The Home Office Deduction (IRC §280A(c)): Rules, Methods and Recapture
In Short
The Home Office Deduction under IRC §280A(c) lets self-employed people and other business owners deduct expenses for the part of a home used regularly and exclusively for business. It is commonly used by sole proprietors, freelancers and small-business owners who run their business from home; employees working from home generally cannot claim it.
TL;DR
- The space has to be used regularly and exclusively for business, and generally be the principal place of business or a place to meet clients [1][2].
- The simplified method allows $5 per square foot, up to 300 square feet, for a maximum of $1,500 [1][3].
- The regular method uses Form 8829, allocates actual costs, includes depreciation and is limited by business income [1].
- Employees generally cannot deduct a home office; the suspension of miscellaneous itemized deductions is now permanent [1][4].
- Depreciation taken after May 6, 1997 is taxable when the home is sold, even if the home-sale exclusion otherwise applies [1].
Quick Facts
| Legal Reference | IRC §280A(c) |
|---|---|
| Complexity | Low |
| Audit Risk | Medium |
| Setup Cost | Low — measurements, photos and expense records |
| Time to Implement | Hours — measure the space and gather expense records |
| Illustrative Example | Illustrative example, not a projection. A freelance designer uses a 200-square-foot spare room only for work. Under the simplified method, the deduction is 200 x $5 = $1,000. Under the regular method, if the room is 10% of the home, 10% of mortgage interest, taxes, insurance, utilities and depreciation could be deducted instead, subject to the business income limit. Actual results depend on the facts and the tax rates involved. |
Key Numbers & Limits
| Item | Limit or Rule | Notes |
|---|---|---|
| Simplified Method Rate | $5 per square foot | [1][3] |
| Simplified Method Maximum Area | 300 square feet | [1][3] |
| Simplified Method Maximum Deduction | $1,500 per year | No depreciation; no carryover [3]. |
| Regular Method Form | Form 8829 | For Schedule C filers [1]. |
| Recapture Start Date | Depreciation after May 6, 1997 | Taxable on sale even if §121 applies [1]. |
What Is the Home Office Deduction?
The Home Office Deduction is the deduction for business use of a home allowed by IRC §280A(c) [2]. Section 280A generally denies deductions for a home, then allows them for the part used exclusively and on a regular basis as the principal place of business, as a place to meet patients, clients or customers in the normal course of business, or for a separate structure used in the business [2]. Exceptions to the exclusive-use rule cover certain daycare facilities and storage of inventory or product samples [1][2].
A home office can be the principal place of business if it is used exclusively and regularly for administrative or management activities and there is no other fixed location where the owner conducts substantial administrative or management work [1]. Business owners can claim the deduction even if they also do work elsewhere.
Employees are in a different position. Unreimbursed employee expenses, including a home office, were miscellaneous itemized deductions, which have been suspended for tax years beginning after 2017 [1][4]. The One Big Beautiful Bill Act (Public Law 119-21) removed the end date for that suspension, so the rule now continues indefinitely [4].
How Does the Home Office Deduction Work?
- The owner identifies a specific area used only for business and on a regular basis, and confirms it meets one of the qualifying tests [1][2].
- The owner chooses a method for the year: simplified ($5 per square foot, up to 300 square feet) or regular (actual expenses) [1][3].
- Under the regular method, direct expenses for the office are deducted in full and indirect expenses such as mortgage interest, taxes, insurance, utilities and depreciation are deducted by the business-use percentage, on Form 8829 [1].
- The deduction is limited to the business's gross income from the home business; under the regular method excess amounts carry over, under the simplified method they do not [1][3].
- When the home is sold, depreciation claimed after May 6, 1997 is taxable even if the home-sale exclusion applies [1].
The Good: What Are the Benefits of the Home Office Deduction?
- The simplified method needs little recordkeeping beyond the square footage and has no depreciation recapture for the years it is used [3].
- The regular method can produce a larger deduction for larger offices or higher housing costs [1].
- The method can be changed from year to year, by choosing it on a timely filed original return [3].
- Direct expenses that apply only to the office, such as painting or repairs to that room, are deducted in full under the regular method [1].
The Bad: What Are the Drawbacks of the Home Office Deduction?
- Exclusive use means the space cannot double as a guest room or family area [1].
- The deduction cannot exceed income from the business, so it does not create a loss [1].
- The regular method takes recordkeeping and an allocation of every home expense [1].
- Employees working from home generally cannot deduct a home office [1][4].
The Ugly: What Are the Serious Risks of the Home Office Deduction?
- Depreciation claimed under the regular method after May 6, 1997 is taxed when the home is sold, even if the rest of the gain is excluded [1].
- Claiming a room that is also used personally, or overstating the square footage, can lead to disallowance and a 20% accuracy-related penalty on the underpayment [2][5].
- Employees who claim a home office on the theory that working from home makes them eligible can have the deduction disallowed [1][4].
Who Uses the Home Office Deduction?
Who It's Commonly Used By
What Are the Key Rules & Requirements for the Home Office Deduction?
- The area must be used regularly and exclusively for business, with limited exceptions for daycare and inventory storage [1][2].
- It must be the principal place of business, a place to meet clients or customers, or a separate structure used for business [2].
- Administrative or management work at home can meet the principal-place test if there is no other fixed location for it [1].
- The simplified method is $5 per square foot up to 300 square feet, with no depreciation and no carryover [3].
- The regular method is figured on Form 8829 and limited by business gross income, with a carryover [1].
- No miscellaneous itemized deductions, including unreimbursed employee home office costs, are allowed for tax years beginning after 2017 [4].
What Are Common Mistakes & Red Flags With the Home Office Deduction?
- A space that is also a guest room, playroom or family office [1].
- Square footage that does not match the floor plan.
- A W-2 employee claiming a home office [1][4].
- Ignoring depreciation recapture when selling a home used for business [1].
- Deducting the full cost of home expenses rather than the business-use percentage [1].
Frequently Asked Questions
Can I Take the Home Office Deduction if I Work From Home as an Employee?
Generally no. Unreimbursed employee expenses for a home office are miscellaneous itemized deductions, which are not allowed for tax years beginning after 2017 [1][4]. Public Law 119-21 made that suspension permanent [4].
Which Is Better, the Simplified or Regular Home Office Method?
It depends on the facts. The simplified method is capped at $1,500 and avoids depreciation and recapture [3]. The regular method uses actual costs and depreciation, so it can be larger, but it takes more records and adds recapture on sale [1]. The method can be chosen each year [3].
Does the Home Office Have to Be a Separate Room?
No. The space does not need a permanent partition, but it must be a separately identifiable area used only for business on a regular basis [1].
Sources
- Publication 587, Business Use of Your Home — Internal Revenue Service
- 26 U.S. Code §280A — Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc. — Legal Information Institute, Cornell Law School
- Simplified Option for Home Office Deduction — Internal Revenue Service
- 26 U.S. Code §67 — 2-Percent Floor on Miscellaneous Itemized Deductions — Legal Information Institute, Cornell Law School
- 26 U.S. Code §6662 — Imposition of Accuracy-Related Penalty on Underpayments — Legal Information Institute, Cornell Law School
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