MATERIAL PARTICIPATION · TEST 3 OF 7
The 100-Hour Material Participation Test
Participate more than 100 hours in the activity during the year — and participate at least as much as any other individual — and you materially participate. Lower bar than the 500-hour test, but with a catch: nobody else can outwork you.
What the test requires
Under Reg. §1.469-5T(a)(3), two conditions must both hold: (1) your participation exceeds 100 hours during the tax year, and (2) no other individual participates more than you do. Note the comparison is to other individuals — but be careful, because significant participation by employees or managers can still make this test hard to defend in practice. Miss either condition and the test fails.
Who this test fits
This test fits part-time but genuinely involved owners: the STR host who spends most weekends on the property while a cleaner handles turnovers, or the landlord who does all leasing and maintenance decisions for a small portfolio. It is the natural fallback when 500 hours is unrealistic but you are clearly the most active person in the activity. If a property manager or co-host does more than you, look elsewhere.
What counts as participation
The same participation rules apply as elsewhere: real work in the activity counts — repairs, guest and tenant relations, bookkeeping tied to operations, managing the people who do the work. Pure investor activities generally do not count. Because the test is comparative, keep an honest tally of what others do: the cleaner, the handyman, the co-host. Your 120 hours only win if nobody else tops them.
How to document it
Log contemporaneously — every entry in PropHours carries a timestamp, property, task and duration, which is exactly what a comparative test needs. Attach evidence (receipts, photos, messages) and import your calendar so a second source corroborates the pattern. At year end, export the report: your total next to a realistic accounting of anyone else's involvement is the exhibit this test requires.
Common mistakes
Forgetting the comparison. 150 hours means nothing if your co-host logged 200. Both conditions must hold.
Counting the manager's hours as yours. Only work you performed counts toward your total.
Reconstructing from memory. A comparative test invites skepticism; contemporaneous entries with evidence win.
Mixing properties without a grouping election. Each activity is tested separately unless grouped.
Is exactly 100 hours enough?
No — the test requires more than 100 hours. Log with margin; 101 hours on paper with no evidence is a weak position.
What if my spouse participates more than me?
Spousal participation is generally attributed to you under §469(h)(5), so a spouse's hours typically help rather than hurt. The comparison that matters is against other individuals outside that attribution.
Can employees' hours disqualify me?
The regulation compares your participation to other individuals. In practice, heavy employee or manager involvement makes the claim harder to defend — document the full picture and discuss it with your CPA.
What if someone else does slightly more than me?
Then this test fails, but others may still work — for example the facts-and-circumstances test or the significant participation activity test.
The other six tests
Browse all material participation guides.
Material participation requires meeting only one of seven tests: the 500-hour test, the substantially-all test, the significant participation activity test, the 5-of-10-year test, the personal service activity test, and the facts-and-circumstances test. Also see our free STR tax savings calculator.
This page explains the 100-hour test under Reg. §1.469-5T(a)(3) in general terms and is not tax advice. Whether you materially participate depends on your facts; review IRS Publication 925 and consult a qualified tax professional. PropHours records the work you log — it does not determine tax eligibility.