Free 2026 Mileage Deduction Calculator

1. Enter business miles driven for eligible business use.
2. Enter any reimbursements already received.
3. Review gross and net mileage deduction estimates.

Multiply business miles by the current standard mileage rate, then subtract reimbursements to estimate the net unreimbursed deduction amount.

For 2026, 1,000 business miles at 72.5 cents per mile gives a $725 gross mileage deduction before reimbursements.

Year scope: Use the year selector or year note on the calculator itself when comparing thresholds, rates, deductions, or credit limits.

This calculator is maintained against official IRS, SSA, and other primary-source guidance where applicable. Review the sources page and editorial methodology page to verify update practices.

Estimate business mileage deductions using the current IRS optional standard mileage rate and any reimbursements received.

Estimate only. Eligibility, substantiation, vehicle method choice, and reimbursement rules can change final filing treatment.