Self-employed deductions
Home office deduction for self-employed people
A desk at home does not automatically create a home office deduction. For a self-employed person, the answer starts with how a specific area is used and what role the home plays in the business.
Once the space qualifies, the simplified and actual-expense methods can produce different results and different recordkeeping needs.
The short version
- Establish exclusive, regular business use and a qualifying business purpose before comparing deduction methods.
- The simplified method is easier to calculate, but it does not relax the qualification rules or preserve unused amounts.
- Keep evidence of the workspace, business use, income limit, expenses, and method chosen for each year.
In this guide
Start with self-employed business use
This guide focuses on people using a home in their own trade or business, such as sole proprietors filing Schedule C. Working from home for an employer is different: employees cannot turn employer-required workspace into a Schedule C expense.
The activity must be a trade or business, not merely a hobby or personal investment. With multiple businesses, qualify each use separately. Identify the business, home area, and dates the use began or changed before calculating the deduction.
Test the space for exclusive and regular use
A specific room or separately identifiable area ordinarily must be used only for business and used regularly. A permanent wall is unnecessary, but a kitchen table cleared after work or a guest room used by visitors generally fails exclusive use. Occasional business use is not regular use.
Only two exceptions relax exclusive use. Inventory or product-sample storage can qualify under detailed conditions, including that the home is the wholesale or retail business’s only fixed location. A qualifying daycare can also use space nonexclusively, subject to state authorization requirements and a time-use calculation.
Connect the workspace to a qualifying business purpose
The area may qualify as the principal place of business, a place used regularly to meet patients, clients, or customers in the normal course of business, or a separate structure used exclusively and regularly in the business. A separate structure need not be the principal business location, but it cannot be attached to the home.
A home office can be the principal place of business when it is used exclusively and regularly for administrative or management work and no other fixed location handles substantial work of that kind. Performing revenue-producing work at client sites does not automatically disqualify it. Document where scheduling, billing, recordkeeping, and purchasing actually occur.
Compare simplified and actual expenses
The simplified method generally multiplies the qualified area by $5 per square foot, limited to 300 square feet. Part-year use, a move, workspace changes, shared space, or multiple qualified uses can reduce the area. The method does not permit separate actual home-use expenses or depreciation for the same use, although unrelated business expenses retain their ordinary treatment.
The actual method allocates eligible indirect costs, such as rent, utilities, insurance, and general repairs, using a reasonable business percentage. Direct costs for the qualified area and costs for unrelated personal areas receive different treatment. Homeowners also calculate business-part depreciation, which can affect basis and a later sale.
Apply the income limit and method-specific carryover rules
The simplified deduction is limited to business income remaining after expenses unrelated to the home. The actual method has its own ordering and income-limit rules, including separate treatment for otherwise-deductible mortgage interest and real estate taxes. Work through the appropriate worksheet before claiming the full calculated amount.
Unused amounts differ. Actual expenses may carry to a later actual-method year, subject to that year’s limit. An amount blocked under the simplified method does not carry forward, and an older actual-method carryover cannot be used in a simplified-method year. The simplified method must be elected on a timely filed original return and cannot be changed for that year. You can choose a different eligible method in a later year.
Build a record that supports the federal and North Carolina returns
Keep dated measurements or a floor plan, workspace photographs, the qualifying business purpose, and dates of any change. For actual expenses, retain bills, payment proof, allocation calculations, Form 8829, and depreciation schedules. For simplified expenses, retain area and monthly-use facts plus the worksheet and income-limit calculation. Keep basis and improvement records when depreciation was claimed.
North Carolina individual income tax starts with federal adjusted gross income, then applies state adjustments. A Schedule C home-office result enters that starting point rather than becoming a second state deduction. Review current D-400 Schedule S instructions, particularly when depreciation or another federal provision differs for North Carolina.
Sources and further reading
Let’s work through it
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