Home Office Deduction in 2026
If you are self-employed and work from home, the home office deduction is one of the few tax breaks that pays you for space you already own. You choose between two methods each year: the simplified ($5 per square foot, capped at 300 sq ft) or the actual (your real home costs allocated by office size). This guide walks through both and the rules that decide whether you qualify.
First: do you qualify at all?
The space must be used regularly and exclusively for business — a desk in the corner of the bedroom used for both work and streaming does not qualify. The office must be your principal place of business (where you do your main work) or where you meet clients. There is no minimum size, no room-with-a-door requirement, and no rule that the space has to be a separate room — but the exclusive-use test is strict.
And one big change people miss: W-2 employees can no longer claim it. Since the 2018 tax law, the deduction is available only to the self-employed: sole proprietors, independent contractors, and business owners.
The simplified method
Multiply your office square footage by $5, capped at 300 sq ft — a $1,500 maximum. No receipts, no depreciation, no allocation math. It is the fast option and the right one when your home costs are low or you would rather not track them. The catch: you cannot also deduct depreciation, and the deduction cannot be carried forward as a loss.
The actual method
Add your direct expenses (things spent only on the office: a dedicated desk, office-only repairs, a separate computer) to your business share of indirect costs: office area ÷ home area × utilities, rent or mortgage interest, insurance, internet. You may also depreciate the business portion of the home — which gets recaptured as ordinary income when you sell.
The actual method cannot create or increase a business loss for the home-office portion; it is limited to your business income. That is the main practical constraint.
Worked example
A 150 sq ft office in a 1,500 sq ft home, with $500 of direct expenses and $12,000 of indirect costs:
| Method | Calculation | Deduction |
|---|---|---|
| Simplified | 150 × $5 | $750 |
| Actual | $500 + (150/1,500) × $12,000 | $1,700 |
The actual method wins by $950 here — at a 22% marginal rate that is $209 more saved. At 22%, the actual deduction of $1,700 saves $374 vs $165 for simplified. The home office calculator compares both for your exact numbers.
Switching between methods
You may choose either method each year — nothing locks you in. The simplified method is attractive when indirect expenses are low or you value simplicity; the actual method wins once home costs (especially rent or a mortgage) are high. Many filers use simplified in lean years and actual in expensive ones.
Does it trigger an audit?
The old stereotype is outdated. The exclusive-use rule is the real test, and tax pros say a well-documented home office is less risky than a sloppy one. Keep a floor-plan sketch, photos, and a note of the square footage so you can prove the space if asked.
Related tools
Pair it with the self-employment tax calculator, the mileage deduction calculator, and the SE health insurance deduction to build your full Schedule C picture.