Calculating mileage reimbursement is simple: business miles x rate per mile. The only question is which rate to use. Many employers reimburse at their own rate, while others use the IRS standard mileage rate as a benchmark.
For details on the current IRS rate and rules, see our IRS Mileage Reimbursement Guide. If you’re a freelancer or contractor who bills clients for travel, check out our guide on how to charge mileage to customers.
Mileage Reimbursement Calculator
Default is the 2026 IRS standard business rate. Update if your employer uses a different rate.
Tip
Count only business miles, not regular commuting. Keep a simple log with date, destination, and business purpose so your totals are easy to support. W-2 employees can learn more about how reimbursement works in our guide on mileage reimbursement for employees.
Tripbook — Mileage Tracker App
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