Personal Use of Rental Property: 14-Day Rule and Vacation Home Limits

If you both live in and rent out the same property, the tax treatment turns on one comparison: how many days you used it personally versus how many days you rented it at a fair market price. That ratio drops the property into one of three buckets. Rent it fewer than 15 days a year and the IRS ignores the rental entirely. Keep personal use at or below the greater of 14 days or 10% of rental days and you get full rental treatment on Schedule E. Cross that line and the vacation home rule caps your deductions at what the property earns. The personal use of rental property is a counting exercise before it is a tax question, and miscounting even a few days can move you from one bucket to another.¹

What Counts as a Personal Use Day

Any part of a day is a full day. There is no hours threshold. Stopping by the cabin for a Saturday afternoon makes Saturday a personal use day.²

Four situations trigger a personal use day:

You, your spouse, or any co-owner uses the property.
A family member of you or another owner uses it. The IRS defines family here as your spouse, siblings and half-siblings, parents and grandparents, and children and grandchildren.
Someone uses your property under a home-swap arrangement that lets you use theirs in return, even if they pay rent.
Anyone, including a stranger, occupies the property at less than a fair rental price.

The co-owner rule has one narrow exception. If a co-owner rents the property from you as their primary home and pays fair market rent under a shared equity financing agreement — an arrangement where multiple people buy ownership stakes and one lives there as a primary residence while paying rent to the others — those days are not personal use days.¹

A rental day, by contrast, is only a day someone rents at a price comparable to what an unrelated person would pay for a similar home in the same area and season. If the rent falls below that fair market level for any reason, it is not a rental day.¹

Days That Don’t Count

Repair and Maintenance Days

Days you spend working substantially full time on repairs and routine maintenance are excluded from your personal use count, even if family members are relaxing at the property the whole time. Patching the deck for an hour before spending the rest of the day hiking does not qualify. Publication 527 gives an example of a family spending a week at their mountain cabin where the owner works three or four hours a day on maintenance while the rest of the family works substantially full time on upkeep. Because the family did the bulk of the work and the trip’s main purpose was maintenance, none of those days count as personal use.³

Only repairs and routine maintenance qualify. Adding a bathroom or expanding the kitchen is an improvement and does not trigger this exception.

Vacant Days

Days when the property sits empty but is available for rent are neither rental days nor personal use days. They do not count on either side of the ratio. Listing on a booking platform for 300 days but only actually renting 90 gives you 90 rental days, not 300. The other 210 are vacant.⁴

Under 15 Rental Days: The Property Is Not a Rental at All

If you use the property as your home and rent it fewer than 15 days during the year, the IRS ignores the rental activity. You do not report the rental income, and you cannot deduct rental-specific expenses like depreciation or advertising. Whatever you collect is tax-free. Mortgage interest and property taxes still come off on Schedule A as personal itemized deductions, just as they would for any home you live in.⁵⁶

Renting the house for a week or two during a local event or holiday weekend often lands here.

Full Rental Treatment: The 14-Day / 10% Test

Your property is treated as a standard rental when personal use stays at or below the greater of 14 days or 10% of the days it was rented at fair market value. The higher number controls. Rent it 200 days and 10% is 20, so you can use it personally up to 20 days. Rent it only 100 days and 10% is 10, but the 14-day floor still lets you use it up to 14 days.⁷

Report all rental income and expenses on Schedule E. You can deduct every ordinary and necessary rental expense: mortgage interest, property taxes, insurance, utilities, repairs, management fees, and depreciation. If deductible expenses exceed rental income, you have a net loss that may offset other income, subject to the passive activity rules that apply to rental real estate generally.⁸

The Vacation Home Rule

Cross the greater of 14 days or 10% of rental days in personal use and the IRS treats the property as your residence. Section 280A kicks in. The core restriction is that rental deductions cannot exceed gross rental income. The property cannot generate a tax loss.⁹

Allocating Shared Expenses

Every shared cost gets split into a rental portion and a personal portion. The rental share is the number of fair-market rental days divided by the total days the property was used (rental days plus personal use days). Rent 60 days and use personally 40 days, and the rental fraction is 60/100, or 60%. That fraction applies to mortgage interest, property taxes, insurance, utilities, and other shared costs.¹⁰

The Deduction Order

Once allocated, the rental share is deducted in a strict sequence. Each tier can only use whatever rental income remains after the tier above it:

Tier 1 is the rental share of mortgage interest and property taxes. These come off first because they are deductible even if you never rent the property.
Tier 2 is the rental share of operating expenses: utilities, insurance, maintenance, repairs, and similar costs. Deductible only to the extent gross rental income remains after Tier 1.
Tier 3 is depreciation, claimed last and only if income survives both prior tiers.

Concrete numbers help. Say gross rental income is $15,000 and allocated Tier 1 expenses are $10,000. That leaves $5,000 for Tier 2. If allocated operating costs total $6,000, only $5,000 is deductible this year, and depreciation gets nothing. The remaining $1,000 of operating expenses carries forward.⁹

Carryforward

Disallowed Tier 2 and Tier 3 amounts roll forward to future years with no expiration. But they face the same income cap in every future year. If the property never produces enough rental income to absorb the carryover, those deductions just accumulate. Worksheet 5-1 in Publication 527 walks through the calculation before you transfer the allowable amounts to Schedule E.¹¹

Renting to Family: The Trap That Reclassifies Everything

Renting to a relative is the fastest way to accidentally move the property from one bucket to another. Charge a family member less than fair market rent — even slightly less — and every day they occupy the property counts as your personal use day. Publication 527 illustrates this with a simple case: renting an apartment to your mother below fair market value means every day she lives there is your personal use day.¹

The exception is narrow. A family member’s use is not your personal use only if the relative uses the property as their primary home and pays a fair rental price. Fair rental price is established by comparing the rent against similar properties in the area, taking into account size, condition, furnishings, and location.¹²

This is where most family arrangements fall apart. Owners rent a condo to a sibling at a “family discount,” treat the payments as rental income, and deduct expenses accordingly. An audit then reveals the below-market rent converted every occupied day into personal use, flipping the property into vacation home status or worse. Charge fair market rent, document comparable listings, or accept that the IRS will treat the arrangement as personal use.

Where Each Bucket Gets Reported

Under 15 rental days: no rental income on the return. Mortgage interest and property taxes on Schedule A only.
Full rental treatment: all rental income and expenses on Schedule E. Net income or loss flows to Form 1040.
Vacation home rule: calculate limits on Worksheet 5-1, transfer only the allowable deductions to Schedule E so net income is zero or positive, and carry disallowed amounts to next year’s worksheet.

For both the full rental and vacation home buckets, the personal-use share of mortgage interest and property taxes goes on Schedule A. Those amounts fall under the state and local tax deduction cap, which limits the combined deduction for state income taxes, sales taxes, and property taxes.¹³

The rental share of interest and taxes goes on Schedule E; the personal share goes on Schedule A. Double-counting the same dollars on both schedules is an audit flag. Tax software will usually handle the split, but only if you enter the personal and rental day counts accurately.

Records to Keep

Fair rental price is not whatever you feel like charging. The IRS expects you to justify the rate against similar properties in the area — homes of roughly the same size, condition, furnishings, and location. Save those comparable listings. Screenshots of nearby listings during the same season make solid evidence if you rent through a booking platform.¹⁴

The IRS also expects contemporaneous records of day counts and expenses. Keep a calendar showing which days were rented, which days you or family used the property, and which days it sat vacant. Retain receipts, canceled checks, and bills for expenses. Without documentation, an audit can produce additional tax and penalties.¹⁵

Maintenance days you want excluded from personal use deserve extra care. A diary entry saying “worked on the house” will not hold up. Describe the specific repairs, note the hours spent and who did the work, keep hardware store receipts from that day, and photograph the work if practical.

1
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: Personal Use of Dwelling Unit (Including Vacation Home)
2
Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc. – Section: (d)(2)
3
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: Days Used for Repairs and Maintenance
4
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: Vacant Rental Property
5
Internal Revenue Service. Topic No. 415, Renting Residential and Vacation Property – Section: Minimal Rental Use
6
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: Minimal Rental Use
7
Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc. – Section: (d)(1)
8
Internal Revenue Service. Publication 527 (2025), Residential Rental Property
9
Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc. – Section: (c)(5)
10
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: How to Divide Expenses
11
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: Limit on Deductions
12
Internal Revenue Service. Topic No. 415, Renting Residential and Vacation Property
13
Internal Revenue Service. 2025 Instructions for Schedule A (Form 1040)
14
Internal Revenue Service. Publication 527 (2025), Residential Rental Property – Section: Fair Rental Price
15
Internal Revenue Service. Tips on Rental Real Estate Income, Deductions and Recordkeeping