A well-kept time log is what separates a real estate professional who keeps their deductions from one who loses them in audit. Not because the hours were fake, but because the entries lacked the right details. The IRS does not reject logs for being too thorough. They reject them for being too vague.
So what exactly goes on each line? That question has a real answer, and it comes straight from the Tax Court.
TL;DR: Every REPS log entry needs a specific date, the property or activity you worked on, and a clear description of the task you performed. Start and end times are not required by law, but vague or missing details will get entries thrown out. An auditor will not dig for evidence on your behalf. They will simply discard what they cannot verify. Log in real time, be specific, and your hours will hold up.
Written by the REPS Time team, real estate investors who track Real Estate Professional Status and short-term rental material-participation hours, grounded in IRC §469(c)(7) and current Treasury guidance.
The Core Fields Every REPS Log Entry Must Include
Start here, because this is the answer. Each log entry needs:
- Date — the calendar date the work occurred, not the week or the month.
- Property or activity — which rental, which business activity, which real property trade or business.
- Task description — what you actually did, in enough detail that it is self-explanatory.
That is the floor. Not a suggestion, a floor. Courts have rejected logs missing any one of these. Let's walk through why each one matters, because the reasons are practical, not bureaucratic.
Date
The IRS wants to confirm your hours are spread across a real year of work, not reconstructed after the fact. A log that says "Week of March 10" instead of "March 12" is already vulnerable. Specific dates also let an auditor cross-reference your calendar, your phone records, your flight history, or your contractor invoices. If your log says you were at the property on a day your credit card places you across the country, that is a problem.
Property or Activity
Under IRC §469(c)(7), your hours must be in real property trades or businesses in which you materially participate. That means you have to show which activity the hours belong to. "Rental management" is not enough if you own three properties. Tie every entry to a specific address or activity name. You do not need to set up formal unit numbers in your log, but noting which unit you worked on in the description is a smart habit. It adds clarity without adding burden.
If you have made a grouping election under IRC §469(c)(7)(A), you still need to identify what you worked on. The election changes how losses are tested, not how you record time.
Task Description
This is where most logs fall apart. "Worked on property" or "management duties" tells the IRS nothing. What did you do? Screened a tenant application. Fixed a leaking faucet. Walked the unit after move-out. Coordinated with a roofer. Called a plumber and waited on-site for two hours.
Treas. Reg. §1.469-5T(f)(2)(ii) specifically excludes investor-type activities, like reviewing financial statements, attending meetings as a passive investor, or arranging financing where you are not involved in day-to-day operations. If your log is full of vague entries, the IRS cannot tell whether you were doing qualifying work or just reading a rent statement. Make the task unmistakable.
What About Start and End Times?
Here is the nuance most people miss. The IRS does not legally require a start time and end time on every entry. An auditor is not going to dig through your phone records hunting for proof you started at 10:02 AM.
But here is what auditors will do: they will throw out entries that are too vague to verify. Rounded hours like "3 hours" or "half a day" with no other context have been rejected repeatedly by the Tax Court. In Penley v. Commissioner, the court threw out a log with rounded hours and no times of day. In Almquist v. Commissioner, the court rejected hours reconstructed from memory after the audit began, calling them a "ballpark guesstimate" and added a 20% accuracy penalty.
So you do not have to write "10:00 AM to 12:15 PM" on every line. But you do need enough information that the entry is specific and credible. If adding a time range helps you be more precise and honest about how long something took, do it. Many people find that logging times naturally produces better, more accurate entries. That is why REPS Time captures them. But the hard requirement is specificity, not clock times specifically.
What a Good Entry Actually Looks Like: A Worked Example
Here is a concrete before-and-after to make this tangible.
Bad entry (the kind that gets thrown out):
March 2025, property management, 4 hours
Good entry (the kind that survives):
March 14, 2025 | 123 Maple Street, Unit B | Coordinated roof repair: met contractor on-site to review scope of work, reviewed bid, approved materials | 2 hrs 15 min
One of those entries is defensible. The other is an invitation for an auditor to disallow every hour you claimed.
Now multiply that across a year. Say you are trying to hit the 750-hour test under IRC §469(c)(7). You have three rental properties and a self-managed short-term rental. Over 12 months, you log 760 hours. On paper, you qualify. But if 200 of those hours are logged as "property management, 2 hours" with no task detail, you have handed the IRS a clean reason to knock you below 750.
At a 37% marginal rate and $60,000 in rental losses you are trying to deduct against W-2 income, that is a $22,200 swing. $22,200 is not a rounding error. It is the cost of sloppy record-keeping.
What the IRS Rejects and Why
A few patterns show up consistently in Tax Court cases, and they are worth knowing cold.
After-the-fact reconstruction. The word "contemporaneous" in IRS guidance means you record it when it happens, not when you get audited. A log built from memory months or years later carries almost no weight, even if the taxpayer is honest. Almquist is the clearest example. The court did not question the taxpayer's sincerity. It questioned the reliability of recalled estimates. Honest recollection is not the same as a contemporaneous record.
"On call" time. The Tax Court in Moss v. Commissioner ruled that simply being available to handle issues does not count as participated time. If your phone did not ring and you did not do anything, that is not a loggable hour. Log actual work, not standby time.
Investor activities. Reading your own financial statements, researching the real estate market, or attending passive investor meetings does not count under Treas. Reg. §1.469-5T(f)(2)(ii). These feel like real estate work. They are not qualifying hours for the 750-hour test or for material participation.
Duplicated or implausible hours. If your log shows 14 hours on a Tuesday that you also spent at a 9-to-5 job, an auditor will notice. Cross-checking employment records against claimed real estate hours is routine. For more on navigating this if you work full time, see our piece on REPS with a full-time job.
A Quick Comparison: Entries That Survive vs. Entries That Don't
| Element | Survives Audit | Gets Rejected |
|---|---|---|
| Date | Specific calendar date | "Week of March 10" or month only |
| Property | Full address or named activity | "My rental" or "STR" |
| Task | "Screened tenant application, called references" | "Management" or "property work" |
| Duration | Specific time described in context | "2 hours" with no other detail |
| Activities | Repairs, leasing, maintenance, contractor oversight | Reviewing statements, arranging financing passively |
How Many Entries Do You Actually Need?
As many as the days you work. There is no minimum number of entries, but there is a minimum level of detail per entry. A 750-hour year worked over 200 active days averages about 3.75 hours per day. Each of those days should have at least one entry, often more if you switched between tasks or properties.
Some days will have a single 20-minute entry. Others will have five entries across two properties. That variation is realistic and good. A log where every entry is exactly two hours long on exactly the same task looks fabricated, because it probably is.
For the full picture of what contemporaneous really means in the IRS's eyes, see what is a contemporaneous log. And if you want a ready-to-use format, the real estate professional time log template is built around these exact fields.
One More Thing: The Grouping Election Does Not Change Your Logging Obligation
Some taxpayers make the grouping election under IRC §469(c)(7)(A) and assume they only need to track total hours across all properties. That is a partial truth. The election lets you aggregate your rental activities into one for purposes of the material-participation test. But you still need to log what you did, where you did it, and when. Aggregation is a tax computation concept, not a record-keeping shortcut. Log by property. The election takes care of the math at tax time.
For more on how the grouping election interacts with your documentation, see the material participation contemporaneous log guide.
The Practical Takeaway
Log in real time. Log every entry with a specific date, a specific property, and a specific task. Be descriptive enough that a stranger could read your entry and know exactly what you did. Do not round. Do not reconstruct. Do not log activities the regulations exclude.
If you are doing this manually, set a daily habit. If you want a structured system that captures the required fields on every entry and creates an audit-ready export, REPS Time is built for exactly that. You can log from your phone right after a contractor call, add a note about which unit you worked on, and have a clean record waiting if the IRS ever comes asking.
Your hours might be legitimate. Make sure your log proves it.
Frequently Asked Questions
Does a daily summary entry count as a contemporaneous log? It depends on the detail. A daily summary with a specific date, the property you worked on, and the exact tasks performed is generally acceptable. A daily summary that just says "property management, 3 hours" is not. The key is whether a stranger could reconstruct what you did from the entry alone.
Can I use a calendar app, email, or text messages as supporting evidence? Yes, and you should. Calendars, emails, contractor texts, and invoices are valuable corroboration. But corroboration is not a substitute for a dedicated time log. Tax Court cases have shown that scattered supporting documents without a central, contemporaneous log are harder to defend than a clean log backed by those same documents.
What happens if I forgot to log some days earlier in the year? If a gap is small and recent, you may be able to reconstruct it from calendars, emails, or contractor records and note clearly in the log that it is a reconstruction. But the more reconstruction involved, the weaker the log. Almquist v. Commissioner is a clear warning about relying on memory. For a practical recovery strategy, see forgot to log REPS hours.
Do travel hours count as part of the logged activity time? Travel directly related to your rental activity, like driving to the property to oversee a repair, can count. Pure commute-style travel may not. The activity you are traveling to must qualify, and the travel must be integral to it, not incidental. See our article on whether travel time counts for REPS for the full breakdown.
Is there a specific IRS form or format required for the log? No. The IRS does not mandate a specific format. What it requires is that the record be contemporaneous and contain sufficient detail to verify the hours and the nature of the activities. A spreadsheet, a dedicated app, or even a paper notebook can work, as long as every entry meets the core standards described in this article.
Sources
- IRC §469(c)(7) — Real estate professional exception to passive activity loss rules
- Treas. Reg. §1.469-5T — Seven material-participation tests, including exclusion of investor activities
- Treas. Reg. §1.469-9 — Rules for real estate professionals
- IRS Publication 925 — Passive Activity and At-Risk Rules
- Rev. Proc. 2011-34 — Late relief for grouping elections
- Almquist v. Commissioner, T.C. Memo. 2014-184 — After-the-fact log rejected, 20% accuracy penalty
- Penley v. Commissioner, T.C. Memo. 2008-260 — Rounded hours and no clock times rejected
- Moss v. Commissioner, T.C. Memo. 2011-208 — "On call" time does not count
This article is for educational purposes only and is not tax or legal advice. Consult a qualified CPA familiar with real estate. Agents Invest LLC is not a CPA firm, law firm, or registered tax preparer.
