Michael J. Rogerson ( 2022 )


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  •                 United States Tax Court
    
    T.C. Memo. 2022-49
    MICHAEL J. ROGERSON,
    Petitioner
    v.
    COMMISSIONER OF INTERNAL REVENUE,
    Respondent
    —————
    Docket No. 5848-20.                                 Filed May 12, 2022.
    —————
    Between 2005 and 2013, P was the president and
    100% owner of S1, an S corporation engaged (directly or
    through wholly owned entities) in manufacturing aircraft
    parts and components (aerospace business). S1 and its
    wholly owned entities had multiple product lines, some of
    which involved digital products and some of which involved
    analog products.
    In 2014, P began reorganizing the aerospace
    business to separate the digital products, analog products,
    and corporate functions. Following the reorganization, P
    owned the business directly through three S corporations:
    S1 (digital products), S2 (analog products), and S3
    (corporate functions), each of which filed its own tax
    return.
    In addition to the aerospace business, P owned two
    yachts that he intended to charter. However, P did not
    charter the yachts during the years at issue.
    Each year, from at least 2005 to 2013, S1 filed Form
    1120S, U.S. Income Tax Return for an S Corporation,
    reflecting all the results of the aerospace business that it
    and its wholly owned entities conducted. For these years,
    S1’s returns did not separate out the various activities of
    Served 05/12/22
    2
    [*2]   the aerospace business for purposes of the rules under
    I.R.C. § 469.
    On his personal income tax returns for 2005 to 2013,
    P reported his involvement in S1’s overall aerospace
    business as nonpassive for purposes of I.R.C. § 469. But on
    his 2014, 2015, and 2016 tax returns, P reported his
    involvement in S2 as passive and his involvement in the
    remaining portion of the aerospace business (in S1 for 2014
    and in S1 and S3 for 2015 and 2016) as nonpassive. He
    also reported his involvement in his yacht activities as
    nonpassive for 2014, 2015, and 2016.
    R issued a notice of deficiency for tax years 2014,
    2015, and 2016, determining among other things that P
    materially participated in S2 and therefore was required to
    treat income from S2 as nonpassive for the years at issue.
    The notice further determined that P’s yacht activities
    were passive rental activities and that P was liable for
    accuracy-related penalties under I.R.C. § 6662(a).
    P challenges R’s notice, arguing among other things
    that (1) P did not materially participate in S2 during the
    years at issue, (2) R’s reliance on the test for material
    participation set out in Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5)
    is a new matter not pleaded by R, (3) Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5) is procedurally and substantively invalid,
    (4) P’s yacht activities qualify as nonpassive based on the
    rental exceptions of Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(ii),
    and (5) the accuracy-related penalties should not apply
    because P had reasonable cause and acted in good faith
    with respect to any underpayment.
    Held: Under Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5) and
    
    Treas. Reg. § 1.469-5
    (j)(1), P materially participated in S2
    during 2014, 2015, and 2016 because he materially
    participated in S1’s overall business of manufacturing
    aircraft parts and components for at least five of the ten
    immediately preceding years.
    Held, further, P’s contention that R’s reliance on
    Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5) is a new matter not
    pleaded by R is rejected.
    3
    [*3]          Held, further, P’s arguments regarding the
    substantive validity of Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5)
    fail because the regulation is not contrary to I.R.C. § 469.
    Held, further, we need not address P’s argument
    that Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5) is procedurally
    invalid because, even assuming for the sake of argument
    that P’s argument is correct, P would not prevail under the
    text of I.R.C. § 469.
    Held, further, P’s yacht activities are rental
    activities that do not qualify for the exceptions described in
    Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(ii).
    Held, further, the accuracy-related penalties under
    I.R.C. § 6662(a) do not apply because P had reasonable
    cause and acted in good faith with respect to his
    underpayments of tax.
    —————
    Steven R. Mather, for petitioner.
    Monica D. Polo and Samuel M. Warren, for respondent.
    MEMORANDUM FINDINGS OF FACT AND OPINION
    TORO, Judge: This deficiency case calls on us to apply the
    passive activity loss rules of section 469. 1 Enacted by Congress as part
    of the Tax Reform Act of 1986, Pub. L. No. 99-514, § 501(a), 
    100 Stat. 2085
    , 2233, the rules limit a taxpayer’s use of losses generated by
    passive activities to offset unrelated income generated by nonpassive
    activities.
    Petitioner Michael Rogerson is a successful entrepreneur.
    A patent holder and certified commercial pilot, Mr. Rogerson has owned
    and led an eponymous group of companies in the aerospace industry
    1 Unless otherwise indicated, all statutory references are to the Internal
    Revenue Code, Title 26 U.S.C. (I.R.C. or Code), in effect at all relevant times, all
    regulation references are to the Code of Federal Regulations, Title 26 (Treas. Reg.), in
    effect at all relevant times, and all Rule references are to the Tax Court Rules of
    Practice and Procedure. We round all monetary amounts to the nearest dollar.
    4
    [*4] since the late 1970s. Also a sailing and boating enthusiast, during
    the tax years 2014, 2015, and 2016, Mr. Rogerson owned two yachts that
    he intended to charter.
    The issues for our decision relate to the federal income tax
    consequences of Mr. Rogerson’s participation in these two endeavors.
    Specifically, we must decide three questions: (1) whether, for the tax
    years 2014, 2015, and 2016, Mr. Rogerson materially participated in
    certain of his aerospace activities, with the result that income from those
    activities must be treated as nonpassive (we conclude he did);
    (2) whether Mr. Rogerson’s yacht activities during the same years were
    per se passive as rental activities (we conclude they were); and
    (3) whether Mr. Rogerson is liable for accuracy-related penalties on the
    underpayments of tax resulting from our first two holdings (we conclude
    he is not).
    As we explain in greater detail below, in light of the answers to
    the first two questions, Mr. Rogerson may not offset losses resulting
    from his passive yacht activities against income from his nonpassive
    aerospace activities. He is not liable for the accuracy-related penalties
    the Commissioner determined, however, because Mr. Rogerson had
    reasonable cause and relied in good faith on his certified public
    accountant in connection with the preparation of the returns at issue.
    FINDINGS OF FACT
    The parties have filed First and Second Stipulations of Fact, both
    with attached exhibits, and a Stipulation of Settled Issues, all of which
    are incorporated by this reference. Trial of this case was held remotely
    on May 5 and 6, 2021. Mr. Rogerson resided in Nevada when he filed
    his petition.
    I.    Aerospace Activities
    A.     Establishment of the Rogerson Companies
    In the late 1970s, Mr. Rogerson had a summer job in the
    aerospace industry. When an acquaintance called to ask for help finding
    a new part, Mr. Rogerson decided that he would build the part himself.
    He engaged an engineer to design the part and a manufacturer to build
    it, and soon established his first company: Rogerson Aircraft Controls,
    Inc. The company manufactured electromechanical products and
    eventually changed its name to Rogerson Aircraft Corporation (RAC),
    which still operates today.
    5
    [*5] Over the next 40 years, Mr. Rogerson grew his business by
    acquiring and developing new product lines, all of which were held
    directly or indirectly by RAC. Business operations were located in
    California, in Irvine and Pasadena. Mr. Rogerson served as the chief
    executive officer of RAC and its subsidiaries at all times, personally held
    patents used in certain product lines, and obtained his commercial
    pilot’s license to better understand the industry. By the end of 2013, the
    Rogerson companies included the following units, which Mr. Rogerson
    referred to as “brands”:
    Location of                   Owned Since
    Name of Unit     Product Line                   Product Type
    Operations                   at Least 2005?
    Rogerson
    Aircraft        Controls
    Irvine        Analog            Yes
    Controls        systems
    (Controls)
    Rogerson
    Aircraft        Lavatory
    Irvine        Analog            Yes
    Systems         systems
    (Systems)
    Auxiliary fuel
    Rogerson ATS                        Irvine        Analog            Yes
    systems
    Kratos
    Pressure        Pressure
    Irvine        Analog            Yes
    Products         gauges
    (Pressure)
    Kratos           Analog
    Pasadena        Analog            Yes
    Instruments      instruments
    Rogerson        Digital flat
    Pasadena        Digital           Yes
    Kratos        panel displays
    Passenger
    InTheAirNet
    entertainment      Irvine        Digital           Yes
    (ITAN)
    systems
    B.       2014 Reorganization
    By 2014, Mr. Rogerson was making an effort to separate the
    Rogerson companies’ product lines based on whether they included
    legacy analog products or contemporary digital products. With the
    exception of analog instruments made by Kratos Instruments, the
    analog product lines were located together at RAC’s facilities in Irvine.
    6
    [*6] During 2014, Mr. Rogerson gave further consideration to the
    organization of the Rogerson companies. In his view, the digital
    products of Rogerson Kratos were different from the analog products
    made by Kratos Instruments. Additionally, Mr. Rogerson had spoken
    with attorneys about estate planning and thought that “there was really
    no way the businesses would keep operating . . . after [his] demise.”
    Accordingly, Mr. Rogerson wanted to reorganize the Rogerson
    companies.
    In 2014, Mr. Rogerson decided that Kratos Instruments’
    operations should be moved from Pasadena to Irvine. He further
    decided to reorganize the Rogerson companies’ legal structure: While all
    product lines had previously been owned directly or indirectly by RAC,
    Mr. Rogerson determined that the digital and the analog product lines
    would be divided and held (directly or indirectly) by two separate legal
    entities, each of which Mr. Rogerson would own directly.
    Mr. Rogerson’s plans were implemented in 2014 and 2015. First,
    RAC transferred all its interests in the analog product lines (including
    interests in legal entities that manufactured analog products) to
    Rogerson ATS, a corporation wholly owned by RAC, effective January 1,
    2014. 2 RAC then transferred 100% of the stock of Rogerson ATS to
    Mr. Rogerson, also effective January 1, 2014. Kratos Instruments’
    employees, inventory, and equipment were physically moved from
    Pasadena to Irvine during the second half of 2014, and the move was
    nearly complete by January 2015. Rogerson ATS changed its name to
    Rogerson Aircraft Equipment Group (RAEG), effective November 5,
    2014.    Finally, effective January 1, 2015, RAC transferred to
    Mr. Rogerson 100% of the stock of Rogerson Corporation (RC), a
    management company that provided services to the other Rogerson
    companies. 3
    After the 2014 reorganization was completed, Mr. Rogerson held
    his aerospace business through three corporations: RAC, RAEG, and
    RC. RAC (directly or indirectly) owned Rogerson Kratos and ITAN and
    was primarily engaged in manufacturing and selling digital products.
    2 Rogerson ATS’s own business making auxiliary fuel systems had dwindled to
    almost nothing by the time of the transfer, because newer aircraft generally do not
    require such systems.
    3 RC changed its name to Rogerson Capital in 2016. Additionally, certain steps
    of the reorganization not relevant to our analysis have been omitted from the summary
    above.
    7
    [*7] RAEG (directly or indirectly) owned Controls, Systems, Pressure,
    and Kratos Instruments and was engaged in manufacturing and selling
    analog products. 4 RC employed the executive team and provided
    finance, legal, human resources, sales, and other support to RAC and
    RAEG.
    C.      Management of RAEG
    Before and after the 2014 reorganization, the operations of
    RAEG’s business units remained generally the same. With the
    exception of the physical relocation of Kratos Instruments to Irvine, the
    units manufactured the same products in the same locations and sold
    those products to the same customers. Indeed, at least some major
    customers were unaware of the reorganization as late as 2016. A small
    number of employees who declined to move with Kratos Instruments to
    Irvine were terminated, but otherwise staffing generally remained the
    same. And Mr. Rogerson continued to oversee the business as a whole.
    Mr. Rogerson remained the CEO of RAC, RAEG, and RC from the
    time of their incorporation through the years at issue. While other
    company employees, including a small number of executives, ran the
    day-to-day operations of each corporation, Mr. Rogerson was actively
    engaged with them all, including RAEG, in particular by monitoring
    operations and production, communicating with management on
    employment issues, and taking a hands-on approach to sales and
    customer relations.
    With respect to RAEG specifically, Mr. Rogerson received regular
    reports on the company’s results, attended meetings to discuss the
    results, and took action when they fell below expectations. 5 He ordered
    the Kratos Instruments move from Pasadena to Irvine and oversaw its
    progress, including setting the timeline, making decisions with respect
    to staffing matters, and deciding on the wording of materials explaining
    the move to employees and customers. As one company executive put it
    4The parties stipulated that RAEG reported ITAN’s activity on its tax returns
    during the years at issue, but other evidence confirms that ITAN was owned by RAC
    rather than RAEG for 2014, 2015, and 2016. We are not obliged to accept a stipulation
    between the parties when it is clearly contrary to facts disclosed by the record. Cal-
    Maine Foods, Inc. v. Commissioner, 
    93 T.C. 181
    , 195 (1989). And, in any event, the
    question of ITAN’s ownership is not dispositive to the outcome of this case.
    5 On more than one occasion during the years at issue, RAEG executives stated
    that Mr. Rogerson’s direct involvement, whether in the form of “ongoing and specific
    directives,” “edict[s],” or other directions, would be required to complete an initiative.
    8
    [*8] when discussing the phrasing of an employee offer letter: “Michael
    gets the last word.” Mr. Rogerson directed executives as to which
    engineers within the Rogerson companies could work on Kratos
    Instruments projects. He approved capital expenditures and provided
    input on accounting issues. He also was involved in the refurbishment
    of the Irvine facilities to accommodate the Kratos Instruments move.
    On employment matters, Mr. Rogerson hired and fired
    executives, set department budgets, and weighed in on staffing at all
    levels of the company. During the years at issue, he was asked to
    approve all bonuses and even an hourly rate increase of $0.50.
    Generally, not even the president of RAEG was authorized to increase
    salaries or provide bonuses to RAEG employees—those decisions were
    made by Mr. Rogerson.
    Consistent with his authority over staffing matters, Mr. Rogerson
    knew employees by their first names, communicated with them directly,
    and weighed in on how and when they should be replaced. When one
    employee was out on medical leave, Mr. Rogerson directed that his
    replacement should be hired from outside the company rather than
    promoted from within, citing “mid management depth” that was “too
    thin.” Mr. Rogerson alerted executives when he felt certain employees
    were not pulling their weight, noting in one instance that an engineer
    “did not carry his own load during the [Kratos Instruments] move” and
    that Mr. Rogerson “[did not] see rewarding him by having [another
    engineer] doing his job now.”
    During this period, Mr. Rogerson was perhaps most extensively
    involved in sales and customer relations. On multiple occasions, he
    personally met with RAEG customers and potential customers and
    participated in customer negotiations. He traveled to visit customers,
    including internationally, and also hosted customers at RAEG’s offices. 6
    He drafted press releases, received reports on customer visits that he
    did not attend, and got personally involved when disputes with
    customers arose. More than once, Mr. Rogerson told RAEG executives
    that he would resolve a problem by meeting personally with the
    customer involved. And customers sometimes reached out directly to
    Mr. Rogerson with complaints. His approval was required for any bid
    6 At least one trip during the years at issue was to an RAEG customer in
    Indonesia.
    9
    [*9] provided to a customer with an aggregate value over $100,000; in
    one month in 2016, that approval was requested at least a dozen times.
    As part of his activities, Mr. Rogerson discussed RAEG with
    company executives, both in person and on the phone. During the years
    at issue, he communicated with RC and RAEG executives regarding
    RAEG’s finances, its operations, the Kratos Instruments move, and the
    potential sale of the company. The RAEG president and the Rogerson
    companies’ chief financial officer, together or separately, spent at least
    10 to 15 hours per month with Mr. Rogerson on RAEG financial and
    operational matters. Mr. Rogerson also communicated with those
    individuals and others via email, including on weekends and holidays.
    In short, Mr. Rogerson was an actively engaged CEO throughout
    the years at issue. And his level of involvement in RAEG in particular
    and in the Rogerson companies more generally during those years was
    substantially the same as it was during the years preceding the 2014
    reorganization.
    II.    Mr. Rogerson’s Yachts
    In addition to being interested in aviation, Mr. Rogerson was a
    sailing enthusiast from an early age. He eventually developed an
    interest in powerboats, and during the years at issue he owned two
    yachts—the TOTO and the Falcon Lair—that he intended to make
    available for charter.
    A.      The TOTO
    Mr. Rogerson purchased the TOTO, a 1983 Palmer Johnson 110-
    foot cutter, in or around 1999. 7 In 2014, 2015, and 2016, Mr. Rogerson
    kept the TOTO at a marina in Fort Lauderdale, Florida. Insurance
    policies that covered the TOTO for the period May 22, 2015, to May 22,
    2017, permitted charters for a maximum of 12 weeks each year. 8 The
    TOTO was not commercially registered from 2014 to 2016 and was not
    available for charter during those years.
    7 Mr. Rogerson owned the TOTO through a limited liability company named
    Toto, LLC.
    8 The policies defined a charter agreement as a “written contract between the
    owner of the insured yacht and the charterer in which the insured yacht is rented for
    one or more voyages or a fixed period of time.”
    10
    [*10] The TOTO was managed by a four-person crew, including a
    captain, a deckhand, a stewardess, and an individual that would help
    with the engine room and serve as a deckhand when needed. Because
    the TOTO was not chartered, the crew did not provide services to any
    customers during 2014, 2015, and 2016. For at least a portion of those
    years, the TOTO was in a shipyard for repairs.
    B.      The Falcon Lair
    In 2014, Mr. Rogerson purchased the Falcon Lair, a 225-foot
    vessel built in 1983. 9 The yacht underwent a major refit during 2014
    and early 2015 before being relaunched during the summer of 2015.
    During 2014, 2015, and 2016, the Falcon Lair was held at various
    marinas in Europe. Insurance policies covering the Falcon Lair for the
    periods May 27, 2014, to May 27, 2015, and July 15, 2016, to July 14,
    2017, prohibited charters unless approved by the insurer in advance in
    writing, or else prohibited charters outright. 10
    Like the TOTO, the Falcon Lair was not commercially registered
    during 2014, 2015, and 2016, nor was it chartered. Nevertheless,
    Mr. Rogerson engaged a management company to manage the Falcon
    Lair. The management company was responsible for arranging the
    Falcon Lair’s trips from harbor to harbor, including by provisioning the
    yacht with fuel and food.
    The Falcon Lair initially was operated by a 12-person crew, but
    that number dropped to 8 or 9 while the yacht was in the shipyard for
    refurbishment. Because the Falcon Lair was not chartered, the crew did
    not provide services to any customers during 2014, 2015, and 2016.
    When the Falcon Lair was not in the shipyard for repairs or
    9Mr. Rogerson established two limited liability companies to manage and hold
    the Falcon Lair: Platinum Marine Ventures, LLC (Platinum), and Sterling Marine
    Ventures, LLC (Sterling). Platinum generally paid the Falcon Lair’s operating
    expenses, including the costs of crew, fuel, and guests. Sterling held legal title to the
    Falcon Lair and paid expenses associated with insurance, depreciation, and freight
    fees, among others.
    10 One policy, for example, stated that the Falcon Lair’s “use” was “Private
    Pleasure and / or Corporate Entertaining” and that the yacht was “Warranted to be
    used solely for private pleasure purposes and not to be hired or chartered unless
    approved and permission endorsed hereon.” The record does not reflect any such
    endorsement.
    11
    [*11] refurbishment, Mr. Rogerson and his family sometimes used the
    yacht for personal trips.
    III.   Tax Reporting
    A.    Tax Preparation
    From 2002 through the years at issue, Mr. Rogerson’s personal
    income tax returns and the tax returns of the Rogerson companies were
    prepared by Tony Chang, a certified public accountant and tax
    professional.
    Mr. Chang worked for one major accounting firm from 1994 to
    1996 and for a second major accounting firm from 1996 to 2002. He then
    opened his own boutique practice with a partner. Mr. Rogerson and his
    companies had been clients of the second major accounting firm and
    continued to use Mr. Chang and his partner after they opened their
    boutique practice.
    By 2014, Mr. Chang had been preparing Mr. Rogerson’s personal
    income tax returns and the tax returns of the Rogerson companies for at
    least 12 years. He was familiar with the various entities in the corporate
    structure and the mechanics of the 2014 reorganization. He also was
    familiar with Mr. Rogerson’s yacht activities. For each year from 2014
    to 2016, Mr. Chang considered the application of the passive loss rules
    to Mr. Rogerson’s activities and provided advice to Mr. Rogerson about
    how the activities should be reported on his personal income tax returns.
    As part of Mr. Chang’s analysis, he collected information from Mr.
    Rogerson and other executives at the Rogerson companies, generally by
    having informal discussions with those individuals rather than
    requesting documentation. For each of the years at issue, Mr. Rogerson
    reported his activities consistent with Mr. Chang’s advice.
    B.    Aerospace Activities
    From at least 2005 to 2013, RAC filed Form 1120S, U.S. Income
    Tax Return for an S Corporation, reflecting all the results of
    Mr. Rogerson’s aerospace business. For these years, no effort was made
    on the RAC returns to separate out the various activities of the Rogerson
    companies for purposes of the passive activity loss rules of section 469.
    In his personal income tax returns, Mr. Rogerson reported his
    involvement in RAC’s combined activity as nonpassive.
    12
    [*12] Starting in 2014, RAC and RAEG each filed separate Forms
    1120S. In his personal income tax returns for 2014, 2015, and 2016,
    Mr. Rogerson reported his involvement in RAC as nonpassive and his
    involvement in RAEG as passive.            Based on Schedules K-1,
    Shareholder’s Share of Income, Deductions, Credits, etc., issued by RAC,
    Mr. Rogerson reported a loss of $3,926,922 for 2014, income of $163,814
    for 2015, and a loss of $2,855,771 for 2016. For the same years, he
    reported income of $7,093,760, $3,238,454, and $4,762,543 based on
    Schedules K-1 issued to him by RAEG.
    RC filed a separate Form 1120S starting in 2015, and
    Mr. Rogerson reported his involvement in RC as nonpassive. For the
    taxable years 2015 and 2016, Mr. Rogerson reported ordinary income of
    $391,615 and $380,027, respectively, based on Schedules K-1 issued by
    RC.
    C.        Yacht Activities
    In his 2014 personal income tax return, Mr. Rogerson sought to
    apply a passive loss carryforward of $3,409,986 related to his pre-2014
    TOTO activity to offset the passive income that he reported from
    RAEG. 11 For 2014, 2015, and 2016, however, Mr. Rogerson reported his
    involvement in both the TOTO and the Falcon Lair as nonpassive. With
    respect to the TOTO, Mr. Rogerson claimed losses of $1,110,387,
    $583,165, and $818,841 in 2014, 2015, and 2016, respectively. With
    respect to the Falcon Lair, he claimed losses of $2,009,554, $4,993,719,
    and $5,028,440 during the same years. 12
    IV.    Examination and Notice of Deficiency
    Revenue Agent Amanda Dougherty conducted an examination of
    Mr. Rogerson’s tax returns for 2014, 2015 and 2016. 13 As part of the
    examination, Ms. Dougherty considered whether Mr. Rogerson properly
    characterized his aerospace and yacht activities as passive and
    nonpassive and ultimately determined that he did not.
    11 The parties have since stipulated that the correct amount of the carryover is
    $3,382,990.
    12 The total loss for the tax year 2015 shown above is net of $147,050 of income
    related to the Falcon Lair. That income arose from the favorable resolution of a
    lawsuit.
    13   At the time of the examination, Ms. Dougherty’s name was Amanda Davis.
    13
    [*13] Near the conclusion of the examination, Ms. Dougherty mailed
    Mr. Rogerson a Letter 5153, dated March 20, 2018, with an attached
    examination report proposing, among other adjustments, an accuracy-
    related penalty under section 6662(a) for each tax year at issue. The
    letter was the first written communication sent to Mr. Rogerson
    regarding the penalties under section 6662(a) and was mailed before
    Ms. Dougherty had secured supervisory approval of the penalty
    assertion from her supervisor, Acting Group Manager Mayank Patel.
    When Mr. Rogerson failed to respond to the letter, Mr. Patel sent to
    Mr. Rogerson a signed “30-day letter” (Letter 950) on April 11, 2018,
    which again asserted the penalties under section 6662(a) and offered
    Mr. Rogerson the option to appeal. Additionally, on April 5, 2018,
    Ms. Dougherty prepared Form 300, Civil Penalty Approval Form.
    Mr. Patel signed the Civil Penalty Approval Form on June 25, 2018.
    Mr. Rogerson appealed his case to the Internal Revenue Service
    Office of Appeals (IRS Appeals), 14 but was unable to reach a resolution
    with that office. On March 17, 2020, the Commissioner issued to
    Mr. Rogerson a notice of deficiency that recharacterized his activity with
    respect to RAEG as nonpassive and with respect to the yachts as
    passive. 15 Regarding RAEG, the notice stated, among other things, that
    Mr. Rogerson “materially participated in RAEG” and therefore that “the
    income should be treated as non-passive income.”              The notice
    determined deficiencies in Mr. Rogerson’s federal income tax of
    $2,136,552, $1,884,960, and $1,558,158, plus accuracy-related penalties
    of $427,310, $376,992, and $311,632, for 2014, 2015, and 2016,
    respectively. Mr. Rogerson timely petitioned the Court seeking a
    redetermination of the deficiencies and penalties.
    14On July 1, 2019, the Office of Appeals was renamed the Independent Office
    of Appeals. See Taxpayer First Act, Pub. L. No. 116-25, § 1001, 
    133 Stat. 981
    , 983
    (2019). We will use the name in effect at the times relevant to this case, i.e., the Office
    of Appeals.
    15 With respect to the yachts, the notice elaborated that “Appeals previously
    determined that a similar activity . . . was a valid rental activity despite the extremely
    limited rental income generated; therefore, [Revenue Agent Dougherty] in being
    consistent with the prior Appeals ruling has allowed the activity to remain but limited
    the Passive Losses to the passive income available.”
    14
    [*14]                               OPINION
    I.      Burden of Proof
    In general, the Commissioner’s determinations set forth in a
    notice of deficiency are presumed to be correct, and the taxpayer bears
    the burden of showing that those determinations are in error. Rule
    142(a); Welch v. Helvering, 
    290 U.S. 111
    , 115 (1933). But the
    Commissioner bears the burden of proof with respect to any “new
    matter” he raises. See Rule 142(a). Where relevant, we discuss burden
    of proof in the individual issue sections below. 16
    II.     Section 469 Issues
    Individual taxpayers may generally deduct, under sections 162
    and 212 respectively, ordinary and necessary expenses paid or incurred
    in carrying on a trade or business or for the production of income. But
    the Code disallows any current deduction for a “passive activity” loss.
    I.R.C. § 469(a)(1), (b). A passive activity loss is the amount (if any) by
    which the aggregate losses from the taxpayer’s passive activities for a
    taxable year exceed the aggregate income from passive activities for that
    year. I.R.C. § 469(d)(1). Thus, under the Code, passive losses cannot be
    used to offset income from nonpassive activities. See Beecher v.
    Commissioner, 
    481 F.3d 717
    , 721 (9th Cir. 2007), aff’g Cal Interiors Inc.
    v. Commissioner, 
    T.C. Memo. 2004-99
    . A disallowed passive activity loss
    is not lost; rather, it is deferred or suspended and remains available as
    a deduction against future passive income. I.R.C. § 469(b).
    In light of these rules, a great deal turns on whether an activity
    is passive or nonpassive under section 469. We therefore provide a brief
    discussion of how one makes that determination and then apply the
    relevant principles to Mr. Rogerson’s case.
    A.     Passive Activities
    A passive activity generally is an activity involving the conduct of
    a trade or business in which the taxpayer does not materially
    16 Generally speaking, a burden of proof analysis is required only in the rare
    instance of an evidentiary tie. See, e.g., Knudsen v. Commissioner, 
    131 T.C. 185
    , 189
    (2008), supplementing 
    T.C. Memo. 2007-340
    ; see also FRGC Inv., LLC v.
    Commissioner, 89 F. App’x 656 (9th Cir. 2004), aff’g 
    T.C. Memo. 2002-276
    . As we
    discuss further below, we resolve this case on the preponderance of the evidence, and
    therefore Mr. Rogerson’s arguments regarding the burden of proof are unavailing. See,
    e.g., Dagres v. Commissioner, 
    136 T.C. 263
    , 279 (2011).
    15
    [*15] participate. I.R.C. § 469(c)(1). Moreover, subject to certain
    exceptions not relevant here, rental activities are passive regardless of
    whether the taxpayer materially participates. See I.R.C. § 469(c)(2), (4),
    (7).
    B.     Material Participation
    A taxpayer’s participation in an activity is “material” only if his
    involvement in the operations of the activity is regular, continuous, and
    substantial. I.R.C. § 469(h)(1). Temporary regulations first issued in
    1988 provide seven tests for determining when this standard is satisfied.
    See Temp. 
    Treas. Reg. § 1.469
    -5T(a) (stating that an individual will be
    treated as materially participating in an activity “if and only if” one of
    the seven tests is satisfied). Because, as explained below, we can resolve
    Mr. Rogerson’s case based on one of the regulatory tests (the “five of ten”
    test), we do not discuss the remaining ones.
    1.     The Five of Ten Test
    For purposes of section 469(h)(1), a taxpayer is treated as
    materially participating in an activity if he materially participated in
    the activity for any five out of the ten years immediately preceding the
    taxable year. Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5). The preamble to the
    temporary regulations adopting the test explained its purpose as
    follows:
    These rules are included because the Service
    believes that an activity in which an individual has
    materially participated over a long period of time . . . is
    likely to represent the individual’s principal livelihood
    rather than a passive investment. In particular, the
    Service does not believe that withdrawal from a
    longstanding active business . . . should convert an
    individual’s earnings from the business to passive income.
    T.D. 8175, 1988-
    1 C.B. 191
    , 203.
    By its terms, the five of ten test applies to an activity that is the
    same over time. But the regulations also explain how to apply the test
    when a taxpayer’s activities change over time. In these circumstances,
    final regulations call for a comparison of the taxpayer’s current-year
    activities with his preceding-year activities. Specifically, Treasury
    Regulation § 1.469-5(j)(1) provides as follows:
    16
    [*16] For purposes of [the five of ten test], a taxpayer has
    materially participated in an activity for a preceding
    taxable year if the activity includes significant section 469
    activities[17] that are substantially the same as significant
    section 469 activities that were included in an activity in
    which the taxpayer materially participated (determined
    without regard to [the five of ten test]) for the preceding
    taxable year.
    In other words, if there is substantial similarity between the
    current-year activity and activities that the taxpayer materially
    participated in during a preceding year, then that preceding year counts
    as one year in applying the five of ten test to the current-year activity.
    See id. If there is substantial similarity between the current-year
    activity and activities that the taxpayer materially participated in for
    five of the last ten years, then the five of ten test is satisfied and the
    taxpayer is treated as materially participating in the current-year
    activity for the current year. See id.; Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5).
    The history of Treasury Regulation § 1.469-5(j)(1) confirms this
    interpretation. When temporary regulations first established the five of
    ten test in 1988, they did not initially address how the test should apply
    to a situation in which an individual’s business activities evolve during
    the ten-year period. See T.D. 8175, 1988-1 C.B. at 203; see also T.D.
    8253, 1989-
    1 C.B. 121
    , 122 (noting the omission). In 1989, however, the
    Department of the Treasury (Treasury) and the IRS 18 issued additional
    temporary regulations under section 469 (1989 amendments). The 1989
    amendments added Temporary Treasury Regulation § 1.469-4T to
    define the concept of an “activity” for purposes of section 469. See T.D.
    8253, 1989-1 C.B. at 122–23. The definition included the concept of an
    “undertaking,” which was the smallest unit that could constitute an
    activity. Id at 122.
    As relevant here, the 1989 amendments also made certain
    changes to Temporary Treasury Regulation § 1.469-5T, including
    adding paragraph (j)(1), T.D. 8253, 1989-1 C.B. at 158, the precursor to
    Treasury Regulation § 1.469-5(j)(1). The preamble to the 1989
    amendments explained the new rule as follows:
    17 We explain further below the origin and meaning of the phrase “significant
    section 469 activities.”
    18   For simplicity, we refer to both Treasury and the IRS as “Treasury.”
    17
    [*17]          Under § 1.469-4T, the business and rental
    operations that constitute an activity may change from
    year to year. The existing regulations do not address how
    the material participation tests that are based on
    participation in prior years will apply in cases in which
    such changes occur. Accordingly, this document amends
    § 1.469-5T to provide that, for purposes of the material
    participation tests that are based on participation in prior
    years, a taxpayer is treated as materially participating in
    an activity for a prior taxable year if the activity includes
    an undertaking involving substantially the same
    operations as an undertaking that was included in an
    activity in which the taxpayer materially participated
    during such prior taxable year.
    T.D. 8253, 1989-1 C.B. at 126. The text of the temporary rule tracked
    the preamble’s explanation:
    For purposes of [the five of ten test], a taxpayer has
    materially participated in an activity for a preceding
    taxable year if such activity includes an undertaking that
    involves substantially the same business and rental
    operations as an undertaking that was included in an
    activity in which the taxpayer materially participated . . .
    for such preceding taxable year.
    Temp. 
    Treas. Reg. § 1.469
    -5T(j)(1), T.D. 8253, 1989-1 C.B. at 158. Like
    the current rule, therefore, the rule issued as part of the 1989
    amendments required a comparison of the taxpayer’s current-year
    activity to his preceding-year activity. If the activities were sufficiently
    similar—i.e., if they included undertakings that involved similar
    business operations—and if the taxpayer materially participated in the
    preceding-year activity, then the taxpayer would also be treated as
    materially participating in the current-year activity during the
    preceding year. See id.
    By 1992, Treasury determined that the 1989 definition of activity,
    including the concept of undertaking, was too complicated and
    mechanical and that a more flexible approach was required. See
    Limitation on Passive Activity Losses and Credits—Definition of
    Activity, 
    57 Fed. Reg. 20,802
    , 20,803 (proposed May 15, 1992). As a
    result, Treasury issued Proposed Treasury Regulation § 1.469-4, 57 Fed.
    Reg. at 20,804, to replace Temporary Treasury Regulation § 1.469-4T.
    18
    [*18] Simultaneously, Treasury finalized other parts of the 1989
    amendments, including the clarification of the five of ten test that
    previously appeared at Temporary Treasury Regulation § 1.469-5T(j)(1).
    T.D. 8417, 1992-
    1 C.B. 173
    , 186. 19 Treasury did not, however, finalize
    the original temporary regulations—i.e., rules that were issued in 1988
    and not amended in 1989. Those regulations, which include the seven
    regulatory tests for determining material participation and certain
    related rules, continued in their temporary form. Thus, today, the five
    of ten test appears in a temporary regulation, while the rule explaining
    how the five of ten test should be applied appears in a final regulation.
    When it was finalized in 1992, the rule explaining how the five of
    ten test should be applied was modified slightly to its current form,
    essentially replacing the concept of an “undertaking” with that of a
    “significant section 469 activit[y].” See 
    Treas. Reg. § 1.469-5
    (j)(1). In
    describing the change, Treasury stated:
    The final regulations generally adopt the
    amendments as originally proposed. They only make
    certain minor technical modifications to the amendments,
    including changes that conform them to the proposed
    regulations under § 1.469-4, relating to the definition of
    activity.
    T.D. 8417, 1992-1 C.B. at 174.
    Thus, the differences between the explanatory rule as originally
    proposed at Temporary Treasury Regulation § 1.469-5T(j)(1) and the
    final rule at Treasury Regulation § 1.469-5(j)(1) were not intended to be
    significant. And while the final rule’s phrasing is somewhat convoluted,
    the text and regulatory history leave us with no doubt regarding its
    meaning. Specifically, the rule provides that even if a taxpayer’s mix of
    activity changes over time, the taxpayer is treated as materially
    participating in a current-year activity if that activity substantially
    overlaps with activities that the taxpayer materially participated in for
    19 Treasury finalized the 1989 amendments to avoid potential disputes about
    whether they would expire under section 7805(e)(2), which provides that all temporary
    regulations expire three years after the date they are issued. See T.D. 8417, 1992-1
    C.B. at 174. Section 7805(e)(2) was enacted in 1988 and applies only to temporary
    regulations issued after November 20, 1988. See Technical and Miscellaneous Revenue
    Act of 1988, Pub. L. No. 100-647, § 6232, 
    102 Stat. 3342
    , 3734. Accordingly, section
    7805(e)(2) potentially applied to the 1989 amendments, but not to the original
    temporary regulations. See T.D. 8175, 1988-1 C.B. at 233–34.
    19
    [*19] five of the last ten years. See 
    Treas. Reg. § 1.469-5
    (j)(1); Temp.
    Treas. Reg. §. 1.469-5T(a)(5). As one commentator put it, “any
    significant overlap between activities for different tax years causes them
    to be treated as the same activity for purposes of the 5-out-of-10-years
    test.” Libin Zhang, Passive Loss Rules, 549-3rd Tax Mgmt. (BNA),
    at IV.A.5.
    2.     Application to Mr. Rogerson and RAEG
    In this case, we apply the material participation rules, and the
    five of ten test in particular, to determine whether Mr. Rogerson’s
    involvement in RAEG was passive or nonpassive during 2014, 2015, and
    2016. The Commissioner contends that Mr. Rogerson’s involvement was
    nonpassive because Mr. Rogerson has failed to carry his burden to
    establish that he did not materially participate in RAEG. Additionally,
    the Commissioner argues that Mr. Rogerson satisfies the five of ten test
    for material participation. 20 For the reasons described below, we agree
    that Mr. Rogerson materially participated in RAEG under the five of ten
    test, and therefore that his involvement in the activity must be treated
    as nonpassive.
    Applying the five of ten test to RAEG for the tax years 2014, 2015,
    and 2016 requires us to examine Mr. Rogerson’s pre-2014 involvement
    in the activities that ultimately constituted RAEG. See Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5). Moreover, given that the organization of
    Mr. Rogerson’s activities changed during the relevant years (e.g.,
    because of the 2014 reorganization), Treasury Regulation § 1.469-5(j)(1)
    informs our analysis.
    Turning first to Mr. Rogerson’s tax reporting, we have found at
    his request that all the results of his aerospace business, including the
    RAEG-related activity, were reported on RAC’s income tax returns from
    2005 to 2013. We have further found, again at Mr. Rogerson’s request,
    that no effort was made during these years to separate the various
    activities of the Rogerson companies for purposes of the passive activity
    loss rules. In other words, RAC treated the aerospace business,
    including the activities that became part of RAEG, as a single,
    undifferentiated activity on its tax returns and when it issued Schedules
    K-1 to Mr. Rogerson. Mr. Rogerson reported his involvement in this
    20 The Commissioner makes certain other arguments based on the amount of
    time Mr. Rogerson spent on RAEG during 2014, 2015, and 2016, but in light of our
    analysis under the five of ten test, we need not reach those arguments.
    20
    [*20] consolidated activity as nonpassive on his personal income tax
    returns and similarly did not attempt to separate the activities. Cf.
    
    Treas. Reg. § 1.469-4
    (d)(5)(i) (providing that a shareholder of an S
    corporation may not treat activities grouped together by his corporation
    as separate activities). According to his own tax returns, therefore, Mr.
    Rogerson maintained that he materially participated in his aerospace
    business as a whole from at least 2005 to 2013.
    Mr. Rogerson does not seem to dispute that his involvement in
    the overall business was nonpassive during those years; indeed, he
    maintains that Rogerson Kratos, which also was part of the aerospace
    business from 2005 to 2013, required large amounts of his time, and that
    he was involved with product development, manufacturing, and sales
    for the Rogerson Kratos product lines. Mr. Rogerson continued to report
    his activity with respect to Rogerson Kratos (i.e., RAC), as well as RC,
    as nonpassive during the years 2014 to 2016. And Mr. Chang,
    Mr. Rogerson’s tax return preparer, testified with respect to the
    consolidated RAC activity that “it was pretty clear [Mr. Rogerson] was
    involved in that business.”
    There also is no dispute that, for the years 2005 to 2013, the
    product lines that ultimately were combined into RAEG in 2014 were a
    significant part of the consolidated RAC activity that Mr. Rogerson
    characterized as nonpassive. As described above, for purposes of
    applying the five of ten test, a taxpayer is treated as materially
    participating in an activity (here, RAEG) during a preceding year if the
    activity was included in an activity, or substantially overlaps with an
    activity (here, the aerospace business as a whole), in which the taxpayer
    materially participated for the preceding year. 
    Treas. Reg. § 1.469
    -
    5(j)(1).
    There can be no question there is substantial overlap between
    RAEG’s activities in 2014 and later years and the activities of the overall
    aerospace business before 2014. Documentary evidence and the
    testimony of multiple witnesses confirms that the products, employees,
    and customers of the Rogerson companies were generally the same
    before and after the 2014 reorganization. In other words, the business
    activities that became part of RAEG were the same before and after the
    reorganization, but organized differently. And each of the RAEG
    product lines had been part of the RAC consolidated activity since long
    before the relevant ten-year period. As Mr. Rogerson states in his
    opening brief: “[T]he RAEG Activity that commenced in 2014 is really
    the compilation and consolidation of multiple product lines from various
    21
    [*21] entities that had been conducted on a historical basis.” Pet’r’s
    Simultaneous Opening Br. 73.
    In light of these facts and the applicable regulations, we conclude
    that, in 2014, 2015, and 2016, Mr. Rogerson’s RAEG activity
    substantially overlapped with an activity (i.e., the aerospace business as
    a whole) that he materially participated in from at least 2005 to 2013.
    Under Treasury Regulation § 1.469-5(j)(1), therefore, the five of ten test
    has been met for each of 2014, 2015, and 2016, and Mr. Rogerson is
    treated as materially participating in RAEG for those years. See also
    Temp. 
    Treas. Reg. § 1.469
    -5T(a)(5) (setting forth the five of ten test).
    3.      Mr. Rogerson’s Counterarguments
    Mr. Rogerson makes three primary arguments regarding the five
    of ten test: (1) the test is a new matter not properly before the Court,
    (2) the regulation containing the test is substantively and procedurally
    invalid, and (3) even if it does apply, the test does not require that
    Mr. Rogerson be treated as materially participating in RAEG. As we
    explain below, none of these arguments changes our conclusion.
    a.      New Matter
    To begin with, Mr. Rogerson argues that the five of ten test is a
    new matter not pleaded by the Commissioner. Therefore, Mr. Rogerson
    contends, the matter is not properly before the Court or, in the
    alternative, the Commissioner bears the burden of proof. 21 See Shea v.
    Commissioner, 
    112 T.C. 183
    , 191 (1999). This argument borders on
    frivolous. 22
    Mr. Rogerson also contends that the Commissioner bears the burden of proof
    21
    with respect to certain other arguments raised by the Commissioner. Because we
    resolve this case without reaching those arguments, we need not address
    Mr. Rogerson’s further contentions.
    22 As one component of the argument, Mr. Rogerson characterizes the five of
    ten test as an “estoppel” theory. Pet’r’s Simultaneous Suppl. Br. 8. But Mr. Rogerson’s
    characterization demonstrates a misunderstanding of the rule. The five of ten test
    does not estop anyone from doing anything. Rather it provides guidance on how the
    statutory material participation test applies when either a relevant activity or a
    taxpayer’s participation in a relevant activity changes over time. And Treasury
    Regulation § 1.469-5(j)(1) provides more specific guidance on the application of the five
    of ten test. As Mr. Rogerson notes, it is a “Definitional Reg.” Pet’r’s Simultaneous
    Suppl. Br. 2.
    22
    [*22] The Commissioner is considered to have raised a new matter
    when the theory or basis upon which he relies was not stated in the
    notice of deficiency and the new theory or basis requires the
    presentation of different evidence. Id. at 197. But a new theory that
    merely clarifies or develops the original determination is not a new
    matter in respect of which the Commissioner bears the burden of proof.
    Id. at 191 (citing Wayne Bolt & Nut Co. v. Commissioner, 
    93 T.C. 500
    ,
    507 (1989)).
    The notice of deficiency in this case stated that Mr. Rogerson’s
    income from RAEG should be treated as nonpassive because he
    “materially participated in RAEG.” Consistent with the notice, the
    Pretrial Memoranda of each party reflects an understanding that the
    nature of Mr. Rogerson’s participation in RAEG would be addressed at
    trial.
    As already discussed, the five of ten test is one of the seven
    regulatory tests for determining whether a taxpayer materially
    participated in an activity. See discussion in Opinion Part II.B.1 above.
    Indeed, Mr. Rogerson’s own Pretrial Memorandum explained that the
    applicable regulations include “seven tests to determine whether a
    taxpayer has materially participated.” 23 Pet’r’s Pretrial Mem. 6. We
    therefore have no trouble concluding that the Commissioner’s reliance
    on the five of ten test is a clarification or development of his original
    determination and not a new matter. See Estate of Abraham v.
    Commissioner, 
    408 F.3d 26
    , 36 (1st Cir. 2005) (stating there is no
    requirement that a notice of deficiency be as detailed as a trial brief),
    aff’g 
    T.C. Memo. 2004-39
    , amended 
    429 F.3d 294
     (1st Cir. 2005); Ax v.
    Commissioner, 
    146 T.C. 153
    , 170–71 (2016) (construing a notice of
    deficiency with “reasonable breadth” to conclude that it encompassed
    assertions later made by the Commissioner). 24 Nor do we perceive any
    surprise or prejudice to Mr. Rogerson where the Commissioner has
    consistently maintained—in his notice of deficiency, Answer, and
    23The Pretrial Memorandum also claimed that only three of the tests were
    relevant to this case, not including the five of ten test. But that statement simply
    represents Mr. Rogerson’s view of the case and, of course, is not binding on the
    Commissioner or the Court.
    24 In Ax, we also cited the following statement from Abatti v. Commissioner,
    
    644 F.2d 1385
    , 1390 (9th Cir. 1981), rev’g 
    T.C. Memo. 1978-392
    : “[I]f a deficiency notice
    is broadly worded and the Commissioner later advances a theory not inconsistent with
    that language, the theory does not constitute new matter, and the burden of proof
    remains with the taxpayer.” Ax, 
    146 T.C. at 171
     n.18.
    23
    [*23] Pretrial   Memorandum—that             Mr.     Rogerson      materially
    participated in RAEG.
    In summary, we conclude the five of ten test is properly before
    this Court. And, although we do not decide this issue based on the
    burden of proof, the burden with respect to the five of ten test remains
    with Mr. Rogerson.
    b.     Regulation Validity
    Mr. Rogerson also contends, for the first time in his Supplemental
    Briefing, that the five of ten test is an invalid rule, both substantively
    and procedurally. We address these arguments in turn.
    i.     Substantive Validity
    Mr. Rogerson argues that the five of ten test is substantively
    invalid because it contradicts section 469. Specifically, Mr. Rogerson
    contends that material participation exists under the statute only to the
    extent that a taxpayer’s involvement in an activity is regular,
    continuous, and substantial during the year under consideration, citing
    section 469(h). Because the five of ten test analyzes taxpayer
    participation in an activity during prior years for purposes of
    determining participation in the current year, Mr. Rogerson views the
    test as contrary to the statute. We disagree.
    Contrary to Mr. Rogerson’s assertion, section 469 does not
    mandate the consideration of only present-year activity in determining
    material participation. Rather, section 469(h)(1) provides that “[a]
    taxpayer shall be treated as materially participating in an activity only
    if the taxpayer is involved in the operations of the activity on a basis
    which is—(A) regular, (B) continuous, and (C) substantial.” Nothing in
    the section addresses the timing of the taxpayer’s involvement. Further,
    the statute dictates that “[t]he Secretary shall prescribe such
    regulations as may be necessary or appropriate to carry out provisions
    of this section, including regulations [that] specify what constitutes . . .
    material participation . . . for purposes of this section.” I.R.C. § 469(l)(1).
    In other words, the statute is silent on the relevant period for assessing
    24
    [*24] a taxpayer’s involvement and directs the Secretary to fill in any
    gaps via regulation. 25
    In light of these provisions, we easily conclude that the five of ten
    is not contrary to section 469 and that the authorities Mr. Rogerson cites
    are inapplicable. 26
    ii.     Procedural Validity
    Next, Mr. Rogerson argues that the five of ten test is procedurally
    invalid because the temporary regulation in which it appears was
    enacted in violation of the notice and comment requirements of the
    Administrative Procedure Act (APA). See 
    5 U.S.C. § 553
    (b) and (c).
    Specifically, Mr. Rogerson observes that the five of ten test appears in
    Temporary Treasury Regulation § 1.469-5T, which was issued in 1988
    without notice and comment. As described in Opinion Part II.B.1 above,
    certain parts of the original package were amended in 1989 and finalized
    in 1992, including Treasury Regulation § 1.469-5(j)(1). But the seven
    tests for material participation remain in their original temporary form.
    Mr. Rogerson’s argument raises an interesting issue that has
    been analyzed by judges and legal scholars. See, e.g., Intermountain Ins.
    Serv. of Vail, LLC v. Commissioner, 
    134 T.C. 211
    , 238–48 (2010)
    (Halpern & Holmes, JJ., concurring), supplementing 
    T.C. Memo. 2009-195
    , rev’d and remanded on other grounds, 
    650 F.3d 691
     (D.C. Cir.
    2011), vacated and remanded, 
    566 U.S. 972
     (2012); Eleanor D. Wood,
    Note, Rejecting Tax Exceptionalism: Bringing Temporary Treasury
    Regulations Back in Line With the APA, 
    100 Minn. L. Rev. 839
     (2015)
    25The provisions Mr. Rogerson cites—section 469(a)(1), (c)(1), and (f)—do not
    support a different conclusion. In relevant part, section 469(a)(1) simply states that
    passive activity losses are disallowed “for the taxable year,” and section 469(c)(1)
    provides that a passive activity is any activity in which a taxpayer does not materially
    participate. That section 469 specifies the year in which the loss is disallowed says
    nothing about the timeframe for assessing a taxpayer’s participation in an activity.
    Nor does the special rule for carryover losses from a former passive activity in section
    469(f)—an issue that is irrelevant in the case of a former nonpassive activity—preclude
    Treasury from issuing other rules for taxpayers who change their participation levels
    over time.
    26 The determination that the five of ten test is not contrary to section 469 also
    resolves Mr. Rogerson’s argument that the five of ten test is unconstitutional, because
    that argument is premised on the existence of a direct conflict between the statute and
    the regulation. Additionally, because this conclusion fully addresses Mr. Rogerson’s
    arguments, we need not decide on the appropriate standard of review for temporary
    Treasury regulations such as those at issue here.
    25
    [*25] (collecting authorities); cf. Mann Constr., Inc. v. United States, 
    27 F.4th 1138
    , 1148 (6th Cir. 2022) (“Because the IRS’s process for issuing
    Notice 2007-83 did not satisfy the notice-and-comment procedures for
    promulgating legislative rules under the APA, we must set it aside.”).
    We need not resolve this issue, however, because it does not change the
    result in Mr. Rogerson’s case, as described below.
    For purposes of this discussion, we will assume (only for the sake
    of analysis) that Mr. Rogerson is correct and that the five of ten test is a
    procedurally invalid regulation that cannot be applied here. Because
    Mr. Rogerson’s challenge to the regulation is that it was issued without
    first being subject to notice and comment, accepting his theory would
    mean that other temporary regulations issued as part of the same
    package would also be invalid. This would include all seven regulatory
    tests for determining material participation and the related rules in
    Temporary Treasury Regulation § 1.469-5T.
    Assuming solely for the sake of analysis that (as Mr. Rogerson
    argues) the seven regulatory tests for material participation would need
    to be disregarded, we would be left with the general statutory rule of
    section 469(h) to determine whether Mr. Rogerson materially
    participated in RAEG during 2014, 2015, and 2016. As noted above,
    that provision states as follows: “A taxpayer shall be treated as
    materially participating in an activity only if the taxpayer is involved in
    the operations of the activity on a basis which is—(A) regular,
    (B) continuous, and (C) substantial.” 27 Based on the record before us,
    we are convinced that Mr. Rogerson’s involvement in RAEG satisfied
    this standard for 2014, 2015, and 2016. 28
    27 One of the seven regulatory tests is similar to the statutory rule, but with
    some additional limitations related to the number of hours required and the types of
    hours that qualify. See Temp. 
    Treas. Reg. § 1.469
    -5T(a)(7), (b)(2), (f)(2); see also
    Mordkin v. Commissioner, 
    T.C. Memo. 1996-187
    , slip op. at 24, 45–48 (describing
    limiting rules). The effect of these rules is to limit a taxpayer’s ability to qualify as
    materially participating, which in this case could help Mr. Rogerson. But if one accepts
    the premise of Mr. Rogerson’s argument that Temporary Treasury Regulation § 1.469-
    5T(a)(5) is procedurally invalid, then the other portions of the regulation would also
    need to be ignored and therefore would not afford him any protection.
    28This conclusion is consistent with Treasury Regulation § 1.469-5(f)(1), which
    was finalized in 1992 and states that
    any work done by an individual (without regard to the capacity in
    which the individual does the work) in connection with an activity in
    26
    [*26] Mr. Rogerson was a hands-on CEO during the years at issue.
    No major decisions could be made without his input, and no detail was
    too small for his attention. For example, Mr. Rogerson weighed in on
    accounting and financial reporting minutiae, interacted directly with
    company employees, and line-edited company documents, such as offer
    letters and press releases. Top RAEG executives reached out to him for
    permission to undertake routine actions, such as responding to customer
    inquiries or providing small bonuses or raises to company employees.
    On one occasion, RAEG’s president sought approval from Mr. Rogerson
    to offer an employee a raise of $0.50 per hour. On other occasions,
    executives confirmed that Mr. Rogerson’s direct involvement, whether
    in the form of “ongoing and specific directives,” “edict[s],” or other
    directions, would be required to get things done.
    Mr. Rogerson’s involvement in sales and customer relations
    further belies any assertion that he was not substantially involved in
    RAEG’s operations. Mr. Rogerson traveled to meet with RAEG
    customers, including on one occasion to Indonesia. He also met with
    RAEG customers at RAEG’s offices. Indeed, the record reflects more
    than one instance in which Mr. Rogerson told RAEG executives that he
    would resolve a problem by meeting personally with the customer
    involved. Customers sometimes reached out to Mr. Rogerson directly to
    discuss issues, and Mr. Rogerson was involved in multiround
    negotiations with customers on pricing and other matters. He also
    approved any bid provided to a customer with an aggregate value over
    $100,000; in one month in 2016, that approval was requested at least a
    dozen times.
    In the face of a record demonstrating that he spoke and emailed
    with executives regularly on RAEG matters, Mr. Rogerson asserts that
    most of these interactions took only minutes of his time. Even assuming
    that to be the case, however, Mr. Rogerson’s ability to respond to
    detailed inquiries so quickly shows his detailed knowledge of every
    aspect of the business. Indeed, many of Mr. Rogerson’s communications
    reflect first-hand experience with RAEG’s employees, customers, and
    products that extends far beyond what could have been acquired by a
    passive investor.
    which the individual owns an interest at the time the work is done
    shall be treated for purposes of this section as participation of the
    individual in the activity.
    27
    [*27] To summarize, Mr. Rogerson would not prevail even if he were
    correct about the procedural validity of the five of ten test, because we
    find that he was regularly, continuously, and substantially involved in
    the operations of RAEG during 2014, 2015, and 2016 within the
    meaning of section 469(h). Accordingly, we need not decide whether the
    five of ten test is procedurally valid and turn instead to Mr. Rogerson’s
    final argument.
    c.    Application of the Five of Ten Test
    Mr. Rogerson argues that even if the five of ten test is valid and
    potentially applicable here, he should still prevail. Specifically,
    Mr. Rogerson asserts that applying the rules defining an “activity” for
    purposes of section 469 to the RAEG product lines before and after the
    2014 reorganization results in two possible alternatives. First, RAEG
    could be viewed as an entirely new activity following the 2014
    reorganization, with the result that there are no prior years of
    involvement for purposes of applying the five of ten test. Second, if a
    comparison of Mr. Rogerson’s involvement in the RAEG activities before
    and after 2014 is required despite the 2014 reorganization,
    Mr. Rogerson contends that the five of ten test still does not apply
    because his involvement in the RAEG product lines was passive even
    before 2014. We take these arguments in turn.
    i.     New Activity Argument
    Treasury Regulation § 1.469-4(c)(1) discusses the concept of an
    “activity” for purposes of section 469 and provides as follows: “One or
    more trade or business activities or rental activities may be treated as a
    single activity if the activities constitute an appropriate economic unit
    for the measurement of gain or loss for purposes of section 469.” If a
    taxpayer decides based on all the facts and circumstances that multiple
    activities constitute a single economic unit and therefore may be treated
    as a single activity, the regulations refer to that determination as
    “grouping.” See 
    Treas. Reg. § 1.469-4
    (c)(2).
    In support of his first proposed alternative—i.e., that for purposes
    of the five of ten test, RAEG did not exist as activity before 2014—
    Mr. Rogerson states as follows:
    It is clear that the Rogerson companies did not actually
    segregate [R]AEG as a separate “activity” before 2014. No
    position was taken on any RAC return before 2014
    reflecting anything other than a single activity.
    28
    [*28] [Mr.] Chang clearly believed no such determination was
    appropriate because everything related to the Rogerson
    companies was reported on a single RAC return.
    Pet’r’s Simultaneous Suppl. Br. 25. Accordingly, Mr. Rogerson appears
    to contend that before the 2014 reorganization, the aerospace business
    as a whole (as reflected on RAC’s returns) was the relevant activity
    under the regulations and that RAEG should therefore be treated as a
    new activity for 2014, 2015, and 2016. If RAEG was a new activity
    starting in 2014, Mr. Rogerson further contends, then the five of ten test
    cannot apply, because Mr. Rogerson would have no history of
    involvement in the activity.
    Mr. Rogerson’s argument is foreclosed by Treasury Regulation
    § 1.469-5(j)(1). As discussed in detail in Opinion Part II.B.1 above, that
    rule does not require the taxpayer’s precise activity to have existed in
    prior years for purposes of applying the five of ten test. Indeed, the
    entire point of the rule is to address situations in which circumstances
    change over time. The rule applies as long as the taxpayer’s current-
    year activity (here, RAEG) “includes significant section 469 activities”
    (here, the RAEG product lines or RAEG as a whole) “that are
    substantially the same as significant section 469 activities there were
    included in [a preceding-year activity] in which the taxpayer materially
    participated” (here, the aerospace business as a whole). In other words,
    all that is required is substantial overlap between the current and
    preceding-year activities. The record here leaves no doubt that the
    activity conducted by RAEG in 2014, 2015, and 2016 overlaps
    substantially with the “single activity” reflected on RAC’s prior
    returns—i.e., the aerospace business as a whole.
    ii.    Passive Activity Argument
    Mr. Rogerson’s second alternative—that his involvement in the
    RAEG product lines was passive even before 2014—faces a factual
    problem. There is no question that before 2014 Mr. Rogerson’s
    involvement in the aerospace business as a whole was nonpassive.
    Similarly, there is no dispute that Mr. Rogerson reported his
    involvement in the aerospace business as a whole, including the
    activities that became part of RAEG, as nonpassive. In light of Treasury
    Regulation § 1.469-5(j)(1), these facts are sufficient to satisfy the five of
    ten test with respect to RAEG in 2014, 2015, and 2016.
    29
    [*29] In an attempt to escape the implications of his prior reporting,
    Mr. Rogerson contends that neither he nor RAC ever made an
    affirmative decision to group the RAEG product lines with his other
    aerospace activities. According to Mr. Rogerson, RAC’s returns made no
    effort to indicate whether they reported “one activity or many activities,
    grouped or not.” Pet’r’s Simultaneous Answering Br. 34. The
    implication seems to be that, if the product lines that became part of
    RAEG were not formally grouped with RAC in prior years, then
    Mr. Rogerson’s reporting and activity with respect to RAC as a whole
    would be irrelevant in applying the five of ten test to the RAEG product
    lines in subsequent years. But Mr. Rogerson is incorrect.
    The regulations Mr. Rogerson cites required RAC to perform a
    grouping analysis for the years before 2014. See 
    Treas. Reg. § 1.469
    -
    4(d)(5)(i) (“[A]n S corporation . . . must group its activities under the
    rules of this section.”). Mr. Rogerson concedes that, before 2014, RAC
    reported the consolidated results of the entire aerospace business
    without differentiation. 29 This approach indicates that RAC treated the
    aerospace business as a single activity (or as multiple activities grouped
    into a single activity) for purposes of section 469. Mr. Rogerson concedes
    as much, stating: “No position was taken on any RAC return before 2014
    reflecting anything other than a single activity.” Pet’r’s Simultaneous
    Suppl. Br. 25. And Mr. Rogerson was not free to distinguish between
    his various aerospace activities for purposes of section 469 for any year
    in which RAC combined them. See 
    Treas. Reg. § 1.469-4
    (d)(5)(i)
    (providing that a shareholder of an S corporation may not treat
    activities grouped together by his corporation as separate activities).
    Accordingly, RAC’s treatment of the aerospace business as a single
    activity before 2014 required Mr. Rogerson to take the same approach.
    He did so and determined that his involvement in the overall business
    was active. The five of ten test requires nothing more.
    29 Mr. Rogerson cites Hardy v. Commissioner, 
    T.C. Memo. 2017-16
    , in which
    our Court concluded that taxpayers who merely report an S corporation’s activity as
    nonpassive do not thereby group that activity with their other nonpassive activity. But
    that case considered whether activity reported on a Schedule K-1 had been grouped
    with other activity not reported on the Schedule K-1; it did not consider whether
    undifferentiated amounts reported on a single Schedule K-1 had been grouped
    together. 
    Id.
     at *15–16. Additionally, Hardy analyzed only the grouping regulations
    under Treasury Regulation § 1.469-4 and did not consider the five of ten test.
    30
    [*30] Having addressed Mr. Rogerson’s involvement with RAEG, we
    next turn to the proper characterization under section 469 of
    Mr. Rogerson’s yacht activities for 2014, 2015, and 2016.
    C.      Rental Rules and the Yacht Activities
    1.      Rental Activities
    As noted above, rental activities are passive regardless of a
    taxpayer’s participation, subject to certain exceptions. See I.R.C.
    § 469(c)(2), (4), (7). 30 A rental activity is “any activity where payments
    are principally for the use of tangible property.” I.R.C. § 469(j)(8); see
    also Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(i) (stating that an activity is a
    rental activity if during the taxable year tangible property held in
    connection with the activity is used by customers or held for use by
    customers and gross income (or expected gross income) attributable to
    the activity represents amounts paid or to be paid principally for the use
    of the tangible property).
    Neither of Mr. Rogerson’s yachts (the TOTO and the Falcon Lair)
    was chartered during 2014, 2015, or 2016, but the parties agree that
    Mr. Rogerson intended to charter the yachts. Accordingly, the yachts
    were tangible property held for use by customers, and any income from
    the yacht activities would have represented amounts paid principally for
    the use of the tangible property. The yacht activities therefore were
    rental activities unless an exception applies. 31 See I.R.C. § 469(j)(8);
    Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(i).
    2.      Exceptions to Rental Activity
    The regulations provide six exceptions to the definition of “rental
    activity,” two of which are relevant to our analysis. Specifically, an
    activity involving the use of tangible property is not a rental activity if
    for the taxable year—(1) the average period of customer use for the
    See also, e.g., Kessler v. Commissioner, 
    T.C. Memo. 2003-185
    ; Tarakci v.
    30
    Commissioner, 
    T.C. Memo. 2000-358
    ; Frank v. Commissioner, 
    T.C. Memo. 1996-177
    .
    31 The Commissioner argues that, for purposes of analyzing the yacht
    activities, the TOTO should be viewed as a separate activity from the Falcon Lair and
    that each of the entities through which Mr. Rogerson held and operated the Falcon
    Lair (Platinum and Sterling) also should be analyzed separately. By contrast,
    Mr. Rogerson argues that all his yacht activities should be treated as a single activity.
    Because our conclusion would be the same regardless of how the yacht activities are
    grouped, we need not resolve this issue.
    31
    [*31] property is seven days or less; or (2) the average period of customer
    use for such property is 30 days or less, and significant personal services
    are provided by or on behalf of the owner of the property in connection
    with making the property available for use by customers. Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(ii)(A) and (B).
    For purposes of these rules, a period of customer use is the period
    “during which a customer has a continuous or recurring right to use” the
    property. 
    Treas. Reg. § 1.469-1
    (e)(3)(iii)(D). The average period of
    customer use is calculated by dividing the aggregate number of days in
    all periods of customer use of the property by the number of periods of
    customer use. 
    Id.
     subdiv. (iii)(C). 32 And finally, to determine whether
    services are significant personal services, all of the relevant facts and
    circumstances are considered, including the frequency with which the
    services are provided, the type and amount of labor required to perform
    the services, and the value of the services relative to the amount charged
    for the use of the property. Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(iv)(A).
    Mr. Rogerson claims that his yacht activities qualify for both
    exceptions. We disagree.
    a.      Seven Days or Less Exception
    As to the first exception, Mr. Rogerson has not requested any
    findings of fact or provided any evidence to allow us to conclude that his
    yacht activities involved charters of seven days or less during the years
    at issue or any other year. Mr. Rogerson claims that “[n]either TOTO
    nor Falcon Lair was available to be ‘rented’ for weeks at a time” and that
    “the Yacht Charter Activity was intended to provide short-term use for
    day trips and other short-term excursions.” Pet’r’s Simultaneous
    Opening Br. 78. But regardless of these plans, no customers chartered
    the yachts during 2014, 2015, or 2016. And unlike the affirmative rule
    for defining a rental activity, which considers a taxpayer’s intended or
    expected use of property, the exceptions to that rule turn on what
    actually happened during the taxable year. Compare Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(i) (allowing consideration of potential customer use and
    expected income in identifying a rental activity), with 
    id.
     subdiv. (ii)(A)
    and (B) (establishing exceptions based on the “average period of
    customer use”), and 
    Treas. Reg. § 1.469-1
    (e)(3)(iii)(C) and (D)
    32 The rules are slightly more nuanced with respect to activities involving
    multiple classes of property, but those nuances are irrelevant for purposes of our
    analysis. See 
    Treas. Reg. § 1.469-1
    (e)(3)(iii)(A) and (B).
    32
    [*32] (calculating the average period of customer use based on actual
    customer activity). Without any customer use, it is impossible to
    establish (as required by the regulations) the average period of customer
    use for the yachts. Accordingly, Mr. Rogerson fails to qualify for the first
    exception. 33
    b.      30-day Exception
    Mr. Rogerson’s argument for the second exception falls short for
    the same reason. A claim in Mr. Rogerson’s brief that “[n]o charter
    would have been for more than 30 days,” Pet’r’s Simultaneous Opening
    Br. 79, is not evidence, and again, the absence of any actual customer
    use of the yachts precludes us from determining that the average period
    of customer use was 30 days or less. Similarly, the fact that the TOTO
    and the Falcon Lair each had crews that conceivably could have
    provided services does not establish that significant personal services
    were in fact provided to customers. See Temp. 
    Treas. Reg. § 1.469
    -
    1T(e)(3)(ii). Mr. Rogerson has requested no findings of fact nor produced
    any evidence about the kinds of services that crew members could or
    would provide to customers. And, more to the point, we know that no
    services were provided during the years at issue because the yachts were
    not chartered.
    Mr. Rogerson has failed to establish that his yacht activities
    qualify under the exceptions provided in the temporary regulations. The
    activities therefore constituted rental activities and were per se passive
    during the years at issue. 34 See I.R.C. § 469(c)(2), (4), (j)(8); Temp. 
    Treas. Reg. § 1.469
    -1T(e)(3)(i). 35
    33 We express no view as to the outcome of a case in which the evidence
    demonstrates that one or more of the exceptions under Temporary Treasury
    Regulation § 1.469-1T(e)(3)(ii) had been met in prior years, but not during the years at
    issue. This case does not present such a scenario.
    34Mr. Rogerson’s argument that he materially participated in the yacht
    activity would not change this conclusion, because rental activities are considered
    passive without regard to the taxpayer’s level of participation. I.R.C. § 469(c)(2), (4).
    We therefore need not address it further.
    35 On January 12, 2021, just over two months before the trial of this case was
    scheduled to begin in March, the Commissioner filed a Motion for Leave to File an
    Amendment to Answer to further allege under section 183 that Mr. Rogerson did not
    engage in his yacht activities with an objective of realizing a profit. Mr. Rogerson
    objected on the ground that permitting the amendment would prejudice his
    preparation for trial. He further argued that the amendment came too late and
    33
    [*33] III.      Accuracy-Related Penalties
    Lastly we must determine whether the section 6662 penalties the
    Commissioner determined in the notice of deficiency properly apply.
    The Commissioner bears the burden of production with respect to
    an individual taxpayer’s liability for a penalty and is required to present
    sufficient evidence showing that the penalty is appropriate. I.R.C.
    § 7491(c); Higbee v. Commissioner, 
    116 T.C. 438
    , 446–47 (2001). To meet
    this burden for a penalty under section 6662(a), the Commissioner must
    show that he complied with the procedural requirements of section
    6751(b)(1). See I.R.C. § 7491(c); Frost v. Commissioner, 
    154 T.C. 23
    , 34
    (2020). Once the Commissioner satisfies his burden of production, the
    taxpayer bears the burden of proving that the Commissioner’s penalty
    determination is incorrect or that the taxpayer has an affirmative
    defense such as reasonable cause. See Rule 142(a); Higbee, 
    116 T.C. at 446
    –47.
    Because we conclude that Mr. Rogerson had reasonable cause and
    relied in good faith on his adviser Mr. Chang in connection with the
    preparation of the 2014 to 2016 returns, we conclude that the penalties
    do not apply.
    A.      Section 6662(a) Penalty
    Section 6662(a) and (b)(1) and (2) imposes a penalty equal to 20%
    of the portion of an underpayment of tax required to be shown on a
    taxpayer’s return that is attributable to “[n]egligence or disregard of
    essentially was designed to permit the Commissioner a “do-over” after the period for
    discovery had already run. After holding a status conference with the parties, the
    Court advised them that it intended to deny the Motion. The Court observed that
    permitting amendment would not be in the interest of justice in light of the procedural
    posture of the case, the timing of the request after the close of discovery, and the
    prejudice to Mr. Rogerson in preparing for trial on the existing issues, while at the
    same time being required to prepare for trial a different issue that turned on much
    different evidence. The Court also noted that the notice of deficiency specifically
    highlighted the issue sought to be challenged in the proposed amendment, while
    observing that the Commissioner had decided not to raise the issue in light of a prior
    resolution by IRS Appeals. The Court also advised the parties that the Motion would
    be formally addressed in any opinion issued in the case. Trial of this case was later
    postponed from March to May at the parties’ request. Upon further consideration, for
    the reasons noted above, we will deny the Commissioner’s Motion. See Waterman v.
    Commissioner, 
    91 T.C. 344
    , 349–51 (1988) (leave to amend may be denied upon a
    showing of prejudice to the petitioner); Law v. Commissioner, 
    84 T.C. 985
    , 990 (1985)
    (whether leave will be granted is a question falling within the discretion of the Court).
    34
    [*34] rules or regulations” and/or a “substantial understatement of
    income tax.” Negligence includes “any failure to make a reasonable
    attempt to comply with the provisions of this title.” I.R.C. § 6662(c). An
    understatement of income tax is a “substantial understatement” if it
    exceeds the greater of 10% of the tax required to be shown on the return
    or $5,000. I.R.C. § 6662(d)(1)(A). The Commissioner here has asserted
    section 6662(a) penalties on the basis of both negligence and substantial
    understatement.
    B.      Reasonable Cause and Good Faith
    A taxpayer may avoid a section 6662(a) penalty by showing that
    there was reasonable cause for the underpayment and that the taxpayer
    acted in good faith. I.R.C. § 6664(c)(1). The determination of whether a
    taxpayer acted with reasonable cause and in good faith is made on a
    case-by-case basis, taking into account all of the pertinent facts and
    circumstances, including the taxpayer’s efforts to assess the proper tax
    liability and the taxpayer’s knowledge, experience, and education.
    
    Treas. Reg. § 1.6664-4
    (b)(1).
    Mr. Rogerson contends, among other things, that he had
    reasonable cause for the position he took on his tax returns because he
    reasonably relied on Mr. Chang’s advice. 36 Reasonable reliance on
    professional advice may constitute reasonable cause and good faith if
    the taxpayer proves, by a preponderance of the evidence, that (1) the
    adviser was a competent professional with sufficient expertise to justify
    reliance, (2) the taxpayer provided necessary and accurate information
    to the adviser, and (3) the taxpayer actually relied in good faith on the
    adviser’s judgment. See Alt. Health Care Advocates v. Commissioner,
    
    151 T.C. 225
    , 246 (2018); Neonatology Assocs., P.A. v. Commissioner, 
    115 T.C. 43
    , 99 (2000), aff’d, 
    299 F.3d 221
     (3d Cir. 2002); see also Charlotte’s
    Office Boutique, Inc. v. Commissioner, 
    425 F.3d 1203
    , 1212 n.8 (9th Cir.
    2005) (quoting the three-pronged test with approval), aff’g 
    T.C. Memo. 2004-43
     and 
    121 T.C. 89
     (2003).
    36 One of Mr. Rogerson’s alternative arguments is that the penalties were not
    timely approved under section 6751(b). The U.S. Court of Appeals for the Ninth Circuit
    recently considered this question in the context of an assessable penalty under section
    6707A, which, as the Ninth Circuit noted, is not subject to the Code’s deficiency
    procedures. See Laidlaw’s Harley Davidson Sales, Inc. v. Commissioner, 
    29 F.4th 1066
    , 1071 (9th Cir. 2022), rev’g and remanding 
    154 T.C. 68
     (2020). In light of our
    determination that Mr. Rogerson is not liable for the section 6662(a) penalties, we need
    not consider the penalty approval issue.
    35
    [*35]        1.     Competent Tax Adviser
    There is no precise threshold of competence that a tax adviser
    must have to justify a taxpayer’s reliance. Rather, our practical test
    looks for expertise in the context of the facts of each case. CNT Inv’rs,
    LLC v. Commissioner, 
    144 T.C. 161
    , 224 (2015); see also 106 Ltd. v.
    Commissioner, 
    136 T.C. 67
    , 77 (2011) (finding the taxpayer’s longtime
    attorney and accounting firm, who “would have appeared competent to
    a layman,” and especially so to the taxpayer, had adequate expertise),
    aff’d, 
    684 F.3d 84
     (D.C. Cir. 2012); Neonatology Assocs., P.A., 
    115 T.C. at 99
     (holding that an insurance agent who did not claim to be a tax
    professional and had a direct financial interest in the transaction at
    issue lacked sufficient expertise to advise on the tax consequences of
    complex life insurance transactions).
    Applying this practical test, we find that Mr. Chang was a
    competent tax adviser with sufficient expertise to justify reliance. Mr.
    Chang was a professionally licensed and experienced tax return
    preparer with his own practice. He knew Mr. Rogerson’s personal and
    business affairs from his long relationship with Mr. Rogerson and his
    companies. There is no indication in the record that Mr. Rogerson had
    any reason to doubt Mr. Chang’s competence to provide the advice he
    sought.
    2.     Provision of Information
    To meet the second requirement of reasonable reliance, the
    taxpayer must provide necessary and accurate information to the
    adviser. See Alt. Health Care Advocates, 
    151 T.C. at 246
    . Additionally,
    the taxpayer cannot “fail[] to disclose a fact that [he] knows, or
    reasonably should know, to be relevant to the proper tax treatment of
    an item.” 
    Treas. Reg. § 1.6664-4
    (c)(1)(i). But a taxpayer is not obligated
    to share details that a reasonably prudent taxpayer would not know, or
    that he neither would know nor reasonably should know are relevant.
    CNT Inv’rs, LLC, 
    144 T.C. at 228
    .
    We conclude that Mr. Rogerson provided Mr. Chang with
    necessary and accurate information during their discussions about Mr.
    Rogerson’s activities and the positions taken on Mr. Rogerson’s returns.
    Mr. Chang was Mr. Rogerson’s long-time adviser and demonstrated his
    familiarity with Mr. Rogerson’s affairs at trial. Additionally, Mr. Chang
    and Mr. Rogerson both credibly testified that Mr. Rogerson provided Mr.
    Chang with information regarding his level of involvement (generally in
    36
    [*36] the form of hours estimates) in each of his activities each year for
    purposes of applying the passive loss rules. 37 And while ultimately we
    resolve this case on grounds unrelated to the number of hours Mr.
    Rogerson spent on his various activities during the years at issue, we do
    not believe that Mr. Rogerson knew or reasonably should have known
    that factors other than his hours were relevant to the treatment of his
    activities. See 
    id.
     Mr. Chang, an experienced tax professional, focused
    his analysis and advice on Mr. Rogerson’s activity levels, and Mr.
    Rogerson had no reason to question that approach. As the Supreme
    Court has said,
    When an accountant or attorney advises a taxpayer
    on a matter of tax law, such as whether a liability exists, it
    is reasonable for the taxpayer to rely on that advice. Most
    taxpayers are not competent to discern error in the
    substantive advice of an accountant or attorney. To require
    the taxpayer to challenge the attorney, to seek a “second
    opinion,” or to try to monitor counsel on the provisions of
    the Code himself would nullify the very purpose of seeking
    the advice of a presumed expert in the first place. See
    Haywood Lumber [& Mining Co. v. Commissioner, 
    178 F.2d 769
    , 771 (2d Cir. 1950), modifying 
    12 T.C. 735
     (1949)].
    “Ordinary business care and prudence” do not demand
    such actions.
    United States v. Boyle, 
    469 U.S. 241
    , 251 (1985).
    3.      Good Faith Reliance on Advice
    The last requirement is that a taxpayer must have actually
    received advice and relied upon it in good faith. Neonatology Assocs.,
    P.A., 
    115 T.C. at 99
    . Advice is “any communication, including the
    opinion of a professional tax advisor, setting forth the analysis or
    conclusion of a person, other than the taxpayer, provided to (or for the
    37 The Commissioner argues that Mr. Rogerson’s failure to keep logs of his
    hours was negligent, but the Commissioner’s own regulations state that logs are not
    required. See Temp. 
    Treas. Reg. § 1.469
    -5T(f)(4). Moreover, as the extensive
    discussion in Opinion Part II demonstrates, we do not resolve this case on the basis of
    hours Mr. Rogerson spent on each activity during the years at issue. We further note
    that this Court has found that a taxpayer acted with reasonable cause and good faith
    when a deficiency is the result of an issue of first impression and the taxpayer’s
    position is reasonably debatable. See Williams v. Commissioner, 
    123 T.C. 144
    , 153–54
    (2004).
    37
    [*37] benefit of) the taxpayer and on which the taxpayer relies, directly
    or indirectly.” 
    Treas. Reg. § 1.6664-4
    (c)(2).
    Mr. Chang credibly testified at trial that he provided Mr.
    Rogerson with advice regarding the proper reporting of his activities
    under the passive loss rules for 2014, 2015, and 2016 and that Mr.
    Rogerson’s reporting on his personal income tax returns was consistent
    with that advice. Mr. Rogerson likewise credibly testified that he
    received advice from Mr. Chang regarding the application of the passive
    loss rules to his activities and that he followed that advice. We believe
    their testimony and conclude that Mr. Rogerson reasonably relied on
    Mr. Chang’s advice.
    We note that we find credible Mr. Rogerson’s reliance upon Mr.
    Chang’s advice in part because Mr. Chang had been preparing Mr.
    Rogerson’s individual returns and the Rogerson companies’ returns for
    over a decade. See Schwalbach v. Commissioner, 
    111 T.C. 215
    , 230–31
    (1998) (finding reasonable reliance where taxpayers consulted their
    long-time business and tax adviser, he advised them on what he believed
    was the correct reporting position, and they followed his advice). And
    Mr. Chang demonstrated his knowledge of the returns and the facts
    underlying them at trial. That Mr. Rogerson is a well-educated,
    sophisticated businessman does not preclude him from relying on Mr.
    Chang, his long-term tax adviser, to advise him regarding technical tax
    matters and prepare his returns. See Boyle, 
    469 U.S. at 251
    .
    In light of these considerations, taking into account all of the facts
    and circumstances, we hold that Mr. Rogerson is not liable for the
    section 6662 accuracy-related penalties.
    IV.   Conclusion
    For the reasons described above, we conclude that Mr. Rogerson
    materially participated in RAEG for the tax years 2014, 2015, and 2016,
    with the result that income from that activity must be treated as
    nonpassive in each of those years.          We further conclude that
    Mr. Rogerson’s yacht activities during the same years were per se
    passive as rental activities and therefore that the income associated
    with those activities must likewise be passive. Finally, we conclude that
    the penalties the Commissioner determined in the notice of deficiency
    do not apply.
    38
    [*38] To reflect the foregoing,
    An appropriate order will be issued, and decision will be entered
    under Rule 155.