What Is Form 8829 and How Gig Workers Use It

What Form 8829 actually does

If you drive for Uber, deliver for DoorDash, shop for Instacart, or run any kind of side business, you've probably heard other gig workers talk about "writing off" a home office. Form 8829 is the IRS paperwork behind that write-off.

Officially it's called "Expenses for Business Use of Your Home." You use Form 8829 to figure the allowable expenses for business use of your home on Schedule C and any carryover of amounts not deductible in the current year. In plain terms: it turns a slice of your rent, utilities, and home repairs into a business expense that lowers the profit you get taxed on.

The number you calculate on Form 8829 doesn't stay on that form. You calculate your home office deduction on Form 8829, line 36, and enter that amount on line 30 of Schedule C. Schedule C then feeds into Form 1040, helping lower your business income and the amount of tax you owe.

Who can actually use it

This deduction is only for people who file Schedule C as self-employed workers, not for employees. Employees cannot claim the deduction for 2018 through 2025 because unreimbursed employee expenses are suspended under the tax code. If you get a W-2 from any part of your work, that income doesn't qualify for this deduction — only your 1099 business activity does.

Even as a self-employed worker, the space has to pass a strict test. A dedicated corner can qualify if it is clearly set aside and used only for business, but a dining table used for family meals does not qualify under the regular method, and any nonincidental personal use of the office area disqualifies the entire space, not just proportionally.

For most delivery and rideshare drivers, the car is the workplace, not the house. But if you use a corner of a room strictly to log trips, handle bookkeeping, schedule shifts, or manage a small side business, that space could count — as long as it's used regularly and only for that work.

Two ways to claim a home office, and Form 8829 is only one

The IRS actually gives you a choice, and it matters because one option is a lot simpler.

The simplified method. This is a standard deduction of $5 per square foot of home used for business, with a maximum of 300 square feet. That caps the deduction at $1,500 a year. With the simplified method, you skip Form 8829 entirely and enter your deduction directly on Schedule C line 30. No receipts, no depreciation math.

The regular method (Form 8829). This is the detailed version. You deduct direct expenses in full and allocate indirect expenses by your business-use percentage, and your space must be used regularly and exclusively, and be your principal place for administrative or management activities when there is no other fixed location. There's no dollar cap here, which is why people with a lot of home expenses — a bigger mortgage, high utility bills — sometimes come out ahead using it instead.

You're not locked into one choice forever. You can switch between methods year to year; there is no lock-in period.

How the regular method is calculated

If you go the Form 8829 route, the math has a few steps. Start by measuring the space used exclusively and regularly for business, including closets serving the office, then measure the total finished living area of your home and divide the two to get your business-use percentage.

From there, the form splits your expenses into two buckets. Direct expenses, like painting or repairs in the office itself, go in one column at 100%, while indirect expenses, for running the whole home, go in another column and get the business percentage applied. Things like your internet bill, renters or homeowners insurance, and utilities usually fall into the indirect category.

Homeowners also get to add depreciation on the business portion of the home. Part III of the form works out depreciation on the business part of the home — you enter the home's basis, minus the land, and the percentage depends on the month you first used it for business. This is the part that trips people up, and it's also the part that creates a trade-off down the road: claiming depreciation now can mean owing a bit more tax when you eventually sell the home, since the IRS "recaptures" that depreciation at sale.

If your home expenses are more than your business income can absorb in a given year, you're not out of luck. Form 8829 also tracks any carryover to the next year of amounts not deductible in the current year.

The practical takeaway for gig workers

For a lot of delivery drivers and rideshare workers, the simplified method is the realistic option — it's one measurement and one multiplication, and it doesn't require saving a year of utility bills. The IRS introduced the simplified method to reduce recordkeeping burdens for small business owners, letting them skip tracking every utility bill, mortgage interest payment, and repair expense.

Form 8829 and the regular method make more sense if you have a dedicated office with real costs behind it — paying rent on a bigger place partly because of that office, for example, or carrying a mortgage with meaningful interest. In that case, running the numbers both ways before you file is worth the extra time, since the regular method has no cap and could add up to more than the simplified method's $1,500 ceiling.

Whichever way you go, the space itself has to meet the exclusive-and-regular-use test first. No home office write-off is worth claiming if the space doubles as the kids' homework table three nights a week — that disqualifies the whole deduction, not just part of it.