Vacation-Home Loss Limits — The Rental-Use Deduction Cap Explained

TL;DR: If you rent out a vacation home you also use personally, IRS Section 280A can limit your deductible rental expenses to the amount of rental income you collected, disallowing a net loss in the current year. Disallowed amounts aren't lost — they carry forward to future years when rental income is higher. The exact personal-use day/percentage test that decides which set of rules applies is set out in IRS Publication 527; confirm the current thresholds there or with your CPA before you file.

_Last reviewed: August 2026 · 8 min read_

You bought a lake house or a mountain cabin, you rent it out part of the year, and you keep it for yourself the rest. Come tax time you're staring at a loss on paper and wondering why the IRS won't let you deduct all of it. The short answer: personal use changes the rules, and Section 280A puts a cap on what you can write off.

Okoniq Property Hub logs rental days, personal-use days, and every expense receipt in one place, so this test doesn't have to be reconstructed from memory in April.

What triggers the vacation-home loss limit?

The limit kicks in the moment a property is used for both personal enjoyment and rental income during the same tax year. The IRS treats a "dwelling unit" — a house, condo, cabin, or even a boat with sleeping and cooking facilities — differently depending on how many days you occupied it yourself versus how many days you rented it at fair market value.

Publication 527 lays out a specific day-count and percentage test that determines whether the property is treated primarily as a rental, primarily as a residence, or something in between. That threshold is a statutory number that can move with legislation, so don't rely on a number you remember from a prior year's return — check the current figure directly on IRS.gov or confirm it with your CPA before you classify the property. What doesn't change is the mechanism: cross into "residence" territory on the personal-use side, and your deductible rental losses get capped.

There's one narrow exception worth knowing about even though it isn't a loss-limit rule itself: short-term personal rentals under the Augusta Rule let some homeowners exclude limited rental income entirely, with no Schedule E reporting at all. That's a different situation from a vacation home you rent out for most of the year, but it's easy to confuse the two if you're skimming forum posts instead of the statute.

How does the IRS cap the deduction for mixed-use property?

Once a property is classified as a residence with some rental use, your deductible expenses are limited to the rental income the property generated that year — you can't create a net loss from it. The IRS applies a specific ordering rule (often called the Bolton ordering, after the Tax Court case that settled it): mortgage interest and property taxes come off the top first, operating expenses like insurance, utilities, and repairs come next, and depreciation comes last.

That ordering matters because it determines what actually gets used up against your rental income each year and what gets pushed to a future year. If rental income only covers the interest and taxes, your operating expenses and depreciation deduction can sit unused for that tax year, even though you genuinely spent the money. Repairs you handle yourself, like a $2,500 or under invoice under the de minimis safe harbor, still count as operating expenses in this ordering, so tracking them separately from capital improvements still matters even when the deduction is capped.

| Situation | Rental-primary property | Residence with rental use | |---|---|---| | Personal-use days | Below the Pub 527 threshold | Above the Pub 527 threshold | | Loss allowed this year | Yes, subject to passive loss rules | No — capped at rental income | | Expense ordering | Not restricted | Interest/taxes, then operating, then depreciation | | Unused amounts | May be limited by passive loss rules | Carry forward indefinitely |

What happens to expenses you can't deduct this year?

They carry forward, not disappear. Any operating expense or depreciation amount disallowed by the §280A cap in one year rolls forward and stacks against that same property's future rental income, for as long as you own and rent it. There's no dollar cap on how much can carry forward and no expiration date tied to a fixed number of years — it just waits until a year with enough rental income to absorb it.

This is one reason keeping a clean audit trail for a vacation home matters more than for a standard rental: you may be defending a carryforward figure five or ten years after the expense was originally incurred, and the IRS can ask you to show where the number came from. If the property is ever damaged and you're filing a casualty loss claim on top of the carryforward math, the two calculations interact — see casualty loss deduction for rental property for how that layers on.

How is this different from the passive activity loss rules?

Section 280A and the passive activity loss rules are two separate gates, and a vacation home with personal use has to clear both. §280A caps your loss at the property level based on personal use. The passive loss rules, separately, limit how much rental loss from any property you can use against non-rental income, based on your participation level and income. A vacation-home loss that survives the §280A cap still has to clear the passive loss test before it offsets your salary or other income.

In practice this means a vacation home almost never produces a usable current-year loss the way a straightforward long-term rental might. Most owners end up with a growing carryforward balance instead, one that only gets used up in a big way when personal use drops, rental income rises, or the property is sold. At sale, that accumulated depreciation comes back into play through depreciation recapture, so the carryforward and the recapture calculation should be reconciled together rather than treated as unrelated numbers.

What if I want to convert the vacation home to a full-time rental?

Cutting personal use below the Pub 527 threshold is the most direct way out of the cap, but the conversion itself has its own tax mechanics. Basis, prior depreciation, and the character of any gain or loss all get recalculated at the point of conversion — see converting a rental to a primary residence for the mirror-image version of this transition and how the IRS treats the switch either direction. Owners sometimes shift usage mid-year to change the property's classification going forward, but the IRS looks at the full year's pattern, not just the months after a decision was made, so a late-year change doesn't retroactively reset the test.

FAQ

Does renting my vacation home for just a few weeks a year trigger the loss cap?

It depends on where your personal-use days fall relative to the threshold in IRS Publication 527, not on the number of weeks rented alone — check the current day-count and percentage test there before assuming either way.

Can I deduct mortgage interest on a vacation home even if the rental loss is capped?

Mortgage interest is typically deducted first in the expense ordering against rental income, and any portion tied to personal use may still be deductible as a personal itemized deduction subject to the usual mortgage interest rules — confirm the split with your CPA.

Do disallowed vacation-home losses expire if I never rent the property again?

No, but they also can't be used against non-rental income once the property stops generating rental income; they generally remain tied to that specific property's rental activity.

How does the vacation-home cap interact with 1031 exchanges?

A vacation home with significant personal use may not qualify as investment property for a 1031 exchange at all, so the personal-use test matters twice: once for the annual loss cap and again if you're planning to defer gain at sale.

Should I track personal-use days even in years I don't rent the property?

Yes — the IRS test looks at usage patterns over time in some cases, and a documented history removes the guesswork if a return is ever questioned years later.

<div class="glass rounded-2xl p-5 mt-7 max-w-4xl border border-red-400/30 bg-red-500/5"> <div class="flex items-start gap-3"> <span class="text-2xl flex-shrink-0">⚠️</span> <div class="flex-1 min-w-0"> <p class="text-red-200 text-sm font-bold">Not tax advice</p> <p class="text-slate-300 text-xs mt-1 leading-relaxed"> This post assumes a mixed personal-and-rental-use dwelling under IRS Section 280A and does not state the current personal-use day or percentage threshold, since that figure needs to be confirmed directly against IRS Publication 527. It does not account for your specific bracket, state tax rules, entity structure, or any legislation passed after July 2026. Tax rules change and depend on your specific situation. Talk to a licensed CPA before acting on anything here, and confirm current figures on IRS.gov. </p> </div> </div> </div>