Can I rebuild my real estate hours during an audit?

    The claim: “You can rebuild your real estate hours during an audit.”

    Partly true: only if records from the year back it up

    Partly. Temp. Treas. Reg. §1.469-5T(f)(4) lets you prove participation by any reasonable means, including appointment books, calendars, or narrative summaries, and it does not require daily time logs. But the Tax Court has repeatedly refused to accept a post-event ballpark guesstimate. A summary prepared during an audit can help only when it is corroborated by records created during the year.

    Reviewed by Ebot Mbi, CPA, EA · Last reviewed · Law and figures current as of September 17, 2026

    Key takeaways

    • Real estate professional status under IRC §469(c)(7) requires more than 750 hours and more than half of your personal services in real property trades or businesses.
    • Temp. Treas. Reg. §1.469-5T(f)(4) accepts any reasonable means of proof; contemporaneous daily logs are not strictly required.
    • In Moss v. Commissioner, 135 T.C. 365 (2010), the Tax Court said it is not required to accept a post-event ballpark guesstimate.
    • Reconstructions that tie each entry to dated emails, invoices, calendars, and texts are far stronger than round-number estimates.
    • Keeping a simple log during the year is the most reliable way to support the hours.

    Where the claim comes from

    Real estate professional status can make rental losses nonpassive, so it is valuable and frequently examined. Some taxpayers claim the status without tracking hours and assume they can build a spreadsheet later if the IRS asks.

    The regulation's flexible language encourages that belief. It does allow reasonable proof other than daily logs. What it does not do is make an after-the-fact estimate credible on its own.

    What the law actually says

    IRC §469(c)(7)(B) treats a taxpayer as a real estate professional only if more than one-half of the personal services the taxpayer performs in trades or businesses during the year are performed in real property trades or businesses in which the taxpayer materially participates, and the taxpayer performs more than 750 hours of services during the year in those real property trades or businesses. You must also materially participate in the rental activities themselves, either separately or under an aggregation election.

    Temp. Treas. Reg. §1.469-5T(f)(4) governs proof. It says the extent of participation may be established by any reasonable means, that contemporaneous daily time reports or logs are not required if participation can be established by other reasonable means, and that reasonable means may include identifying the services performed over a period and the approximate hours, based on appointment books, calendars, or narrative summaries.

    Courts read that language together with the taxpayer's burden of proof. In Moss v. Commissioner, 135 T.C. 365 (2010), the Tax Court stated that although the regulation is flexible, it is not required to accept a post-event ballpark guesstimate, and later cases have applied that principle to reconstructed logs that were not supported by evidence from the year. IRC §6001 requires records sufficient to support what you report, and an unsupported claim can also draw the 20% accuracy-related penalty under IRC §6662.

    What is true and what is not

    It is true that you do not need a formal timesheet for every day. A narrative summary prepared later can be acceptable when each entry is tied to evidence created at the time, such as calendar invites, property management emails, contractor invoices, tenant texts, mileage records, and bank records.

    It is not true that a spreadsheet built for the audit, with round numbers and generic task descriptions, will carry the claim. Courts look for specifics: dates, properties, tasks, and time, and they compare the claimed hours with the rest of your schedule, including any full-time job.

    • Stronger: a calendar kept during the year, with property, task, and time for each entry.
    • Acceptable with support: a later narrative summary tied to dated emails, invoices, and texts.
    • Weak: round-number monthly estimates prepared after the IRS contact.
    • Weak: hours that conflict with a full-time work schedule or travel records.

    What to do instead

    Start a log on January 1 and update it weekly. Record the date, property, task, and time, and save supporting items in the same folder. Count only work that qualifies; investor-type activities, such as reviewing financial statements, generally do not count unless you are directly involved in day-to-day management or operations.

    If you are already under examination, do not invent entries. Build any summary from dated source records, note where each entry comes from, and be candid about gaps. A smaller, well-supported number is more useful than a larger unsupported one.

    How ebotCPA helps

    We test your hours against both §469(c)(7) requirements, set up a practical logging routine, and, if you are under examination, organize the evidence you actually have into a supportable presentation.

    Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.

    Same hours, different evidence

    Assumptions: Tax year 2026; single taxpayer with no other job, who works only in real property trades or businesses and materially participates in them.; The taxpayer actually worked 800 hours on the rentals during the year.; Taxpayer A kept a calendar during the year listing date, property, task, and time. Taxpayer B prepared a spreadsheet during the audit with estimated monthly totals and no supporting documents.; Outcome depends on the examiner's or court's evaluation; the rows show the likely strength of each position, not a predicted outcome.

    Hours threshold under §469(c)(7)(B)(ii)More than 750
    Taxpayer A: hours supported by records from the year800
    Taxpayer A: position on the hours testWell supported
    Taxpayer B: hours supported by records from the yearUnknown
    Taxpayer B: position on the hours testAt high risk of disallowance

    Under these assumptions, the same 800 hours are well supported with a calendar kept during the year and poorly supported with an estimate built during the audit.

    Illustration only; not a projection of your results.

    Primary sources

    1. Temp. Treas. Reg. §1.469-5T(f)(4). Methods of proof for participation.
      “The extent of an individual's participation in an activity may be established by any reasonable means. Contemporaneous daily time reports, logs, or similar documents are not required if the extent of such participation may be established by other reasonable means.”

      Allows reasonable proof of hours, including calendars and narrative summaries.

    2. 26 U.S.C. §469(c)(7)(B). Real estate professional requirements.
      “such taxpayer performs more than 750 hours of services during the taxable year in real property trades or businesses in which the taxpayer materially participates.”

      Requires more than 750 hours and more than half of personal services in real property trades or businesses.

    3. Moss v. Commissioner, 135 T.C. 365 (2010). Post-event estimates of participation.

      The Tax Court stated that the regulation's flexibility does not require it to accept a post-event ballpark guesstimate of hours.

    4. 26 U.S.C. §6001. Records requirement.

      Requires records sufficient to support items reported on a return.

    5. 26 U.S.C. §6662(a). Accuracy-related penalty.

      Imposes a 20% penalty on underpayments from negligence or substantial understatements, which can apply to unsupported loss claims.

    Frequently asked questions

    Do I need a daily time log for real estate professional status?

    Not strictly. Temp. Treas. Reg. §1.469-5T(f)(4) accepts any reasonable means, but a log or calendar kept during the year is the most reliable evidence.

    Can I use my calendar and emails to reconstruct hours?

    Yes, those records can support a narrative summary. Tie each entry to a dated source and avoid round-number estimates.

    Is exactly 750 hours enough?

    No. The statute requires more than 750 hours, plus more than half of your total working hours in real property trades or businesses.

    What activities count toward the hours?

    Work you perform in real property trades or businesses in which you materially participate. Investor-type activities generally do not count unless you are directly involved in day-to-day management or operations.

    Have facts like these?

    Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.

    General information, not tax, legal, or investment advice for your situation. Results depend on your facts; no outcome is guaranteed. Reading this page does not create a client relationship.

    ebotCPA PLLC · Ebot Mbi, CPA (Texas License #127163), Enrolled Agent · 4425 W Airport Fwy, Ste 595, Irving, TX 75062

    Last updated: September 12, 2026