2024 Per Diem Rates Gsac. Mileage reimbursement rates reimbursement rates for the use of. Per diem rates gsa establishes the rates that federal agencies use to reimburse their employees for lodging and meals and incidental expenses incurred while on official travel within the continental united states (conus).

Now that we understand what per diem rates are and how they’re broken down, here’s a summary of the different gsa per diem rates for the continental u.s. “per diem” means “per day,” so per diem rates are a daily allowance for employees who are traveling for business purposes.