Laws, regulations, and reference documents | GSA Countdown to America's 250th Anniversary: close Official websites use .gov .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS lock or means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Laws, regulations, and reference documents GSA Reference contains copies or extracts of executive orders, laws, and regulations that relate directly to GSA. Documents posted here are for reference only. Visit the National Archives and Record Administration Federal Register website or the Library of Congress’ THOMAS website for an official text version. You can find GSA congressional testimony, speeches by the administrator and key officials, news releases, and other selected information in our GSA Newsroom Print Page Email Page Top Choose a location Error, The Per Diem API is not responding. Please try again later. No results could be found for the location you've entered. Get my location OR State City (optional) OR ZIP Rates for Alaska, Hawaii, and U.S. territories and possessions are set by the Department of Defense. Rates for foreign countries are set by the Department of State. Choose a date Select fiscal year OR Travel start date (mm/dd/yyyy) Travel end date (mm/dd/yyyy) Rates are available between 10/1/2023 and 09/30/2026. The End Date of your trip can not occur before the Start Date. Additional terms and conditions Traveler reimbursement is based on the location of the work activities and not the accommodations, unless lodging is not available at the work activity, then the agency may authorize the rate where lodging is obtained. Unless otherwise specified, the per diem locality is defined as "all locations within, or entirely surrounded by, the corporate limits of the key city, including independent entities located within those boundaries." Per diem localities with county definitions shall include "all locations within, or entirely surrounded by, the corporate limits of the key city as well as the boundaries of the listed counties, including independent entities located within the boundaries of the key city and the listed counties (unless otherwise listed separately)." When a military installation or Government - related facility(whether or not specifically named) is located partially within more than one city or county boundary, the applicable per diem rate for the entire installation or facility is the higher of the rates which apply to the cities and / or counties, even though part(s) of such activities may be located outside the defined per diem locality.