Vacation Rental Tax Rules: The 14-Day Rule, Mixed-Use Allocation, and IRC 280A
IRC 280A establishes the tax rules for properties that serve dual purposes as both personal residences and rental properties. The code creates three distinct categories based on how many days the property is rented and how many days the owner uses it personally. The most well-known provision is the “14-day rule” (sometimes called the “Masters exemption” after homeowners near Augusta National who rent during the golf tournament), which allows taxpayers to rent their home for up to 14 days per year and exclude all rental income from taxable income. This exclusion has no dollar cap. At the other end, properties rented for more than 14 days but used personally for more than the greater of 14 days or 10% of rental days are classified as “personal residences,” which limits deductions to rental income (preventing a net rental loss). Understanding which category applies determines whether you can claim losses, must allocate expenses, or can exclude income entirely.
Three categories under IRC 280A:
| Category | Rental Days | Personal Use Days | Tax Treatment |
|---|---|---|---|
| 1. Minimal rental (14-day rule) | 14 or fewer | More than 14 (property used as a home) | ALL rental income excluded from tax. No deductions for rental expenses. |
| 2. Rental property | More than 14 | Not more than the greater of 14 or 10% of rental days | Rental share of expenses deductible. Net losses allowed (subject to passive loss rules). |
| 3. Personal residence (mixed-use) | More than 14 | More than the greater of 14 or 10% of rental days | Deductions limited to rental income. No net loss allowed. Unused deductions carry forward. |
Personal use days include:
| Counts as Personal Use | Doesn’t Count as Personal Use |
|---|---|
| Days owner uses the property | Days spent solely on repairs/maintenance |
| Days family members use it (even at FMV rent, unless it’s their main home) | Days property is listed for rent but unrented |
| Days traded via home exchange | Days between tenants (cleaning, turnover) |
| Days rented below FMV to anyone | Days rented at FMV to unrelated tenants |
| Days any co-owner uses it |
Expense allocation methods (when mixed-use):
| Method | Rental Fraction | Personal Fraction |
|---|---|---|
| IRS method (IRC 280A(e)) | Rental days / Total days used (rental + personal) | Personal days / Total days used |
The IRS method above is the 280A(e) fraction that IRS guidance uses (Pub. 527). Some owners use a days-in-year fraction (rental days / 365) for mortgage interest and property taxes instead, which puts less of those costs against rental income; that approach isn’t in IRS guidance, so get advice before using it.
How do the three categories work in practice?
What are the two methods for calculating the home office deduction?
The simplified method allows $5 per square foot of your home used for business, up to 300 square feet, for a maximum deduction of $1,500. The regular method calculates actual expenses (mortgage interest or rent, property taxes, utilities, insurance, repairs, depreciation) based on the percentage of your home used exclusively and regularly for business. The regular method requires more recordkeeping but often produces a larger deduction, especially for larger office spaces or expensive homes. Under the regular method, the home office deduction cannot create a business loss, but excess deductions carry forward to the next year. Employees working from home cannot claim the home office deduction under current law (the TCJA suspended it for employees starting in 2018, and the One Big Beautiful Bill Act made that permanent), but self-employed individuals and independent contractors remain eligible.
What is real estate professional status and why does it matter for taxes?
Real estate professional status (REPS) under IRC 469(c)(7) removes the automatic passive label from rental real estate, so if you also materially participate, rental losses can offset ordinary income without the $25,000 active participation limitation. To qualify, you must spend more than 750 hours in real property trades or businesses in which you materially participate during the year AND more than half of your total working hours must be in those activities. Each rental property must be separately evaluated for material participation unless you elect to aggregate all rental activities. This status is particularly valuable for taxpayers with significant rental depreciation deductions that would otherwise be suspended as passive losses. Losses still have to clear the at-risk rules first, and very large ones can be capped by the excess business loss rule. The IRS closely scrutinizes REPS claims, so detailed time logs are essential.
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Yarik Yarosh, CPA. "Vacation Rental Tax Rules: The 14-Day Rule, Mixed-Use Allocation, and IRC 280A." Blue Cloud CPA, September 5, 2026, updated October 18, 2026. https://bluecloudcpa.com/guides/small-business-vacation-rental-14-day-rule-irc-280a
This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.