🚗 Mileage Reimbursement Calculator

Reimbursement = distance driven × rate per unit. For example, at the 2026 IRS standard rate of $0.725/mile, driving 100 miles for business gives 100 × $0.725 = $72.50. To use kilometers instead, switch the unit and enter your own km-based rate (1 mile ≈ 1.609 km, so dividing a per-mile rate by 1.609 gives an approximate per-km rate). The unit toggle switches labels only — the rate field is always freely editable.

The U.S. Internal Revenue Service (IRS) set the 2026 business standard mileage rate at $0.725 per mile (72.5 cents), effective January 1, 2026 — up 2.5 cents from 2025 (source: IRS official release, "IRS sets 2026 business standard mileage rate at 72.5 cents per mile, up 2.5 cents," irs.gov). This rate bundles depreciation, maintenance, insurance, and other costs of operating a personal vehicle for business, and the IRS publishes an updated figure annually for tax deduction and reimbursement purposes. This calculator provides that figure only as a convenient default — always verify the current-year official IRS rate and your own organization's policy before filing taxes or processing an actual reimbursement. Outside the U.S., many employers (including in Korea) reimburse based on actual fuel cost rather than a flat mileage rate.