Per Diem Rates 2025 Chicago. 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. Oct 1, 2023 to sept 30, 2024 :

Negotiated conference lodging rates will be reimbursable. The general services administration (gsa) has released the per diem rates for fiscal year 2025.