Government Per Diem 2025. Federal per diem rates are published each fiscal year on the general services administration website. Each october, this site is updated with the new rates.
The general services administration (gsa) announced per diem rates for fiscal year (fy) 2025, which starts on october 1. Federal employees on official travel will soon enjoy another bump in reimbursable travel costs, as the general services administration has increased per diem rates for lodging.