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Deductions · 3 MIN READ

The home office deduction starts with how you use the space

Check whether your workspace qualifies, compare the calculation methods, and keep the records that explain your claim.

U.S. federal tax education reviewed September 10, 2026. Cited annual filing publications and instructions are for tax year 2025 unless a source identifies another edition. Verify the guidance for the year you are filing.

Working from home does not automatically make part of every household bill deductible. For a self-employed person, the first question is whether the workspace meets the qualification rules. The calculation comes afterward. Begin by describing where the work happens, how regularly you use that area, and whether the same space also serves personal purposes.

Check regular and exclusive business use

A home office generally must be used regularly and exclusively for business. It commonly qualifies as the principal place of business, although other qualifying arrangements exist, including certain client-meeting spaces and separate structures. Special exceptions apply to some inventory storage and daycare activities.

For a freelance editor, a clearly identified workspace used only for the business raises different facts from a dining table shared with family meals. Record the actual use of the area instead of assuming that the presence of a computer establishes eligibility.

Consider where administration happens

A home office can qualify as a principal place of business when you use it exclusively and regularly for administration or management and have no other fixed location where you perform substantial administrative or management work. Working at client locations does not automatically rule it out.

Write down where you invoice clients, maintain records, schedule work, and manage projects. Note any office or studio you also use. This short description helps explain your operating arrangement without reducing the question to where you spend the most hours.

Compare the simplified and regular methods

The simplified option uses $5 per qualifying square foot, up to 300 square feet, subject to its limits. It changes the calculation, not the eligibility tests. A full-year qualifying 120-square-foot office would start with a $600 calculation before applicable limitations.

The regular method uses actual eligible expenses and an appropriate business-use allocation. Household expense records and, for owners, depreciation questions become relevant. Compare the methods using your own facts rather than assuming that the method with fewer records always produces the preferable result.

Account for changes during the year

Income limits can restrict the deduction. Under the simplified method, part-year use and changes in the qualifying area affect the calculation. The simplified method also has different carryover and depreciation treatment from the regular method.

If you move in August or convert the workspace into a guest room, record the date and measure the relevant area. Keep a simple floor plan and a dated description of the use. These details help a preparer apply the appropriate calculation instead of treating a changing workspace as a full-year arrangement.

Prepare the facts before choosing a deduction

Assemble the measurements, business-use description, dates, and actual home expense records in one folder. Include prior home-office worksheets if you claimed a deduction before. Flag any space shared with another business or another person so the arrangement receives a specific review.

For example, a developer who rents a coworking desk and also keeps a dedicated room at home should describe the tasks performed in both places. That factual explanation is more useful than simply calling one space the main office. Review the applicable year’s guidance and keep the final calculation with the filed return.

THE IDEA TO TAKE WITH YOU

Establish that the space qualifies before comparing methods or allocating household expenses.

General education for freelancers and self-employed people; not individualized tax advice. A qualified tax professional can apply the rules to your business and return.

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