A married couple earns $520,000 of W-2 income. They bought a $900,000 vacation rental in August 2026 ($150,000 of it land) and listed it September 1. Average guest stays run four nights. One spouse has logged 85 hours through mid-October and handles guests and turnovers personally; the cleaner has logged 40.
A short-term rental bought in 2026, with a cost segregation study| Depreciable basis (purchase price minus land) | $750,000 |
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| Assumed cost segregation result: 5, 7 and 15-year property | 25%, or $187,500 |
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| 2026 bonus depreciation at 100% on that $187,500 | $187,500 |
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| Taxable income before the loss (MFJ, standard deduction) | $487,800 |
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| Taxable income after a $187,500 non-passive loss | $300,300 |
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| Federal tax effect: $84,250 at 32% plus $103,250 at 24% | about $51,740 |
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The whole result depends on one fact: the spouse must finish the year with more than 100 hours and more hours than anyone else, including the cleaner and any co-host. If the test fails, the same $187,500 is a passive loss that waits for passive income or a sale.
The study itself is not a year-end deadline. It can be finished before the return is filed in 2027. The placed-in-service date and the hours are what must land in 2026.
The example ignores regular depreciation on the rest of the building, operating income or loss, state tax and recapture when the property is eventually sold.
Illustrative composite with simplified assumptions, not a client result and not a projection of what you will save. Your numbers depend on your full return.