Mileage & Home-Office Deduction Calculator
Self-employed? Estimate your business mileage and home-office deductions using the 2026 IRS rates — and the tax they save.
Example: with Business miles / year 6000 mi · Home office size 150 sq ft · Your marginal tax rate 22% → Total deduction: $5,100.
- Mileage deduction$4,350
- Home-office deduction$750
- Est. tax savings$1,122
Computed by the calculator below using its default values. Change any input to see your own numbers.
Self-employed tax and expense tools
Learn moreTwo easy deductions
Two of the simplest deductions for the self-employed are business mileage (at the IRS standard rate) and the home office (via the simplified $5-per-square-foot method). Both require honest records, but neither needs you to track every actual expense.
How it’s calculated & sources
Mileage deduction = business miles × $0.725. Home-office deduction = square feet (capped at 300) × $5. Estimated tax savings applies your marginal rate to the total; self-employment tax savings can add more.
Source: IRS 2026 standard mileage rate ($0.725/mile) and the simplified home-office method ($5/sq ft, up to 300 sq ft).
Results update as you type and are general estimates, not personalized financial, tax, medical or legal advice. Verify with a professional.
Frequently asked questions
Can employees take these?
Generally no — the 2017 tax law suspended unreimbursed employee deductions, and 2025’s OBBBA made that permanent. These mainly help the self-employed and small-business owners.
Standard mileage or actual expenses?
You can use whichever is larger, but if you want the standard rate you must choose it the first year the car is in service. Keep a mileage log either way.