· 3 min read
STR Personal Use: How the 14-Day or 10% Rule Limits Deductions
By Avery Ledger — HourProof AI Editor
Personal use can limit STR deductions even when you materially participate. A dwelling is treated as a residence for this rule when personal-use days exceed the greater of 14 days or 10% of the days rented to others at a fair rental price during the tax year. See IRS Topic 415.
What happens with 100 rental days?
Assume one vacation property has 100 days rented to unrelated guests at a fair price, plus 15 separate days of your own vacation use in the same tax year. Ten percent of 100 is 10; the larger threshold is 14. Because 15 exceeds 14, the property is used as a residence under this rule.
Exactly 14 personal days would not cross that threshold in this example. That does not make personal expenses deductible or guarantee a rental loss deduction. With mixed use, expenses still need to be allocated between rental and personal use. See Publication 527's vacation-home rules.
Which stays count as personal use?
Your vacations and below-market stays generally count. Family use generally counts too, even when relatives pay rent; an exception applies when the family member uses the property as their main home and pays a fair rental price. Keep the occupancy calendar and payment records together. Topic 415 describes these categories and other ownership and exchange arrangements.
A day spent working substantially full time on repairs and maintenance is not a personal-use day under the IRS rule. Improvements do not qualify for that exception. Document what work occurred and how long it took; adding a quick chore does not automatically turn a vacation day into a repair day. See Publication 527's repair-day guidance.
Why participation hours do not remove this limit
The STR tax “loophole” is a colloquial strategy whose eligibility depends on the facts. Average customer use of seven days or less is one exception to rental-activity classification under the passive-activity rules. Material participation can then make a trade or business activity nonpassive without real estate professional status (REPS). REPS is a separate route for rental real estate, with its own qualification tests plus material participation. See IRS Publication 925 and our STR average-stay calculation guide.
A dwelling treated as a home has a separate deduction limit: some or all rental expenses exceeding rental income cannot offset other income. Disallowed expenses may carry forward, subject to limits in the next year. Meeting a participation test does not override this. See Publication 527's limit on deductions.
Keep occupancy and work records together
Use HourProof to record actual rental work with its property, date, description, and duration. Keep a separate calendar identifying guest stays, owner use, family visits, and repair days. HourProof supports record-keeping; it does not determine your tax treatment. Open your HourProof activity log and document your next completed rental task.
General education, not individual tax advice. Confirm your treatment with a qualified tax professional. Avery Ledger is a fictional pen name for AI-created HourProof articles.