Home office deduction: who qualifies and how to calculate it

Q: Who can claim the home office deduction?

Self-employed people who use part of their home regularly and exclusively as their principal place of business — or to meet clients, or as a separate structure used for the business. W-2 employees generally cannot claim it on their federal return through 2025 under current law. The space must be used only for business: a kitchen table you also eat at doesn't qualify.

Q: How do I calculate the home office deduction?

Two methods. The simplified method deducts $5 per square foot of office space up to 300 square feet — a maximum of $1,500, no receipts required. The actual-expense method takes the business-use percentage of your home (office square footage ÷ total square footage) and applies it to rent or mortgage interest, utilities, insurance, repairs, and depreciation. Pick whichever gives the bigger deduction; you can switch year to year. See IRS Publication 587 and Form 8829.

If you run your business from home, a slice of your rent, utilities, and insurance can become a deduction. Here's who qualifies and the two ways to calculate it.

Updated June 2026

The two-part qualifying test

To deduct a home office, the space has to pass both halves of one rule — regular and exclusive use:

Regular — you use it for business on a continuing basis, not just now and then.
Exclusive — that area is used onlyfor business. A spare room that's your office passes; the dining table you also eat dinner at does not.

It also has to be your principal place of business— where you do most of your work or your management and admin — or a place you regularly meet clients, or a separate structure (like a detached studio). A dedicated corner of a room can count if it's used exclusively for work.

Method 1: simplified

Deduct $5 per square foot of office space, up to 300 sq ft — so a maximum of $1,500. No receipts, no depreciation tracking. Best when your office is small or your home costs are modest.

Method 2: actual expenses

Figure your business-use percentage (office sq ft ÷ total home sq ft), then deduct that share of:

Rent, or mortgage interest and property tax
Utilities — electricity, gas, water, internet
Homeowners or renters insurance
Repairs and maintenance that benefit the whole home
Depreciation (homeowners)

More paperwork, but often a bigger deduction if you rent in an expensive area or have a large office. File it on Form 8829.

You can choose whichever method gives the larger deduction each year. Taxottic stores your office and total square footage once, then computes both methods and applies the better one to your forecast — so you don't leave money on the table.

Frequently asked

Who can claim the home office deduction?

Self-employed people who use part of their home regularly and exclusivelyas their principal place of business — or to meet clients, or as a separate structure used for the business. W-2 employees generally cannot claim it on their federal return through 2025 under current law. The space must be used only for business: a kitchen table you also eat at doesn't qualify.

How do I calculate the home office deduction?

Two methods. The simplified method deducts $5 per square foot of office space up to 300 square feet — a maximum of $1,500, no receipts required. The actual-expense method takes the business-use percentage of your home (office square footage ÷ total square footage) and applies it to rent or mortgage interest, utilities, insurance, repairs, and depreciation. Pick whichever gives the bigger deduction; you can switch year to year. See IRS Publication 587 and Form 8829.

Can I claim a home office if I'm a W-2 employee?

Generally no, not on your federal return. The unreimbursed-employee home office deduction is suspended for employees through 2025 under the Tax Cuts and Jobs Act. If you're self-employed — even as a side gig — you can still claim it for that business. A few states allow an employee version on the state return, so check your state's rules.

This guide is general information, not tax, legal, or accounting advice, and isn't a substitute for a licensed CPA or tax attorney. Tax rules change and depend on your situation; figures here are illustrative. Verify specifics against current IRS guidance or with your preparer.