The landlord home office deduction

By Tom, CPA · Updated October 27, 2026

Part of: Rental Property Taxes

TL;DR: A home office for managing rentals is deductible only if the rental activity rises to a trade or business and the space is used regularly and exclusively for it. The deduction is limited to the activity income and reported on Schedule E. A qualifying office can also turn home-to-rental trips into deductible mileage. Depreciation on the office is recaptured when you sell the home.

Educational only, not tax, legal, or investment advice. Examples are illustrations, not predictions. Rules and limits change; verify current figures and talk to a qualified professional about your situation.

Your tenant pays the mortgage; the IRS pays for the roof (eventually, over 27.5 years). Could the IRS also pay for part of your roof, the one over the spare room where you screen applicants and fight with the property management software? Sometimes.

Section 280A generally disallows deductions for a dwelling unit you use as a home, then carves out exceptions. The one that matters for landlords is section 280A(c)(1): a portion of the home used exclusively and on a regular basis as the principal place of business for a trade or business. The rest of this page is about the words "trade or business," "exclusively," and "principal place of business," and what the deduction is worth when you get past them. For the related mileage question, see landlord mileage and travel.

CPA Warning Label: The guest bedroom with a desk, a treadmill and the holiday decorations is not an exclusive-use office. The treadmill is a witness for the prosecution.

The trade-or-business hurdle

The home office exception requires a trade or business. A rental activity is not automatically one. Under the section 162 standard, the question is whether you are engaged in the activity with continuity and regularity and with the primary purpose of income or profit.

Rental activities that commonly qualify have several properties, ongoing tenant management, repairs and leasing performed by the owner, and real time spent each week. The Tax Court has allowed home office deductions to landlords whose rental activities met that standard, including an owner of several rental condominiums who managed them himself from a home office. A single long-term rental managed by a property manager is a much weaker case; that looks like an investment, and investment management does not support a home office deduction.

The QBI 250-hour safe harbor (see the QBI rental safe harbor) treats a rental as a trade or business for section 199A only. It does not by itself establish a trade or business for section 280A. Still, the same time logs that support the safe harbor are excellent evidence here too.

Regular and exclusive use

Two use tests apply to the space itself, as explained in IRS Publication 587:

• Exclusive use: a specific area used only for the business. It can be a room or a clearly separated part of a room. Personal use of that space, including family members using the computer for homework, fails the test. There is no de minimis exception for minor personal use.
• Regular use: used on a continuing basis, not occasionally or incidentally.

Principal place of business

The office must be your principal place of business for the rental activity. Under section 280A(c)(1), the term includes a place used for administrative or management activities if there is no other fixed location where you conduct substantial administrative or management activities. For most self-managing landlords, that is the case: you collect rent, keep books, schedule repairs and screen tenants from home, and the rentals themselves are where you do hands-on work, not administration.

If a property manager does the administration from its office, your home office may not be the principal place of business for the activity. If you own a separate rental business office, the home office generally fails.

Figuring the deduction

Under the actual expense method, you figure the business percentage of the home, usually square footage of the office divided by total square footage, then apply it to indirect expenses:

• Mortgage interest and real estate taxes (the business share moves from Schedule A to the rental activity; the rest stays on Schedule A if you itemize)
• Homeowners insurance
• Utilities and general repairs
• HOA dues
• Depreciation on the business portion of the home's basis (excluding land), generally over 39 years as nonresidential real property, since the office is not a dwelling unit you rent

Direct expenses for the office itself, such as painting the office, are deductible in full.

The simplified method

Rev. Proc. 2013-13 allows a simplified method: $5 per square foot of qualified business use, up to 300 square feet ($1,500 maximum), with no depreciation. Publication 587 describes it and notes it does not apply to rental use of your home (renting part of your home to someone else). For a landlord office that qualifies under section 280A(c)(1), many preparers use actual expenses because depreciation and the real tax and interest figures usually produce a larger number, and because forms and worksheets for the simplified method are built around Schedule C. Confirm the method with your preparer.

The income limit and where it goes

The deduction cannot exceed the gross income from the activity minus other expenses of the activity (section 280A(c)(5)). Disallowed amounts carry forward. For a rental activity, the deduction is reported on Schedule E as an other expense of the rental activity, allocated across properties reasonably, not on Form 8829 (which is for Schedule C businesses), though the Publication 587 worksheet helps with the math.

Illustration and the mileage bonus

Illustration: Fran self-manages five rental houses from a 150-square-foot office in her 1,500-square-foot home, used only for the rental business. Assumptions: the activity is a trade or business on her facts; 2026 home costs are mortgage interest $12,000, property taxes $6,000, insurance $1,800, utilities $3,600; home basis excluding land $300,000; she uses actual expenses.

• Business percentage: 150 / 1,500 = 10%
• Indirect expenses: 10% of ($12,000 + $6,000 + $1,800 + $3,600) = $2,340
• Depreciation: 10% of $300,000 = $30,000 business basis, over 39 years, about $769 for a full year
• Total home office deduction: about $3,109, well under her net rental income, so the income limit does not bind

The interest and taxes portion ($1,800) would have been deductible on Schedule A anyway if she itemizes, so the incremental benefit is larger for non-itemizers.

The mileage bonus. Publication 527 says trips between home and a rental are generally commuting unless your home is your principal place of business. With a qualifying office, Fran's drives from home to her five rentals become deductible business miles. If she drives 2,400 such miles in 2026, half before July 1 and half after, at the 2026 rates of 72.5 and 76 cents, that is $870 + $912 = $1,782 of additional deductions. For many landlords the mileage is worth more than the office.

Sale recapture and other trade-offs

When you sell your home, gain attributable to depreciation claimed (or allowable) after May 6, 1997, on the office is not eligible for the section 121 home sale exclusion and is taxed as unrecaptured section 1250 gain at up to 25% (section 121(d)(6)). The rest of the gain on a home office within the home's living area is generally still eligible for the exclusion, because the office is part of the dwelling unit. Using the simplified method avoids depreciation and therefore this recapture.

Other trade-offs:

• Audit visibility. The home office deduction draws attention mostly when it is large relative to income or when the trade-or-business status is shaky. Keep floor plans, photos and time logs.
• Passive rules. A home office deduction for a passive rental activity is part of that activity, so it may be suspended like any other passive loss.
• QBI. The deduction reduces rental QBI along with the other rental expenses.
• State conformity. Most states follow the federal rules, but check.

Reasonable stance: if you self-manage several properties as a real business and have a dedicated room, the deduction and the mileage benefit are legitimate and worth documenting. If your "business" is one condo with a property manager, skip it.