About

Per Diem Trip is a free calculator for U.S. federal travel per diem (GSA rates for the continental United States). It is built for federal employees, contractors and travel coordinators who need a day-by-day figure for a trip, including seasonal rates, the 75% first and last day rule and meals provided.

The site is run by an independent, non-professional publisher. It is not affiliated with, endorsed by or connected to the U.S. General Services Administration or any government agency.

Rates come from the official GSA Per Diem API and are refreshed on every build. The rules and their sources are described in the methodology.

There is no advertising, no affiliate link and no tracking on the site at this time.

Hosting

Cloudflare, Inc., 101 Townsend St., San Francisco, CA 94107, USA (Cloudflare Pages).

Updated September 29, 2026. Rates retrieved from the GSA Per Diem API on September 29, 2026. Independent tool based on GSA tables and the Federal Travel Regulation; your agency's or employer's travel policy prevails.