Mileage Rate 2024 Washington State Tax. The rate has increased by 1.5 cents and is now 67 cents per mile. The rate for medical or moving purposes in 2024 decreased to 21 cents per mile,.

Washington — the internal revenue service today issued the 2024 optional standard mileage rates used to calculate the deductible costs of operating an automobile for business, charitable, medical or moving purposes. $0.67 cents per mile driven for business use, up 1.5 cents from 2023.