You bought a beautiful vacation rental in a market you love. Of course you want to stay there. But the personal use rules under Section 280A are one of the fastest ways to blow up your STR tax strategy. Here's what you need to know to avoid the trap.
- Personal use exceeding 14 days or 10% of rental days (whichever is greater) reclassifies your STR as a personal residence.
- Once reclassified, deductions are limited to rental income. No more offsetting W-2 income with paper losses.
- Maintenance and repair days do not count as personal use, even if others are staying with you.
- Zero personal use in years 1-2 is the safest approach, when bonus depreciation deductions are largest.
- Track every night with guest type, rate, and purpose to protect your position in an audit.
The Rule
If you use your STR property for personal purposes for more than the greater of 14 days per year or 10% of total rental days, the IRS reclassifies it as a personal residence. Once that happens, your deductions are severely limited: you can only deduct expenses up to the amount of your rental income. No more offsetting W-2 income with paper losses.
For a property rented 200 days per year, 10% is 20 days. So you'd be limited to 20 days of personal use. For a property rented 100 days, 10% is only 10 days, but the 14-day floor kicks in, giving you up to 14 days.
What Counts as Personal Use
Your Own Stays
Any day you or your family occupy the property for personal enjoyment.
Family at Below-Market Rates
Days when family members stay at the property for less than fair rental value count as personal use days.
Trades
If you swap use of your property with another owner (vacation home exchange), those days count.
What Does NOT Count as Personal Use
Maintenance and Repair Days
If you're at the property doing legitimate work (repairs, cleaning, setup, inspections) those days are not personal use, even if other people are staying with you. This is an important distinction for STR owners who track material participation hours.
Days the Property Is Listed but Unrented
Vacant days are not personal use days.
My Recommendation: Zero Personal Use in Years 1-2
This is the advice you'll hear from every savvy real estate CPA: do not use your STR personally in the first two years of ownership. Those are the years when your cost segregation and bonus depreciation deduction is the biggest, and you cannot afford to have it disallowed because you spent two weeks there over Christmas.
After the big depreciation deductions have been claimed and your annual tax benefit is mostly operating expenses and straight-line depreciation, the stakes of personal use are lower. But in the early years? Stay away from your own property.
Track Every Night
Keep a log of every night the property is occupied, by whom, and at what rate. Distinguish between guest nights (fair market value bookings), personal nights, family nights, maintenance nights, and vacant nights. Your CPA needs this breakdown, and the IRS will want to see it in an audit.
Proper documentation is what separates investors who survive an audit from those who lose their deductions. A contemporaneous log maintained throughout the year is far more defensible than a spreadsheet assembled at tax time.
The Bottom Line: Section 280A is a hard line. Exceed the personal use threshold (14 days or 10% of rental days, whichever is greater) and your STR deductions are capped at rental income, eliminating the ability to offset W-2 income. The safest approach is zero personal use in years 1-2 when depreciation deductions are largest. After that, track every night carefully and keep your personal use well below the limit.
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