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Home Office Business-Use Share
Turn the office area and the home area into a business-use share, then apply that share to the shared costs you choose.
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Enter only the details needed for this task. Check them against the original source.
Your result
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Source notes
- U.S. Internal Revenue Service — Home Office Deduction
The IRS describes the simplified and regular methods for the home office deduction and the exclusive-use requirement.
Reviewed 2026-10-10. Eligibility depends on exclusive and regular use. Publication 587 has the current rules.
What this App does not do
This App measures a share from the square footage you enter. It does not decide whether your space qualifies for the deduction or replace IRS guidance.
This free App has no paid features. It does not contact an agency, employer, bank, seller, provider, or other person.