Wealthy PotHome Office Deduction: Who Qualifies and How to Calculate It
The home office deduction lets a self-employed person deduct part of the cost of their home when a space in it is used regularly and exclusively for their business. The IRS offers two ways to calculate it: a simplified method at $5 per square foot, capped at 300 square feet (a maximum of $1,500), or the regular method, which deducts the business share of your actual housing costs. What it is not is a deduction for employees working from home: that ended in 2018, and the One Big Beautiful Bill Act made the change permanent. This page covers who qualifies, both methods, and which one tends to pay more.
The Short Answer
- Who can claim it: the self-employed, including freelancers, sole proprietors and side businesses. Not W-2 employees, even if they work from home full time.
- The space must be used regularly and exclusively for the business, and be your principal place of business or a place where you meet clients. A corner of the kitchen table does not qualify.
- Simplified method: $5 per square foot, up to 300 square feet, so at most $1,500 a year. Little recordkeeping, no depreciation.
- Regular method: the business percentage of rent or mortgage interest, utilities, insurance, repairs and depreciation, figured on Form 8829. More paperwork, often a larger deduction.
- Either way, the deduction cannot exceed the income from the business use of your home, less other business expenses.
Employees Cannot Claim It
The most common question gets the least welcome answer. The IRS says taxpayers "can no longer claim a deduction for use of a home office as an employee, as miscellaneous itemized deductions for employee business expenses were eliminated for tax years beginning after 2017, even if the simplified method is used."
That suspension was originally set to expire after 2025. It did not. Section 70110 of Public Law 119-21 struck the "before January 1, 2026" end date from section 67(g) of the tax code, so miscellaneous itemized deductions stay terminated for tax years beginning after 2017 with no end date. For 2026 and beyond, a W-2 employee who works from home has no federal home office deduction. If you are both an employee and self-employed on the side, the side business can qualify on its own merits.
The Tests Your Space Must Pass
IRS Publication 587 sets out the conditions. You must use part of your home exclusively and regularly in one of these ways:
- As your principal place of business.
- As a place where you meet or deal with patients, clients or customers in the normal course of business.
- As a separate structure, such as a detached studio or garage, used in the business.
Exclusive use. "You must use a specific area of your home only for your trade or business." It can be part of a room, and "does not need to be marked off by a permanent partition," but any personal use disqualifies it. Pub 587's own example: an attorney who writes briefs in a den the family also uses for recreation cannot deduct it.
Regular use. "Incidental or occasional business use is not regular use."
A trade or business. Managing your own investments does not count. Pub 587's example of someone who reads financial reports and clips bond coupons at home, without being a broker or dealer, fails this test.
Principal place of business does not require that you do all your work there. A home office qualifies if you use it "exclusively and regularly for administrative or management activities" of the business and "have no other fixed location where you conduct substantial administrative or management activities." A plumber who works at customers' homes but does the billing and scheduling from a home office can qualify.
Two exceptions to exclusive use. Space used regularly to store inventory or product samples, and space used for a licensed daycare business, can qualify even with some personal use, under conditions set out in Pub 587.
Simplified vs Regular Method
| Simplified method | Regular method | |
|---|---|---|
| How it is figured | $5 × square feet used, up to 300 sq ft | Business percentage of actual home expenses |
| Maximum | $1,500 | No fixed cap (subject to the income limit) |
| Records | Square footage and qualifying use | All home expenses, receipts, and the percentage calculation |
| Mortgage interest and property tax | Claimed in full on Schedule A if you itemize | Split between Schedule A and your business schedule |
| Depreciation | None | Depreciation on the business part of the home |
| On a later sale | No depreciation recapture | Depreciation recaptured on the gain |
| Excess over the income limit | Cannot be carried over | Can be carried over |
You can choose either method each year: "You choose a method by using that method on your timely filed, original federal income tax return," and once chosen for a year it cannot be switched for that same year. Switching between years is allowed.
Worked Example: Which Method Pays More
Hypothetical example, for illustration only. A freelance designer rents a 1,500 sq ft apartment and uses a 150 sq ft spare room only for work. The business-use percentage is 150 ÷ 1,500 = 10%.
| Annual cost | Amount | Business share (10%) |
|---|---|---|
| Rent | $21,600 | $2,160 |
| Utilities | $2,400 | $240 |
| Renters insurance | $240 | $24 |
| Regular method total | $2,424 | |
| Simplified method (150 sq ft × $5) | $750 |
Here the regular method gives more than three times the deduction. The pattern is general: renters in higher-cost housing often do better with the regular method, because rent is fully apportionable and there is no depreciation to recapture later. The simplified method tends to win when the office is small, housing costs are low, or you own the home and want to avoid depreciation recapture and the extra paperwork.
For a self-employed person the deduction also reduces self-employment tax, not just income tax, because it reduces net profit on Schedule C.
The Income Limit, and Selling Your Home
The deduction cannot create a loss. Under both methods the deduction "cannot exceed gross income from business use of home less business expenses." A new business with little income may get a smaller deduction than the calculation suggests. Under the regular method, the excess carries over to future years; under the simplified method it is lost.
Depreciation comes back when you sell. A homeowner using the regular method depreciates the office portion of the home. When the home is later sold, that depreciation is recaptured on the gain, and the home sale exclusion covered in our capital gains tax guide does not shelter it. The simplified method has "no recapture of depreciation upon sale of home" because no depreciation is taken.
Sources & Methodology
- IRS Publication 587, Business Use of Your Home, for the qualification tests, examples, and exceptions to exclusive use (current edition is for 2025 returns; the rules are not year-specific).
- IRS, Simplified option for home office deduction, for the $5 and 300-square-foot figures, the method comparison and the employee rule.
- Public Law 119-21, section 70110, which made the termination of miscellaneous itemized deductions permanent.
The worked example is our own arithmetic on hypothetical costs.
FAQ
Can I claim the home office deduction if I work from home for my employer?
No. Employee home office costs were a miscellaneous itemized deduction, eliminated from 2018, and Public Law 119-21 made that permanent. Only self-employed work qualifies.
How much is the simplified home office deduction?
$5 per square foot of qualifying space, up to 300 square feet, so a maximum of $1,500 a year.
Does my home office need to be a separate room?
No. A separately identifiable area of a room can qualify, but it must be used only for business, and regularly.
Can I use the home office deduction if I rent?
Yes. Under the regular method, the business percentage of your rent is deductible, along with the same share of utilities and insurance.
Can I switch between the simplified and regular method?
Yes, from one year to the next. You pick the method on your original, timely filed return for that year, and cannot change it later for the same year.
Is the home office deduction a red flag for an audit?
The IRS does not publish audit triggers. What matters is meeting the tests and keeping records: measurements, photos of the space, and, for the regular method, the expense receipts.
This article is for general information and is not tax advice. Rules are from IRS Publication 587, the IRS simplified-option guidance and Public Law 119-21, checked against the primary sources on 2026-09-30. The example is hypothetical; consider a tax professional if you own your home or use the space for more than one purpose.
