IRS Mileage Reimbursement Calculator

Drivers who use a personal vehicle for business, medical, or charitable purposes can convert those miles into a deductible dollar figure, and the rate depends entirely on why the trip was made. For the 2026 tax year, the IRS standard mileage rates are projected at $0.69 per mile for business travel, $0.23 per mile for medical and moving trips, and $0.16 per mile for driving in service of a qualified charity. Getting the category right matters because each one carries a very different value.

The math behind each result is simple multiplication: miles logged in a category times that category's rate. Enter 100 business miles and the tool applies the $0.69 business rate to produce the deduction. The standard mileage approach folds the average cost of fuel, maintenance, insurance, and depreciation into a single per-mile figure, which spares you from itemizing every individual receipt for the vehicle.

Documentation is what protects the deduction if the IRS ever asks, so keep a contemporaneous log of dates, destinations, and the business reason for each trip. Personal errands and the daily commute between home and a regular workplace do not qualify, even when they happen during a workday. One more limitation worth noting: if you began using the standard mileage rate for a vehicle, you cannot switch to claiming actual expenses on that same car within the same year.