WASHINGTON — The Internal Revenue Service today announced that the optional standard mileage rate for business use of automobiles will increase by 2.5 cents in 2026, while the mileage rate for vehicles used for medical purposes will decrease by half a cent, reflecting updated cost data and annual inflation adjustments.
Optional standard mileage rates are used to calculate the deductible costs of operating vehicles for business, charitable, and medical purposes. Additionally, the optional











