Mileage Rate 2024 Washington State Car. Washington — the internal revenue service today issued the 2024 optional standard mileage rates used to calculate the. Irs announces 2024 mileage rates (67¢) | cardata.
Mileage rate increases to 67 cents a mile, up 1.5 cents from 2023. $0.67 cents per mile driven for business use, up 1.5 cents from 2023.