One of the key tax considerations for short-term rental owners is whether they "materially participate" in the management of their property. Material participation status can affect how the IRS treats rental losses and whether those losses can offset other income. Here's what you need to know — and why tracking your hours matters.

Why Material Participation Matters

The IRS generally treats rental real estate income as "passive" under IRC Section 469 (Publication 925). Passive losses can typically only offset passive income, limiting their usefulness if your primary income comes from a W-2 job.

However, short-term rentals with average stays under 7 days may be treated differently. If the owner materially participates, losses from the STR activity may be classified as non-passive — potentially allowing them to offset other types of income. Whether this applies to your situation depends on multiple IRS tests and factors; consult your CPA.

The 100-Hour Test

The IRS outlines several material participation tests in Publication 925. One commonly referenced test for STR owners requires spending more than 100 hours on the activity during the tax year, with no other individual spending more hours than the owner.

This means if you hire a property manager who works more hours on your property than you do, this particular test may not be met — even if you personally exceeded 100 hours.

Activities That May Count

Based on IRS guidance, activities that may count toward material participation hours generally include: guest communication and booking management, property maintenance and repairs, cleaning coordination and quality checks, purchasing and restocking supplies, marketing and listing optimization, financial record-keeping, researching local regulations, and travel to the property for management purposes.

What typically does NOT count: investment analysis, time spent as a passive investor, or activities not directly related to the rental operations.

Documentation Is Critical

The IRS expects a "contemporaneous log" — meaning you document your hours as they happen, not retroactively at year end. Your log should include the date, a description of the activity, and the time spent. The IRS can challenge material participation claims, and a detailed log is your primary defense.

How DeductFlow Helps

DeductFlow includes an active hours tracker built specifically for this purpose. Log hours as you go, see your running total toward the threshold, and export your hours log alongside your expense records and mileage when your CPA needs the full picture.