Mileage Reimbursement Calculator - Travel Cost Estimate

Mileage reimbursement pays a driver for using a personal vehicle on business. Employers, nonprofits, and self-employed people often multiply miles or kilometers by a cents-per-unit rate. In the United States, many organizations start from the IRS standard mileage rate, which changes over time and can differ for business, medical, and charitable driving. This calculator does not lock in a government rate; you enter whatever rate your policy uses. The formula is Reimbursement = Distance × Rate. If you enter a tax rate, Estimated tax = Reimbursement × Tax / 100 and Net = Reimbursement − Tax. The distance unit selector labels the trip as miles or kilometers; it does not convert the rate. A 0.67 dollar-per-mile rate applied to 100 kilometers would be inconsistent unless your policy truly pays that rate per kilometer. Keep the rate and the distance unit on the same basis. Accountable-plan reimbursements in the United States may be tax-free up to the IRS rate when substantiation rules are met. Amounts above that rate, or payments made under a nonaccountable plan, can be taxable wages. The optional tax field is therefore a planning overlay, not a conclusion that mileage pay is always taxed. Many employees receive the full reimbursement with no withholding. Contractors may owe self-employment tax on mileage billed as income, which is a different question from employer withholding. Use the calculator for a sales trip, a volunteer mileage log, or a monthly expense report. Enter only business distance if your policy excludes commuting. If a trip mixes personal and business errands, allocate miles according to the policy rather than padding the total. Receipts, odometer logs, and mapping printouts still matter when an auditor or payroll team reviews the claim. Rates, tax treatment, and documentation rules should be confirmed against the current IRS publication or your employer handbook.