2024 Mileage Rate Increase 2024.  — the irs has announced the new standard mileage rates for 2024. On december 14, 2023, the internal revenue service (irs) announced an increase in the optional standard mileage rate for tax year 2024.

Washington — the internal revenue service today issued the 2024 optional standard mileage rates used to calculate the deductible costs of operating an.  — the irs has announced the new standard mileage rates for 2024.