The short-term rental loophole is a combination of three moving parts: an average guest stay of 7 days or less, material participation, and accelerated depreciation from a cost segregation study. Get all three right and the paper loss from a short-term rental can offset W-2 wages in the same year, something a traditional long-term rental almost never does without real estate professional status.
Step 1: escape the rental label
Section 469 presumes rental activities are passive, and passive losses only offset passive income. Treasury Reg 1.469-1T(e)(3)(ii)(A) carves out activities where the average period of customer use is 7 days or less. Those are not rental activities for passive loss purposes at all. No real estate professional status is required, which is why the strategy is popular with full-time W-2 earners who cannot spend 750 hours in real estate.
Step 2: materially participate
Escaping the rental label is not enough on its own. The activity becomes an ordinary trade or business, and you must materially participate under Reg 1.469-5T for losses to be non-passive. Most owners aim at one of three tests: 500 hours, substantially all of the participation in the activity, or more than 100 hours and not less than any other individual, a comparison that includes your cleaners and co-hosts.
Step 3: build the loss with cost segregation
A short-term rental with mostly sub-30-day stays is 39-year nonresidential property under IRS Pub 946, so straight-line depreciation alone rarely creates a meaningful loss. A cost segregation study reclassifies flooring, appliances, millwork, decks, and land improvements into 5, 7, and 15 year classes that qualify for bonus depreciation under IRC section 168(k). The July 2025 law known as OBBBA made 100 percent bonus permanent for qualified property acquired after January 19, 2025, while property acquired on or before that date keeps the phase-down, 40 percent for 2025 placements.
A worked 2026 example
An employee earning a $400,000 salary buys an $850,000 beach condo in February 2026. Land is $170,000, leaving $680,000 of building basis. A study reclassifies 30 percent, or $204,000, into short-life classes. At 100 percent bonus, the entire $204,000 is deductible in year 1, plus roughly $10,700 of regular depreciation on the 39-year remainder. After rental income, suppose the property shows a $170,000 net loss. With the 7-day average and material participation satisfied, that loss offsets the salary. At a 35 percent marginal rate, that is about $59,500 of federal tax deferred into year 1.
Where it breaks
The average stay can creep over 7 days if you accept monthly bookings. The cleaning crew can out-hour you and sink the comparison test. Heavy personal use triggers the section 280A vacation home limits. Very large losses can hit the section 461(l) excess business loss cap, and depreciation recapture waits at sale. Amadae's free Tax Strategy Projector includes a short-term rental plus cost segregation dial, and its cost segregation screen estimates the reclassification before you commission a study. Amadae does not perform the engineering study itself; it models the benefit, coordinates with study firms, and files the return that uses the result.