Tax Calculator
Home Office Deduction
Compare the Simplified Method ($5/sq ft) versus the Regular Method (actual expenses) and find the larger deduction for your tax return.
Eligibility Requirements
Your home office must be used regularly and exclusively for business, and it must be your principal place of business (or where you meet clients). W-2 employees working from home no longer qualify after the 2017 TCJA.
Office Space
The area used exclusively for business
Annual Home Expenses
Required for the Regular Method only. Leave blank to compare simplified method alone.
Annual rent paid, or mortgage interest (not principal)
Electric, gas, water — annual total
Annual real estate / property tax paid
Whole-home repairs — prorated by your business use %
Repairs exclusively for your office space — 100% deductible
Your Tax Situation (for savings estimate)
Used only to estimate your marginal tax rate
Assumptions (2026): Estimates use 2026 federal rates published by the IRS in Rev. Proc. 2025-32: standard deduction $16,100 single / $32,200 joint, Social Security wage base $184,500, self-employment tax 15.3% (12.4% Social Security + 2.9% Medicare). Figures do not include state tax, AMT, the additional 0.9% Medicare surtax, or the qualified business income deduction.
The simplified method allows $5 per square foot up to 300 square feet. Your marginal rate is derived from the income and filing status entered above, before any state tax or qualified business income deduction.
Figures last reviewed September 2026.