7 Things to Know Before Renting Out Your Second Home
A vacation home can move between personal-use and rental tax rules based on how you actually use it. The calendar matters, the people using the property matter, and a tax rule does not override your mortgage, insurance, HOA, or local rental restrictions.
Quick Answer
- IRS Publication 527 has a special rule for a dwelling used as a home and rented for fewer than 15 days during the year.
- For mixed personal and rental use, the IRS “used as a home” test compares personal use with the greater of 14 days or 10% of fair-rental days.
- Certain family use, swaps, and below-market rentals can count as personal use.
- Mixed-use expenses generally must be divided between rental and personal use.
- Keep a day-by-day calendar and records from the beginning.
1. The famous “14-day rule” has an important condition
IRS Publication 527 says that if you use a dwelling unit as a home and rent it for fewer than 15 days during the year, the rental period generally is not treated as rental activity.
In that situation, the rental income is not reported as rental income and rental expenses are not deducted as rental expenses.
The phrase “rent it for 14 days tax-free” leaves out the condition that the dwelling must also be used as a home under the IRS rules.
2. Learn the greater-of-14-days-or-10% personal-use test
For a mixed-use dwelling, IRS Publication 527 says you use it as a home during the tax year if personal use is more than the greater of:
- 14 days, or
- 10% of the total days it is rented to others at a fair rental price.
That classification can affect how rental deductions and losses are handled.
3. Personal-use days include more than your own vacations
IRS rules can count use by you, another owner, certain family members, people using the property through a reciprocal arrangement, and people paying less than fair rental value.
That means a “free week for family” can affect the tax calculation.
Publication 527 also provides rules for repair and maintenance days. A day spent substantially full time repairing and maintaining the property may be treated differently from an ordinary personal-use day.
4. Mixed-use expenses have to be allocated
If the property is used for both rental and personal purposes, expenses generally must be divided between those uses.
Publication 527 explains the allocation and limitation rules. Do not assume that mortgage interest, taxes, utilities, repairs, insurance, or other costs become fully deductible rental expenses merely because the property appeared on a rental platform.
5. Depreciation creates long-term recordkeeping
When property is used in a rental activity, depreciation rules can apply to the rental portion of depreciable property. Land is not depreciated.
Basis, improvements, placed-in-service dates, personal use, and rental allocation can matter years later.
Set up records when you first rent the property. Reconstructing basis and improvement history when you sell is much harder.
6. A tax rule does not give you permission to rent
Before listing the property, check:
- mortgage occupancy and rental terms,
- homeowners or landlord insurance requirements,
- HOA or condominium restrictions,
- local zoning and short-term-rental rules,
- licensing or registration,
- lodging, occupancy, or sales-tax obligations.
The federal tax treatment and the local legality of the rental are separate questions.
7. Keep a calendar detailed enough to support the tax treatment
Track fair-rental days, personal-use days, days available but not rented, repair days, rates charged, direct rental expenses, and who used the property when that matters to classification.
Booking-platform reports can help, but they may not capture your personal-use and repair-day facts.
Before You Rent Out Your Second Home Checklist
- Estimate rental and personal-use days before listing.
- Check whether the under-15-day rule could apply.
- Keep a contemporaneous use calendar.
- Document fair-market rental rates.
- Confirm mortgage and insurance terms.
- Verify HOA and local short-term-rental rules.
- Set up expense, basis, and improvement records.
- Use the IRS publication for the tax year you are filing.
FAQ
Is rental income always tax-free if I rent for 14 days or less?
No. Publication 527’s minimal-rental rule applies when the dwelling is used as a home and rented for fewer than 15 days.
What is the 14-day/10% test?
It is part of determining whether a mixed-use dwelling is treated as used as a home for federal tax purposes. Personal use must exceed the greater of 14 days or 10% of fair-rental days.
Do repair days count as personal-use days?
IRS rules can exclude days spent substantially full time repairing and maintaining the property from personal-use days. Keep detailed records of the work.
The Bottom Line
The tax result depends on the calendar and the facts. Track use carefully, verify rental permission before listing, and do not rely on a simplified “14-day rule” without checking the full IRS requirements.