deficiencies. .................................................................... 27
    II.    FMC cannot deduct depreciation for its yacht and its airplane
    but can deduct expenses for storage, maintenance, and
    upkeep of both and for the costs of Dr. Conrad’s flying
    lessons. ............................................................................................ 27
    A.     We sustain the disallowance of depreciation deductions
    FMC claimed for its yacht. ..................................................... 28
    B.     The expenses for the storage, maintenance, and upkeep
    of FMC’s yacht are deductible. ............................................... 28
    C.     FMC cannot deduct depreciation for its airplane. ................. 38
    D.     FMC can deduct expenses for the storage, maintenance,
    and upkeep of its airplane, as well as the cost of Dr.
    Conrad’s flying lessons............................................................ 41
    E.     A summary of the allowed deductions related to the
    yacht and airplane for 2008 and 2009.................................... 44
    III. For both 2008 and 2009 the Conrads can deduct portions of
    the expenses related to their residences. ....................................... 
    44 A. 2008
     ......................................................................................... 56
    3
    [*3]         1.     The Conrads’ 2008 tax return ......................................... 58
    2.     The notice of deficiency ................................................... 59
    3.     The IRS’s primary litigating position ............................. 60
    4.     The IRS’s alternative litigating position ........................ 61
    5.     The Court’s conclusion .................................................... 
    61 B. 2009
     ......................................................................................... 66
    1.     The Conrads’ 2009 rental income from FMC ................. 68
    2.     Residence deductions....................................................... 68
    a.     The Conrads’ 2009 tax return.................................. 69
    b.     The notice of deficiency ............................................ 71
    c.     The IRS’s primary and alternative litigating
    positions.................................................................... 72
    d.     The Court’s conclusion ............................................. 72
    IV. The interest deduction claimed on Mrs. Conrad’s 2009
    Schedule C is deductible for FMC, not Mrs. Conrad..................... 77
    V.     The Conrads’ liability for section 6662 accuracy-related
    penalties for the years at issue ...................................................... 78
    A.    The IRS bears the burden of production, and Dr. Conrad
    bears the burden of persuasion. ............................................. 80
    B.    The requirements of section 6751(b)(1) are met for a
    substantial understatement but not for negligence. ............. 81
    1.     Substantial Understatement .......................................... 81
    2.     Negligence ........................................................................ 82
    C.    The Conrads are liable for penalties for substantial
    understatements if the parties’ Rule 155 computations
    show that the Conrads substantially understated their
    tax liabilities for 2008 and 2009 (but no penalty is
    imposed on the portions of the underpayments
    4
    [*4]       attributable to the deductions claimed for depreciation
    of the yacht and the airplane because these portions are
    attributable to reasonable cause and good faith). ................. 84
    MEMORANDUM FINDINGS OF FACT AND OPINION
    MORRISON, Judge: Respondent (who we refer to as the IRS)
    issued a notice of deficiency to petitioners, Thomas D. Conrad (Dr.
    Conrad) 1 and Margaret Joan Conrad (Mrs. Conrad), for 2008 and 2009,
    the tax years at issue. The IRS determined tax deficiencies of $134,250
    for 2008 and $73,132 for 2009 and accuracy-related penalties under
    section 6662(a)2 of $26,850 for 2008 and $14,626 for 2009. The Conrads
    timely filed a Petition for redetermination under section 6213(a). We
    have jurisdiction under section 6214(a). 3
    The parties have resolved some issues through concessions. 4 The
    remaining issues and our holdings are summarized below.
    1. FMC’s deductions related to its yacht and its airplane. The Conrads
    were 51.25% owners of Financial Management Corporation (FMC), a
    1 Dr. Conrad has a Ph.D. in business.
    2 Unless otherwise indicated, statutory references are to the Internal Revenue
    Code, Title 26 U.S.C. (Code), in effect at all relevant times, regulation references are
    to the Code of Federal Regulations, Title 26 (Treas. Reg.), in effect at all relevant times,
    and Rule references are to the Tax Court Rules of Practice and Procedure. All dollar
    amounts are rounded to the nearest dollar.
    3 Section 7482(b) governs the venue for appeal from a decision of this Court. In
    general, if a petitioner is an individual taxpayer, the appellate venue is the circuit in
    which the petitioner resided when the petition was filed. § 7482(b)(1)(A). If, however,
    the petitioner does not reside within the United States at the time the petition is filed,
    the appellate venue will be the U.S. Court of Appeals for the D.C. Circuit unless the
    parties agree to one of the other circuit courts (except for the U.S. Court of Appeals for
    the Federal Circuit). § 7482(b)(1) (flush language). The parties stipulated that the
    Conrads resided in Panama when they filed their Petition on April 5, 2013. An appeal
    of the decision in this case would thus go to the D.C. Circuit unless the parties agreed
    to one of the other regional circuits. See § 7482(a) and (b)(1) (flush language) and (2);
    
    28 U.S.C. § 1294
    .
    4 The Conrads concede that they failed to report (1) a $262,489 taxable
    distribution from an IRA for 2008 and (2) $5,520 and $1,535 of rental income for 2008
    and 2009, respectively. These conceded rental income amounts are unrelated to the
    Conrads’ renting of portions of their residences during 2008 and 2009 (which remains
    at issue in this case). The IRS concedes that the Conrads (1) did not receive $6 of
    royalty income in 2009 and (2) substantiated $3,330 of rental expenses related to the
    2008 rental income that they failed to report.
    5
    [*5] subchapter S corporation. FMC owned a yacht and an airplane
    during the years at issue. On its Forms 1120S, U.S. Income Tax
    Return for an S Corporation, FMC deducted depreciation for the
    yacht and the airplane in the total amounts of $959,265 (for 2008)
    and $281,347 (for 2009). We sustain the IRS’s disallowance of the
    depreciation deductions. FMC also deducted nondepreciation
    expenses for the yacht and the airplane. For 2008 FMC deducted
    $256,934 for the storage, maintenance, and upkeep of the yacht and
    the airplane (an amount that also included the cost of training Dr.
    Conrad to fly the airplane). For 2009 FMC deducted $21,893 for the
    storage, maintenance, and upkeep of the yacht and the airplane. We
    allow these nondepreciation deductions.
    2. The Conrads’ deductions related to the rental use of their homes. In
    addition to being 51.25% shareholders in FMC, during the years at
    issue Dr. Conrad provided management services to FMC, and in 2009
    Mrs. Conrad provided accounting services to FMC. Both Dr. Conrad
    and Mrs. Conrad provided their services as independent contractors.
    During the years at issue the Conrads rented portions of their
    residences, a condominium in Florida from 2008 until July 2009 and
    a house in Georgia for the remainder of 2009, to FMC. On Dr.
    Conrad’s Schedule C, Profit or Loss From Business, attached to their
    tax return for 2008, the Conrads deducted $222,207 for the business
    use of the condominium. On Dr. Conrad’s 2009 Schedule C the
    Conrads deducted $288,000 for the business use of the condominium
    and the house. On Mrs. Conrad’s 2009 Schedule C the Conrads
    deducted $48,542 for total condominium fees and $43,200 for total
    rent paid for the house. The notice of deficiency determined that in
    2008 the condominium was not Dr. Conrad’s principal place of
    business and consequently disallowed the $222,207 deduction for the
    expenses of the business use of the condominium. On the other hand,
    the notice of deficiency allowed an $18,443 deduction from Schedule
    E, Supplemental Income and Loss (a deduction the Conrads had not
    claimed on that schedule), for renting the condominium to FMC. The
    notice of deficiency determined that in 2009 neither the
    condominium nor the house was Dr. Conrad’s principal place of
    business and consequently disallowed the $288,000 deduction for the
    expenses of the business use of these residences. The notice of
    deficiency also determined that the condominium fees and rent for
    the house were not ordinary and necessary expenses of Mrs. Conrad’s
    accounting business and consequently disallowed the $48,542
    deduction for condominium fees and the $43,200 deduction for rent.
    However, the notice of deficiency allowed a $3,885 Schedule C
    6
    [*6] deduction for Mrs. Conrad’s use of the condominium and the house
    for her accounting business. The IRS also argues that the Conrads
    failed to report the $104,333 of rental income received from FMC in
    2009. For 2008 we hold that the Conrads are entitled to (1) $184,010
    of mortgage interest as an itemized deduction and (2) $144,000 of
    their mortgage interest as a rental-property deduction. For 2009 we
    hold that the Conrads are entitled to (1) $61,983 of mortgage interest
    and real estate taxes as itemized deductions; (2) $100,448 of their
    residence expenses as rental-property deductions; and (3) $3,885 of
    their residence expenses as a business-use-of-home deduction on
    Mrs. Conrad’s Schedule C (consistent with the concession in the
    notice of deficiency). We further hold that the Conrads reported the
    $104,333 of rental income from FMC on their 2009 return.
    3. Interest expenses incurred on debt related to FMC’s yacht. On Mrs.
    Conrad’s Schedule C for 2009 the Conrads deducted $7,582 of
    interest related to FMC’s yacht. We hold that the $7,582 is deductible
    for FMC at the S corporation level. 5 As the Conrads are 51.25%
    owners of FMC, their share of the $7,582 interest deduction is $3,886.
    4. Accuracy-related penalties. The notice of deficiency determined that
    the Conrads were liable for accuracy-related penalties under section
    6662(a) for the years at issue. We hold that the Conrads are liable for
    an accuracy-related penalty on a portion of their underpayment for
    2008 and a portion of their underpayment for 2009 if the parties’ Rule
    155 computations show that the Conrads substantially understated
    their income tax liabilities for the years at issue. In any event, the
    Conrads are not liable for any penalties as to the portions of the
    underpayments attributable to depreciation deductions for the yacht
    and the airplane. For those portions the Conrads had reasonable
    cause and acted in good faith.
    FINDINGS OF FACT
    Some of the facts have been stipulated and are so found. The
    Stipulation of Facts and the Supplemental Stipulation of Facts
    (hereinafter Supplemental Stipulation) are incorporated herein by
    reference.
    5 Had FMC claimed the interest deduction originally, it would have been
    claimed on its 2009 Form 1120S.
    7
    [*7] I.       FMC ownership; FMC’s management of hedge fund; FMC’s
    use of the Conrads’ condominium and house; FMC’s yacht;
    FMC’s airplane
    Dr. Conrad and Mrs. Conrad collectively owned 51.25% of FMC,
    a subchapter S corporation during both years at issue. 6 FMC was the
    general partner and general manager of World Opportunity Master
    Fund (WOMF), a hedge fund that managed investments through its 15
    managers who were located in the United States and six other countries.
    For its services to WOMF, FMC received annual compensation equal to
    2% of WOMF’s total assets. Dr. Conrad was the president of FMC and
    made executive decisions on its behalf, such as the hiring and firing of
    WOMF’s managers. Dr. Conrad contends that he was an independent
    contractor of FMC rather than an employee. 7 In its notice of deficiency, 8
    Answer to the Conrads’ Petition, and posttrial briefs, the IRS does not
    contend that Dr. Conrad was an employee of FMC rather than an
    independent contractor. Accordingly, we find that Dr. Conrad was not
    an employee of FMC.
    Dr. Conrad organized FMC in 1961 and has worked for FMC on
    and off since that time. In 2003 the Conrads took out a mortgage to buy
    a 17-room, 7,500 square foot condominium in Florida. The Conrads lived
    in the condominium and rented a portion of the condominium to FMC
    for FMC’s office use. FMC paid the Conrads rent for use of this space.
    However, this space was never exclusively used by FMC. The Conrads’
    extended family would occasionally visit the Conrads at the
    6 We need not determine who owned the remaining 48.75% of FMC during 2008
    and 2009 because the identities of the other shareholders do not affect our resolution
    of this case.
    7 This assertion is consistent with the way that the Conrads and FMC reported
    Dr. Conrad’s compensation from FMC during the years at issue, i.e., (1) FMC issued
    Forms 1099–MISC, Miscellaneous Income, to Dr. Conrad instead of Forms W–2, Wage
    and Tax Statement; (2) FMC did not withhold income tax or employee FICA tax from
    its payments to Dr. Conrad, nor did it pay employer FICA tax to the IRS for its
    compensation payments to him; and (3) Dr. Conrad reported those payments as
    compensation on his Schedules C.
    8 In the notice of deficiency, the IRS disallowed deductions claimed on Dr.
    Conrad’s Schedule C, the portion of a return on which a taxpayer reports independent
    contractor income, and the IRS determined an increase in Dr. Conrad’s self-
    employment income corresponding to the amount of the disallowed deductions. Thus,
    the notice of deficiency implicitly treated Dr. Conrad as an independent contractor of
    FMC, not as an employee. See § 1402(c)(3) (defining trade or business for the purpose
    of computing self-employment income as excluding the performance of services as an
    employee). Nothing in the Answer claims that Dr. Conrad is an employee of FMC.
    8
    [*8] condominium during the years at issue. While at the condominium,
    the extended family members made personal use of the rooms located in
    portions set aside for FMC’s office use. The condominium was used in
    the manner described in this paragraph from its purchase in 2003 until
    its sale in June 2009.
    In 2003 FMC bought a yacht. Its purpose for buying the yacht was
    to allow Dr. Conrad, on behalf of FMC, to travel up and down the East
    Coast of the United States to meet current and prospective clients of
    WOMF. The yacht was 65 feet long. It had three bedrooms, three
    bathrooms, an office, and a living area.
    During the summer of 2003 the Conrads took a 71-day round trip
    on FMC’s yacht (on behalf of FMC) between Florida and Maine, stopping
    at cities along the way to meet with current and prospective clients of
    WOMF. The guests engaged in such activities as steering, navigating,
    cleaning, and fueling the yacht because FMC did not hire a professional
    crew for these tasks. Over the 71-day trip, approximately 20 guests
    stayed overnight aboard the yacht. Each guest stayed on the yacht
    between three and ten nights. While on the yacht, Dr. Conrad met and
    entertained the guests. Dr. Conrad also used the onboard office every
    day of the trip for work as president of FMC. When the yacht returned
    to Florida at the end of the trip in the summer of 2003, FMC listed the
    yacht for sale. Neither FMC nor the Conrads ever used the yacht again.
    For most of his life Dr. Conrad had used airplanes for traveling
    on distant business trips because of a condition which made it difficult
    for him to drive a car over long distances. For 40 years Dr. Conrad
    owned 9 and personally flew dozens of airplanes. He flew these airplanes
    primarily to solicit and acquire customers across the United States.
    Occasionally, Dr. Conrad would also lease these airplanes to third
    parties; the leases were particularly profitable for him in the 1990s.
    In early 2008 FMC acquired an Eclipse airplane for
    approximately $1 million. Dr. Conrad intended to use the airplane in
    FMC’s business by piloting it himself as he had done with his previous
    airplanes. He traveled to Albuquerque, New Mexico, to take possession
    of the airplane on FMC’s behalf and to be trained to fly it. Dr. Conrad
    underwent a training program in Albuquerque to gain his license to fly
    9 Dr. Conrad testified that “of the last 40 years, [he] actually owned 27
    airplanes.” It is unclear whether Dr. Conrad meant that he personally owned these
    airplanes or that he owned the airplanes through companies he owned. We make no
    finding as to who owned the airplanes other than FMC’s airplane.
    9
    [*9] the airplane but failed the program. Still determined to earn his
    license to pilot the airplane, Dr. Conrad had the airplane flown during
    the early summer of 2008 from Albuquerque to Florida, where the
    Conrads lived at the time. Dr. Conrad hoped to continue his training
    closer to home. However, shortly after returning to Florida around June
    2008, Dr. Conrad traveled to Europe where he suffered the first of a
    series of three heart attacks. For 15 months Dr. Conrad was in such poor
    health that he was prevented from continuing flight training.
    During 2008 FMC still owned the airplane and continued to incur
    expenses for its storage, maintenance, and upkeep. During 2008 FMC
    also incurred expenses for Dr. Conrad’s flying lessons. FMC rented its
    airplane to third-party lessees during 2008 for their short-term use. The
    record does not reveal how much rent FMC received.
    During 2008 FMC still owned the yacht and continued to incur
    expenses for its storage, maintenance, and upkeep.
    During 2008 FMC paid Dr. Conrad $222,207 for his management
    services as president of FMC.
    In 2008 the Conrads rented a portion of the condominium to FMC
    for FMC’s office use. 10 FMC paid the Conrads $144,000 of rent in 2008.
    FMC’s payment for rent was in addition to the $222,207 that FMC paid
    Dr. Conrad for his management services as president of FMC.
    10   Dr. Conrad offered into evidence what appears to be a drawing that
    purportedly shows the individual rooms within the condominium. The drawing is
    similar to a floor plan in that it shows each individual room within the house (e.g.,
    “master bedroom”, “master bathroom”, etc.). In the margins next to the drawing, Dr.
    Conrad wrote that the condominium’s total area was 7,500 square feet. However, the
    drawing does not provide any information allowing us to calculate the square footage
    of each room. On the drawing, Dr. Conrad shaded 13 of the rooms that were
    purportedly used by FMC and left unshaded 4 rooms purportedly used solely by the
    Conrads for personal purposes. For tax purposes the Conrads divided their expenses
    that were claimed on Dr. Conrad’s 2008 and 2009 Forms 8829, Expenses for Business
    Use of Your Home, relating to the condominium (e.g., mortgage interest, real estate
    taxes, utilities) evenly between their personal use of the condominium and FMC use.
    As will be discussed infra note 11, the Conrads used the same allocation method for
    expenses reported on Dr. Conrad’s 2009 Form 8829 that they incurred relating to the
    house that they rented and used as their personal residence during the second half of
    2009. For reasons discussed infra OPINION, Part III.A.5 and III.B.2.d, we accept the
    Conrads’ allocation method for dividing the condominium expenses between their
    personal use and FMC use.
    10
    [*10] During 2008 the Conrads paid mortgage interest expenses related
    to the condominium of $328,010.
    In July 2009 the Conrads moved out of the condominium and into
    a rental house in Georgia. As they had done with the condominium, the
    Conrads leased a portion of the house to FMC for FMC’s office use. 11 The
    record does not reveal whether any of the Conrads’ extended family used
    the rented portion of the house for personal purposes.
    The Conrads received from FMC total rent of $104,333 in 2009,
    but the record does not reveal how much of this rent was for the use of
    the condominium and how much was for the use of the house. For
    reasons discussed infra note 44, we need not make a finding about such
    attributions.
    The Conrads paid the following expenses for the condominium
    and the house in 2009:
    11 Dr. Conrad offered into evidence a floor plan of the house. It shows that the
    house had (1) a first floor, (2) a basement, (3) a covered porch, and (4) two garages. The
    total combined area of the first floor and basement was 8,495.6 square feet. Including
    the covered porch and the two garages, the floor plan shows that the total area of the
    house was 9,662.1 square feet. Dr. Conrad highlighted portions of the floor plan that
    purportedly show the areas that the Conrads rented to FMC. We are not able to
    calculate the exact total area of the house rented to FMC because the floor plan does
    not show all the measurements needed to complete the calculation. We note, however,
    that the highlighted portions appear to have been approximately half of the house. We
    need not determine the exact total area of the house that was rented to FMC. For tax
    purposes the Conrads allocated half of the house expenses that were reported on Dr.
    Conrad’s 2009 Form 8829 to FMC use and the other half of the house expenses to their
    personal use. For reasons discussed infra OPINION, Part III.B.2.d, we accept the
    Conrads’ allocation method for dividing the house expenses between their personal use
    and FMC use.
    11
    [*11]          Type of expense   Related to house or    Amount
    condominium         of expense
    Mortgage interest     Condominium           $81,889
    Real estate taxes     Condominium            42,076
    Condominium fees      Condominium            24,271
    Rent                      House              43,200
    Insurance               Unknown               3,526
    Utilities               Unknown               7,510
    Other expenses          Unknown              61,812
    These last three expenses were attributable to the residences, but the
    record does not reveal which of these expenses are attributable to only
    the condominium, to only the house, or to both properties. For reasons
    discussed infra note 44, we need not make a finding about such
    attributions.
    In 2009 Mrs. Conrad operated an accounting sole proprietorship.
    There is little detail in the record about her accounting business. Dr.
    Conrad credibly testified that Mrs. Conrad provided accounting services
    to FMC in 2009 as an independent contractor.
    In 2009 FMC paid the Conrads (1) $104,333 of rent, (2) $183,667
    for Dr. Conrad’s management services as president of FMC, and
    (3) $81,267 for Mrs. Conrad’s accounting services to FMC.
    During 2009 FMC still owned the yacht and continued to incur
    expenses for its storage, maintenance, and upkeep. FMC did not sell the
    yacht until after 2009. The record does not reveal the year of the sale.
    During 2009 FMC still owned its airplane and continued to incur
    expenses for its storage, maintenance, and upkeep. FMC also rented its
    airplane to third-party lessees during 2009 for their short-term use. The
    record does not reveal how much rent FMC received.
    In January 2010 Dr. Conrad resumed his attempts to obtain his
    license to pilot FMC’s airplane after recovering from the heart attacks
    12
    [*12] that he suffered beginning in June 2008; however, he again failed
    to obtain his license. This being his second failure, in 2010 Dr. Conrad
    abandoned his efforts to obtain a license to pilot the airplane himself.
    Few pilots were licensed to fly the airplane. As a result, it was
    impractical to have FMC regularly hire pilots to operate it. In 2010 FMC
    sold it.
    II.   Tax reporting
    A.     2008 returns
    1.    FMC’s 2008 tax return
    For 2008 FMC filed Form 1120S claiming $970,370 of
    depreciation deductions for all its assets. The parties have stipulated
    that of the $970,370 in total depreciation claimed by FMC, $959,265
    related to the yacht and the airplane. The stipulation does not state how
    much of the $959,265 related to the yacht versus the airplane. We need
    not determine how much of the $959,265 relates to the yacht versus the
    airplane because we hold that for 2008 FMC is not entitled to deduct
    depreciation for either asset. See infra OPINION, Part II.A and II.C.
    FMC’s 2008 Form 1120S also deducted $761,576 on line 19, Other
    deductions. A statement included in the return, “TY 2008 Other
    Deductions Schedule,” broke the $761,576 into various categories,
    including $78,017 for “marine expense” and $178,917 for “aviation
    expense.” Paragraph 18 of the Supplemental Stipulation states that
    FMC “took” a deduction of $256,934 for storage, maintenance, and
    upkeep of both FMC’s airplane and yacht. Arithmetically, $256,934 is
    the sum of $78,017 (the amount reported as “marine expense”) and
    $178,917 (the amount reported as “aviation expense”). This equality
    implies that the $256,934 deduction referred to in paragraph 18 of the
    Supplemental Stipulation consists of $78,017 for the storage,
    maintenance, and upkeep of the yacht and $178,917 for the storage,
    maintenance, and upkeep of the airplane.
    However, the IRS proposed a finding of fact in its opening brief
    that the $256,934 deduction referred to in paragraph 18 of the
    Supplemental Stipulation included the expenses of flying lessons. Dr.
    Conrad did not object to this proposed finding of fact. Furthermore, the
    proposition that the $256,934 deduction included the flying-lessons
    expense is consistent with Dr. Conrad’s credible testimony that FMC
    deducted the flying-lessons expense on its Form 1120S for 2008.
    Although Dr. Conrad did not testify where on its return FMC reported
    13
    [*13] the expense for flying lessons, it would make sense for that
    expense to have been included with the $256,934 deduction because one
    of the two components of the $256,934 deduction was “aviation
    expenses.” It is therefore appropriate for us to recognize that the
    $256,934 amount referred to in paragraph 18 of the Supplemental
    Stipulation includes the expense for flying lessons even though that
    paragraph states that the amount comprises only the expenses of
    storage, maintenance, and upkeep of FMC’s airplane and yacht. See
    Rule 91(e) (stating that the Court will permit a party to contradict a
    stipulation “if justice requires”). We therefore find that the $256,934
    amount deducted by FMC comprises (1) the cost of storage,
    maintenance, and upkeep of FMC’s yacht and airplane and (2) the cost
    of Dr. Conrad’s flying lessons.
    We cannot conclusively determine how much of the $256,934
    deduction referred to in paragraph 18 of the Supplemental Stipulation
    was for flying lessons. We need not make this determination, for two
    reasons. First, we hold that the IRS has waived any argument that the
    storage, maintenance, and upkeep expenses of $256,934 for the yacht
    and the airplane (and flying lessons) were not incurred. See infra
    OPINION, Part II.B and II.D. Second, we hold that for 2008 the entire
    amount of $256,934 for the storage, maintenance, and upkeep of FMC’s
    yacht and airplane (as well as for flying lessons) is deductible. See id.
    On its 2008 Form 1120S, FMC deducted $1,197 as an interest
    expense on line 13. It is unclear from the return whether this amount is
    intended to correspond to an interest expense related to the yacht. 12 Also
    on its Form 1120S, FMC deducted $144,000 on line 11 as “Rents.” This
    $144,000 payment is for FMC’s renting of a portion of the Conrads’
    condominium.
    Overall, FMC reported an “ordinary business loss” of $1,258,079
    for 2008 on line 21 of its 2008 Form 1120S. The computation of this
    amount on the return included the $959,265 of depreciation deductions
    related to the yacht and the airplane and the $256,934 for the storage,
    maintenance, and upkeep of FMC’s yacht and airplane (as well as for
    flying lessons).
    12 The deductibility of the $1,197 of interest is not at issue because the notice
    of deficiency did not disallow the $1,197 of interest deductions and because the
    Conrads do not contend in their Petition that FMC underreported its interest-expense
    deduction and that the correct amount of the deduction was greater than $1,197.
    14
    [*14]           2.      The Conrads’ 2008 tax return
    For 2008 the Conrads filed a joint return. They did not report any
    wages or salaries on their Form 1040, U.S. Individual Income Tax
    Return, for compensation for Dr. Conrad’s services as president of FMC.
    Nor did they claim unreimbursed employee business-expense
    deductions on their Schedule A, Itemized Deductions, for Dr. Conrad’s
    role as president of FMC. The Conrads reported income of $222,207 on
    Dr. Conrad’s 2008 Schedule C for his services as president of FMC. 13
    They also reported rental income of $144,000 on their 2008 Schedule E
    for their renting of the condominium to FMC.
    On their 2008 Schedule A the Conrads deducted home mortgage
    interest of $216,556. On Dr. Conrad’s 2008 Schedule C the Conrads
    reported a deduction for the “business use of your home” of $222,207.
    The Form 8829 attached to Dr. Conrad’s Schedule C shows that the
    $222,207 amount was computed as follows: (1) the Conrads reported
    that they paid $164,006 of mortgage interest on the condominium
    allocable to Dr. Conrad’s sole proprietorship; (2) further condominium
    deductions from business use were limited to $58,201; (3) there was a
    $114,520 operating-expense carryforward from 2007 related to business
    use of residences; (4) the allowable corresponding deduction was
    $58,201; (5) further deductions for business use of the condominium
    were limited to zero; (6) the depreciation expense for business use of the
    condominium for 2008 was $72,724; (7) the carryforward of depreciation
    expense and excess casualty loss for business use from 2007 was
    $314,667; (8) there was an operating-expense carryforward to 2009 of
    $56,319; and (9) there was a carryforward of depreciation expense and
    excess casualty loss to 2009 of $387,391. Adding the $216,556 of
    mortgage interest reported on the Conrads’ Schedule A and the $164,006
    of mortgage interest reported on Dr. Conrad’s Schedule C, the Conrads
    13 It is unclear where on the Form 1120S FMC deducted the $222,207 of
    compensation paid to Dr. Conrad for his management services. Line 7 of its Form
    1120S, Compensation of officers, is blank. As mentioned supra, FMC deducted
    $761,576 on line 19, Other deductions. FMC’s Form 1120S includes a TY 2008 Other
    Deductions Schedule that provides an itemization of these other deductions. Among
    the expenses making up the other deductions is “Professional Services” of $264,570.
    This is the only specific deduction claimed on FMC’s return that is large enough to
    include the $222,207 of compensation paid to Dr. Conrad, whether on the TY 2008
    Other Deductions Schedule or anywhere else on FMC’s 2008 Form 1120S (aside from
    depreciation). It follows that if FMC deducted the $222,207 paid to Dr. Conrad, it likely
    did so on line 19, Other deductions.
    15
    [*15] claimed a total mortgage interest deduction of $380,562 in 2008
    despite having paid only $328,010.
    On their 2008 Schedule E the Conrads deducted $644,816 for
    their 51.25% share of FMC’s ordinary business loss of $1,258,079. This
    $644,816 includes the Conrads’ proportional share of FMC’s claimed
    depreciation deductions for the yacht and the airplane and of FMC’s
    claimed deductions for storage, maintenance, and upkeep expenses
    related to the yacht and the airplane and for Dr. Conrad’s flying
    lessons. 14 The Conrads did not claim any deductions on their 2008
    Schedule E related to the renting of a portion of their condominium to
    FMC.
    B.      2009 returns
    1.      FMC’s 2009 tax return
    For tax year 2009 FMC filed Form 1120S claiming $290,340 of
    depreciation deductions for all its assets. The parties have stipulated
    that FMC claimed a $281,347 depreciation deduction for both the yacht
    and the airplane. The stipulation does not state how much of the
    $281,347 was for the yacht versus the airplane, nor can we determine
    from the record how much of the $281,347 deduction was for the yacht
    versus the airplane. As for 2008, however, we need not determine how
    much of this $281,347 relates to the yacht versus the airplane because
    we hold that for 2009 FMC is not entitled to deduct depreciation for
    either asset. See infra OPINION, Part II.A and II.C.
    FMC’s 2009 Form 1120S also deducted $400,091 on line 19, Other
    deductions. An attached statement gave an itemization of the “Other
    deductions.” One such line item was a $21,893 deduction for “marine
    expense.” Unlike the 2008 Form 1120S, it has no line item for “aviation
    expense.” Although the word “marine” might suggest the category
    “marine expense” would not include expenses for an airplane, paragraph
    24 of the Supplemental Stipulation states that the $21,893 deduction for
    “marine expense” relates to the expenses for both the yacht and the
    airplane. We need not determine how much of the $21,893 deduction
    was claimed to be related to the yacht versus the airplane because
    (1) the IRS does not dispute that the storage, maintenance, and upkeep
    14 For 2008 the Conrads’ proportional share of FMC’s depreciation deductions
    for its yacht and its airplane (as claimed) equals $491,662. For 2008 the Conrads’
    proportional share of FMC’s nondepreciation deductions for its yacht and its airplane
    (as claimed) equals $131,689.
    16
    [*16] expenses of $21,893 for the yacht and airplane were incurred and
    (2) we hold that the entire $21,893 for the storage, maintenance, and
    upkeep of FMC’s yacht and airplane is deductible. 15 See infra OPINION,
    Part II.B and II.D.
    On its 2009 Form 1120S FMC did not deduct any interest
    expense. However, the parties stipulated that in 2009 “$7,582 [of]
    interest [was] paid relating to the yacht.” This stipulation establishes
    two facts: first, that interest of $7,582 was actually paid, and second,
    that the interest was related to the yacht. The stipulation alone does not
    reveal who paid the interest and who was the borrower in the
    corresponding loan transaction (if different). Mrs. Conrad reported this
    interest expense on her 2009 Schedule C.
    However, in its opening brief the IRS’s proposed finding of fact
    paragraph 8 states that Dr. Conrad purchased the yacht “in his capacity
    as President of [FMC],” which, if true, means that FMC was the owner
    of the yacht. Dr. Conrad did not respond to this proposed fact in his brief,
    and we conclude that he thus admitted it is true. See Rule 151(e)(3). The
    IRS’s proposed findings of fact paragraphs 13 and 14 state, respectively,
    that (1) the yacht was used only in 2003 and (2) the yacht was never
    used by FMC or the Conrads thereafter. Dr. Conrad did not respond to
    paragraph 13 and expressly stated that paragraph 14 is correct.
    Therefore, we conclude that Dr. Conrad agrees that neither he nor his
    wife used the yacht during 2009. See Rule 151(e)(3). Finally, the IRS’s
    proposed finding of fact paragraph 52 states that the yacht interest is
    unrelated to Mrs. Conrad’s accounting sole proprietorship. Dr. Conrad
    admitted in his brief that this is correct. We therefore conclude that Mrs.
    Conrad did not use the yacht in her accounting business during 2009.
    As we discuss more fully infra OPINION, Part IV, FMC was the
    borrower on the loan related to its yacht. We need not determine who
    paid the interest during 2009 because, for reasons discussed infra
    OPINION, Part IV, the identity of the payor does not affect our holdings
    in this case.
    15 Neither the stipulations nor the record explains why the storage,
    maintenance, and upkeep expenses for the yacht and the airplane were $235,041 less
    in 2009 than in 2008. This could relate, at least in part, to Dr. Conrad’s inability to fly
    the airplane for 15 months during the second half of 2008 and 2009 (while he recovered
    from his heart attacks). In any event, we hold that the amounts paid or incurred by
    FMC for these expenses are not at issue because the IRS has waived any argument
    relating to the proper amounts of these expenses or whether they were paid or incurred
    by FMC in the relevant years.
    17
    [*17] FMC also deducted $104,333 on line 11 of its 2009 Form 1120S as
    “Rents.” This deduction is for its payment of $104,333 for rent to the
    Conrads for its use of portions of the Conrads’ condominium and the
    house during 2009.
    Overall, FMC claimed an “ordinary business loss” deduction of
    $544,327 for 2009 on line 21 of its Form 1120S. This amount included
    the $281,347 of depreciation deductions for both the yacht and the
    airplane and the $21,893 deduction for the storage, maintenance, and
    upkeep of the yacht and the airplane.
    2.    The Conrads’ 2009 tax return
    For 2009 the Conrads filed a joint return. They did not report any
    wages or salaries on their Form 1040 or deduct unreimbursed employee
    business expenses on their Schedule A for Dr. Conrad’s role as president
    of FMC or for Mrs. Conrad’s accounting services to FMC. The Conrads
    reported income of $288,000 on Dr. Conrad’s 2009 Schedule C ostensibly
    for his services as president of FMC and $81,267 on Mrs. Conrad’s 2009
    Schedule C for her accounting services to FMC as an independent
    contractor. Therefore, the Conrads reported on their return a combined
    total of $369,267 of income for their professional services to FMC. The
    Conrads did not report any rental income on their 2009 Schedule E even
    though FMC reported a $104,333 deduction for rent paid to the Conrads
    on its 2009 Form 1120S. In his posttrial brief, Dr. Conrad argues that,
    contrary to their return, the $369,267 consists of $104,333 of rents from
    FMC and $264,934 of compensation for professional services. Dr.
    Conrad’s brief does not assert how much of the $264,934 is attributable
    to his management services versus Mrs. Conrad’s accounting services.
    Whether the Conrads reported the $104,333 of rental income paid by
    FMC on their Form 1040 is a disputed issue in this case, which we
    discuss more fully infra OPINION, Part III.B.1. We hold that the
    Conrads did report the $104,333 of rental income but that they did so on
    Dr. Conrad’s Schedule C as part of the $288,000 ostensibly reported as
    compensation for services.
    On their 2009 Schedule A the Conrads deducted $81,889 for home
    mortgage interest and $21,038 for real estate taxes.
    On Dr. Conrad’s 2009 Schedule C the Conrads deducted $288,000
    for the “business use of home.” The Form 8829 attached to Dr. Conrad’s
    Schedule C divides the $288,000 deduction into the following categories:
    (1) $40,944 of mortgage interest; (2) $21,038 of real estate taxes;
    18
    [*18] (3) $1,763 of insurance expenses; (4) $3,755 of utilities expenses;
    (5) $30,906 of other expenses; (6) $56,319 of an operating-expense
    carryforward from 2008; and (7) $133,275 of depreciation and excess
    casualty loss expenses (consisting of $72,724 of depreciation for 2009
    and $60,551 of depreciation and excess casualty loss expenses carried
    forward from 2008). Items (1), (2), (3), (4), and (5) were expressly
    computed on the Schedule C by using 50% to determine the portions of
    the expenses allocable to nonpersonal use. Adding the mortgage interest
    deductions claimed on both their Schedule A and Dr. Conrad’s Schedule
    C, the Conrads claimed a total mortgage interest deduction of $122,833
    for 2009 despite having paid only $81,889.
    On Mrs. Conrad’s 2009 Schedule C the Conrads claimed
    deductions for the following: (1) $7,582 of interest expenses related to
    FMC’s yacht, (2) $48,542 of condominium fees for the condominium, and
    (3) $43,200 of rent for the house.
    The $48,542 of condominium fees for the condominium was
    reported on Mrs. Conrad’s Schedule C on the line for “[o]ffice expense.”
    The parties have stipulated that the actual amount the Conrads paid for
    condominium fees was only $24,271.
    The $43,200 of rent for the house was reported on Mrs. Conrad’s
    Schedule C on the line for “[r]ent or lease” of “[v]ehicles, machinery, and
    equipment.”
    On their 2009 Schedule E the Conrads claimed a $278,989
    deduction for their 51.25% share of FMC’s ordinary business loss of
    $544,327. This $278,989 includes the Conrads’ proportional shares of
    FMC’s reported depreciation deductions for the yacht and the airplane
    and of FMC’s reported deductions for storage, maintenance, and upkeep
    expenses related to FMC’s yacht and airplane. 16 As for 2008, the
    Conrads did not deduct any expenses on their 2009 Schedule E related
    to the renting of portions of their residences to FMC.
    16 For 2009 the Conrads’ proportional share of FMC’s depreciation deductions
    for its yacht and its airplane (as claimed) equals $144,202. For 2009 the Conrads’
    proportional share of FMC’s nondepreciation deductions for its yacht and its airplane
    (as claimed) equals $11,221.
    19
    [*19] III.   Notice of deficiency and determination of accuracy-related
    penalties under section 6662(a)
    A.    Audit and penalty approval form
    In 2011 the Conrads’ 2008 and 2009 returns were audited by
    Revenue Agent Milton Finney. On April 12, 2011, Finney prepared a
    Civil Penalty Approval Form that covered both years at issue. The first
    page of the form had the standard preprinted heading “Reason(s) for
    Assertion of Penalty(s) IRM 4.10.6.7(1).” Underneath was a blank box in
    which Finney wrote two reasons for asserting a penalty. First, he wrote
    that “[t]axpayers failed to exercise ordinary and necessary care in the
    preparation of the return.” Second, he wrote that “[t]he understatement
    of the tax is greater than $5,000.00.” These reasons did not include
    citations of Code provisions.
    On the second page of the Civil Penalty Approval Form is a table
    titled “Penalties Requiring Group Manager Approval.” This table has
    several preprinted columns, of which those labeled “IRC,” “Penalty,” and
    “Assert Penalty” are relevant for this case. The “Assert Penalty” column
    asks the examining agent to mark either the “Yes” or the “No” box for
    various components of the accuracy-related penalties, which are
    identified by preprinted descriptions of each component in the “Penalty”
    column and by preprinted Code provisions in the “IRC” column. Finney
    marked the “Yes” box in the “Assert Penalty” column only for the
    component identified as “Substantial Understatement” in the “Penalty”
    column and “6662(d)” in the “IRC” column. Finney marked the “No” box
    in the “Assert Penalty” column for all other components, including the
    one identified as “Negligence” in the “Penalty” column and “6662(c)” in
    the “IRC” column.
    On July 18, 2011, Janelle Marlow, Finney’s supervisor, signed
    this Civil Penalty Approval Form. For reasons discussed infra
    OPINION, Part V.B, we conclude that Finney determined that the
    Conrads were liable for only the section 6662(a) penalty as to a
    substantial understatement of income tax, but not as to negligence. We
    also conclude that Marlow approved only the section 6662(a) penalty as
    to a substantial understatement of income tax, but not as to negligence.
    Marlow credibly testified that she sent the Conrads an “initial
    report” with the Civil Penalty Approval Form attached. This initial
    report is not in the record, and the record does not allow us to determine
    the date that the initial report was sent to the Conrads. Because the
    20
    [*20] initial report was attached to the Civil Penalty Approval Form,
    and because that form bears the date July 18, 2011 (i.e., the date of
    Marlow’s signature on the form), we conclude that the initial report was
    sent to the Conrads on or after July 18, 2011.
    On January 8, 2013, the IRS issued a notice of deficiency to the
    Conrads. It was signed by Alan Redstone, who is referred to in the notice
    of deficiency as an “Appeals Team Manager.” The notice of deficiency
    named Marion S. Tate as the “Person to Contact.” It did not provide any
    additional information on Redstone and Tate. We now describe the
    adjustments to income made in the notice of deficiency and the accuracy-
    related penalties determined by the notice of deficiency.
    B.     Notice of deficiency
    1.    2008
    For 2008 the notice of deficiency made two adjustments to FMC’s
    income. First, it disallowed the $959,265 deduction claimed on FMC’s
    Form 1120S for the combined depreciation of both FMC’s yacht and its
    airplane. The disallowance of the depreciation deductions was explained
    as follows:
    [I]t has been determined your present Accounting
    Method (of deducting Depreciation) does not clearly reflect
    expenses in accordance with IRC [section] 446 . . . . A
    change of Accounting Method is imposed pursuant to IRC
    [section] 446 . . . . In the “New Accounting Method” you will
    not be allowed to deduct Depreciation. Therefore
    Depreciation is increased $959,265.00 for your 200812 . . . .
    Second, the notice of deficiency disallowed the $256,934 deduction
    claimed on FMC’s Form 1120S for the total storage, maintenance, and
    upkeep expenses of both FMC’s yacht and its airplane, as well as the
    expenses of Dr. Conrad’s flying lessons. The disallowance of the
    nondepreciation deductions was explained as follows:
    [I]t has been determined your present Accounting
    Method (of deducting Other Deductions) does not clearly
    reflect expenses in accordance with IRC [section] 446 . . . .
    A change of Accounting Method is imposed pursuant to IRC
    [section] 446 . . . . In the “New Accounting Method” you will
    21
    [*21] not be allowed to deduct Other Deductions. Therefore
    Other Deductions is increased $256,934.00 for your 200812
    ....
    The total amount of deductions disallowed from FMC’s Form 1120S is
    $1,216,199. This is the sum of $959,265 and $256,934. The notice of
    deficiency reduced the Conrads’ $644,816 deduction claimed on their
    Schedule E for their 51.25% proportional share of FMC’s losses by
    $623,350, i.e., 51.25% of $1,216,199.
    Next, the notice of deficiency disallowed the entire $222,207
    deduction for the business use of the condominium claimed on Dr.
    Conrad’s Schedule C. The notice of deficiency explained that “you [Dr.
    Conrad] failed to establish that the office was used exclusively on a
    regular basis as your principal place of business.” Instead, the notice of
    deficiency determined that the Conrads were entitled to an $18,443
    deduction on their Schedule E. 17 The notice of deficiency did not disallow
    the Conrads’ $216,556 of mortgage interest claimed as an itemized
    deduction on their 2008 Schedule A. Neither did it adjust the $144,000
    of rental income from FMC that the Conrads claimed on their
    Schedule E.
    The notice of deficiency determined that the Conrads were liable
    for a section 6662(a) accuracy-related penalty of $26,850 because their
    underpayment for 2008 was due to (1) a substantial understatement of
    income tax, (2) a substantial valuation misstatement, or (3) negligence.
    As explained infra OPINION, p. 79, we conclude that the IRS has
    abandoned any argument that the Conrads are liable for a penalty due
    to a substantial valuation misstatement. Although the notice of
    deficiency bore the names of two employees of Appeals (i.e., Redstone
    and Tate), the employees likely assumed, like IRS counsel in this
    litigation, that the Civil Penalty Approval Form evinced Finney’s
    determination to assert a penalty for both a substantial understatement
    of income tax and negligence. For reasons discussed infra OPINION,
    Part V.B.1 and V.B.2, we conclude that Finney determined that the
    17 In its opening brief the IRS proposed in finding of fact 47 that the notice of
    deficiency allowed the Conrads a Schedule E deduction “because [the Conrads]
    reported rental income from [FMC] . . . for [FMC’s] use of their home for business.” The
    IRS did not explain in the notice of deficiency or further explain in its briefs how it
    calculated $18,443 as the correct allowable deductions in 2008 or which expenses it
    included in this calculation.
    22
    [*22] Conrads were liable for a penalty due only to a substantial
    understatement of income tax.
    2.    2009
    For 2009 the notice of deficiency made two adjustments to FMC’s
    income. First, it disallowed the $281,347 deduction claimed on FMC’s
    Form 1120S for the combined depreciation of both FMC’s yacht and its
    airplane. The disallowance of the depreciation deductions was explained
    as follows:
    [I]t has been determined your present Accounting
    Method (of deducting Depreciation) does not clearly reflect
    expenses in accordance with IRC [section] 446 . . . . A
    change of Accounting Method is imposed pursuant to IRC
    [section] 446 . . . . In the “New Accounting Method” you will
    not be allowed to deduct Depreciation. Therefore
    Depreciation is increased . . . $281,347.00 for your 200912.
    Second, the notice of deficiency disallowed the $21,893 deduction
    claimed on FMC’s Form 1120S for the combined storage, maintenance,
    and upkeep expenses of both FMC’s yacht and its airplane. The
    disallowance of the nondepreciation deductions was explained as
    follows:
    [I]t has been determined your present Accounting
    Method (of deducting Other Deductions) does not clearly
    reflect expenses in accordance with IRC [section] 446 . . . .
    A change of Accounting Method is imposed pursuant to IRC
    [section] 446 . . . . In the “New Accounting Method” you will
    not be allowed to deduct Other Deductions. Therefore
    Other Deductions is increased . . . $21,893.00 for your
    200912.
    The total amount of deductions disallowed on FMC’s Form 1120S is
    $303,240. This is the sum of $281,347 and $21,893. The notice of
    deficiency reduced the Conrads’ $278,989 deduction claimed on their
    Schedule E for their 51.25% proportional share of FMC’s losses by
    $155,422, i.e., 51.25% of $303,240.
    Next, the notice of deficiency made four adjustments to the
    Conrads’ income that were unrelated to the passthrough of FMC’s
    income and deductions. First, the notice of deficiency disallowed the
    entire $288,000 deduction claimed on Dr. Conrad’s Schedule C. Instead,
    23
    [*23] it determined that the Conrads were entitled to a $3,885 business-
    use-of-home deduction on Mrs. Conrad’s Schedule C. 18 Second, it
    disallowed the $43,200 deduction for rental payments for the house
    claimed on Mrs. Conrad’s Schedule C. Third, it disallowed the $48,542
    deduction for condominium fees claimed on Mrs. Conrad’s Schedule C.
    Fourth, it disallowed the $7,582 deduction for interest expenses related
    to FMC’s yacht claimed on Mrs. Conrad’s Schedule C.
    The notice of deficiency determined that the Conrads were liable
    for an accuracy-related penalty of $14,626 under section 6662(a) because
    the Conrads’ underpayment for 2009 was due to (1) a substantial
    understatement of income tax, (2) a substantial valuation misstatement,
    or (3) negligence. As explained infra OPINION, p. 79, we conclude that
    the IRS has abandoned any argument that the Conrads are liable for a
    penalty due to a substantial valuation misstatement. The notice of
    deficiency bore the names of two employees of Appeals (i.e., Redstone
    and Tate). However, the employees likely assumed, like IRS counsel in
    this litigation, that the Civil Penalty Approval Form evinced Finney’s
    determination to assert a penalty for both a substantial understatement
    of income tax and negligence. For reasons discussed infra OPINION,
    Part V.B.1 and V.B.2, we conclude that Finney determined that the
    Conrads were liable for a penalty due only to a substantial
    understatement of income tax.
    The Conrads timely filed their Petition with this Court on April
    5, 2013, seeking redetermination of the deficiencies and penalties
    determined in the January 8, 2013, notice of deficiency. The parties have
    stipulated that the Conrads were residents of Panama when they filed
    their Petition. The IRS filed an Answer. The Answer did not further
    clarify the reasons for the disallowances of deductions FMC claimed on
    its 2008 and 2009 Forms 1120S or the disallowances of deductions the
    Conrads claimed on their 2008 and 2009 Forms 1040. The Answer did
    not state that IRS counsel had made an independent determination to
    assert the negligence component of the accuracy-related penalty.
    18 As with its adjustment for deductions for 2008, the notice of deficiency failed
    to explain how it calculated $3,885 as the correct allowable deduction on Mrs. Conrad’s
    Schedule C or which expenses were included in this calculation. And the IRS did not
    attempt to give such an explanation in its briefs.
    24
    [*24] IV.     Trial proceedings
    The Court set a trial date of May 2, 2016. The order setting this
    case for trial required the parties to file pretrial memoranda, which,
    among other things, were to identify what issues were extant in the case.
    The IRS’s Pretrial Memorandum, which was filed on April 18,
    2016, stated that the only issue in the case was the deductibility of the
    expenses related to the condominium and the house: “Petitioners and
    respondent’s counsel have resolved all issues except for the disallowance
    of petitioners’ Business Use of Home deduction for both years at issue.”
    When the Court was convened on the day of trial, Dr. Conrad and IRS
    counsel lodged the Stipulation of Facts, the subject matter of which was
    limited to the condominium and house expenses. Dr. Conrad and IRS
    counsel advised the Court that they had thought they would be able to
    settle all other issues in the case before trial. However, they explained
    that they realized shortly before the start of trial they could not agree
    on the terms of the settlement. 19
    After this discussion of the failure of the parties’ settlement
    negotiations, Dr. Conrad asked the Court if “we’re just going to stop
    today?” The Court explained that the day had been appointed for trial
    and that the trial should proceed.
    Dr. Conrad began testifying on direct about the issue of the
    expenses of the condominium and the house. After Dr. Conrad had
    finished testifying with respect to that issue and began testifying about
    the issues related to the yacht and the airplane, it became apparent that
    Dr. Conrad was unprepared for trial on these latter issues. The Court
    began to inquire of IRS counsel what the IRS’s positions were on the
    issues related to the yacht and the airplane. IRS counsel explained that
    the yacht and airplane expenses had both been “disallowed in the notice
    of deficiency.” The Court asked IRS counsel whether the Conrads had
    the burden of proof with respect to the expenses. IRS counsel said, “Yes.”
    The Court asked whether that meant Dr. Conrad had to prove “in this
    trial his entitlement to the plane and yacht expenses”? IRS counsel
    responded: “Yes. And the business purpose for both a plane and yacht in
    the corporation [FMC].” The Court asked whether “one aspect of the
    deduction is that he [Dr. Conrad] has to prove that the corporation
    incurred the expense?” IRS counsel stated: “Yes. Incurred the expenses,
    19 Dr. Conrad and IRS counsel explained that no written settlement had ever
    been executed.
    25
    [*25] and then the other aspect is whether or not there was a real
    business purpose for having an airplane and a yacht.”
    When the Court turned to Dr. Conrad, it asked: “So Dr. Conrad,
    you understand that Ms. Bacon [IRS counsel] says you need to address
    these other issues, too, in order to prevail”? Dr. Conrad responded: “Yes,
    sir. But I apologize for not being prepared, because I thought we had
    that all taken care of.” The Court then asked Dr. Conrad: “If you were
    to litigate these issues . . . would you need documents that you don’t
    have here today?” Dr. Conrad responded: “I’ve got four large boxes that
    I can’t even carry, lift, that have all these records in them . . . .” Dr.
    Conrad then asked for a continuance of the trial, so as to allow him
    additional time to, among other things, present the documents to IRS
    counsel for the purpose of engaging in further settlement negotiations.
    The Court, over the objection of the IRS, granted the continuance. The
    Court did not order additional pretrial memoranda from the parties in
    advance of the continued trial. Thus, when the continuation of trial
    came, the IRS had not filed a new pretrial memorandum in the case
    addressing the yacht and airplane issues.
    At the start of the continued trial, the parties lodged the
    Supplemental Stipulation regarding both the depreciation and
    nondepreciation deductions related to FMC’s airplane and yacht.
    Paragraph 17 of the Supplemental Stipulation stated that for 2008 FMC
    had deducted $959,265 of depreciation related to the yacht and the
    airplane. Paragraph 18 of the Supplemental Stipulation stated that for
    2008 FMC had deducted $256,934 of nondepreciation expenses related
    to the yacht and the airplane. Paragraph 23 of the Supplemental
    Stipulation stated that for 2009 FMC had deducted $281,347 of
    depreciation related to the yacht and the airplane. Paragraph 24 of the
    Supplemental Stipulation stated that for 2009 FMC had deducted
    $21,893 of nondepreciation expenses related to the yacht and the
    airplane.
    When the trial resumed, the parties did not make opening
    statements. Dr. Conrad testified on direct about the airplane, yacht, and
    residence expenses; he was then subject to examination by IRS counsel.
    During the testimony, the Court periodically asked IRS counsel about
    its position regarding the airplane and yacht deductions. As to the
    nondepreciation expenses related to the airplane, IRS counsel explained
    that the deductions were challenged because the airplane “was never
    used for business.” The Court then asked: “Would you be contesting that
    the expenses were incurred?” IRS counsel responded:
    26
    [*26]          No. No, the expenses were incurred. The Appeals
    officers looked through the documents and disallowed it
    just on the legal basis of the ordinary and necessary
    business assets, no depreciation, no ordinary and
    necessary but they were incurred.
    The record is unclear as to whether IRS counsel’s reference to “Appeals”
    meant IRS review (1) before the January 8, 2013, notice of deficiency or
    (2) between May 2, 2016, and the continued trial on September 13, 2016.
    The Court also inquired as to the IRS’s challenge to the
    deductibility of expenses related to the yacht. After discussing
    depreciation, IRS counsel addressed the nondepreciation expenses:
    The disallowance of the expenses [is] that they’re
    not—owning a yacht to visit 25 customers for 30 days is not
    an ordinary and necessary business expenses [sic], nor is
    the upkeep of that yacht for years to come in the
    Government’s opinion.
    IRS counsel also explained that the nondepreciation expenses were not
    deductible because of the section 274(a)(1)(B) limitations on deducting
    the expenses of an entertainment facility.
    At the conclusion of the continued trial, the Court ordered the
    parties to file briefs. We extensively discuss the IRS’s brief regarding
    the nondepreciation deductions related to the yacht infra OPINION,
    Part II.B. Our conclusions about these portions of the IRS’s brief are
    that the brief (1) contends that the yacht is an entertainment facility,
    (2) relies on the factual allegation that the yacht was used for personal
    and entertainment purposes during the 2003 trip, (3) relies on the
    uncontested fact that during the years at issue, the yacht was in storage,
    and (4) does not directly argue that FMC failed to pay or incur the
    nondepreciation expenses claimed as deductions for the yacht. As
    discussed infra OPINION, Part II.B, we hold that the IRS has waived
    any argument that the nondepreciation expenses for the yacht were not
    paid or incurred by FMC.
    OPINION
    Before we discuss the merits of this case, one procedural matter
    requires our attention. At trial, Mrs. Conrad did not appear, nor was
    there any appearance on her behalf. Dr. Conrad did make an
    appearance. The IRS made an oral motion to dismiss the case for lack of
    27
    [*27] prosecution as to Mrs. Conrad, and this motion was taken under
    advisement to be acted upon at the time the merits of the case were
    decided. As Dr. Conrad had no authority to represent his wife, and there
    was no other appearance by her or on her behalf, the motion to dismiss
    will be granted, and a decision will be entered against Mrs. Conrad for
    deficiencies and penalties in the same amounts as those ultimately
    determined against Dr. Conrad.
    I.     It is unnecessary to determine who has the burden of proof
    regarding deficiencies.
    The taxpayer generally bears the burden of proof (and therefore
    must prove the relevant facts by the preponderance of the evidence),
    except when the conditions of section 7491(a) are satisfied. See Rule
    142(a); Welch v. Helvering, 
    290 U.S. 111
    , 115 (1933); Bronstein v.
    Commissioner, 
    138 T.C. 382
    , 384 (2012). Some of our findings of fact
    relate to the deficiency amounts, while others relate to penalty
    liabilities. Our findings of fact regarding the deficiency amounts are
    based on the preponderance of the evidence. Thus, it is unnecessary to
    determine which party (i.e., the Conrads or the IRS) has the burden of
    proof as to the deficiency amounts. See Estate of Bongard v.
    Commissioner, 
    124 T.C. 95
    , 111 (2005).
    We discuss the burden of proof regarding the Conrads’ liabilities
    for the penalties separately. See infra OPINION, Part V.A.
    II.    FMC cannot deduct depreciation for its yacht and its airplane but
    can deduct expenses for storage, maintenance, and upkeep of both
    and for the costs of Dr. Conrad’s flying lessons.
    On its 2008 Form 1120S, FMC claimed $959,265 of depreciation
    deductions for both its yacht and its airplane and $256,934 of deductions
    for storage, maintenance, and upkeep expenses for both its yacht and its
    airplane. 20 The $256,934 of nondepreciation deductions also includes
    expenses paid for Dr. Conrad’s flying lessons. The notice of deficiency
    disallowed all these deductions, resulting in a total disallowance of
    $1,216,199. We disallow the depreciation deductions claimed for 2008
    20 As the Conrads were 51.25% owners of FMC, their share of these claimed
    deductions was $623,350, which was incorporated into the $644,816 total deduction
    claimed on their Schedule E for their share of FMC’s reported net loss. An
    S corporation such as FMC is not subject to federal income tax, see § 1363(a), but its
    taxable income is computed, see § 1363(b)(1), and its income and deductions are passed
    through to its shareholders pro rata, see § 1366(a)(1).
    28
    [*28] for both the yacht and the airplane. See infra OPINION, Part II.A
    and II.C. We allow the deductions claimed for 2008 for the storage,
    maintenance, and upkeep expenses for the yacht and the airplane (and
    flying-lesson expenses). See infra OPINION, Part II.B and II.D.
    On its 2009 Form 1120S, FMC claimed $281,347 of depreciation
    deductions for both its yacht and its airplane and $21,893 of deductions
    for storage, maintenance, and upkeep expenses for both its yacht and its
    airplane. 21 The notice of deficiency disallowed all these deductions,
    resulting in a total disallowance of $303,240. We disallow the
    depreciation deductions claimed for 2009 for the yacht and the airplane.
    See infra OPINION, Part II.A and II.C. We allow the deductions claimed
    for 2009 for the storage, maintenance, and upkeep expenses for both the
    yacht and the airplane. See infra OPINION, Part II.B and II.D.
    A.     We sustain the disallowance of depreciation deductions
    FMC claimed for its yacht.
    Although FMC claimed depreciation deductions related to its
    yacht, Dr. Conrad stated in his answering brief that “[t]he depreciation
    [for the yacht] is not important to me and can be denied or withdrawn.”
    We consider this a waiver of the claim to the depreciation deductions.
    See Rule 151(e)(5); Amazon.com, Inc. & Subs. v. Commissioner, 
    148 T.C. 108
    , 220 (2017) (concluding that an argument not made by a party in its
    brief is waived), aff’d, 
    934 F.3d 976
     (9th Cir. 2019). We therefore sustain
    the determination in the notice of deficiency that FMC is not entitled to
    depreciation deductions claimed with respect to its yacht for 2008 and
    2009.
    B.     The expenses for the storage, maintenance, and upkeep of
    FMC’s yacht are deductible.
    We next address the deductions for storage, maintenance, and
    upkeep expenses FMC claimed related to its yacht. Section 162(a)
    generally allows a deduction for ordinary and necessary expenses paid
    or incurred in carrying on a trade or business.
    Section 212(2) also allows a deduction to individuals for “ordinary
    and necessary expenses paid or incurred . . . for the management,
    conservation, or maintenance of property held for the production of
    21 As the Conrads were 51.25% owners of FMC, their share of these claimed
    deductions was $155,422, which was incorporated into the $278,989 total deduction
    claimed on their Schedule E for their share of FMC’s reported net loss.
    29
    [*29] income.” This provision was enacted after Higgins v.
    Commissioner, 
    312 U.S. 212
    , 218 (1941), held that under the predecessor
    of section 162 (section 23(a) of the Revenue Act of 1932, ch. 49, 
    47 Stat. 169
    , 179), an individual without a business could not deduct the
    expenses of managing, conserving, and maintaining property held for
    the production of income. The predecessor to section 212(2) (i.e., section
    23(a)(2) of the Internal Revenue Code of 1939, as amended by the
    Revenue Act of 1942, ch. 619, § 121(a), 
    56 Stat. 798
    , 819) was enacted to
    allow such an individual to deduct such expenses. United States v.
    Gilmore, 
    372 U.S. 39
    , 45 (1963); see also Brown v. United States, 
    526 F.2d 135
    , 138 (6th Cir. 1975) (“The purpose of the provisions now
    contained in Section 212 was to create a parity of treatment between
    such nonbusiness expenses and similar business expenses which had
    long been deductible.”). Because section 212(2) provides a deduction only
    for individuals, it cannot serve as authority for a corporation to deduct
    the expenses of managing, conserving, and maintaining property held
    for the production of income. However, a corporation is not precluded
    from deducting such expenses under the authority of other Code
    provisions. Indeed, Bittker and Eustice’s treatise on corporate tax
    explains that a corporation can deduct, under section 162(a), the
    expenses of managing, conserving, and maintaining property held for
    the production of income:
    Section 212 is restricted to individuals, however,
    presumably on the theory that § 162(a) covers the same
    ground for corporations that §§ 162(a) and 212 in
    combination cover for other taxpayers.25 Thus, if a
    corporation engaged in manufacturing holds some
    securities as an incidental investment, the cost of a safe-
    deposit box, investment advice, bookkeeping, and so forth
    incurred with respect to the securities would be deductible
    under § 162(a) as a trade or business expense, even though
    an individual proprietor holding such securities would
    have to resort to § 212 as authority for deducting such
    expenses.
    25During   the 1942 hearings on § 212, a taxpayer representative
    recommended enlargement of § 212 to include corporations. See
    Hearings on Revenue Act of 1942 Before the Senate Finance Comm.,
    77th Cong., 2d Sess. 1733 (1942). The recommendation was not
    adopted, probably because it was thought to be unnecessary. At any
    rate, it has been generally assumed since 1942 that a corporation can
    deduct under § 162(a) any expenses that could be deducted under § 212
    by an individual proprietor or partnership. See generally Bittker &
    30
    [*30] Lokken, Federal Taxation of Income, Estate and Gifts ¶ 20.5.1
    (Warren, Gorham & Lamont, 3d ed. 1999) . . . .
    Boris I. Bittker & James S. Eustice, Federal Income Taxation of
    Corporations and Shareholders ¶ 5.03, at *2 (2020), Westlaw FTXCORP.
    A corporation’s deduction of the expenses of managing,
    conserving, and maintaining an asset is not unlimited. A corporation
    may deduct these expenses under section 162(a) if the acquisition and
    ownership of the asset is primarily associated with profit-motivated
    purposes and if the personal use of the property by shareholders,
    officers, or other individuals in control of corporate affairs is distinctly
    secondary and incidental. 22 Int’l Artists, Ltd. v. Commissioner, 
    55 T.C. 94
    , 104 (1970). But “if the acquisition and maintenance is primarily
    motivated by personal considerations, the deductions must be
    disallowed.” 23 
    Id.
     And if “substantial business and personal motives
    22 An example of a yacht’s expenses’ being deductible under section 162(a) is
    Tr. Prop. No. 4 v. Commissioner, 
    21 B.T.A. 627
     (1930). A corporation bought a yacht
    for $6,000 in 1915. 
    Id. at 628
    . The yacht was used to take out the corporation’s
    customers. 
    Id.
     The president of the corporation owned his own boat that he used for
    his personal purposes. 
    Id.
     During 1923, the corporate yacht was temporarily inactive
    because it was being repaired in dry dock. 
    Id.
     The Board of Tax Appeals held that the
    cost of the repairs was deductible because the yacht had been acquired and used to
    entertain the company’s customers and because it had not been used by the
    corporation’s president strictly for personal purposes. 
    Id.
     at 628–29.
    23 An example of a yacht’s expenses’ being disallowed as a deduction under
    section 162(a) is Savarona Ship Corp. v. Commissioner, 
    1 T.C.M. (CCH) 89
     (1942).
    Philadelphia socialite Emily R. Cadwalader was the president and major shareholder
    of a corporation that commissioned the construction of a yacht for $2.1 million. 
    Id.
    at 89–90. In July 1931 the yacht was completed. Id. at 90. During the month of October
    1931 Cadwalader chartered the yacht herself. Id. For two weeks in January 1932 she
    again chartered the yacht herself. Id. at 91. From January to March 1932 a friend of
    hers charted the yacht. Id. at 90–91. For part of April 1932 Cadwalader chartered the
    yacht herself. Id. at 91. In 1933 a German production company chartered the yacht for
    a short time to make a film. Id.
    For 1937, the year at issue, the yacht was unused, but the corporation still
    incurred costs to maintain it. Id. The Board of Tax Appeals held that the maintenance
    expenses were nondeductible. Id. The Board found that the yacht had been bought
    primarily for the use of Cadwalader. Id. at 92. The Board reasoned that the mere fact
    that the yacht was unused during the year at issue did not “show an abandonment of
    the yacht for pleasure purposes.” Id.
    31
    [*31] exist,” then “allocation becomes necessary.” 24 Id. at 105 (emphasis
    added).
    FMC is an S corporation. In general, S corporations are not
    subject to income tax. § 1363(a). Instead, an S corporation’s income is
    passed through to its shareholders. § 1366(a)(1). This is done in two
    ways. First, a shareholder must include in income the shareholder’s pro
    rata share of the S corporation’s “separately stated items of income or
    loss,” defined by section 1366(a)(1)(A) as “items of income [or] loss . . .
    the separate treatment of which could affect the liability for tax of any
    shareholder.” See also 
    Treas. Reg. § 1.1366-1
    (a)(2). Second, the
    shareholder must include in income the shareholder’s pro rata share of
    the S corporation’s “nonseparately stated income or loss,” defined by
    section 1366(a)(2) as “gross income minus the deductions . . . determined
    by excluding all items described in [section 1366(a)(1)(A)].” See also
    
    Treas. Reg. § 1.1366-1
    (a)(3).
    Deductions under section 162(a) (i.e., business expenses) are
    included in the computation of an S corporation’s nonseparately stated
    income (or loss). See 
    Treas. Reg. § 1.1366-1
    (a)(2) (section 162(a) is not
    enumerated in the list of separately stated items); see also Dunn v.
    Commissioner, 
    T.C. Memo. 2010-198
    , 
    2010 Tax Ct. Memo LEXIS 234
    , at
    *25 n.11 (stating that deductions under section 162(a) are aggregated
    with the S corporation’s other items of income, deductions, losses, and
    credits). Deductions under section 167(a) (i.e., depreciation deductions)
    are also included in the computation of an S corporation’s nonseparately
    stated income (or loss). See 
    Treas. Reg. § 1.1366-1
    (a)(2) (section 167(a)
    is not enumerated in the list of separately stated items); see also Broz v.
    Commissioner, 
    137 T.C. 25
    , 30 (2011) (depreciation deduction factored
    24 An example of a yacht’s expenses’ being allocated between deductible section
    162(a) business expenses and nondeductible personal expenses is Hal E. Roach Studios
    v. Commissioner, 
    20 B.T.A. 917
     (1930). In that case a corporation that produced films
    bought a yacht in 1922 to be used in the production of films at sea. 
    Id. at 918
    . Shortly
    after the purchase, the corporation stopped producing sea films. 
    Id.
     As a result the
    yacht was used very little for film production. 
    Id.
     For much of 1922 the yacht was
    attached to its moorings. 
    Id.
     Occasionally the yacht was used for personal purposes of
    Hal E. Roach, 
    Id.,
     whose name suggests that he was the owner of the corporation.
    The Board of Tax Appeals found that the corporation acquired the yacht “solely
    for business purposes,” that the yacht “was not used more than a dozen times for
    picture production,” and that “had the boat not been used at all for pleasure[,] much of
    the expense of maintenance would have been incurred nevertheless.” 
    Id. at 919
    . The
    Board held that one-half of the expense of maintaining the yacht in 1922 was an
    ordinary and necessary expense of the corporation. 
    Id.
     The other half of the expense
    was held to be nondeductible. Id.
    32
    [*32] into the computation of the S corporation’s income, which was
    passed through to the shareholder; the dispute was over the amount of
    depreciation).
    Deductions under section 212 are separately stated items of
    income or loss. See 
    Treas. Reg. § 1.1366-1
    (a)(2)(vi) (“[S]eparately stated
    items of the S corporation include . . . the additional itemized deductions
    for individuals provided in part VII of subchapter B (section 212 and
    following) of the Internal Revenue Code.”); see also Dunn, 
    2010 Tax Ct. Memo LEXIS 234
    , at *25 n.11 (“[I]temized deductions under sec. 212 . . .
    must be separately stated rather than aggregated with the
    S corporation’s other items of income, deductions, losses, and credits.”);
    1 Richard D. Blau et al., S Corporations: Federal Taxation § 7.57 (2021)
    (stating that deductions under section 212 are among items that are
    required to be separately stated); James S. Eustice, Joel D. Kuntz &
    John A. Bogdanski, Federal Income Taxation of S Corporations
    ¶ 7.05[5][a] (Nov. 2021) (“[
    Treas. Reg. § 1.1366-1
    (a)(2)(vi) reveals],
    however, that items that would be deductible at the corporate level
    under Section 212 pass through to the shareholders, who may deduct
    them, even though the corporation technically does not get to do so.”).
    They are not deductible in computing the S corporation’s nonseparately
    stated income or loss. See § 1363(b)(2) (disallowing to an S corporation
    deductions referred to in section 703(a)(2)); § 703(a)(2)(E) (providing
    that among the deductions disallowed to a partnership are those in
    sections 211–223); see also 
    Treas. Reg. § 1.1366-1
    (a)(3) (defining the
    nonseparately stated income or loss of the S corporation as excluding
    “any item requiring separate computation under” Treasury Regulation
    § 1.1366-1(a)(2)); 
    Treas. Reg. § 1.1366-1
    (a)(2)(vi) (providing that
    separately stated items of an S corporation include the deductions in
    sections 212–223).
    Section 274 disallows deductions otherwise permitted under
    section 162(a), section 167(a), or section 212. There are two provisions of
    section 274 we will discuss here: section 274(a)(1)(B) and section 274(d).
    Section 274(a)(1)(B) disallows deductions for the expenses of a facility
    used in connection with entertainment. Section 274(d) imposes rules
    known as “strict substantiation” requirements that allow certain types
    of deductions only if the taxpayer supplies contemporaneous
    substantiation of certain informational elements supporting the
    deductions. See Falsetti v. Commissioner, 
    85 T.C. 332
    , 358 (1985). The
    types of deductions covered by the version of section 274(d) in effect
    during 2008 and 2009 included (1) deductions for traveling expenses,
    (2) deductions with respect to a facility used in connection with
    33
    [*33] entertainment, (3) deductions for gifts, and (4) deductions with
    respect to “listed property” (defined by section 280F(d)(4)(A)(ii) to
    include any property used as a means of transportation). 25 The
    requirement (in section 274(d)) that deductions with respect to a facility
    used in connection with entertainment be strictly substantiated is a
    moot requirement after 1978. This is because such deductions are
    disallowed by section 274(a)(1)(B) after the provision’s amendment in
    1978. 26 See Revenue Act of 1978, 
    Pub. L. No. 95-600, § 361
    , 
    92 Stat. 2763
    ,
    2847 (amending § 274(a)(1)(B)).
    FMC reported the nondepreciation deductions for its yacht under
    section 162(a). (The deductions were reported on Part III, line 1 of the
    2008 and 2009 Schedules K–1, Shareholder’s Share of Income,
    Deductions, Credits, etc., 27 sent to FMC’s shareholders, which reported
    the shareholders’ pro rata shares of FMC’s nonseparately stated income
    or loss. Recall that section 162(a) deductions, but not section 212
    deductions, are included in the computation of nonseparately stated
    income or loss. 
    Treas. Reg. § 1.1366-1
    (a)(2).) In litigation Dr. Conrad
    defends the deductions by making the following points: the 71-day yacht
    trip in 2003 was an activity by which the Conrads entertained and met
    with WOMF’s clients; for several years after the trip FMC tried and
    failed to sell the yacht; and because the yacht was not sold until after
    the years at issue, FMC had to incur expenses of storing, maintaining,
    and keeping up the yacht during the years at issue.
    The IRS contends that the nondepreciation expenses of the yacht
    are not deductible under section 162(a) because FMC did not intend to
    25 In 2017 Congress amended section 274(d). Under the current version, section
    274(d) no longer applies to deductions with respect to a facility used in connection with
    entertainment. See Tax Cuts and Jobs Act of 2017 (TCJA), 
    Pub. L. No. 115-97, § 3304
    (a), 
    131 Stat. 2054
    , 2124.
    26 When both section 274(a)(1)(B) and section 274(d) were enacted in 1962,
    section 274(a)(1)(B) did not completely disallow deductions for facilities used in
    connection with entertainment. See Revenue Act of 1962, 
    Pub. L. No. 87-834, § 4
    (a), 
    76 Stat. 960
    , 974–76. However, section 274(a)(1)(B) was amended in 1978 to disallow
    these deductions.
    27 For each taxable year, an S corporation sends Schedule K–1 to each of its
    shareholders. The Schedule K–1 reports (1) the shareholder’s pro rata share of the
    S corporation’s nonseparately stated income or loss and (2) the shareholder’s pro rata
    share of the S corporation’s separately stated items of income or loss.
    34
    [*34] use the yacht in its business after 2003. We reject the IRS’s
    contention for reasons we explain in the paragraph below. 28
    FMC bought the yacht in 2003 so that Dr. Conrad could solicit
    customers to promote FMC’s business, and he did so on a 71-day trip in
    2003. After the trip, FMC held the yacht for sale but was unable to sell
    it immediately. No further use was made of the yacht, either business
    or personal. FMC had to incur storage, maintenance, and upkeep
    expenses during the years at issue (2008 and 2009) because it could not
    sell the yacht. During the years at issue the yacht remained FMC’s
    business asset. It was not used by the Conrads for personal purposes.
    Therefore, FMC can deduct the storage, maintenance, and upkeep
    expenses for the yacht under section 162(a). See Int’l Artists, Ltd., 55
    T.C. at 104; Tr. Prop. No. 4, 
    21 B.T.A. at
    628–29.
    We suppose that alternatively, one might view FMC’s expenses of
    maintaining, storing, and keeping up its yacht as corresponding to the
    deduction provided by section 212(2) for the “ordinary and necessary
    expenses paid or incurred during the taxable year [here 2008 and 2009]
    . . . for the management, conservation, or maintenance of property held
    for the production of income.” § 212(2). As an itemized deduction,
    though, a section 212 deduction is generally less favorable for taxpayers
    than an above-the-line deduction such as a section 162(a) deduction. See
    Guill v. Commissioner, 
    112 T.C. 325
    , 328 (1999) (stating that a
    deduction under section 212 for legal costs unrelated to a trade or
    business, and therefore not deductible under section 162(a), is an
    itemized deduction). 29 Usually, it is up to the IRS to make arguments
    that the taxpayer should be subject to greater tax than the taxpayer
    reported. Here, the IRS has not argued that the yacht expenses must be
    deducted under section 212(2). We therefore need not consider such a
    theory. See Feigh v. Commissioner, 
    152 T.C. 267
    , 277 (2019) (“Our job is
    to consider the issues advanced by the parties, not to craft alternative
    arguments never raised.”).
    The IRS also argues that even if the expenses of the yacht would
    be deductible under section 162, the deductions are nonetheless
    disallowed under section 274 because the yacht is used in connection
    with entertainment. Specifically, the IRS argues that the yacht should
    28 The IRS also contends that the yacht is a facility used for entertainment, a
    contention we evaluate later.
    29 We discuss the differences between above-the-line deductions and itemized
    deductions in more detail infra OPINION, pp. 45–46.
    35
    [*35] be considered a facility used in connection with entertainment
    because the Conrads have failed to meet the strict substantiation
    requirements of section 274. To understand the IRS’s argument, 30 we
    must delve into the history of section 274(a)(1)(B).
    The current version of section 274(a)(1)(B)—applicable for the
    years at issue—disallows deductions for the expenses of a facility used
    in connection with entertainment, amusement, or recreation. A prior
    version of section 274(a)(1)(B)—applicable only for expenses incurred
    before January 1, 1979—disallowed deductions for the expenses of a
    facility used in connection with entertainment unless the facility was
    used primarily to further the taxpayer’s business and the expenses were
    directly related to the active conduct of the business. See § 274(a)(1)(B)
    (1964) (before amendment by the Revenue Act of 1978, § 361, 92 Stat. at
    2847). A regulation related to the prior version of section 274(d),
    Treasury Regulation § 1.274-5T(c)(6)(iii), imposed a strict
    substantiation requirement for a taxpayer seeking to prove that a
    facility was used primarily to further the taxpayer’s business. This strict
    substantiation requirement is applicable only for expenses incurred
    before January 1, 1979. The IRS argues that the Conrads failed to
    substantiate that the yacht was primarily used in FMC’s business.
    Although the IRS words the argument in a way that obviously tracks
    the regulation, the IRS does not directly cite the regulation.
    The IRS’s arguments regarding the primary use of the yacht are
    irrelevant under current law. It no longer matters whether a facility is
    used primarily in furtherance of a taxpayer’s trade or business or
    whether a taxpayer has strictly substantiated that a facility is so used.
    Under the current version of section 274 the relevant question is
    whether FMC’s yacht was used in connection with entertainment. See
    30 The IRS’s arguments against the deductibility of the nondepreciation yacht
    expenses are confused because the IRS cites pre-1979 law. The IRS’s argument that
    the yacht is a facility used in connection with entertainment is made in its opening
    brief in the paragraph spanning pages 29 and 30 and in the second full paragraph on
    page 33. The IRS’s reasoning that the yacht was not used primarily in furtherance of
    FMC’s trade or business is stated in two full paragraphs on page 30, in the paragraph
    spanning pages 30 and 31, and in the full paragraph on page 31. The IRS’s support for
    its reasoning (i.e., that the Conrads have failed to meet strict substantiation
    requirements regarding the fact that the yacht was primarily used to further FMC’s
    business) is given in the full paragraph on page 34 and in the paragraph spanning
    pages 34 and 35. The IRS’s argument that the yacht expenses are not encompassed by
    section 162(a), because FMC did not intend to use the yacht in its business after 2003,
    is made in the paragraph spanning pages 35 and 36 and in the first full paragraph on
    page 36.
    36
    [*36] § 274(a)(1)(B). Treasury Regulation § 1.274-2(e)(2) provides that
    property owned by a taxpayer is considered to constitute a facility used
    in connection with entertainment if it is “used during the taxable year
    for, or in connection with, entertainment.” See also Harrigan Lumber
    Co. v. Commissioner, 
    88 T.C. 1562
    , 1565 n.7 (1987) (stating that the
    provisions in Treasury Regulation § 1.274-2(e)(2), (3), and (4) govern
    expenditures paid or incurred after December 31, 1978), aff’d without
    published opinion, 
    851 F.2d 362
     (11th Cir. 1988). Treasury Regulation
    § 1.274-2(b)(1)(i) provides that the term “entertainment” means any
    activity that is generally considered to constitute entertainment,
    amusement, or recreation. Thus, FMC’s yacht is a facility used in
    connection with entertainment if it was used during 2008 and 2009 for,
    or in connection with, an activity generally considered to be
    entertainment, amusement, or recreation.
    During the 2003 trip the yacht was used in connection with
    entertainment. 31 But during 2008 and 2009 the yacht was docked and
    unused. Therefore, it was not “used during the taxable year [2008, 2009]
    for, or in connection with, entertainment.” 
    Treas. Reg. § 1.274-2
    (e)(2).
    For these years the yacht was not a facility used in connection with
    entertainment. See 
    id.
     Accordingly, section 274(a)(1)(B) does not
    disallow FMC’s deductions for the yacht’s storage, maintenance, and
    upkeep expenses.
    The IRS does not rely on the strict substantiation requirements
    of section 274(d) other than for the assertion (irrelevant, as we have
    explained) that the Conrads did not strictly substantiate that the yacht
    was used primarily for the furtherance of FMC’s business. For example,
    the IRS does not argue that the nondepreciation expenses of the yacht
    must be strictly substantiated under the rules for listed property. See
    § 274(d)(4). We therefore do not consider whether the yacht expense
    31 The regulations provide that whether an activity is generally considered to
    constitute entertainment, amusement, or recreation is determined by an “objective
    test.” 
    Treas. Reg. § 1.274-2
    (b)(1)(ii). However, the regulations also state that “in
    applying this test the taxpayer’s trade or business shall be considered.” 
    Id.
     In
    explaining how a taxpayer’s trade or business should be considered, the regulations
    give as an example a manufacturer of dresses that puts on a fashion show to introduce
    its products to a group of store buyers. 
    Id.
     The regulations state that the show would
    not generally constitute entertainment. 
    Id.
     However, the regulations state that a
    fashion show conducted by an appliance distributor for the “wives” of the distributor’s
    retailers would generally be considered entertainment. 
    Id.
     Under these examples,
    FMC’s yacht cruise in 2003 would be an entertainment activity even though a yacht
    operated by a cruise line would not be. FMC is not in the business of entertainment,
    but a cruise line is in the business of entertainment.
    37
    [*37] deductions meet the strict substantiation requirements of section
    274(d). See Feigh, 152 T.C. at 277.
    One common issue that arises in determining whether an expense
    is deductible under section 162(a) is whether it was paid or incurred
    during the year at issue. See Commissioner v. Lincoln Sav. & Loan
    Ass’n, 
    403 U.S. 345
    , 352 (1971) (stating that an item’s having been paid
    or incurred during the taxable year is one of five elements required for
    deducting an expense under section 162(a)). In this case, however, the
    IRS has not argued that FMC did not pay or incur the expenses of
    maintaining, keeping up, and storing the yacht during 2008 and 2009. 32
    We have addressed all arguments made by the IRS. Therefore, we
    do not sustain the IRS’s disallowance of deductions for the storage,
    maintenance, and upkeep expenses incurred by FMC for its yacht
    during the years at issue.
    32 The notice of deficiency disallowed the nondepreciation yacht deductions but
    gave only the obscure explanation that the disallowance was the result of the IRS’s
    changing FMC’s “accounting method.” A change in method of accounting involves the
    proper timing for a deduction. 
    Treas. Reg. § 1.446-1
    (e)(2)(ii)(b) (“[A] change in method
    of accounting does not include adjustment of any item of income or deduction that does
    not involve the proper time for inclusion of the item of income or the taking of a
    deduction.”). FMC reported that it used the accrual method of accounting to prepare
    its Forms 1120S. Under that method of accounting, the taxpayer claims deductions for
    the year the corresponding liability is incurred. 
    Treas. Reg. § 1.461-1
    (a)(2). By contrast,
    under the cash method of accounting, the taxpayer claims deductions for the year that
    the corresponding amount is paid. 
    Treas. Reg. § 1.461-1
    (a)(1). It is unclear from the
    notice of deficiency whether the IRS intended to change FMC’s method of accounting
    to the cash method of accounting (or to some other method of accounting). In any event,
    the IRS’s change to an accounting method is different from an argument that an item
    was never paid or incurred.
    The IRS’s Answer gave no further explanation as to why it disagreed with the
    nondepreciation yacht deductions. On May 5, 2016, the IRS stated in court that it was
    challenging that the yacht expenses were “incurred.” On that same day, the Court
    continued the case and told the Conrads to give FMC’s records regarding the
    nondepreciation yacht deductions and other issues to the IRS. At the continued trial
    date and after the Conrads were supposed to have given the IRS records related to the
    yacht, the IRS explained again the nature of its arguments regarding the yacht
    deductions. The IRS argued that the yacht was a facility used in connection with
    entertainment, but it did not identify a challenge to whether the expenses were
    actually paid or incurred. The IRS’s Pretrial Memorandum did not make such a
    challenge either. Nor did the IRS raise in its briefs the question of whether the yacht
    expenses were paid or incurred. Under the circumstances, the IRS did not preserve
    any argument that the nondepreciation yacht expenses were not paid or incurred. See
    Amazon.com, Inc., 148 T.C. at 220.
    38
    [*38] C.     FMC cannot deduct depreciation for its airplane.
    We next address the deductions for depreciation of FMC’s
    airplane. Section 167(a) allows a deduction for depreciation of property
    if the property is either (1) used in a trade or business or (2) held for the
    production of income. Treasury Regulation § 1.167(a)-10(b) provides
    that a depreciation deduction under section 167(a) is available only for
    the tax year in which the property was placed in service and later years.
    Section 179(a) allows a taxpayer to affirmatively elect to deduct the
    entire cost of certain property for the year in which the property is
    placed in service. The election must be made on the taxpayer’s return.
    § 79(c).
    FMC’s 2008 and 2009 returns claimed depreciation deductions for
    its airplane and did not elect to deduct for either year the entire cost of
    the airplane under section 179. Nevertheless, the IRS’s challenge to the
    depreciation deductions for FMC’s airplane is that the airplane was
    never placed in service within the meaning of “[s]ection 179(a).” Both
    sections 167 and 179 require that the property be placed into service as
    a condition for deductions. See § 179(a) (providing that a depreciation
    deduction “shall be allowed as a deduction for the taxable year in which
    the section 179 property is placed in service”); 
    Treas. Reg. § 1.167
    (a)-
    10(b) (“The period for depreciation of an asset shall begin when the asset
    is placed in service . . . .”); 
    Treas. Reg. § 1.167
    (a)-11(e)(1)(i) (defining
    when property is placed in service for purpose of Treasury Regulation
    § 1.167(a)-10(b)); Baca v. Commissioner, 
    T.C. Memo. 2019-78
    , at *25
    (determining whether an asset was placed in service for purpose of
    section 179 by reference to the definition of placed in service in Treasury
    Regulation § 1.167(a)-11(e)(1)(i)). Therefore, we are willing to consider
    the proposition that section 167 depreciation deductions for FMC’s
    airplane should be denied on placed-in-service grounds even though the
    IRS contests the depreciation deductions as if FMC sought a section 179
    deduction.
    Regulations provide that property is considered “first placed in
    service” when it is “first placed in a condition or state of readiness and
    availability for a specifically assigned function, whether in a trade or
    business [or] in the production of income . . . .” 
    Treas. Reg. § 1.167
    (a)-
    11(e)(1)(i).
    It is the “taxpayer . . . who gets to determine what an asset’s
    ‘specifically assigned function’ is.” Brown v. Commissioner, 
    T.C. Memo. 2013-275
    , at *35 (first citing Consumers Power Co. v. Commissioner, 89
    39
    [*39] T.C. 710 (1987); and then citing Valley Nat. Fuels v.
    Commissioner, 
    T.C. Memo. 1991-341
    , 1991 Tax. Ct. Memo. LEXIS 390,
    aff’d without published opinion, 
    990 F.2d 1266
     (9th Cir. 1993)). FMC’s
    specifically assigned function for the airplane was for Dr. Conrad to
    personally fly the airplane in order to travel cross-country for client
    meetings and business trips. Dr. Conrad credibly testified that the
    purpose of buying the airplane was for him to pilot the airplane himself.
    He credibly testified that hiring licensed pilots to fly FMC’s airplane
    would have been not only cost prohibitive but also logistically
    challenging because of the lack of available pilots who were certified to
    fly this particular type of airplane.
    Because Dr. Conrad never completed his certification and was
    thus never licensed to fly FMC’s airplane, the airplane was never “in a
    condition or state of readiness and availability for [its] specifically
    assigned function” in either 2008 or 2009. See 
    Treas. Reg. § 1.167
    (a)-
    11(e)(1)(i). 33
    Our conclusion is not affected by the fact that FMC leased the
    airplane on a few occasions to third parties while waiting for Dr. Conrad
    to finish earning his license to pilot the airplane. In Cooper v.
    Commissioner, 
    88 T.C. 84
    , 113–14 (1987), and Waddell v. Commissioner,
    
    86 T.C. 848
    , 898 (1986), aff’d, 
    841 F.2d 264
     (9th Cir. 1988), we held that
    the assets in question were placed in service as soon as they were
    available to be leased because the taxpayers’ specifically assigned
    functions were to lease the assets to third parties. These assets,
    however, are distinguishable from the FMC airplane because FMC’s
    specifically assigned function for its airplane was to allow Dr. Conrad to
    33 We reached a similar conclusion that the lack of certified pilots precludes an
    airplane from being available for its specifically assigned function (of being flown) in
    Douglas v. Commissioner, 
    T.C. Memo. 2011-214
    , 
    2011 WL 3849550
    . In that case, the
    taxpayers’ wholly owned S corporation bought an airplane for use in its trucking
    business. Id. at *1. The S corporation’s specifically assigned function for the airplane,
    we held, was to allow the S corporation to fly truck drivers on short notice so that they
    could replace other drivers who were unable to finish their deliveries. Id. at *2. We
    concluded that the S corporation had never placed the airplane in service because none
    of its employees had been licensed to fly the airplane. Id. The record also failed to show
    that it would have been possible for the S corporation to hire outside pilots. Id. Because
    the airplane could not be flown by employees or non-employees, the airplane was never
    capable of being used in the S corporation’s business and was therefore not placed in
    service. Id.; see also Siskiyou Commc’ns, Inc. v. Commissioner, 
    T.C. Memo. 1990-429
    ,
    
    1990 Tax Ct. Memo LEXIS 446
    , at *15 (concluding that the taxpayer’s new phone
    system was not placed in service until the taxpayer’s employees were trained to operate
    the system).
    40
    [*40] personally fly the airplane for cross-country business trips. Since
    this was the intended use of the airplane, Dr. Conrad would need to
    establish that an asset that is not available for its original intended
    function can nonetheless be placed in service by being available for an
    alternative function (in the Conrads’ case, leasing the airplane to third
    parties). The regulations seem unexpressive as to whether a function
    other than the originally intended function can qualify as a specifically
    assigned function. 
    Treas. Reg. § 1.167
    (a)-11(e)(1)(i) (“Property is first
    placed in service when first placed in a condition or state of readiness
    and availability for a specifically assigned function . . . .”). Caselaw
    suggests that only the taxpayer’s original intended function can be the
    specifically assigned function. See Brown, 
    T.C. Memo. 2013-275
    , at *37
    (“An asset must instead be available for its intended use on a regular,
    ongoing basis before we can find it ‘placed in service’ in the tax year in
    question.” (emphasis omitted); the taxpayer’s plane had not been placed
    in service, even though it had been used for a few trips, because the
    specifically assigned function contemplated physical modifications
    completed after the year at issue); Doherty v. Commissioner, 
    T.C. Memo. 1992-573
    , 
    1992 WL 237243
    , at *5 (“Alternate use is not sufficient for an
    asset to be placed in service.” (citing Consumers Power Co., 
    89 T.C. 710
    )).
    Even if a specifically assigned function can be a function other than that
    originally intended by the property owner, leasing of the airplane by
    FMC should not qualify as a specifically assigned function because there
    is no indication that renting the airplane out was as useful to FMC as
    using the airplane itself (piloted by Dr. Conrad). 34 There is no evidence
    of how much rental income FMC earned from leasing the airplane. FMC
    reported total income of $626,587 and $253,947 on its Forms 1120S for
    2008 and 2009, respectively. The table below shows how these amounts
    were broken out on the returns:
    34 We reached a similar conclusion in Valley Nat. Fuels, 
    1991 Tax Ct. Memo LEXIS 390
    , at *26. In that case, the taxpayer attempted to place an ethanol distillation
    plant in service during 1983. Id. at *13. The plant’s specifically assigned function was
    to produce “198.2+ proof” fuel. Id. at *14. We concluded that the plant was not placed
    in service for its specifically assigned function during 1983. Id. The taxpayer argued
    that the plant was placed in service during 1983 because in that year the plant
    produced lower-grade fuel that the taxpayer was able to sell to third parties. Id.
    at *14–15. We rejected the taxpayer’s argument in part because the taxpayer failed to
    show that the lower-grade fuel “was actually sold commercially in . . . a market, or that
    such a market existed.” Id. at *16; see also Olsen v. Commissioner, 
    T.C. Memo. 2021-41
    ,
    at *40 (concluding that the leasing of the taxpayer’s asset did not qualify as placing
    the asset in service in part because the taxpayer “was not engaged in a leasing business
    and his venture was certainly not ‘profit-motivated’”), aff’d on other grounds, 
    52 F.4th 889
     (10th Cir. 2022).
    41
    [*41]                 Description            2008       2009
    Income/Loss from passthrough
    −$48,759   −$37,634
    entities
    Fund management income          641,829    290,329
    Other income                     33,517      1,252
    Total income                  $626,587   $253,947
    Assuming arguendo that the descriptions and amounts above are
    accurate, the most that FMC could have earned from renting the
    airplane was $33,517 in 2008 and $1,252 in 2009, the amounts reported
    as “Other income” for the respective years. (The assumption that the
    amounts reported as “Other income” were composed entirely of rents
    from the airplane is a very generous hypothetical given that no
    supporting evidence such as rental agreements, invoices, testimony, etc.
    has been produced to corroborate the airplane’s rental.) Such revenue
    still would not have covered the cost of expenses incurred from owning
    the airplane. In 2008 FMC incurred $178,917 of expenses related to the
    airplane, well more than “Other income” earned of $33,517. And while
    for 2009 the record does not indicate how much of the $21,893 of storage,
    maintenance, and upkeep for the yacht and the airplane was incurred
    just for the airplane, we find it unlikely that it was less than $1,252. The
    rental of the airplane was at most an effort to reduce the cost of storage,
    maintenance, and upkeep expenses, not an economically profitable use.
    See Doherty v. Commissioner, 
    1992 WL 237243
    , at *4. We hold,
    therefore, that FMC’s leasing of the airplane did not place the airplane
    in service for a specifically assigned function.
    Because the airplane was not placed in service, FMC cannot
    deduct depreciation under section 167(a) with respect to the airplane.
    See 
    Treas. Reg. § 1.167
    (a)-10(b). We therefore sustain the determination
    in the notice of deficiency that FMC is not entitled to depreciation
    deductions with respect to its airplane for 2008 and 2009.
    D.    FMC can deduct expenses for the storage, maintenance, and
    upkeep of its airplane, as well as the cost of Dr. Conrad’s
    flying lessons.
    We next address whether FMC can deduct its costs for the
    storage, maintenance, and upkeep of its airplane, as well as the costs for
    Dr. Conrad’s flying lessons. Section 162(a) allows taxpayers to deduct
    42
    [*42] ordinary and necessary expenses paid or incurred in carrying on a
    trade or business. Section 262(a) prevents a taxpayer from deducting
    otherwise deductible expenses if the expenses are “personal, living, or
    family expenses.”
    Section 274(d)(4) requires the taxpayer to comply with strict
    substantiation requirements for any deductions related to listed
    property. An airplane qualifies as listed property. See § 280F(d)(4)(A)(ii)
    (providing that listed property includes “any . . . property used as a
    means of transportation”); 
    Treas. Reg. § 1
    .280F-6(b)(2)(i) (defining
    “means of transportation” to include airplanes). The IRS did not argue
    at trial or in its briefs that FMC failed to comply with section 274(d) as
    to the airplane. Moreover, the IRS conceded that the airplane expenses
    were actually incurred. See § 274(d) (“No deduction or credit shall be
    allowed . . . (4) with respect to any listed property . . . unless the taxpayer
    substantiates by adequate records or by sufficient evidence . . . the
    amount of such expense . . . .”). Thus, we need not and do not consider
    whether FMC failed to satisfy the strict substantiation requirements of
    section 274(d) for the airplane’s nondepreciation expenses. See Feigh,
    152 T.C. at 277.
    FMC claimed the nondepreciation deductions as section 162(a)
    deductions. (The deductions were reported on Part III, line 1 of the 2008
    and 2009 Schedules K–1 sent to FMC’s shareholders, which reported the
    shareholders’ pro rata shares of FMC’s nonseparately stated income or
    loss. Recall that section 162(a) deductions are included in the
    computation of nonseparately stated income or loss. 
    Treas. Reg. § 1.1366-1
    (a)(2).) In litigation Dr. Conrad likewise contends that the
    storage, maintenance, and upkeep expenses, as well as the cost of his
    flying lessons, were ordinary and necessary in carrying on FMC’s trade
    or business. Dr. Conrad specifically argues that FMC needed the
    airplane because WOMF had clients in 22 states and he was physically
    unable to drive these distances to meet with WOMF’s clients. Dr. Conrad
    also argues that FMC needed him to earn his license to fly the plane
    himself because it was both prohibitively expensive and logistically
    unfeasible for FMC to hire certified pilots to fly the airplane.
    The IRS’s argument against the deductibility of the storage,
    maintenance, and upkeep expenses and the cost of Dr. Conrad’s flying
    lessons is that the only use made of the airplane was training for Dr.
    Conrad to earn his license to fly the airplane, and this was a personal
    use. The IRS argues that since the airplane was used only for Dr.
    Conrad’s (allegedly personal) flying lessons, the expenses incurred for
    43
    [*43] storing, maintaining, and keeping the airplane were not ordinary
    and necessary in carrying on FMC’s trade or business.
    However, FMC bought the airplane so that Dr. Conrad could use
    it for corporate travel. FMC allowed Dr. Conrad to fly the airplane for
    training purposes and incurred the nondepreciation expenses for the
    airplane (including expenses for Dr. Conrad’s flying lessons) so that he
    could earn his license to pilot the airplane himself while he performed
    tasks on behalf of FMC. Although Dr. Conrad failed to ever become
    licensed to fly the airplane, that does not change the fact that the
    expenses (including for Dr. Conrad’s flying lessons) were incurred solely
    for FMC’s business purposes. Furthermore, Dr. Conrad piloted the
    airplane only for this training purpose; he did not use the airplane for
    his personal activities. Thus, these expenses were not personal expenses
    of the Conrads but were instead business expenses of FMC. See Int’l
    Artists, Ltd., 55 T.C. at 104; Tr. Prop. No. 4, 
    21 B.T.A. at
    628–29.
    An expense is deductible under section 162(a) only if it is paid or
    incurred during the year at issue. See Commissioner v. Lincoln Sav. &
    Loan Ass’n, 403 U.S. at 352. During trial, in response to the Court’s
    question as to whether the IRS contested that the expenses were
    incurred, counsel for the IRS responded: “The expenses were incurred.
    The Appeals Officers looked through the documents and disallowed it
    just on the legal basis of the ordinary and necessary business assets.”
    The IRS’s statement is tantamount to a stipulation that whether the
    storage, maintenance, and upkeep expenses and cost of flying lessons
    were paid or incurred is not at issue. See Rule 91(e) (stating that a
    stipulation is binding); Church of Scientology of Cal. v. Commissioner,
    
    83 T.C. 381
    , 524 (1984) (concluding that the IRS’s “concession in open
    court . . . was the equivalent of a [binding] stipulation”), aff’d, 
    823 F.2d 1310
     (9th Cir. 1987).
    We hold that the nondepreciation expenses for FMC’s airplane
    were not personal expenses of the Conrads but were instead ordinary
    and necessary business expenses of FMC that are deductible under
    section 162(a). Therefore, we do not sustain the IRS’s determination that
    deductions for these expenses should be disallowed. 35
    35 Even though FMC cannot deduct depreciation for the airplane under section
    167, this does not compel the disallowance of FMC’s nondepreciation deductions for
    the airplane. Section 162 does not require the taxpayer to place an asset in service for
    a specifically assigned function before a taxpayer may deduct an expense. So long as
    44
    [*44] E.      A summary of the allowed deductions related to the yacht
    and airplane for 2008 and 2009.
    The tables below summarize the allowable deductions by FMC
    and the Conrads related to the yacht and the airplane for 2008 and 2009.
    2008
    Expenses               FMC’s              The
    deductions        Conrads’
    deductions 36
    Airplane and yacht              -0-             -0-
    depreciation expenses
    Airplane and yacht non-        $256,934 37      $131,689
    depreciation expenses
    2009
    Expenses                 FMC’s           The
    deductions      Conrads’
    deductions
    Airplane and yacht              -0-            -0-
    depreciation expenses
    Airplane and yacht non-           $21,893        $11,221
    depreciation expenses
    III.   For both 2008 and 2009 the Conrads can deduct portions of the
    expenses related to their residences.
    The next issue we will address is whether the Conrads can claim
    deductions related to their personal residences for both 2008 and 2009.
    Several Code provisions are relevant to our discussion. Two of the
    the nondepreciation expenses for the airplane are ordinary and necessary to FMC’s
    business (and we conclude that they are), FMC can deduct these expenses. See Noyce
    v. Commissioner, 
    97 T.C. 670
    , 689–90 (1991).
    36 For both 2008 and 2009 51.25% of FMC’s deductions flow through to the
    Conrads. See supra FINDINGS OF FACT, Part I.
    37 The $256,934 consists of $178,917 of nondepreciation expenses related to
    FMC’s airplane and $78,017 of nondepreciation expenses related to FMC’s yacht.
    45
    [*45] relevant provisions are section 162(a) and section 212(2), which
    we have already discussed at length supra.
    Section 163(a) allows a deduction for “all interest paid or accrued
    within the taxable year on indebtedness.” However, section 163(h)(1)
    provides that noncorporate taxpayers cannot deduct any “personal
    interest.” Section 163(h)(2) carves out several different types of interest
    from the definition of personal interest. Section 163(h)(2)(C) provides
    that “any interest which is taken into account under section 469 in
    computing income or loss from a passive activity” is not personal interest
    under section 163(h)(1). A passive activity generally includes a
    taxpayer’s rental activity. § 469(c)(2), (7). Section 163(h)(2)(D) provides
    that “any qualified residence interest” is not personal interest under
    section 163(h)(1). “Qualified residence interest” includes “acquisition
    indebtedness with respect to any qualified residence of the taxpayer.”
    § 163(h)(3)(A). A “qualified residence” includes “the principal residence
    . . . of the taxpayer.” § 163(h)(4)(A)(i)(I).
    Section 164(a)(1) allows a deduction for “State and local . . . real
    property taxes” paid by the taxpayer. Section 262(a) prevents a taxpayer
    from deducting otherwise deductible expenses if the expenses are
    “personal, living, or family expenses.”
    Importantly for our analysis, the Code does not treat all the
    above-mentioned deductions in the same way. Instead, the Code
    classifies deductions into two broad categories. The first category is
    known as above-the-line deductions because they are subtracted from
    gross income to calculate a taxpayer’s adjusted gross income (AGI). See
    § 1 (defining gross income); § 62(a) (defining AGI as gross income minus
    certain deductions); Knight v. Commissioner, 
    552 U.S. 181
    , 184 (2008)
    (explaining that the deductions in the computation of AGI are referred
    to as above-the-line deductions). The taxpayer’s AGI represents “the
    line.” Any other allowable deductions are then subtracted from AGI to
    calculate the taxpayer’s taxable income. This second group of deductions
    is referred to as itemized or “below-the-line” deductions because the
    deductions are subtracted from the taxpayer’s AGI. § 63(d) (defining
    below-the-line deductions as all deductions except deductions in the
    46
    [*46] computation of AGI, i.e., all deductions except above-the-line
    deductions). 38
    As between a below-the-line deduction and an above-the-line
    deduction, a taxpayer normally prefers the latter for three reasons.
    First, an above-the-line deduction is fully deductible regardless of the
    taxpayer’s AGI, while certain below-the-line deductions are limited to
    the total amount of these certain deductions that exceeds a percentage
    of AGI. See, e.g., § 67(a) (miscellaneous itemized deductions); 39 § 68(a)
    (itemized deductions of high-income taxpayers); § 213(a) (medical-
    expense deductions). Second, an above-the-line deduction reduces AGI,
    which, in turn, allows the taxpayer to claim more of the below-the-line
    deductions that are limited to the total amount of deductions that exceed
    a percentage of AGI. See William L. Rudkin Testamentary Tr. v.
    Commissioner, 
    124 T.C. 304
    , 307 (2005) (below-the-line deductions do
    not affect AGI), aff’d, 
    467 F.3d 149
     (2d Cir. 2006), aff’d sub nom. Knight
    v. Commissioner, 
    552 U.S. 181
     (2008). Third, above-the-line deductions
    can be claimed even if the taxpayer takes the standard deduction. § 63(a)
    and (b). By contrast, the taxpayer must choose between claiming the
    standard deduction or claiming below-the-line deductions.
    Section 62(a) defines the deductions that are above-the-line
    deductions. Two types of above-the-line deductions are a section 162(a)
    deduction (i.e., ordinary-and-necessary business expenses of self-
    employed taxpayers) and a section 212 deduction attributable to the
    production of rents. See § 62(a)(1), (4). A section 163(a) deduction for
    interest expenses is not an above-the-line deduction under section 62(a)
    and is therefore an itemized deduction. § 63(d). However, an interest
    expense attributable to a business is an above-the-line deduction under
    section 162(a). See McNutt-Boyce Co. v. Commissioner, 
    38 T.C. 462
    , 464
    (1962), aff’d per curiam, 
    324 F.2d 957
     (5th Cir. 1963); Standing v.
    Commissioner, 
    28 T.C. 789
    , 795 (1957), aff’d, 
    259 F.2d 450
     (4th Cir.
    1958). And an interest expense attributable to the production of rents is
    an above-the-line deduction under section 212(2). See Charles H.
    Ungerman, Jr. Revocable Tr. v. Commissioner, 
    89 T.C. 1131
    , 1136
    38 For taxpayers who claim the standard deduction, taxable income is equal to
    AGI (i.e., gross income minus above-the-line deductions) minus the standard
    deduction. § 63(b).
    39 Under the TCJA, taxpayers may not deduct any miscellaneous itemized
    deductions for tax years 2018 through 2025. § 67(g). This provision is inapplicable here
    because we are dealing with tax years 2008 and 2009.
    47
    [*47] (1987); Koshland v. Commissioner, 
    19 T.C. 860
    , 862–63 (1953),
    aff’d per curiam, 
    216 F.2d 751
     (9th Cir. 1954).
    Real property taxes “directly attributable to a trade or business
    or to property from which rents or royalties are derived” are above-the-
    line deductions. Temp. 
    Treas. Reg. § 1.62
    -1T(d). Real property taxes
    attributable to a taxpayer’s personal use are below-the-line deductions.
    §§ 62, 63(d).
    Section 280A disallows otherwise deductible expenses related to
    a taxpayer’s residence. The relevant portions of section 280A are
    reproduced below:
    Sec. 280A.—Disallowance of certain expenses in connection
    with business use of home, rental of vacation homes, etc.
    (a) General rule.—Except as otherwise provided in
    this section, in the case of a taxpayer who is an individual
    or an S corporation, no deduction otherwise allowable
    under this chapter shall be allowed with respect to use of a
    dwelling unit which is used by the taxpayer during the
    taxable year as a residence.
    (b) Exception for interest, taxes, casualty losses,
    etc.—Subsection (a) shall not apply to any deduction
    allowable to the taxpayer without regard to its connection
    with his trade or business (or with his income-producing
    activity).
    (c) Exceptions for certain business or rental use;
    limitation on deductions for such use.—
    (1) Certain business use.—Subsection (a)
    shall not apply to any item to the extent such item is
    allocable to a portion of the dwelling unit which is
    exclusively used on a regular basis—
    (A) as the principal place of business for
    any trade or business of the taxpayer,
    ....
    (3) Rental use.—Subsection (a) shall not apply
    to any item which is attributable to the rental of the
    dwelling unit or portion thereof . . . .
    ....
    (5) Limitation on deductions.—In the case of
    a use described in paragraph (1) . . . and in the case
    of a use described in paragraph (3) where the
    dwelling unit is used by the taxpayer during the
    48
    [*48]   taxable year as a residence, the deductions allowed
    under this chapter for the taxable year by reason of
    being attributed to such use [i.e., the non-personal
    use described in paragraph (1) or paragraph (3)]
    shall not exceed the excess of—
    (A) the gross income derived from such
    use for the taxable year, over
    (B) the sum of—
    (i) the deductions allocable to
    such use which are allowable under
    this chapter for the taxable year
    whether or not such unit (or portion
    thereof) was so used, and
    (ii) the deductions allocable to
    the trade or business (or rental
    activity) in which such use occurs (but
    which are not allocable to such use) for
    such taxable year.
    Any amount not allowable as a deduction under this
    chapter by reason of the preceding sentence shall be
    taken into account as a deduction (allocable to such
    use) under this chapter for the succeeding taxable
    year. Any amount taken into account for any taxable
    year under the preceding sentence shall be subject
    to the limitation of the 1st sentence of this
    paragraph whether or not the dwelling unit is used
    as a residence during such taxable year.
    (6) Treatment of rental to employer.—
    Paragraphs (1) and (3) shall not apply to any item
    which is attributable to the rental of the dwelling
    unit (or any portion thereof) by the taxpayer to his
    employer during any period in which the taxpayer
    uses the dwelling unit (or portion) in performing
    services as an employee of the employer.
    (d) Use as residence.—
    (1) In general.—For purposes of this section,
    a taxpayer uses a dwelling unit during the taxable
    year as a residence if he uses such unit (or portion
    thereof) for personal purposes for a number of days
    which exceeds the greater of—
    (A) 14 days, or
    49
    [*49]                 (B) 10 percent of the number of days
    during such year for which such unit is rented
    at a fair rental.
    For purposes of subparagraph (B), a unit shall not
    be treated as rented at a fair rental for any day for
    which it is used for personal purposes.
    (2) Personal use of unit.—For purposes of this
    section, the taxpayer shall be deemed to have used a
    dwelling unit for personal purposes for a day if, for
    any part of such day, the unit is used—
    (A) for personal purposes by the
    taxpayer or any other person who has an
    interest in such unit, or by any member of the
    family . . . of the taxpayer or such other
    person;
    ....
    (e) Expenses attributable to rental.—
    (1) In general.—In any case where a taxpayer
    who is an individual or an S corporation uses a
    dwelling unit for personal purposes on any day
    during the taxable year (whether or not he is treated
    under this section as using such unit as a residence),
    the amount deductible under this chapter with
    respect to expenses attributable to the rental of the
    unit (or portion thereof) for the taxable year shall
    not exceed an amount which bears the same
    relationship to such expenses as the number of days
    during each year that the unit (or portion thereof) is
    rented at a fair rental bears to the total number of
    days during such year that the unit (or portion
    thereof) is used.
    (2) Exception for deductions otherwise
    allowable.—This subsection shall not apply with
    respect to deductions which would be allowable
    under this chapter for the taxable year whether or
    not such unit (or portion thereof) was rented.
    (f) Definitions and special rules.—
    (1) Dwelling unit defined.—For purposes of
    this section—
    (A) In general.—The term “dwelling
    unit     includes    a    house,   apartment,
    condominium, mobile home, boat, or similar
    50
    [*50]                property, and all structures or other property
    appurtenant to such dwelling unit.
    The Treasury Department has published proposed regulations
    under section 280A. 
    45 Fed. Reg. 52,399
    , 52,403, 52,405 (Aug. 7, 1980);
    
    48 Fed. Reg. 33,320
    , 33,325 (July 21, 1983). The relevant provisions of
    these proposed regulations are reproduced below:
    § 1.280A-2 Deductibility of expenses attributable to
    business use of a dwelling unit used as a residence.
    ....
    (i) Limitation on deductions.
    ....
    (2) Gross income derived from use of unit.
    ....
    (iii) Exclusion of certain amounts. For
    purposes of section 280A(c)(5)(A) and this
    section, gross income derived from use of a
    unit means gross income from the business
    activity in the unit reduced by expenditures
    required for the activity but not allocable to
    use of the unit itself, such as expenditures for
    supplies and compensation paid to other
    persons. . . .
    ....
    (5) Order of deductions. Business deductions
    with respect to the business use of a dwelling unit
    are allowable in the following order and only to the
    following extent:
    (i) The allocable portions of amounts
    allowable as deductions for the taxable year
    under chapter 1 of the Code with respect to
    the dwelling unit without regard to any use of
    the unit in trade or business, e.g., mortgage
    interest and real estate taxes, are allowable
    as business deductions to the extent of the
    gross income derived from use of the unit.
    (ii) Amounts otherwise allowable as
    deductions for the taxable year under chapter
    1 of the Code by reason of the business use of
    the dwelling unit (other than those which
    would result in an adjustment to the basis of
    property) are allowable to the extent the gross
    51
    [*51]                income derived from use of the unit exceeds
    the deductions allowed or allowable under
    subdivision (i) of this subparagraph.
    (iii) Amounts otherwise allowable as
    deductions for the taxable year under chapter
    1 of the Code by reason of the business use of
    the dwelling unit which would result in an
    adjustment to the basis of property are
    allowable to the extent the gross income
    derived from use of the unit exceeds the
    deductions allowed or allowable under
    subdivisions (i) and (ii) of this subparagraph.
    § 1.280A-3 Deductibility of expenses attributable to the
    rental of a dwelling unit used as a residence.
    .....
    (d) Limitation on deductions if taxpayer has used
    dwelling unit as a residence.
    ....
    (2) Gross rental income. For purposes of
    section 280A and this section gross rental income
    from a unit equals the gross receipts from rental of
    the unit reduced by expenditures to obtain tenants
    for the unit, such as realtors’ fees and advertising
    expense. . . .
    (3) Order of deductions. Deductions with
    respect to the rental use of a dwelling unit are
    allowable in the following order and only to the
    following extent:
    (i) The allocable portions of amounts
    otherwise allowable as deductions for the
    taxable year under chapter 1 of the Code with
    respect to the dwelling unit without regard to
    the rental use of the unit, e.g., mortgage
    interest and real estate taxes, are deductible
    as rental expenses to the extent of the gross
    rental income from the unit.
    (ii) The allocable portions of amounts
    otherwise allowable as deductions for the
    taxable year under chapter 1 of the Code by
    reason of the rental use of the dwelling unit
    (other than those which would result in an
    adjustment to the basis of property) are
    52
    [*52]               allowable to the extent the gross rental
    income exceeds the deductions allowed or
    allowable under subdivision (i) of this
    subparagraph.
    (iii) The allocable portions of amounts
    otherwise allowable as deductions for the
    taxable year under chapter 1 of the Code by
    reason of the rental use of the dwelling unit
    which would result in an adjustment to the
    basis of property are allowable to the extent
    the gross rental income exceeds the
    deductions allowed or allowable under
    subdivisions (i) and (ii) of this subparagraph.
    Proposed regulations “carry no more weight than a position
    advanced on brief by [the IRS].” F.W. Woolworth Co. v. Commissioner,
    
    54 T.C. 1233
    , 1265–66 (1970). However, as will be discussed in more
    detail infra OPINION, Part III.A.5 and III.B.2.d, we will use the
    proposed regulations’ method for calculating the Conrads’ allowable
    deductions under section 280A because the IRS argues that the
    regulations should be used for applying section 280A and because Dr.
    Conrad did not argue at trial or in his brief that the regulations’ method
    should not be used to determine the Conrads’ income from their
    condominium and house.
    Taxpayers report their current-year deductions for business-use-
    of-home expenses, and any business-use-of-home deductions suspended
    and carried forward on account of section 280A(c)(5), on the Form 8829.
    Dr. Conrad’s 2008 and 2009 Forms 8829 are reproduced below. These
    forms will be referred to when discussing how the Conrads reported the
    residence expenses for 2008 and 2009.
    53
    [*53]
    54
    [*54]
    55
    [*55] Taxpayers calculate their current-year deductions for expenses
    related to the renting of their personal residences and any carryforward
    of such expenses from prior years on a worksheet attached to the IRS’s
    instructions to Schedule E. Taxpayers do not attach this worksheet to
    their filed returns. A copy of this blank worksheet is reproduced below:
    I.R.S. Pub. 527, Residential Real Property (Including Rental of Vacation
    Homes) 26 (2008).
    Section 1401 imposes a tax “on self-employment income . . . for
    [the] taxable year.” § 1401(a). “In the case of a husband and wife filing a
    joint return . . . the [self-employment tax] shall not be computed on the
    56
    [*56] aggregate income but shall be the sum of the taxes computed . . .
    on the separate self-employment income of each spouse.” § 6017; see also
    
    Treas. Reg. § 1.6017-1
    (b)(1) (“In the case of a husband and wife filing a
    joint return . . . the tax on self-employment income is computed on the
    separate self-employment income of each spouse, and not on the
    aggregate of the two amounts.”). Both spouses, as joint-return filers, are
    jointly liable for both self-employment taxes. § 6017. Section 1402(b)
    defines “self-employment income” as “the net earnings from self-
    employment derived by an individual,” which, in turn, is defined by
    section 1402(a) as “the gross income derived by an individual from any
    trade or business carried on by such individual, less the deductions
    allowed by this subtitle which are attributable to such trade or
    business.” Section 1402(c)(2) defines a “trade or business” as not
    including income earned by the taxpayer for “the performance of service
    by an individual as an employee.” Self-employment income thus
    includes an independent contractor’s personal-services income. 
    Treas. Reg. § 1.1402
    (a)-1(a)(1). However, section 1402(a) provides that “net
    earnings from self-employment” do not include income earned by
    taxpayers through “rentals from real estate . . . unless such rentals are
    received in the course of a trade or business as a real estate dealer.”
    § 1402(a)(1).
    A.     2008
    The table below shows the parties’ positions on the 2008
    deductions related to the condominium and our conclusions as to these
    deductions. Column 2 states the position the Conrads took on their 2008
    tax return. Column 3 states the IRS’s position in its notice of deficiency,
    while column 4 states the IRS’s primary position in litigation. Column 5
    states the IRS’s alternative position in litigation. Finally, column 6
    states our holding on the deductions for 2008.
    57
    [*57]
    The        Notice of    The IRS’s       The IRS’s       The Court’s
    Conrads’     deficiency    primary       alternative      conclusions
    2008 return                litigating      litigating
    position        position
    Gross income from professional services under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)                $222,207     $222,207        $222,207         $222,207      $222,207
    Total expenditures not allocable to business use of condo. Under Prop. 
    Treas. Reg. § 0
                0               0                0             0
    1.280A-2(i)(2)(iii)
    Gross income derived from business use of condo. Under Prop. 
    Treas. Reg. § 1
    .280A-               222,207      222,207        222,207          222,207        222,207
    2(i)(2)(iii)
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(i)                                           164,006            0              0                0              0
    Amount allowable                                                                                164,006            0              0                0              0
    Limit on further deductions                                                                       58,201      222,207        222,207          222,207        222,207
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii)                                          114,520            0              0                0              0
    Amount allowable                                                                                 58,201            0              0                0              0
    Limit on further deductions                                                                            0      222,207        222,207          222,207        222,207
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii)                                         387,391            0              0                0              0
    Amount allowable                                                                                      0            0              0                0              0
    Disallowed Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii) deductions (carryover to 2009)                  56,319            0              0                0              0
    Disallowed Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii) deductions (carryover to 2009)                387,391            0              0                0              0
    Gross income from rental use under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(2)                           $144,000     $144,000      $144,000         $144,000        $144,000
    Reduction for expenditures not allocable to rental use of condo. Under Prop. 
    Treas. Reg. § 0
                0             0                0               0
    1.280A-3(d)(2)
    Gross income from rental use under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(2) after reduction            144,000      144,000        144,000          144,000        144,000
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(i)                                                 0       18,443              0          164,005        164,005
    Amount allowable                                                                                      0       18,443              0          144,000        144,000
    Limit on further deductions                                                                      144,000      125,557        144,000                0              0
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii)                                                0            0              0                0        114,520
    Amount allowable                                                                                      0            0              0                0              0
    Limit on further deductions                                                                      144,000      125,557        144,000                0              0
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii)                                               0            0              0                0        387,391
    Amount allowable                                                                                      0            0              0                0              0
    Disallowed Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii) deductions (carryover to 2009)                       0            0              0                0        114,520
    Disallowed Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii) deductions (carryover to 2009)                      0            0              0                0        387,391
    Schedule A – mortgage interest                                                                  $216,556     $216,556      $328,010         $184,010        $184,010
    The top 13 rows of the table correspond to the method used in
    Proposed Treasury Regulation § 1.280A-2 for applying section 280A to a
    dwelling unit partly used as an office and partly used as the taxpayer’s
    residence. See id. para. (i). The next 13 rows of the table correspond to
    the method used in Proposed Treasury Regulation § 1.280A-3 for
    applying section 280A to a dwelling unit partly used for rental activity
    and partly used as the taxpayer’s residence. See id. para. (d).
    Section 280A(a) disallows all deductions “with respect to use of a
    dwelling unit which is used by the taxpayer during the taxable year as
    a residence.” The Conrads’ condominium is a dwelling unit. See
    § 280A(f)(1)(A) (providing that a condominium is considered a dwelling
    unit). The condominium is the Conrads’ residence for 2008 because “the
    number of days during” which the Conrads used the condominium for
    personal purposes was 366, which is greater than the greater of (1) 14
    days or (2) 10% of the days the condominium was rented at fair market
    value (with any day of personal use not counting as a day the
    58
    [*58] condominium was rented at fair market value). See § 280A(d)(1).
    Therefore, under section 280A(a), no deductions are allowed with
    respect to any use of the Conrads’ condominium for both the personal
    and rental portions, unless the deductions fall under exceptions
    provided in section 280A. Section 280A(c)(1) exempts from section
    280A(a) those expenses allocable to the portion of the dwelling unit used
    for the taxpayer’s business (under certain conditions). Section 280A(c)(3)
    exempts from section 280A(a) those expenses attributable to renting out
    the dwelling unit. Both types of exempted expenses are subject to the
    deductibility limit of section 280A(c)(5).
    1.     The Conrads’ 2008 tax return
    The Conrads filed Form 8829 on which Dr. Conrad claimed
    condominium deductions purportedly related to his professional
    services. The format of the Form 8829 reflects the interpretation of the
    section 280A(c)(5) limitation by Proposed Treasury Regulation
    § 1.280A-2 with respect to residences used for the taxpayer’s business.
    The Conrads also reported the $144,000 of rental income they received
    from FMC on their Schedule E. However, they did not report any
    deductions related to their condominium on their Schedule E. That is,
    they did not report that the expenses of the condominium were allocable
    to the rental use of the condominium. In litigation Dr. Conrad does not
    suggest that the expenses of the condominium were allocable to the
    rental of the condominium to FMC. As we have explained, Dr. Conrad
    instead argues solely that these deductions were allocable to his
    professional services performed for FMC.
    For 2008 line 13 of Dr. Conrad’s Form 8829 reported a deduction
    of $164,006 of mortgage interest purportedly related to Dr. Conrad’s
    professional services. Mortgage interest is deductible whether or not the
    residence is used in Dr. Conrad’s sole proprietorship. See §§ 163(a),
    (h)(2)(D), 280A(b). The deduction for mortgage interest that is allocable
    to a taxpayer’s business activities corresponds to the first category of
    Proposed Treasury Regulation § 1.280A-2(i)(5), which is Proposed
    Treasury Regulation § 1.280A-2(i)(5)(i). The deduction is shown in the
    table above in the row titled “Deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(i).”
    Line 24 of Dr. Conrad’s Form 8829 reported a $114,520 operating-
    expense carryforward from 2007. The Form 8829 did not claim
    deductions for any operating expenses paid during 2008. Form 8829 is
    designed such that line 24 corresponds to the second expense category
    59
    [*59] of Proposed Treasury Regulation § 1.280A-2(i)(5), which is
    Proposed Treasury Regulation § 1.280A-2(i)(5)(ii). The $114,520
    carryforward is listed in the table above in the row titled “Deductions
    under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii).”
    Finally, Dr. Conrad’s Form 8829 on line 29 reported $72,724 of
    depreciation for 2008 and on line 30 reported $314,667 of depreciation-
    and-excess-casualty-loss carryforwards from the Conrads’ 2007 return.
    Lines 29 and 30 correspond to the third category of expenses governed
    by Proposed Treasury Regulation § 1.280A-2(i)(5), which is Proposed
    Treasury Regulation § 1.280A-2(i)(5)(iii). The amounts reported on these
    two lines total $387,391 and are shown in the table above in the row
    titled “Deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii).”
    In accordance with the ordering rules from Proposed Treasury
    Regulation § 1.280A-2(i)(5) (which the Form 8829 incorporates), the
    Conrads first deducted all their Proposed Treasury Regulation § 1.280A-
    2(i)(5)(i) expenses ($164,006) against Dr. Conrad’s gross income from
    professional services ($222,207). After doing so, the Conrads were left
    with $58,201 of income that could be offset with other deductions. The
    $58,201 was reported on line 15 of Dr. Conrad’s Form 8829. The Conrads
    then used $58,201 of Dr. Conrad’s Proposed Treasury Regulation
    § 1.280A-2(i)(5)(ii) expenses to offset Dr. Conrad’s remaining income.
    The Conrads carried forward $56,319 of Proposed Treasury Regulation
    § 1.280A-2(i)(5)(ii) expenses for use in future years. The $56,319 was
    reported on line 42 of the Form 8829. In addition, the Conrads also
    carried forward the $387,391 of Proposed Treasury Regulation § 1.280A-
    2(i)(5)(iii) expenses for use in future years. The $387,391 was reported
    on line 43 of the Form 8829.
    2.     The notice of deficiency
    The notice of deficiency reflected the IRS’s position that the
    condominium was not exclusively used as Dr. Conrad’s principal place
    of business and that therefore all the expenses related to the
    condominium were not exempted from the disallowance of section
    280A(a) by section 280A(c)(1)(A). The notice of deficiency also implicitly
    disallowed the two types of carryforwards from 2007 reported by the
    Conrads on Dr. Conrad’s Form 8829 because it did not incorporate an
    adjustment for their claimed carryforwards even though Dr. Conrad
    reported professional-services income during 2008. See § 280A(c)(5)
    (flush language).
    60
    [*60] The notice of deficiency did not disallow the $216,556 mortgage
    interest deduction the Conrads claimed as an itemized deduction on
    their Schedule A.
    The notice of deficiency allowed the Conrads an $18,443
    deduction on their Schedule E. The notice of deficiency stated that the
    $18,443 deduction was the “amount . . . for ordinary and necessary
    business purposes and that this amount qualifies under the provisions
    of the . . . Code.” However, the notice of deficiency did not further explain
    what specific expenses the deduction corresponded to or whether the
    deduction related to the renting of the Conrads’ condominium to FMC.
    3.     The IRS’s primary litigating position
    On brief the IRS explains the $18,443 allowance made by the
    notice of deficiency as follows:
    This $18,443.00 was [the IRS’s] allowance for [the
    Conrads’] Business Use of Home deduction. The $18,443.00
    was permitted as a Schedule E deduction because [the
    Conrads] reported rental income from [FMC] to themselves
    for the company’s use of their home for business in the
    amount of $144,000.00 on their Schedule E for the 2008 tax
    year.
    Having thus acknowledged that the notice of deficiency allowed the
    deduction, the IRS’s brief makes the following statement:
    One hundred percent of [the Conrads’] mortgage
    interest deduction for both years at issue rightfully belongs
    on [the Conrads’] Schedule A for the 2008 and 2009 tax
    years. [The Conrads] have not proven their Business Use
    of Home deductions taken are permissible, and as such the
    mortgage interest deduction should only appear on their
    Schedule A for both [2008 and 2009].
    We interpret this statement to be a disavowal of the allowance of the
    $18,443 deduction as a Schedule E deduction by the notice of deficiency.
    Therefore, the IRS’s primary position, which is stated in its posttrial
    briefs, is that 100% of the mortgage interest, which is $328,010, is
    allowable as a Schedule A deduction (i.e., as an itemized deduction),
    rather than as a Schedule E deduction (i.e., as a rental-expense
    deduction).
    61
    [*61]        4.     The IRS’s alternative litigating position
    Column 5 of the table illustrates the IRS’s alternative position,
    which is that the deductions allocable to the rental use of the
    condominium are allowable only to the extent of the section 280A(c)(5)
    limitation and that the limitation is the amount of rent received by the
    Conrads from FMC. In the IRS’s (alternative) view, this limitation
    works as follows: “In this case, the [Conrads’] Business Use of Home
    deduction would be limited to the rents they received - $144,000.00 for
    2008 . . . .” This sentence reflects the view that the gross income in the
    section 280A(c)(5) limitation is the rents received, not Dr. Conrad’s
    professional-services income. This sentence also reflects the view that
    section 280A(c)(5) should be applied in accordance with the
    interpretation of that provision found in Proposed Treasury Regulation
    § 1.280A-3(d)(3)(i). Under that interpretation the mortgage interest and
    taxes allocable to rental use are deductible as rental expenses only to
    the extent of gross rental income. I.R.S. Publication 527, supra,
    at 23–27, adopts a different approach, under which the mortgage
    interest and taxes allocable to rental use are deductible as rental
    expenses even in amounts exceeding gross rental income.
    5.     The Court’s conclusion
    We conclude that the nonpersonal portion of the condominium
    was rented by FMC from the Conrads, and FMC in turn permitted Dr.
    Conrad and other workers to use that portion of the condominium.
    Therefore, as column 6 in the table above shows, we agree with the IRS’s
    alternative position. We disagree with the Conrads’ reporting position
    that the nonpersonal portion of the condominium was used by Dr.
    Conrad’s sole proprietorship, and we therefore reject the Conrads’
    reporting position. The expenses of the Conrads with respect to that
    portion of the condominium were thus rental expenses of the Conrads
    rather than business expenses of Dr. Conrad’s sole proprietorship. See
    § 280A(c)(3). We will therefore apply the ordering rules provided in
    Proposed Treasury Regulation § 1.280A-3(d)(3) rather than those in
    Proposed Treasury Regulation § 1.280A-2(i)(5) to determine the
    Conrads’ deductions for 2008.
    Dr. Conrad does not contend that Proposed Treasury Regulation
    § 1.280A-3(d)(3) should not be used to calculate the section 280A(c)(5)
    limitation, he does not argue that I.R.S. Publication 527, supra,
    at 23–27, should be used to calculate the section 280A(c)(5) limitation,
    and he does not argue that the Conrads should be allowed to deduct
    62
    [*62] mortgage interest as a rental expense in excess of the rent they
    received from FMC. We will not make these arguments on his behalf.
    See Feigh, 152 T.C. at 277.
    In our application of the section 280A(c)(5) limit for 2008, we
    include the $114,520 operating-expense carryforward reported by the
    Conrads on their 2008 return. The IRS’s critique of the Conrads’
    computations used in their tax reporting, i.e., that the nonpersonal
    portion of the condominium was rented to FMC rather than used by Dr.
    Conrad’s sole proprietorship, a critique with which we agree, suggests
    that the $114,520 operating-expense deductions carried forward from
    2007 are not overstated. The Conrads likely used Dr. Conrad’s 2007
    professional-services income as their section 280A(c)(5) limit rather
    than the 2007 rents received from FMC. The 2007 professional-services
    income was likely greater than the 2007 rents received (as it was in
    2008). In our computation of the section 280A(c)(5) limit for 2008, we
    include the $314,667 carryforward of depreciation and excess casualty
    loss expenses from 2007 for similar reasons. We also include the
    $328,010 in deductible mortgage interest the Conrads paid during 2008
    ($164,005 of which was allocable to rental use). We also include $72,724
    of depreciation for 2008 reported on Dr. Conrad’s Form 8829. The IRS
    does not challenge the accuracy of this amount. It argues only that the
    nonpersonal part of the condominium was used to rent to FMC
    (alternative position) and that the condominium was not used in Dr.
    Conrad’s sole proprietorship (primary position).
    For 2008 the Conrads paid $328,010 of mortgage interest. On Dr.
    Conrad’s Form 8829 the Conrads divided the expenses related to the
    condominium and the house evenly between the portions of the
    residences used by FMC and the portions used by them personally. The
    IRS has not argued that we should adjust this allocation method.
    Therefore, we will accept the Conrads’ method and will divide the
    mortgage interest related to the condominium equally between their
    personal and rental activities. See Feigh, 152 T.C. at 277.
    Half of the Conrads’ mortgage interest, $164,005, is attributable
    to rental use. This half is deductible as an above-the-line rental expense
    only to the extent of the $144,000 of rental income FMC paid to the
    Conrads because of the limit imposed by Proposed Treasury Regulation
    § 1.280A-3(d)(3)(i). The excess, $20,005, is allowable as a Schedule A
    deduction. See §§ 163(a), (h)(2)(D), 280A(b); Coffman v. Commissioner,
    
    T.C. Memo. 2000-7
    , slip op. at 11 (concluding that when the gross-
    income limitation of section 280A(c)(5) prevents the taxpayers from
    63
    [*63] deducting a portion of their mortgage interest as a business
    deduction, the portion of the mortgage interest disallowed as a business
    deduction is an itemized deduction for the year at issue). In addition,
    the other half of the $328,010 of mortgage interest, which is attributable
    to the Conrads’ personal use of the condominium, is allowable as a
    Schedule A deduction. See §§ 163(a), (h)(2)(D), 280A(b).
    Therefore, we hold that for 2008 $144,000 of mortgage interest is
    deductible as an above-the-line rental-expense deduction. See
    §§ 62(a)(4), 212(2), 280A(c)(3). Also, another $184,010 of mortgage
    interest is an itemized deduction (consisting of (1) the $164,005 of
    mortgage interest attributable to the personal portion of the
    condominium and (2) the $20,005 of the mortgage interest attributable
    to the rental portion of the condominium but that cannot be deducted as
    a rental expense for 2008 because of section 280A(c)(5) and Proposed
    Treasury Regulation § 1.280A-3(d)(3)(i)). 40 See §§ 163(a), (h)(2)(D),
    280A(b).
    As discussed supra OPINION, Part III.A.1, the Conrads deducted
    $58,201 of operating-expense carryforwards on Dr. Conrad’s Form 8829
    for 2008. The Conrads also carried forward an additional $56,319 of
    operating-expense deductions into 2009. After the allowance of their
    deduction for mortgage interest allocable to their rental activity, the
    Conrads may not deduct any additional residence expenses against their
    rental income. See § 280A(c)(5); Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii).
    Therefore, we conclude that the Conrads must carry forward the
    $114,520 of operating expenses (which is the sum of $58,201 and
    $56,319) to 2009.
    As discussed supra OPINION, Part III.A.1, the Conrads claimed
    a current-year depreciation deduction of $72,724 on Dr. Conrad’s Form
    8829 for the condominium and a $314,667 depreciation-and-excess
    casualty-loss carryforward from 2007. The Conrads did not deduct
    either of these amounts on Dr. Conrad’s Form 8829 but instead carried
    forward the deductions to 2009. We agree with the Conrads that the
    carryforwards are appropriate. Thus, the Conrads must carry forward
    40 The notice of deficiency did not disallow the $216,556 mortgage interest
    expense the Conrads claimed as an itemized deduction (i.e., a Schedule A deduction).
    Furthermore, the IRS’s opening brief contends that all of the Conrads’ $328,010 of
    mortgage interest should be claimed on their Schedule A. Thus, we conclude that the
    IRS does not dispute that the mortgage interest on the condominium is “qualified
    residence interest.” See § 163(h)(3)(A); Feigh, 152 T.C. at 277. Qualified residence
    interest is exempt from section 280A(a) by section 280A(b).
    64
    [*64] $387,391 of depreciation and excess casualty loss expenses (which
    is the sum of $72,724 and $314,667) to 2009.
    Having determined the allowable deductions under section
    280A(c)(3) and (5) ($144,000), our final step is to determine whether any
    other provision in section 280A further limits the Conrads’ deductions.
    During 2008 and 2009 the Conrads’ extended family used the portions
    of the condominium rented to FMC for personal purposes while visiting
    the Conrads. This personal use is attributed to the Conrads. See
    § 280A(d)(2)(A) (attributing personal use of the residence by the
    taxpayer’s family to the taxpayer). Because we conclude that the
    Conrads used their residences for rental activity instead of as a home
    office in Dr. Conrad’s business, the Conrads’ personal use of the rented
    portions of the condominium does not result in the disallowance of any
    of the Conrads’ deductions for 2008. The Code provides that taxpayers
    cannot deduct any residence expenses as business expenses when the
    taxpayers also use the business portion of the residence for personal
    activities. See § 280A(c)(1); H.R. Rep. No. 94-658, at 161 (1975), as
    reprinted in 1976-3 C.B. (Vol. 2) 695, 853 (“The use of a portion of a
    dwelling unit for both personal purposes and for the carrying on of a
    trade or business does not meet [the section 280A(c)(1)] exclusive use
    test.”); S. Rep. No. 94-938, at 148 (1976), as reprinted in 1976-3 C.B.
    (Vol. 3) 49, 186 (same); Perry v. Commissioner, 
    T.C. Memo. 1996-194
    ,
    slip op. at 14–15 (“The use of a portion of a dwelling unit for both
    personal and business purposes does not meet the exclusive use
    requirement of section 280A(c)(1).”). However, no such exclusivity
    restriction relates to section 280A(c)(3). See § 280A(c)(1)(A) (“Subsection
    (a) shall not apply to any item to the extent such item is allocable to a
    portion of the dwelling unit which is exclusively used on a regular basis
    as the principal place of business for any trade or business of the
    taxpayer . . . .”); § 280A(c)(3) (“Subsection (a) shall not apply to any item
    which is attributable to the rental of the dwelling unit or portion thereof
    . . . .”); Francisco v. Commissioner, 
    119 T.C. 317
    , 323 (2002) (“We can
    reasonably assume Congress intentionally chose different words in
    closely related statutory provisions to produce a different meaning.”),
    aff’d, 
    370 F.3d 1228
     (D.C. Cir. 2004). Therefore, the Conrads’ personal
    use of the rented portion of the condominium does not prevent them from
    deducting any of their expenses.
    A taxpayer who has expenses attributable to renting out a
    residence may find the deductions attributable to such expenses limited
    by section 280A(e)(1). The IRS does not suggest that this provision limits
    the deductions for the expenses attributable to the Conrads’ rental of
    65
    [*65] the condominium to FMC. We therefore need not address this
    potential argument. See Feigh, 152 T.C. at 277.
    Section 280A(c)(6) bars deductions otherwise allowed under
    section 280A(c)(3) when (1) an employee rents part or all of the
    employee’s personal residence to his or her employer (provided the
    rental expenses relate to part or all of the personal residence rented to
    the employer) and (2) the employee performs services for the employer
    within the personal residence. The IRS cited section 280A(c)(6) in its
    Pre-trial Memorandum as support for disallowing the deductions
    related to the condominium; however, the IRS then failed to assert any
    argument under section 280A(c)(6) in its briefs. The IRS has thus
    abandoned any argument regarding section 280A(c)(6). See
    Amazon.com, Inc., 148 T.C. at 220. Therefore, we hold that section
    280A(c)(6) does not bar any of the Conrads’ deductions for 2008. 41
    In sum, we hold that for 2008 the Conrads may deduct
    (1) $144,000 of mortgage interest as an above-the-line rental-expense
    deduction and (2) $184,010 of mortgage interest as an itemized
    deduction. There is a carryforward of (1) $114,520 of operating expenses
    and (2) $387,391 of depreciation and excess casualty loss expenses to
    2009. 42
    41  Although the text of section 280A(c)(6) refers to “employees” and
    “employers,” parts of the legislative history claim that section 280A(c)(6) was intended
    to also apply to independent contractors such as the Conrads. See H.R. Rep. No. 99-
    426, at 134 (1985), as reprinted in 1986-3 C.B. (Vol. 2) 1, 134 (stating that for section
    280A(c)(6), “an individual who is an independent contractor is treated as an employee,
    and the party for whom such individual is performing services is treated as an
    employer”); S. Rep. No. 99-313, at 84 (1986), as reprinted in 1986-3 C.B. (Vol. 3) 1, 84
    (same). Because we conclude that the IRS has waived any argument under section
    280A(c)(6), we need not decide whether the legislative history is enough to overcome
    the plain language in section 280A(c)(6) that the provision applies to “employees.”
    42 The Conrads did not report that the activities of Dr. Conrad’s sole
    proprietorship resulted in any self-employment income. That is because Dr. Conrad’s
    Schedule C reported that his $222,207 of professional-services income was offset by
    $222,207 of residence expenses purportedly related to the use of the condominium for
    his professional-services sole proprietorship. Because in our view these expenses
    related not to his sole proprietorship but to rental use, the Conrads underreported Dr.
    Conrad’s self-employment income by $222,207 by improperly deducting $222,207
    against his professional-services income.
    66
    [*66] B.              2009
    The table below shows the parties’ positions on the 2009
    deductions and our conclusions as to these deductions. Column 2 states
    the position the Conrads took on their 2009 tax return. Column 3 states
    the IRS’s position in its notice of deficiency. Column 4 states the IRS’s
    primary position in litigation, while column 5 states the IRS’s
    alternative position in litigation. Finally, column 6 states our holding on
    the deductions for 2009.
    The      Notice of    The IRS’s     The IRS’s       The
    Conrads’   deficiency    primary     alternative     Court’s
    2009                  litigating    litigating   conclusions
    return                  position      position
    Dr. Conrad’s professional services
    Gross income from professional services under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)                                $288,000    $288,000     $288,000       $288,000     $183,667
    Total expenditures not allocable to business use of residences under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)(iii)          0           0            0              0            0
    Gross income derived from business use of residences under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)(iii).              288,000     288,000      288,000        288,000      183,667
    Dr. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(i)                                               61,982           0            0              0            0
    Amount allowable                                                                                                 61,982           0            0              0            0
    Limit on further deductions                                                                                      226,018     288,000      288,000        288,000      183,667
    Dr. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii)                                              92,743           0            0              0            0
    Amount allowable                                                                                                 92,743           0            0              0            0
    Limit on further deductions                                                                                      133,275     288,000      288,000        288,000      183,667
    Dr. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii)                                            460,115           0            0              0            0
    Amount allowable                                                                                                133,275           0            0              0            0
    Dr. Conrad’s disallowed Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii) deductions (carryover to 2010)                          0           0            0              0            0
    Dr. Conrad’s disallowed Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii) deductions (carryover to 2010)                   326,840           0            0              0            0
    Mrs. Conrad’s accounting services
    Gross income from accounting services under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)                                   $81,267     $81,267      $81,267        $81,267      $81,267
    Total expenditures not allocable to business use of residences under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)(iii)          0           0            0              0            0
    Gross income derived from business use of residences under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(2)(iii)                81,267      81,267       81,267         81,267       81,267
    Mrs. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(i)                                                   0           0            0              0            0
    Amount allowable                                                                                                      0           0            0              0            0
    Limit on further deductions                                                                                       81,267      81,267       81,267         81,267       81,267
    Mrs. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii)                                             91,742       3,885        3,885          3,885            0
    Amount allowable                                                                                                 91,742       3,885        3,885          3,885            0
    Limit on further deductions                                                                                            0      77,382       77,382         77,382       81,267
    Mrs. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii)                                                 0           0            0              0            0
    Amount allowable                                                                                                      0           0            0              0            0
    Mrs. Conrad’s disallowed Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(ii) deductions (carryover to 2010)                         0           0            0              0            0
    Mrs. Conrad’s disallowed Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(iii) deductions (carryover to 2010)                        0           0            0              0            0
    Gross income from rental use under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(2) before reductions                              $0           $0     $104,333       $104,333     $104,333
    Reduction for expenditures not allocable to rental use of condo under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(2)             0            0            0              0            0
    Gross income from rental use under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(2) after reduction                                 0            0      104,333        104,333      104,333
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(i)                                                                0            0            0         61,983       61,983
    Amount allowable                                                                                                     0            0            0         61,983       61,983
    Limit on further deductions                                                                                           0            0      104,333         42,350       42,350
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii)                                                               0            0            0         70,160      184,680
    Amount allowable                                                                                                     0            0            0         38,465       42,350
    Limit on further deductions                                                                                           0            0      104,333              0            0
    Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii)                                                              0            0            0              0      460,115
    Amount allowable                                                                                                     0            0            0              0            0
    Disallowed Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii) deductions (carryover to 2010)                                      0            0            0         27,810      142,330
    Disallowed Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii) deductions (carryover to 2010)                                     0            0            0              0      460,115
    Schedule A – mortgage interest plus real estate taxes                                                           $102,927    $123,965     $123,965        $61,983      $61,983
    67
    [*67] The top 28 rows of the table for 2009 correspond to the method
    used in Proposed Treasury Regulation § 1.280A-2 for applying section
    280A to a dwelling unit partly used as an office and partly used as the
    taxpayer’s residence. See id. para. (i). The next 13 rows of the table
    correspond to the method used in Proposed Treasury Regulation
    § 1.280A-3 for applying section 280A to a dwelling unit partly used for
    rental activity and partly used as the taxpayer’s residence. See id.
    para. (d).
    One major difference between the 2008 and 2009 tables is that
    the 2009 table includes a second section corresponding to Proposed
    Treasury Regulation § 1.280A-2. This is because the Conrads deducted
    some of the residence expenses on Mrs. Conrad’s 2009 Schedule C. The
    Conrads did not report these deductions as business-use-of-home
    expenses. (They reported the deductions directly on Mrs. Conrad’s
    Schedule C rather than indirectly through Form 8829.) The Schedule C
    for Mrs. Conrad reported deductions of $48,542 of condominium fees (the
    actual condominium fees paid by the Conrads were only $24,271) and
    $43,200 for rent for the house. The notice of deficiency determined that
    the $48,542 and $43,200 deductions should be disallowed because the
    corresponding expenses do not meet the requirements of section
    162(a). 43 Because we believe that these expenses are attributable to the
    rental use of the residence (in reduced amounts, $12,136 of
    condominium fees and $21,600 of rent expense for the house) and are
    therefore deductible under section 212(2), we reject the IRS’s argument
    that the deductions should be disallowed for their failure to meet the
    requirements of section 162(a). However, the IRS’s argument that
    section 280A limits the expenses of the condominium and the house
    should also be considered. The $12,136 of condominium fees allocable to
    the rental portion of the condominium and the $21,600 of rent expense
    allocable to the rental portion of the house are the expenses of the
    Conrads’ residences under section 280A(a). Therefore, we will analyze
    the deductions for condominium fees for the condominium and rent for
    43 Mrs. Conrad reported the deduction for condominium fees for the
    condominium as an “office expense” and the deduction for rent for the house as “[r]ent
    or lease” of “[v]ehicles, machinery, and equipment.” The IRS did not realize that these
    two expenses were residence expenses until Dr. Conrad’s testimony at trial. It is
    therefore understandable why the notice of deficiency did not disallow Mrs. Conrad’s
    Schedule C deductions for condominium fees for the condominium and rent for the
    house under section 280A.
    68
    [*68] the house under section 280A in order to determine whether the
    Conrads can deduct these expenses. 44
    1.      The Conrads’ 2009 rental income from FMC
    The first numerical row of the table is for Dr. Conrad’s gross
    income for professional services. Dr. Conrad’s Schedule C, the notice of
    deficiency, and the IRS’s primary and alternative litigating positions all
    embrace the view that Dr. Conrad earned $288,000 of professional-
    services income during 2009. However, Dr. Conrad testified at trial that
    the $104,333 of rent from FMC was reported as part of the $288,000
    reported as professional-services income on his Schedule C. This
    testimony was credible. We consequently find that the $288,000
    reported as compensation for Dr. Conrad’s professional services was
    actually composed of (1) $104,333 of rental payments from FMC and
    (2) $183,667 (i.e., $288,000 minus $104,333) of compensation from FMC
    for Dr. Conrad’s professional services.
    Dr. Conrad’s income earned as president of FMC ($183,667) and
    Mrs. Conrad’s income earned for accounting services to FMC ($81,267)
    are both subject to self-employment tax. The Conrads’ rental income
    from FMC, however, is not subject to self-employment tax because the
    Conrads are not “real estate dealers.” See § 1402(a). Therefore, the
    Conrads overreported Dr. Conrad’s self-employment income by
    reporting that the $104,333 of rents received was income of his sole
    proprietorship. The parties’ Rule 155 computations will determine how
    much self-employment tax the Conrads owe. When making these
    calculations, the parties should exclude the $104,333 of rental income
    from Dr. Conrad’s self-employment income.
    2.      Residence deductions
    We now turn to the residence deductions the Conrads claimed for
    2009. Section 280A(a) disallows all deductions “with respect to use of a
    dwelling unit which is used by the taxpayer during the taxable year as
    a residence.” The condominium and the house are dwelling units. See
    44 The IRS did not argue that the calculation of the allowable deductions under
    section 280A should be done property by property, i.e., once for only the condominium
    and once for only the house. This would require the Court to determine the rental
    income and expenses attributable to each of the properties. We will not make this
    argument on the IRS’s behalf, see Feigh, 152 T.C. at 277, and we will therefore analyze
    the rental income and expenses for 2009 related to the Conrads’ residences on an
    annual basis.
    69
    [*69] § 280A(f)(1)(A) (a condominium and a house both qualify as
    dwelling units). The next question is whether the condominium was a
    residence of the Conrads for 2009. The condominium was used for
    personal purposes for the first half of the year, which was 181 days. 45
    See § 280A(d)(1). This amount is greater than the greater of (1) 14 days
    or (2) 10% of the days during 2009 the condominium was rented at fair
    market value (with any day of personal use not counting as a day rented
    at fair market value). See id. Therefore, the condominium was used by
    the Conrads as a residence during 2009.
    The house was used for personal purposes for the last half of 2009,
    which was 184 days. See id. This amount is greater than the greater of
    (1) 14 days or (2) 10% of the days during 2009 the house was rented at
    fair market value (with any day of personal use not counting as a day
    rented at fair market value). Id. Therefore, the house was used by the
    Conrads as a residence during 2009. Under section 280A(a), no
    deductions are allowed with respect to any use of the Conrads’
    residences for either the personal or rental portions, unless the
    deductions fall under exceptions provided in section 280A.
    a.      The Conrads’ 2009 tax return
    The Conrads contend that they used both residences in their sole
    proprietorships. They filed Form 8829 on which Dr. Conrad claimed
    deductions purportedly related to his professional services. The format
    of the Form 8829 reflects the interpretation of the section 280A(c)(5)
    limitation by Proposed Treasury Regulation § 1.280A-2. In litigation Dr.
    Conrad still defends the tax treatment reflected on his 2009 Form 8829.
    As with our discussion for 2008, we will first discuss how the
    Conrads calculated the deductions claimed on their return. For 2009 line
    12 of Dr. Conrad’s Form 8829 reported a $40,944 deduction for mortgage
    interest. Line 13 of the Form 8829 reported a $21,038 deduction for real
    estate taxes. These two lines totaled $61,982. Both mortgage interest
    and real estate taxes are deductible whether or not the residence is used
    45 For purposes of this Opinion, we assume that the Conrads moved out of the
    condominium on June 30, 2009, and into the house on July 1, 2009. There is not enough
    information in the record for us to draw a conclusion as to the exact dates. The record
    indicates only that the Conrads rented the house for six months in 2009, which fits our
    assumption that they moved into the house on July 1. Regardless of the exact dates,
    the Conrads’ personal use of the condominium and the house is sufficient for both the
    condominium and the house to qualify as the Conrads’ residences under section
    280A(d).
    70
    [*70] in the Conrads’ sole proprietorships. See §§ 163(a), (h)(2)(D),
    164(a)(1), 280A(b). These lines correspond to the first category of
    Proposed Treasury Regulation § 1.280A-2(i)(5), which is Proposed
    Treasury Regulation § 1.280A-2(i)(5)(i). The amounts are shown in the
    table above in the row titled “Dr. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-2(i)(5)(i).”
    Dr. Conrad’s Form 8829 also claimed deductions of $1,763 for
    insurance, $3,755 for utilities, and $30,906 for other expenses. These
    three deductions total $36,424 and were reported on line 23 of the Form
    8829. In addition, line 24 of the Form 8829 reported $56,319 of
    operating-expense carryforwards from the Conrads’ 2008 return. Lines
    23 and 24 correspond to the second category of expenses in Proposed
    Treasury Regulation § 1.280A-2(i)(5), which is Proposed Treasury
    Regulation § 1.280A-2(i)(5)(ii). The amounts the Conrads reported on
    these two lines total $92,743 and are shown in the table above in the
    row titled “Dr. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-
    2(i)(5)(ii).”
    Finally, Dr. Conrad’s Form 8829 on line 29 reported $72,724 of
    depreciation for 2009 and on line 30 reported $387,391 of depreciation-
    and-excess-casualty-loss carryforwards from the Conrads’ 2008 return.
    These two lines correspond to the third category of expenses in Proposed
    Treasury Regulation § 1.280A-2(i)(5), which is Proposed Treasury
    Regulation § 1.280A-2(i)(5)(iii). The amounts the Conrads reported on
    these two lines total $460,115 and are shown in the table above in the
    row titled “Dr. Conrad’s deductions under Prop. 
    Treas. Reg. § 1
    .280A-
    2(i)(5)(iii).”
    In accordance with the ordering rules from Proposed Treasury
    Regulation § 1.280A-2(i)(5) (which the Form 8829 incorporates), the
    Conrads first deducted all their Proposed Treasury Regulation § 1.280A-
    2(i)(5)(i) expenses ($61,982) against Dr. Conrad’s gross income from his
    professional services ($288,000). After doing so, the Conrads were left
    with $226,018 of income that could be offset with other deductions. The
    $226,018 was reported on line 15 of the Form 8829. The Conrads next
    deducted all their Proposed Treasury Regulation § 1.280A-2(i)(5)(ii)
    expenses ($92,743). After doing so, the Conrads were left with $133,275
    of income that could be offset by further deductions. The $133,275 was
    reported on line 27 of the Form 8829. Finally, the Conrads used a portion
    of their Proposed Treasury Regulation § 1.280A-2(i)(5)(iii) expenses to
    offset the remaining $133,275 of Dr. Conrad’s professional-services
    income (consisting of $72,724 of depreciation for 2009 and $60,551 of
    71
    [*71] depreciation and excess casualty loss expenses carried forward
    from 2008). After claiming this deduction, the Conrads carried forward
    $326,840 of Proposed Treasury Regulation § 1.280A-2(i)(5)(iii) expenses
    for use in future years. The $326,840 was reported on line 43 of the Form
    8829.
    Mrs. Conrad’s Schedule C reported $81,267 of income from her
    accounting sole proprietorship, a $48,542 deduction purportedly for an
    “office expense,” and a $43,200 deduction purportedly for “[r]ent or
    lease” of “[v]ehicles, machinery, and equipment.” Dr. Conrad has
    conceded that these two expenses were actually for $48,542 of
    condominium fees and $43,200 of rent for the house. Both types of
    expenses therefore relate to the Conrads’ residences and, had they been
    reported on the Form 8829, would have corresponded to the second
    category of business-use-of-home deductions, which are described by
    Proposed Treasury Regulation § 1.280A-2(i)(5)(ii). For convenience, the
    table lists the amounts as if they had been reported on Form 8829 as the
    second category of business-use-of-home deductions. Had they been so
    reported, the $91,742 of deductions would have been limited to $81,267.
    But because Mrs. Conrad did not use Form 8829 to report the $91,742,
    we have (contrary to the form) shown on the table in the row “Amount
    allowable” the allowed amount of $91,742. This reflects that Mrs.
    Conrad did not observe the $81,267 limit and deducted the full $91,742.
    For 2009 the Conrads also reported the $104,333 of rental income
    they received from FMC. However, they did not report this rental
    income, or any deductions related to their residences, on their
    Schedule E. That is, they did not report that the expenses of the
    condominium and the house were allocable to their rental activities. In
    litigation Dr. Conrad again does not suggest that the expenses of the
    condominium and the house were allocable to the rental of the
    residences to FMC.
    b.    The notice of deficiency
    The notice of deficiency reflected the position that the residences
    were not exclusively used as Dr. Conrad’s principal place of business and
    that therefore all the expense deductions related to the residences were
    disallowed by section 280A(a) and not exempted from the disallowance
    by section 280A(c)(1)(A). The notice of deficiency also implicitly
    disallowed the two types of carryforwards from 2008 reported by the
    Conrads on Dr. Conrad’s Form 8829 because it did not incorporate an
    adjustment for their claimed carryforwards even though Dr. Conrad
    72
    [*72] reported professional-services income during 2009 against which
    the carryforwards could be deducted. See § 280A(c)(5) (flush language).
    The notice of deficiency disallowed the deductions claimed on
    Mrs. Conrad’s Schedule C on the grounds that they are not ordinary and
    necessary expenses of Mrs. Conrad’s accounting sole proprietorship,
    except that the notice of deficiency allowed a $3,885 deduction on Mrs.
    Conrad’s Schedule C as a business-use-of-home deduction. The notice of
    deficiency did not explain how the IRS determined this to be the correct
    amount of allowable deductions.
    The notice of deficiency did not disallow the $81,889 mortgage
    interest deduction or the $21,038 real estate tax deduction claimed as
    itemized deductions by the Conrads on their Schedule A.
    c.     The IRS’s primary and alternative litigating
    positions
    As to Mrs. Conrad’s Schedule C deduction for $48,542 of
    condominium fees, the IRS correctly observes that under the
    Supplemental Stipulation the actual amount paid was $24,271. We also
    note that the $24,271 relates to the entire condominium, a portion of
    which was used for personal purposes. As to Mrs. Conrad’s Schedule C
    deduction for $43,200 of house rent, the IRS does not dispute that this
    was the amount of rent paid for the house for 2009. The IRS’s brief
    challenged the deductibility of these expenses ($24,271 and $43,200) on
    the grounds that they were not “paid or incurred in connection with”
    Mrs. Conrad’s “accounting business.”
    As to the $288,000 business-use-of-home deductions claimed on
    Dr. Conrad’s Form 8829, the IRS’s primary position is that these
    deductions are disallowed by section 280A(a) and not exempted by
    section 280A(c)(1). Under this primary position the $81,889 of mortgage
    interest paid by the Conrads on the condominium would be deductible
    only as an itemized deduction. The IRS’s alternative position is that the
    $288,000 business-use-of-home deductions are limited by section
    280A(c)(5) to the $104,333 in rents received by the Conrads from FMC
    for its use of the condominium and the house.
    d.     The Court’s conclusion
    As column 6 in the table shows, we reject the Conrads’ position.
    We do so because we conclude that the Conrads did not use their
    residences for their sole proprietorships during 2009. The Conrads
    73
    [*73] rented a portion of their residences to FMC which, in turn, allowed
    the Conrads to use areas that FMC controlled (as tenant) as offices.
    Thus, we conclude that the residence expenses are disallowed as
    business-use-of-home expenses under section 280A(c)(1) and Proposed
    Treasury Regulation § 1.280A-2 but are instead deductible as rental
    expenses under section 280A(c)(3) and Proposed Treasury Regulation
    § 1.280A-3. This means that the $104,333 of rental income paid by FMC
    to the Conrads is the correct ceiling for these deductions. See
    § 280A(c)(5); Prop. 
    Treas. Reg. § 1
    .280A-3(d)(2). Therefore, we again
    agree with the IRS’s alternative position on this issue, and we will use
    Proposed Treasury Regulation § 1.280A-3 to calculate the allowed
    deductions for 2009. Dr. Conrad does not dispute that this regulation
    should be used (in the event the house and the condominium are both
    found to be used by the Conrads as rental properties).
    The notice of deficiency did not disallow any of the deductions for
    the residence expenses on the grounds that they were not paid or
    incurred. The IRS does not challenge any of the deductions the Conrads
    claimed for 2009 related to the condominium and the house on the
    grounds that the corresponding expenses were not paid, with the
    exception of the $48,542 deduction for condominium fees claimed on
    Mrs. Conrad’s Schedule C. Therefore, we assume for purposes of this
    Opinion that the Conrads paid the following amounts: $81,889 of
    mortgage interest for the condominium for the first half of 2009; $42,076
    of real estate taxes for the condominium for the first half of 2009; $3,526
    of insurance expenses; $7,510 of utilities expenses; $61,812 of other
    expenses; condominium fees of $24,271, not the reported $48,542; and
    $43,200 for the rent for the house. At trial the IRS did not argue that
    these expenses were not paid or incurred. Therefore, we will use these
    amounts to calculate the Conrads’ allowed deductions.
    On Dr. Conrad’s Form 8829 the Conrads divided the expenses
    related to the condominium and the house evenly between the portions
    of the residences used by FMC and the portions used by them
    personally. 46 The IRS has not argued that we should adjust this
    46 Thus, the Conrads deducted only one-half of the following expenses
    attributable to the condominium and the house on Dr. Conrad’s Form 8829:
    Year         Type of expense     Amount of full      Amount of
    expense        expense deducted
    2008    Mortgage interest             $328,011           $164,006
    74
    [*74] allocation method. Therefore, we will accept the Conrads’ method
    and divide the residence expenses equally between their personal and
    rental activities. See Feigh, 152 T.C. at 277.
    As we did for 2008, we place all of the Conrads’ 2009 expenses
    into the three categories listed in Proposed Treasury Regulation
    § 1.280A-3. First, the Conrads claimed two deductions (mortgage
    interest and real estate taxes) that are deductible whether or not they
    rented portions of the residences to FMC. Half of each expense (i.e., one-
    half of $81,889 of mortgage interest and one-half of $42,076 of real estate
    taxes) is attributable to the rental portion of the Conrads’ condominium,
    for a total of $61,983. See §§ 163(a), (h)(2)(D), 164(a)(1), 280A(b); Prop.
    
    Treas. Reg. § 1
    .280A-3(d)(3)(i). This category is shown in the table as
    “Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(i).” 47
    The second category consists of so-called operating expenses, i.e.,
    the other expenses related to the Conrads’ residences (except for
    depreciation and casualty losses). See Prop. 
    Treas. Reg. § 1
    .280A-
    3(d)(3)(ii). This category includes the current year expenses reported on
    Dr. Conrad’s Form 8829 and Mrs. Conrad’s Schedule C that are
    attributable to the Conrads’ rental activities (utilities, insurance, other
    2009      Mortgage interest                   81,889               40,944
    2009      Real estate taxes                   42,076               21,038
    2009      Insurance, utilities, other         72,848               36,424
    expenses
    The depreciation expenses also were calculated on the basis of half the residence being
    used for nonpersonal purposes.
    However, the Conrads (improperly) deducted 100% of the following expenses
    attributable to the condominium and the house on Mrs. Conrad’s Schedule C:
    Year        Type of expense      Amount of full      Amount of
    expense        expense deducted
    2009      Condominium fees             $48,542             $48,542
    2009      Rent for house                43,200              43,200
    Note that the full expense for condominium fees was not $48,542 as reported,
    but $24,271. Thus, the proper allocation of condominium fees for the nonpersonal
    portion of the condominium using a 50/50 allocation would be $12,136.
    47 The other half of mortgage interest (i.e., $40,945) and the other half of real
    estate taxes (i.e., $21,038) are attributable to the portion of the Conrads’ condominium
    used by the Conrads solely for personal purposes and are itemized deductions for 2009.
    75
    [*75] expenses, condominium fees for the condominium, and rent for the
    house), totaling $70,160. 48 In addition, we concluded supra OPINION,
    Part III.A.5, that the Conrads had $114,520 of operating-expense
    deductions to be carried forward to 2009. The Conrads thus have
    $184,680 of deductions that correspond to the second category of
    Proposed Treasury Regulation § 1.280A-3(d)(3). See Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii). This category is reflected in the final column of the
    table row titled “Deductions under Prop. 
    Treas. Reg. § 1
    .280A-
    3(d)(3)(ii).”
    The third category consists of the Conrads’ depreciation and
    excess casualty loss expenses. The Conrads deducted $72,724 of
    depreciation for 2009. We also concluded supra OPINION, Part III.A.5,
    that the Conrads carry forward $387,391 of depreciation and excess
    casualty loss expenses from 2008. The Conrads thus have $460,115 of
    deductions that correspond to the third category of Proposed Treasury
    Regulation § 1.280A-3(d)(3). See Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii).
    This category is reflected in the final column of the table row titled
    “Deductions under Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii).”
    The next step in the analysis is to apply the ordering rules found
    in Proposed Treasury Regulation § 1.280A-3(d)(3). FMC paid the
    Conrads $104,333 of rental income in 2009. This represents the ceiling
    of allowed deductions. See § 280A(c)(5); Prop. 
    Treas. Reg. § 1
    .280A-
    3(d)(2). We first allow the Conrads to deduct all their Proposed Treasury
    Regulation § 1.280A-3(d)(3)(i) expenses ($61,983). The Conrads earned
    more rental income than they have allowable deductions from this
    category, so they can fully deduct this category of expenses for 2009. See
    Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(i). After doing so, they still have room
    under the gross-income limitation to deduct $42,350 of additional
    expenses (i.e., $104,333 minus $61,983).
    The next category of deductions to consider under Proposed
    Treasury Regulation § 1.280A-3(d)(3) is the second category of
    deductions. Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii). This category includes
    $184,680 of deductions. However, since only $42,350 of rental income
    remains to offset by deductions, only $42,350 of expenses from the
    second category may be deducted for 2009. See 
    id.
     The remaining
    deductions in the category ($142,330) are carried forward to 2010. See
    48 The other half of these expenses (i.e., $70,160) is related to the portions of
    the residences used by the Conrads solely for personal purposes and is therefore
    nondeductible under section 262(a).
    76
    [*76] § 280A(c)(5) (flush language); Prop. 
    Treas. Reg. § 1
    .280A-
    3(d)(3)(ii). This carryforward is reflected in the last column of the table
    row titled “Disallowed Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(ii) deductions
    (carryover to 2010).”
    Because the maximum deduction for the residences for 2009 is
    completely absorbed by the first and second categories, the Conrads
    must carry forward to 2010 all $460,115 of deductions for their
    depreciation and excess casualty loss expenses. See § 280A(c)(5); Prop.
    
    Treas. Reg. § 1
    .280A-3(d)(3)(iii). This carryforward is reflected in the
    last column of the table row titled “Disallowed Prop. 
    Treas. Reg. § 1
    .280A-3(d)(3)(iii) deductions (carryover to 2010).”
    The final step in our analysis is to determine whether any other
    provision of section 280A further limits the Conrads’ deductions.
    Deductions allowed under section 280A(c)(3) are subject to limitation by
    section 280A(c)(6); however, for the reasons discussed supra OPINION,
    Part III.A.5, we conclude that the IRS has waived any argument that
    the Conrads’ deductions are limited by section 280A(c)(6).
    A taxpayer who has expenses attributable to renting out a
    residence may find the deductions attributable to such expenses limited
    by section 280A(e)(1). The IRS does not suggest that this provision limits
    the deductions for the expenses attributable to the Conrads’ rental of
    the condominium and the house to FMC. We therefore need not address
    this potential argument. See Feigh, 152 T.C. at 277.
    We hold that in total there is a deduction of (1) $61,983 of
    mortgage interest and real estate taxes as itemized deductions on the
    Conrads’ Schedule A and (2) $104,333 of the expenses related to the
    rental use of the Conrads’ residences in 2009 as above-the-line
    deductions. 49 There is a carryforward of (1) $142,330 of operating
    49 On their 2009 return the Conrads deducted their residence expenses against
    their professional-services incomes. In our view, the residence expenses are not the
    expenses of either sole proprietorship but rather are the expenses of rent-producing
    property. This raises the question of how much of these residence expenses should be
    deducted in calculating the Conrads’ self-employment tax liabilities.
    Dr. Conrad’s self-employment income is calculated without any deductions for
    the expenses of the residences. As to Mrs. Conrad, however, there is a procedural issue
    resulting from the determination of the notice of deficiency that there should be a
    $3,885 deduction against her sole-proprietorship income for business use of home. The
    IRS has not disavowed this allowance nor argued for an increased deficiency. See
    77
    [*77] expenses and (2) $460,115 of depreciation and excess casualty loss
    expenses to 2010.
    IV.     The interest deduction claimed on Mrs. Conrad’s 2009 Schedule C
    is deductible for FMC, not Mrs. Conrad.
    For 2009 Mrs. Conrad claimed a $7,582 deduction on her
    Schedule C for interest payments related to FMC’s yacht. The notice of
    deficiency disallowed this deduction. In its opening brief, the IRS
    contends that the interest expense is not deductible against Mrs.
    Conrad’s sole-proprietorship income under section 162(a) because it was
    not “paid or incurred in connection with the operation of her . . .
    accounting business.” The Conrads originally deducted the yacht
    interest on Mrs. Conrad’s Schedule C. However, Dr. Conrad has
    conceded in his brief that the Conrads cannot deduct the interest as an
    expense of Mrs. Conrad’s accounting sole proprietorship.
    We have held supra OPINION, Part II.B, that since FMC’s yacht
    was not an entertainment facility during the years at issue, section
    274(a)(1)(B) does not disallow FMC’s nondepreciation deductions with
    respect to its yacht. Furthermore, the fact that the interest expense was
    not an expense of Mrs. Conrad’s accounting business does not preclude
    the interest expense from being a business expense of FMC. Indeed, the
    yacht was bought by FMC for its business, and it was a corporate asset.
    We will therefore determine whether the yacht interest is a deductible
    expense of FMC.
    Section 163(a) allows a taxpayer to deduct all interest paid or
    accrued within the taxable year on indebtedness. As an accrual method
    taxpayer, FMC has a deduction for the interest expense if (1) it was
    legally liable for the corresponding debt related to the yacht and (2) the
    interest expense accrued during 2009. See Hynes v. Commissioner, 
    74 T.C. 1266
    , 1287 (1980) (“It has long been established that for interest to
    be deductible under section 163(a), the interest must be on the
    § 6214(a); Estate of Petschek v. Commissioner, 
    81 T.C. 260
    , 271–72 (1983), aff’d, 
    738 F.2d 67
     (2d Cir. 1984); Koufman v. Commissioner, 
    69 T.C. 473
    , 475–76 (1977). We thus
    hold the IRS to its notice of deficiency position even though it is inconsistent with our
    view that the residence expenses were not the expenses of Mrs. Conrad’s sole
    proprietorship. Therefore, we will allow Mrs. Conrad to deduct $3,885 of the residence
    expenses against her self-employment income. The remaining $100,448 of the rental-
    expense deductions are not deducted against either of the Conrads’ professional-
    services incomes. Both the $3,885 business-use-of-home deduction on Mrs. Conrad’s
    Schedule C and the $100,448 of deductions for the Conrads’ rental expenses are above-
    the-line deductions. See § 62(a)(1), (4).
    78
    [*78] taxpayer’s own indebtedness and not on the indebtedness of
    another.”); Casalina Corp. v. Commissioner, 
    60 T.C. 694
    , 705 (1973)
    (“Interest accrues during the taxable year on a fixed and unconditional
    obligation, and it is deductible as it accrues and not when it is paid if the
    taxpayer is on the accrual basis.”), aff’d per curiam, 
    511 F.2d 1162
     (4th
    Cir. 1975).
    Paragraph 28 of the Supplemental Stipulation establishes that
    an interest expense of $7,582 was paid and that it was related to FMC’s
    yacht. Although this paragraph does not specify who the borrower on
    the yacht loan was, it is more likely than not that FMC, as the yacht’s
    owner, was the borrower. It follows that FMC was liable to make the
    $7,582 interest payment. Although the paragraph does not specify when
    the interest expense accrued, it is more likely than not that it accrued
    when it was paid, during 2009. 50
    Because we conclude that FMC was the borrower on the
    corresponding loan related to its yacht and that the interest expense
    accrued in 2009, FMC is permitted to deduct $7,582 of interest related
    to its yacht in 2009. As 51.25% owners of FMC, the Conrads are entitled
    to include their share of that interest, which amounts to $3,886, as part
    of their deduction for passthrough losses from FMC on their 2009
    Schedule E. 51
    V.     The Conrads’ liability for section 6662 accuracy-related penalties
    for the years at issue
    Finally, we consider whether the Conrads are liable for section
    6662(a) accuracy-related penalties for the years at issue. Section 6662(a)
    imposes a penalty of 20% on the portion of an underpayment of tax that
    is attributable to (1) negligence or disregard of the Code or the
    regulations, (2) a substantial understatement of income tax, or (3) a
    50 Because we find that FMC was liable on the debt and that the debt accrued
    during 2009, we need not determine whether FMC made the interest payment. If one
    or both of the Conrads paid the interest expense on behalf of FMC, the result would be
    either a loan or a contribution of capital by the Conrads to FMC. See Rink v.
    Commissioner, 
    51 T.C. 746
    , 751 (1969). A contribution of capital would increase the
    payor’s corresponding basis in his or her ownership share of FMC. Neither party
    contends that the Conrads made a loan or a contribution of capital to FMC. Thus, we
    will not address any basis adjustment here.
    51 Because the $7,582 of interest expense is not an expense of Mrs. Conrad’s
    sole proprietorship, and thus should not have been claimed as a deduction on her
    Schedule C, her self-employment income for 2009 was underreported by $7,582.
    79
    [*79] substantial valuation misstatement. § 6662(b)(1), (2), and (3). The
    notice of deficiency determined that the Conrads are liable for section
    6662 penalties on the grounds that their underpayments of tax for the
    years at issue are attributable to (1) negligence and disregard of the
    Code and regulations, (2) substantial understatements of income tax, or
    (3) substantial valuation misstatements. That the underpayments were
    attributable to substantial valuation misstatements was a position
    abandoned by the IRS on brief. Therefore, we decline to consider it. See
    Amazon.com, Inc., 148 T.C. at 220.
    A substantial understatement of income tax exists “if the amount
    of the understatement for the taxable year exceeds the greater of . . .
    10% of the tax required to be shown on the return for the taxable year,
    or . . . $5,000.” § 6662(d)(1). Thus, there is a substantial understatement
    if (i) the amount of the understatement is greater than 10% of the tax
    required to be shown on the return and (ii) the 10% amount is greater
    than $5,000. An understatement is the “amount of the tax required to
    be shown on the return for the taxable year” minus “the amount of the
    tax imposed which is shown on the return.” § 6662(d)(2)(A).
    Section 6662(d)(2)(B) provides that the amount of the
    understatement is reduced by the portion attributable to (1) the tax
    treatment of any item by the taxpayer for which there is or was
    substantial authority or (2) an item for which (a) the facts affecting the
    item’s tax treatment are disclosed on the return and (b) there is a
    reasonable basis for the tax treatment of the item by the taxpayer. The
    Conrads do not argue there should be a reduction under section
    6662(d)(2)(B), and we therefore need not consider it here. See Feigh, 152
    T.C. at 277.
    The section 6662(a) penalty is not imposed with respect to any
    portion of an underpayment if it is shown that there was a reasonable
    cause for that portion and that the taxpayer acted in good faith with
    respect to that portion. § 6664(c)(1). This exception is sometimes
    referred to as a “defense.” The relevant regulations provide that
    “whether a taxpayer acted with reasonable cause and in good faith is
    [determined] on a case-by-case basis, taking into account all pertinent
    facts and circumstances.” 
    Treas. Reg. § 1.6664-4
    (b)(1). “Generally, the
    most important factor is the extent of the taxpayer’s effort to assess the
    taxpayer’s proper tax liability.” 
    Id.
     “Circumstances that may indicate
    reasonable cause and good faith include an honest misunderstanding of
    fact or law that is reasonable in light of all of the facts and
    80
    [*80] circumstances, including             the    experience,      knowledge,       and
    education of the taxpayer.” 
    Id.
    Section 6751(b)(1) provides that “[n]o penalty under this title
    shall be assessed unless the initial determination of such assessment is
    personally approved (in writing) by the immediate supervisor of the
    individual making such determination or such higher-level official as
    the Secretary may designate.” This Court has held that the person
    making the initial determination to impose the penalty must obtain
    written supervisory approval for penalties before the first formal
    communication of penalties to the taxpayer. Clay v. Commissioner, 
    152 T.C. 223
    , 249 (2019), aff’d, 
    990 F.3d 1296
     (11th Cir. 2021). 52
    A.      The IRS bears the burden of production, and Dr. Conrad
    bears the burden of persuasion.
    The burden of proof consists of two components: the burden of
    production and the burden of persuasion. Schaffer ex rel. Schaffer v.
    Weast, 
    546 U.S. 49
    , 56 (2005). Taxpayers generally bear the burdens of
    production and persuasion, see Rule 142(a)(1), but the IRS bears the
    burden of production with respect to an individual taxpayer’s liability
    for penalties, § 7491(c). To satisfy this burden, the IRS “must present
    sufficient evidence to show that it is appropriate to impose the penalty
    in the absence of available defenses.” Graev v. Commissioner, 
    149 T.C. 485
    , 493 (2017), supplementing and overruling in part 
    147 T.C. 460
    (2016); Higbee v. Commissioner, 
    116 T.C. 438
    , 446 (2001). As part of its
    52 We note that several circuits apply a different test for determining whether
    the IRS satisfies section 6751(b)(1). See Minemyer v. Commissioner, No. 21-9006, 
    2023 WL 314832
    , at *5 (10th Cir. Jan. 19, 2023) (“[T]he requirements of [section] 6751(b)(1)
    are met so long as written supervisory approval of an initial determination of an
    assessment is obtained on or before the date the IRS issues a notice of deficiency.”),
    aff’g in part, rev’g in part and remanding 
    T.C. Memo. 2020-99
    ; Kroner v. Commissioner,
    
    48 F.4th 1272
    , 1276, 1279 n.1 (11th Cir. 2022) (stating that “the IRS satisfies Section
    6751(b) so long as a supervisor approves an initial determination of a penalty
    assessment before it assesses those penalties” but leaving unaddressed whether a
    timing requirement arises from the statute’s use of the word “approve” because a
    supervisor cannot “approve” something after losing the discretion to approve it), rev’g
    in part 
    T.C. Memo. 2020-73
    ; Laidlaw’s Harley Davidson Sales, Inc. v. Commissioner,
    
    29 F.4th 1066
    , 1071, 1074 (9th Cir. 2022) (stating that the IRS satisfies section
    6751(b)(1) for “assessable penalties” (which are not subject to deficiency procedures) if
    the supervisor’s approval is secured before the IRS assesses the penalty or “before the
    relevant supervisor loses discretion whether to approve the penalty assessment”), rev’g
    and remanding 
    154 T.C. 68
     (2020). The D.C. Circuit, the court to which an appeal of
    this case would presumably lie, see supra note 3, has not squarely addressed the proper
    test under section 6751(b)(1). Therefore, we will apply our precedent on this issue.
    81
    [*81] burden of production, the IRS must produce evidence that it
    complied with the requirements of section 6751(b)(1). Graev, 149 T.C.
    at 492–93.
    As part of their burden of persuasion, taxpayers must prove they
    had reasonable cause for and acted in good faith with respect to the
    relevant portion of the underpayment. See Higbee, 116 T.C. at 446–47.
    B.     The requirements of section 6751(b)(1) are met for a
    substantial understatement but not for negligence.
    We hold that there was supervisory approval for penalties for
    substantial understatements but not for negligence.
    1.     Substantial Understatement
    The Civil Penalty Approval Form was completed by Finney on
    April 12, 2011. On the first page of the Civil Penalty Approval Form a
    blank box underneath the heading is labeled “Reason(s) for Assertion of
    Penalty(s) IRM 4.10.6.7(1).” Finney wrote, in part, in the blank box: “The
    understatement of the tax is greater than $5,000.00.” The second page
    contained a table asking Finney to mark “Yes” or “No” for various
    penalties identified by preprinted descriptions in the “Penalty” column
    and by preprinted Code sections in the “IRC” column. Finney marked
    “Yes” for the penalty identified as “Substantial Understatement” in the
    “Penalty” column and “6662(d)” in the “IRC” column. From this we
    conclude that Finney determined that the Conrads were liable for a
    penalty for a substantial understatement for each year at issue.
    The Civil Penalty Approval Form was signed by Marlow on July
    18, 2011, nearly a year and a half before the notice of deficiency was
    issued to the Conrads on January 8, 2013. Marlow credibly testified that
    she was Finney’s group manager while Finney conducted his review of
    the Conrads’ 2008 and 2009 returns. We conclude that Marlow was
    Finney’s immediate supervisor when he completed the Civil Penalty
    Approval Form and when Marlow signed it. Marlow credibly testified
    that she sent the Conrads an “initial report” with the Civil Penalty
    Approval Form attached. Although this “initial report” is not in the
    record, her use of the words “initial report” indicates that the report was
    the first formal communication with the Conrads about penalties.
    Because the signed Civil Penalty Approval Form was attached to the
    report, this communication must have been made on or after July 18,
    2011.
    82
    [*82] Dr. Conrad has not claimed that the IRS formally communicated
    its initial penalty determination to the Conrads before July 18, 2011,
    nor does the record support such a claim. See Frost v. Commissioner, 
    154 T.C. 23
    , 34 (2020) (stating that once we conclude that “[the IRS’s]
    evidence [shows] that a penalty was approved before a formal
    communication of the penalty to [the taxpayer,] . . . the burden shifts to
    [the taxpayer] to introduce contrary evidence”). Accordingly, we find
    that Marlow’s approval of penalties for substantial understatements
    occurred before the Conrads received formal communication about the
    penalty. We thus hold that the IRS complied with the requirements of
    section 6751(b)(1) for penalties for substantial understatements. See
    Clay, 152 T.C. at 249.
    Our findings supporting this holding are made on a
    preponderance of evidence. A fortiori the IRS has met its burden of
    production. A fortiori Dr. Conrad has not met his burden of persuasion.
    2.     Negligence
    On the first page of the Civil Penalty Approval Form, Finney
    wrote, in part, that “[t]axpayers failed to exercise ordinary and
    necessary care in the preparation of the return.” This sentence might be
    read to suggest that he determined penalties for underpayments due to
    negligence. See 
    Treas. Reg. § 1.6662-3
    (b)(1) (defining negligence to
    include any failure to exercise ordinary and reasonable care in the
    preparation of a tax return). However, on the second page of the Civil
    Penalty Approval Form, Finney marked the “No” box in the “Assert
    Penalty” column for the penalty identified as “Negligence” in the
    “Penalty” column and “6662(c)” in the “IRC” column.
    We find Finney’s responses on the second page of the Civil
    Penalty Approval Form dispositive of which penalties he initially
    determined. The second page of the Civil Penalty Approval Form asked
    Finney to select penalties to be imposed as identified by Code section in
    the “IRC” column. He chose to mark “No” for the penalty for negligence
    under section 6662(c). By contrast, Finney’s response on the first page
    of the Civil Penalty Approval Form is a narrative description of his
    reasons for imposing the penalty. These comments on the first page of
    the form do not correspond to the text of the respective Code provisions
    imposing the penalty components, and he does not reference any Code
    sections on the first page of the form. Because Finney’s response on the
    second page of the Civil Penalty Approval Form referenced specific Code
    sections as well as the text of the Code sections (i.e., “negligence”), we
    83
    [*83] find that Finney did not make an initial determination to assess
    penalties against the Conrads for underpayments due to negligence. See
    Belair Woods, LLC v. Commissioner, 
    154 T.C. 1
    , 5–6 (2020) (concluding
    supervisory approval was given only for the three penalty components
    that were checked “Yes” on the Civil Penalty Approval Form); Estate of
    Ronning v. Commissioner, 
    T.C. Memo. 2019-38
    , at *12–13, *45–46
    (concluding that supervisory approval was not given for a penalty for
    substantial understatement when the Civil Penalty Approval Form had
    been checked “Yes” for negligence and “No” for the other penalties listed
    on the form), aff’d, 
    830 F. App’x 279
     (11th Cir. 2020). It follows that
    Marlow’s signature on the Civil Penalty Approval Form did not approve
    a determination that the Conrads were liable for a penalty for
    negligence.
    On or after July 18, 2011, the IRS mailed the Conrads an “initial
    report” (which is not in the record) that was accompanied by the Civil
    Penalty Approval Form. On January 8, 2013, the IRS mailed a notice of
    deficiency to the Conrads stating that their underpayments for 2008 and
    2009 were due to substantial understatements of income tax,
    substantial valuation misstatements, or negligence. The IRS does not
    argue that either the “initial report” or the notice of deficiency
    represented an approval (initial or otherwise) of the imposition of the
    negligence components of the accuracy-related penalties. Instead, the
    IRS contends that it was the Civil Penalty Approval Form that
    represented the initial determination (by Finney) and approval (by
    Marlow) of the negligence components of the accuracy-related penalties.
    Recall that the notice of deficiency named Tate as the person to
    contact and was signed by (Appeals Team Manager) Redstone. We
    surmise that Tate and Redstone were employees of the IRS Appeals
    Division. One might speculate that Redstone or Tate or someone else at
    Appeals might have initially determined that the Conrads were liable
    for the negligence component. But it is more likely that Appeals (like
    IRS counsel in this litigation) believed that Finney and Marlow had
    already initially determined and approved the negligence components
    by way of the Civil Penalty Approval Form.
    We hold that the supervisory-approval requirement of section
    6751(b)(1) was not met for the negligence components. Our findings
    underlying this holding are made on a preponderance of evidence. A
    fortiori the IRS has not met its burden of production. Dr. Conrad would
    have met his burden of persuasion.
    84
    [*84] C.     The Conrads are liable for penalties for substantial
    understatements if the parties’ Rule 155 computations show
    that the Conrads substantially understated their tax
    liabilities for 2008 and 2009 (but no penalty is imposed on
    the portions of the underpayments attributable to the
    deductions claimed for depreciation of the yacht and the
    airplane because these portions are attributable to
    reasonable cause and good faith).
    We must next determine whether the Conrads are liable for
    penalties for substantial understatements of income tax. The amounts
    of the understatements will depend on the computations of the Conrads’
    2008 and 2009 tax liabilities considering (1) the Stipulation of Facts,
    (2) the Supplemental Stipulation, and (3) the holdings reached in this
    Opinion. In this Opinion, we have denied deductions for (1) depreciation
    of FMC’s yacht, (2) depreciation of FMC’s airplane, and (3) interest
    expenses related to FMC’s yacht on Mrs. Conrad’s 2009 Schedule C.
    However, we have allowed deductions from the Conrads’ gross income
    for (1) an amount equal to their passthrough share of FMC’s deductions
    for storage, maintenance, and upkeep expenses with respect to its yacht,
    (2) an amount equal to their passthrough share of FMC’s deductions for
    storage, maintenance, and upkeep expenses and Dr. Conrad’s flying
    lessons with respect to its airplane, (3) expenses related to the rental
    use of their homes, including a portion of those originally reported on
    the Schedule C for Mrs. Conrad’s accounting business, within the limit
    allowed under section 280A(c)(5), and (4) an amount equal to their
    passthrough share of FMC’s deduction for interest expense related to its
    yacht. The parties’ stipulations and our holdings, therefore, necessitate
    computations to determine the amounts of tax imposed for the years at
    issue, which we leave to the parties under Rule 155. The IRS will have
    met its burden of production if the Rule 155 computations show that the
    Conrads had substantial understatements of income tax for 2008 and
    2009.
    Finally, we must consider whether the Conrads have proven that
    they had reasonable cause and that they acted in good faith for any
    portion of their underpayments. We concluded that FMC attempted to
    use the airplane in its business, that it earned some revenue from
    renting the airplane to third parties, and that the nondepreciation
    expenses related to the airplane were deductible. However, we also
    concluded that FMC could not deduct any depreciation related to the
    airplane because it failed to place the airplane in service for its
    specifically assigned function. Although we ruled against the Conrads
    85
    [*85] on the airplane depreciation issue, we believe that a reasonable
    taxpayer in FMC’s and the Conrads’ positions could struggle to
    understand that trying to use the airplane in FMC’s business while also
    renting the airplane to third parties did not constitute placing the
    airplane in service for its specifically assigned function. We conclude
    that FMC’s and the Conrads’ error on this issue qualifies as “an honest
    misunderstanding of . . . law.” 
    Treas. Reg. § 1.6664-4
    (b)(1). Therefore,
    we hold that the Conrads have reasonable cause for and acted in good
    faith with respect to the portions of the underpayments attributable to
    FMC’s depreciation deductions for its airplane.
    We also conclude that the Conrads had reasonable cause and
    acted in good faith relating to FMC’s yacht depreciation deductions.
    Although Dr. Conrad conceded the depreciation deductions in his brief,
    we allowed FMC to deduct the nondepreciation expenses with respect to
    the yacht. Furthermore, Dr. Conrad credibly testified that he believed
    FMC could deduct the depreciation because (1) the yacht was a business
    asset of FMC when it was used for the 2003 trip and (2) FMC had tried,
    but failed, to find a purchaser for the yacht. We conclude that there was
    “an honest misunderstanding of . . . law.” 
    Treas. Reg. § 1.6664-4
    (b)(1).
    Therefore, we hold that the Conrads had reasonable cause for and acted
    in good faith with respect to the portions of the underpayments
    attributable to FMC’s depreciation deductions for its yacht.
    However, we conclude that the Conrads failed to prove that they
    had reasonable cause and failed to show they acted in good faith for all
    the other portions of the underpayments for 2008 and 2009. As to the
    Conrads’ reporting of the residence deductions, which the Conrads did
    not concede, we observe several indicators of bad faith on the Conrads’
    part. First, the Conrads overreported their mortgage interest expenses
    by $52,551 for 2008 and $40,944 for 2009. Second, the Conrads reported
    $48,542 of condominium fees for 2009 when in fact they paid only
    $24,271. Lastly, the Conrads attempted to conceal the true nature of the
    expenses by reporting deductions on Dr. Conrad’s Schedule C and Mrs.
    Conrad’s Schedule C. The portions of the underpayments related to the
    residence deductions were not due to reasonable cause or good faith.
    As explained supra note 4, the Conrads conceded several issues
    before trial. One concession was for an IRA distribution for Dr. Conrad
    during 2008. Dr. Conrad testified that he failed to report this
    distribution because of a “mistake” in his understanding of the law.
    However, Dr. Conrad did not argue in his brief that he had reasonable
    cause for failing to report his IRA distribution. We thus conclude that
    86
    [*86] he has waived this argument. See Amazon.com, Inc., 148 T.C.
    at 220. Dr. Conrad does not argue that he had reasonable cause for the
    other issues for which he made pre-trial concessions. We therefore
    conclude that the Conrads did not prove that they had reasonable cause
    or that they acted in good faith in regard to the portions of their
    underpayments related to the issues that they conceded before trial.
    Taking into consideration all the facts and circumstances, we hold
    that the Conrads have not shown that they had reasonable cause or that
    they acted in good faith except for the portions of the underpayments
    attributable to FMC’s deductions for depreciation of its airplane and its
    yacht. Therefore, if revised computations under Rule 155 show
    substantial understatements of income tax because of the
    understatements caused by the residence expenses and the yacht
    interest deducted by the Conrads and the unreported income they
    conceded before trial, the Conrads are liable for accuracy-related
    penalties under section 6662(a) for the tax years at issue.
    In reaching our holdings herein, we have considered all
    arguments made, and, to the extent not mentioned above, we find them
    to be moot, irrelevant, or without merit.
    To reflect the foregoing,
    Decision will be entered under Rule 155 with respect to Thomas D.
    Conrad, and an appropriate order and decision will be entered with
    respect to Margaret Joan Conrad.