Home Office Deduction: Methods, Limits, and Recapture

If you’re self-employed and use part of your home exclusively and regularly for business, the home office deduction lets you write off either a flat $5 per square foot (capped at $1,500 for 300 square feet) or a prorated share of your actual housing costs with no fixed ceiling. The actual expenses method almost always produces the bigger deduction, but it requires real recordkeeping and can create a tax bill when you eventually sell the house. The simplified method trades a lower ceiling for near-zero paperwork.¹

Who Can Claim It

The deduction is for self-employed people: freelancers, independent contractors, and sole proprietors who run a business from home. Employees who work remotely for a company cannot claim it. The Tax Cuts and Jobs Act of 2017 suspended the underlying employee deduction starting in 2018, and the One Big Beautiful Bill Act signed in 2025 made that elimination permanent.²

Exclusive and Regular Use

The space you claim has to be used exclusively and regularly for business. “Exclusively” means no double duty. If your office also serves as a guest room, or your kids do homework at your desk, the space fails the test. “Regularly” means ongoing, consistent business use, not the occasional weekend answering emails at the dining table.²

Principal Place of Business

Your home office also has to be your principal place of business. You can still leave the house for work. A plumber who handles billing, scheduling, and bookkeeping from a home office qualifies even though the plumbing itself happens at clients’ properties, as long as no other fixed location exists where those administrative tasks get done.²

Detached Structures

A converted garage, backyard studio, or freestanding workshop qualifies under a slightly looser rule. A detached structure doesn’t need to be your principal place of business; it just needs to meet the exclusive and regular use tests. A woodworker who uses a separate barn solely for their craft qualifies even if they also rent commercial studio space elsewhere.³

Two Narrow Exceptions

Licensed daycare providers can claim the deduction even when the space serves personal purposes part of the time. The deduction gets scaled down by the percentage of time the space is actually used for daycare.³ Sellers who store inventory or product samples at home also get an exception, provided the home is the only fixed location of the business, storage use is regular, and the space is a separately identifiable area suitable for storage.²

The Simplified Method: $5 Per Square Foot

Multiply $5 by the square footage of your business space, up to 300 square feet. That puts the annual ceiling at $1,500. You measure the workspace, do the math, and that’s the whole exercise. No utility bills to track, no insurance premiums to sort through, no maintenance invoices to save.¹

What you give up: you can’t claim depreciation on the business portion of your home for any year you use this method, and you can’t carry unused expenses forward to future years.¹ For a small workspace and modest housing costs, the simplified method often lands close to what actual expenses would produce. For a large office or an expensive home, $1,500 leaves real money on the table.

The Actual Expenses Method: No Fixed Cap

The actual expenses method deducts a prorated share of what you really spend to keep the house running. More paperwork, bigger deductions.

Business Percentage

Divide the square footage of your office by the total square footage of your home. A 250-square-foot office in a 2,000-square-foot house comes to 12.5 percent. That percentage applies to costs that benefit the whole house.³

Direct vs. Indirect Expenses

Direct expenses apply only to the office itself: repainting the office walls, fixing a broken window in that room, installing dedicated lighting. Those are deductible in full. Indirect expenses benefit the whole home: mortgage interest or rent, property taxes, homeowners insurance, utilities, and general repairs. You deduct only the business percentage of those. If your electricity for the year runs $2,400 and your business percentage is 12.5 percent, you deduct $300 of it.³

Depreciation

Homeowners can also deduct depreciation on the business portion of the home. Under MACRS, that portion is treated as nonresidential real property and depreciated straight-line over 39 years. If the business portion of your home’s depreciable basis is $39,000, that’s $1,000 per year in depreciation. It’s modest annually, meaningful over time, and it has a consequence when you sell.³

Income Cap and Carryforward

Your total home office deduction under this method can’t exceed the gross income from the business use of your home. You can’t create a business loss with it. Any expenses you couldn’t use because of that limit carry forward to the next tax year, and the year after that, until you can absorb them. That carryforward doesn’t exist under the simplified method.³

Which Method Should You Use

You pick a method each year and don’t need IRS permission to switch. Once you file the return, though, the choice is locked in for that year.³

One wrinkle: if you have a carryforward balance from a prior actual-expenses year and switch to the simplified method, you can’t use those carried-forward expenses during the simplified year. They wait for you to switch back. For most people with housing costs above roughly $1,000 per month and a dedicated office of at least 200 square feet, actual expenses will beat the simplified method. Running both calculations before filing takes about 20 minutes.⁴

How to Claim It on Your Return

For the actual expenses method, you file Form 8829, Expenses for Business Use of Your Home. The form takes you through square footage, business percentage, direct and indirect expenses, depreciation, and the gross income limit. The final number transfers to line 30 of Schedule C.⁵

For the simplified method, skip Form 8829 and enter the deduction directly on Schedule C. Either way, the deduction reduces your net business profit, which cuts both your income tax and your self-employment tax. Self-employment tax hits 92.35 percent of your net Schedule C profit, so every dollar of home office deduction saves you roughly 15.3 cents in SE tax on top of the income tax savings.⁶

The Catch: Depreciation Recapture When You Sell

If you’ve claimed depreciation using the actual expenses method, selling the house triggers a tax bill many people don’t anticipate. You can normally exclude up to $250,000 of gain on the sale of a principal residence ($500,000 for joint filers) under Section 121. The exclusion does not cover depreciation you previously deducted.⁷

Any depreciation claimed after May 6, 1997, is recaptured as income at sale. It’s classified as unrecaptured Section 1250 gain and taxed at up to 25 percent regardless of your regular capital gains rate. Depreciate $10,000 over the years and you’ll owe as much as $2,500 on that amount, even if the rest of your gain is fully excluded.⁸

For a home office inside the living area, the rest of the gain attributable to that space generally still qualifies for the Section 121 exclusion if you meet the ownership and use tests. If the office is in a separate structure or a portion used exclusively for business and not as part of the residence, the gain allocated there may not qualify for the exclusion at all and gets reported on Form 4797.⁸

This is why some people deliberately stick with the simplified method. No depreciation deducted, nothing to recapture. If you expect to sell within a few years, the annual depreciation savings may not be worth the bill at closing.

Records to Keep

Hold onto everything you used to calculate the deduction for at least three years after filing: utility bills, insurance statements, mortgage interest forms or rent receipts, repair invoices, and your square footage measurements. That window matches the general IRS assessment period.⁹

If you’re depreciating, keep records longer, ideally for the whole time you own the home plus three years. You’ll need the original basis, improvement costs, and annual depreciation figures to calculate recapture correctly when you sell. Reconstructing a depreciation schedule years after the fact is the kind of task a labeled folder of receipts avoids.

1
Internal Revenue Service. Simplified Option for Home Office Deduction
2
Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc.
3
Internal Revenue Service. Publication 587 (2025), Business Use of Your Home
4
Internal Revenue Service. Topic No. 509, Business Use of Home
5
Internal Revenue Service. About Form 8829, Expenses for Business Use of Your Home
6
Internal Revenue Service. 2025 Instructions for Form 8829 – Expenses for Business Use of Your Home
7
Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence
8
Internal Revenue Service. Publication 523 (2025), Selling Your Home
9
Internal Revenue Service. Topic No. 305, Recordkeeping