Most buyers are told they need real estate professional status to use rental losses against their W2 income. For a true short-term rental, that is not the rule. Here is the one that applies, and the December 31 deadline that decides which year you get it.
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If the average guest stay is seven days or less, the IRS does not treat your property as a rental activity at all. Rentals are passive by default, which is why the losses normally get trapped and carried forward. Short-term rentals are not.
The math: total rented nights divided by separate bookings. 200 nights across 60 bookings averages 3.3 days and qualifies. The same 200 nights across 25 bookings averages 8 and does not.
A few thirty day stays in the slow season can push your average over seven and cost you the deduction for the entire year. Most people find out when they file.
Out of reach with a full-time job.
Reachable for most owners.
Different tests. Same destination.
Clearing seven days gets you to the door. Material participation gets you through it. Most owners qualify one of two ways. More than 500 hours on the property during the year. Or more than 100 hours and more hours than anyone else, which includes your cleaner, your co-host and your property manager.
That second one is how most people qualify, and it is also how people lose it. Hire full service management and they can quietly outlog you.
Write the hours down as you go. Reconstructed logs lose in Tax Court.
REPS is the long-term rental door. It takes more than 750 hours in real property trades plus more than half of all your working time, which is not happening alongside a full time job. The short-term rule asks for none of it.
One exception worth knowing. If a spouse works full time in real estate, REPS goes from irrelevant to very live and changes the whole plan.
Cost segregation is what creates a loss worth using. It breaks the building into 5, 7 and 15 year components, appliances, flooring, fixtures, landscaping, instead of stretching everything over 27.5 years. Those components are eligible for 100 percent bonus depreciation in year one, and that 100 percent is permanent now. On a furnished short-term rental this can mean tens of thousands off a single year's tax bill. Your number depends on your basis and your bracket.
The catch is timing. The deduction is tied to the year the property is placed in service, meaning ready for use, not the year you closed. In service by December 31, or you wait a full year for it.
Not every property gives you the same amount to work with. Land is never depreciable, so two properties at the same price can carry very different depreciable bases depending on the market and the structure. That is worth modeling before you choose the property, not after you own it.
The rules are public. The sequencing is the work, and most of it stops being changeable the day you close.

Certified Real Estate Tax Strategist, Ashburn, Virginia. Working with real estate investors and high income earners across the DMV.
Fifteen minutes before you write the offer is worth more than an hour after you close.
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