Irs Per Diem Guidelines 2024.  — the irs makes it easy for business travelers by allowing the use of “per diem” rates, which are daily allowances to compensate for lodging, meals and incidental expenses incurred on business trips. Taxpayers can use these rates to substantiate the amount of expenses for lodging, meals and.

1, which taxpayers can use to substantiate the amount of expenses for lodging,. For 2023, the mileage rate is $0.655 per mile,.