Irs Per Diem Guidelines 2024. The irs announced the special per diem rates effective october 1, 2023, which taxpayers may use to substantiate the. For 2023, the standard mileage rate for the cost of operating your car for business use is 65.5 cents ($0.655) per mile.
The irs per diem rates for 2024 have been updated, impacting how businesses and employees handle travel. As of october 1, 2024, the special meals and incidental expenses (m&ie) per diem rates for taxpayers in the transportation industry are $80 for any locality of.