Renting Out a Spare Room: How It Changes Your Home Taxes

TL;DR: Renting out a spare room means you must report the income on Schedule E, can deduct a percentage of home expenses based on square footage, and may owe depreciation recapture tax when you sell. If you rent a room for 14 days or fewer per year, the income is tax-free under the IRS "master's exemption" rule (Section 280A(g)). Beyond that, keep separate records for the rented space from day one.

_Last reviewed: August 2026 · 7 min read_

You listed a spare room on Airbnb or found a long-term tenant, and now tax season feels different. The good news: the rules aren't complicated once you know which bucket you fall into, and a little record-keeping now saves a bigger headache later.

Okoniq Property Hub helps owner-operators log rental income, track shared-expense splits, and store maintenance records tied to the rented portion of the home.

Do you have to report income from a rented room?

Yes, in almost every case you must report rent from a spare room as income. The one exception is the 14-day rule: if you rent the room for 14 days or fewer during the tax year, that income doesn't need to be reported at all, and you can't deduct related expenses either.

Cross that 14-day line and everything changes. You'll file Schedule E (Supplemental Income and Loss) alongside your Form 1040, listing rental income and allowable expenses. The IRS treats the arrangement as a partial rental of your personal residence, which means you split expenses between personal use and rental use, usually by square footage or by the number of rooms.

Say your home is 2,000 square feet and the rented room is 200 square feet, that's 10%. You'd allocate 10% of mortgage interest, property taxes, utilities, insurance, and repairs to the rental side. Repairs made only to the rented room, like fixing a window or replacing a light fixture, are 100% deductible against that rental income.

What expenses can you actually deduct?

You can deduct a proportional share of whole-home costs plus 100% of room-specific costs. Whole-home costs include mortgage interest, property tax, homeowners insurance, utilities, HOA dues, and general repairs like a new roof or foundation crack repair. These get split by the percentage of space rented.

Room-specific costs are different. If you install a new lock, paint the room, or add a window unit for the tenant, that expense applies 100% to the rental side since it wouldn't exist without the tenant. Depreciation works the same way: you depreciate 10% (or whatever your ratio is) of the home's value over 27.5 years using IRS Publication 527 tables.

One expense category people miss: safety upgrades required once you have a paying occupant. Many states require a working smoke detector and carbon monoxide detector in any rented sleeping area, and certain rooms need CO detectors more than others depending on proximity to fuel-burning appliances. These are deductible as rental expenses, not personal ones, once the room is occupied by a paying tenant.

Does renting a room affect your home-sale tax exclusion?

Yes, and this is the part most homeowners miss until they sell. Under normal rules, you can exclude up to $250,000 of gain ($500,000 for married couples filing jointly) when you sell your primary residence, as long as you lived there 2 of the last 5 years.

But if you claimed depreciation on the rented portion, that depreciation gets "recaptured" and taxed at up to 25% when you sell, regardless of the exclusion. If your rented room represented 10% of the home's square footage and you claimed $8,000 in depreciation over several years, you could owe up to $2,000 in recapture tax on that amount alone, separate from any capital gains tax on the sale itself.

| Scenario | Under 14 days/year | Over 14 days/year | |---|---|---| | Report income? | No | Yes, Schedule E | | Deduct expenses? | No | Yes, proportional | | Depreciation required? | No | Yes, on rented % | | Affects home-sale exclusion? | No | Yes, recapture applies |

What records should you keep once you start renting a room?

Keep a running log of rental days, income received, and every expense tied to the room from the first day a tenant pays you. The IRS wants square footage documentation, dated receipts, and a clear split between personal and rental use, especially if you're audited on a mixed-use property.

This matters more if the room has its own entrance, bathroom, or electrical circuit, since those upgrades often trigger inspection requirements. If you're adding a dedicated outlet or circuit for a tenant's space heater or window AC, check whether your panel has enough amperage to handle the added load before you install anything. Older homes with two-prong outlets in the rented room may also need a safe upgrade to three-prong outlets to meet code for a paying occupant, and that cost is a legitimate rental deduction.

Should you treat the room like a separate rental unit?

Not exactly, but you should manage it with the same discipline. A spare room isn't a separate legal unit, so you don't need a new tax ID or separate insurance policy in most cases, but you do need a paper trail that stands on its own if the IRS asks.

Set up a dedicated folder or app for the room's income and expenses, separate from your regular household budget. Track the exact days rented, the rate charged, and every dollar spent on the space. If you plan to hold the tenant arrangement for several years, run the numbers on whether the depreciation deduction is worth the recapture tax you'll pay later, since some owners choose to skip claiming depreciation specifically to avoid that hit at sale time (talk to a CPA before deciding).

FAQ

Do I need to charge sales tax or occupancy tax on a rented room?

In many states and cities, short-term room rentals under 30 days are subject to lodging or occupancy tax, similar to a hotel stay. Check your city and state revenue department, since rates and thresholds vary widely, some cities exempt rentals under $10,000 a year.

Can I deduct homeowners insurance if I rent a room?

Yes, you can deduct the same percentage of your homeowners insurance premium that matches the rented square footage, but only for the months the room was actually rented. Some insurers also require you to add a rider once you have a paying tenant, and that added cost is fully deductible.

What happens if I only rent the room a few months a year?

You prorate everything by the number of days rented divided by 365, then apply the square-footage percentage on top of that. For example, renting 10% of your home for 6 months means you'd deduct roughly 5% of annual whole-home expenses for that tax year.

Does renting a room count as starting a business?

Not usually. Occasional room rental is passive rental income reported on Schedule E, not self-employment income on Schedule C, unless you provide hotel-like services such as daily cleaning or meals, which can push it into business territory with different tax treatment.

Will renting a room raise my property taxes?

Rarely, unless your local assessor reclassifies part of the home as a rental unit or you pull permits for a separate entrance or kitchenette. Most single-room rentals inside an existing floor plan don't trigger a reassessment, but it's worth a quick call to your county assessor if you're adding fixtures.

This is educational information, not tax advice. Talk to a CPA about your specific depreciation and Schedule E situation before filing.