How the Home Office Deduction Works
If you use part of your home exclusively and regularly for business, the IRS lets you deduct a portion of your housing costs. The deduction applies to rent or mortgage interest, utilities, internet, and renter's or homeowner's insurance—proportional to the percentage of your home used as an office.
The key word is “exclusively.” A kitchen table you also eat dinner at doesn't count. A spare bedroom converted into a dedicated workspace does. You need a defined area used only for work, and you need to use it regularly—not just for the occasional freelance project.
The IRS gives you two calculation methods. Both are legitimate, but one almost always produces a larger deduction depending on your situation.
Simplified Method ($5 per Square Foot)
The simplified method multiplies your office square footage by $5, capped at 300 square feet. Maximum deduction: $1,500. No receipts, no tracking individual expenses, no complex math. You measure your office, multiply by five, and you're done.
This method works best for small offices in low-cost areas. If your dedicated workspace is 200 square feet and your total annual housing costs are under $10,000, the simplified method often matches or beats the regular method while saving you significant bookkeeping time.
The trade-off: you can't deduct more than $1,500 regardless of your actual expenses. If you live in a high-cost city or have a large office, you're leaving money on the table.
Regular Method (Actual Expenses)
The regular method calculates your office percentage (office square feet divided by total home square feet) and applies that percentage to your actual housing expenses: rent or mortgage interest, utilities, internet, and insurance.
Office % = Office Sq Ft ÷ Total Home Sq Ft
For example, if your office is 200 sq ft in a 1,000 sq ft apartment, your office percentage is 20%. If you pay $18,000/year in rent, $2,400 in utilities, $1,200 in internet, and $600 in insurance, your total deductible expenses are $4,440 ($22,200 × 20%). Compare that to the simplified method's $1,000 (200 sq ft × $5)—the regular method saves you $3,440 more.
The regular method requires keeping records of every expense, but the payoff is substantial in high-rent markets like New York, San Francisco, or Los Angeles. To see how much of your freelance income goes to taxes overall, run your numbers through our freelance tax calculator.
How Roommates Affect Your Deduction
If you share your home with roommates, you can only deduct your share of expenses. The IRS expects you to divide shared costs (rent, utilities, insurance) by the number of people before applying your office percentage.
With two roommates splitting a $2,400/month apartment equally, your annual rent share is $9,600—not $28,800. Your office deduction is based on that $9,600. If your office is 15% of the total space, your rent deduction drops to $1,440 instead of $4,320.
Use our rent split calculator to figure out each person's fair share of rent, and the utility split calculator to divide utility costs by actual usage. Those amounts become the basis for your home office deduction.
Who Qualifies for the Home Office Deduction?
The home office deduction is available to self-employed individuals, freelancers, independent contractors, and sole proprietors. If you file a Schedule C with your tax return, you likely qualify.
W-2 employees cannot claim this deduction. The Tax Cuts and Jobs Act of 2017 eliminated the home office deduction for employees through 2025. Even if your employer requires you to work from home, you cannot deduct home office expenses as a W-2 employee on your federal return. Some states (like New York and California) still allow it at the state level.
To qualify, your space must meet two tests: exclusive use (the area is used only for business, not personal activities) and regular use (you use it consistently, not just occasionally). A closet you converted into a recording studio that you use daily qualifies. A living room couch where you sometimes check email does not.