Room rental income and tax deductions

Updated July 31, 2026 · Based on IRS 2025 publications · Educational information only

Begin with the basic rule

Rent you receive is generally rental income. The IRS says expenses connected with producing that income may be deductible, subject to limits and allocation rules. A normal room rental is commonly reported on Schedule E, but the facts can change the treatment.

If you rent part of the home you live in, divide appropriate expenses between rental and personal use as though they related to two parts of the property.

Choose a reasonable allocation method

IRS Publication 527 says a reasonable method may be used to divide a whole-home expense. It identifies square footage and number of rooms as two common methods. For some costs, another method such as the number of people using a utility may be reasonable.

Sort costs before deducting them

Mortgage principal is not a rental expense. Only the interest portion may be relevant, and only after the proper allocation. The treatment of repairs and improvements is different: a repair generally keeps property in ordinary operating condition, while an improvement may add value, prolong useful life, or adapt the property to a new use and may need to be recovered over time.

Depreciation needs careful handling

Residential rental real estate is generally depreciated over 27.5 years under the rules described in Publication 527. Land is not depreciable.

When property held for personal use is converted to rental use, the depreciation basis is generally the lower of the property's adjusted basis or fair market value on the conversion date. For a room rental, the rental portion must then be determined using an appropriate allocation method.

Furniture, appliances, and improvements may have different recovery periods or other available treatment. Do not assume that a cost is immediately deductible simply because it benefits only the rented room.

Why skipping depreciation can matter later

IRS Publication 523 explains that gain equal to depreciation allowed or allowable for rental use after May 6, 1997 generally cannot be excluded under the home-sale exclusion. In plain language, depreciation can affect the tax result when you sell even if you did not claim every deduction you were entitled to claim.

The sale rules also distinguish rental space within the home's living area from a separate business or rental portion outside it. Detached units, converted garages, and accessory dwellings can require different calculations. Get advice before a sale rather than trying to reconstruct years of records afterward.

A cautious example

Assume a homeowner receives $900 per month for a bedroom and uses a documented 10 percent square-foot allocation for appropriate whole-home expenses. The owner might report $10,800 of annual rental income, then evaluate direct rental costs, the allocable share of eligible whole-home expenses, and allowable depreciation.

This example intentionally stops before producing a taxable-income figure. The result depends on basis, fair market value at conversion, land value, placed-in-service date, expense limits, repairs versus improvements, personal use, passive-activity rules, and the homeowner's complete facts.

Keep records from the first day

• The signed room rental agreement and a log of rent received
• Your written allocation method, measurements, and supporting notes
• The purchase closing statement and records of major improvements
• Evidence supporting fair market value when the rental use begins, if needed
• Mortgage interest, property tax, insurance, and utility statements
• Receipts labeled as direct rental, shared, personal, repair, or improvement
• The depreciation schedule carried forward from year to year

Questions to take to a tax professional

• What is the correct depreciation basis and placed-in-service date?
• Which allocation method best fits this home and these expenses?
• How should shared areas be treated?
• Which costs are repairs, improvements, furniture, or supplies?
• Do personal-use or passive-activity limits apply?
• How could the rental affect a future home sale or state return?

RoomRental.com does not provide tax, legal, accounting, appraisal, or financial advice. IRS publications change. Confirm the current rules and your own facts before filing.