Real Estate Tax · Brief · Intro level
Home office deduction: the rules, the methods, and the recapture
The home office deduction requires exclusive and regular business use of a space that is the principal place of business. Self-employed taxpayers choose between the $5-per-square-foot simplified method and actual expenses with depreciation; W-2 employees get nothing through 2025's permanent extension of the TCJA suspension.
The home office deduction is narrower than its reputation. Section 280A(c) allows it only for a space used exclusively and regularly for business, and only if that space is the taxpayer's principal place of business (or a place for meeting clients, or a detached structure). It belongs to the self-employed: employees lost the deduction with the TCJA's suspension of miscellaneous itemized deductions, and the 2025 legislation made the suspension permanent — a remote W-2 job creates no deduction, only the possibility of an employer reimbursement under an accountable plan.
Who qualifies?
Three tests, all statutory. Exclusive use: the space serves no personal function — the standard is strict, and mixed-use rooms fail outright (narrow exceptions exist for inventory storage and daycare). Regular use: continuing, not occasional. Principal place of business: after Congress overruled Soliman in 1997, Section 280A(c)(1) includes a space used for administrative or management activities when there is no other fixed location where the taxpayer substantially performs them — the provision that qualifies contractors, consultants, and landlords who run operations from home. For a self-managed rental portfolio, the office is also part of the fact pattern supporting trade-or-business status for QBI purposes and hours for material participation logs — the deduction itself is often the least of its uses.
Simplified versus actual: the annual choice
The two methods compared for a 240-square-foot office in a 2,400-square-foot home.
| Attribute | Simplified (Rev. Proc. 2013-13) | Actual expense (§280A(c)) |
|---|---|---|
| Computation | $5/sq ft, 300 sq ft cap | 10% of utilities, insurance, repairs, etc. |
| Maximum | $1,500 | No cap (limited to business income) |
| Depreciation | None allowed | 39-year on office share of home basis |
| Recapture on sale | None | Yes — unrecaptured §1250, up to 25% |
| Recordkeeping | Square footage only | Full expense file and basis records |
| Election | Annual, either direction | Annual |
The actual method typically wins on dollars — 10% of a real house's carrying costs exceeds $1,500 — at the price of records and future recapture. Depreciation under the actual method uses the office's share of the home's basis (allocated between land and building, as ever) over 39 years as nonresidential property, reported through Form 4562 under Publication 946 rules. Either way, the deduction cannot exceed the business's income under Section 280A(c)(5); the excess carries forward — but only under the actual method.
The recapture at sale
Depreciation is the method choice's long tail. When the home sells, Section 121's exclusion (up to $250,000/$500,000) covers the gain — including the office, so long as it is within the same dwelling unit (Treas. Reg. §1.121-1(e) stopped fragmenting the exclusion in 2002) — except for depreciation claimed after May 6, 1997, which is taxed as unrecaptured Section 1250 gain at up to 25% under Section 121(d)(6). Ten years of $800 annual office depreciation is $8,000 of gain taxed at sale regardless of the exclusion. The mechanics mirror the site's fuller treatment of depreciation recapture. The deduction-now-versus-recapture-later trade usually still favors deducting — ordinary-rate savings now against 25%-capped tax later — but taxpayers who hate the ledger burden take the simplified method and skip the whole question.
Frequently asked questions
- Can W-2 employees deduct a home office?
- No. Unreimbursed employee expenses, including home offices, were suspended as miscellaneous itemized deductions by the TCJA, and the 2025 tax legislation made that disallowance permanent. Remote employees' recourse is an employer accountable-plan reimbursement, which is tax-free to the employee and deductible by the employer. The deduction remains available to the self-employed and to partners with unreimbursed partnership expenses.
- What is the simplified method for the home office deduction?
- Rev. Proc. 2013-13 allows $5 per square foot of qualifying office space, capped at 300 square feet — a maximum $1,500 deduction — with no depreciation, no expense allocation, and no depreciation recapture on later sale. Mortgage interest and property taxes remain fully deductible on Schedule A. The election is made year by year on the return.
- Does a home office hurt me when I sell my house?
- Only through depreciation. Post-May 6, 1997 depreciation claimed on the office is unrecaptured Section 1250 gain on sale, taxed up to 25%, and cannot be excluded under Section 121. An office within the dwelling does not otherwise fragment the residence exclusion. Years of simplified-method use create no depreciation and therefore no recapture.