PER DIEM LOOK-UP
1 Choose a location
OR
OR
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.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock
( )
or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The Federal Triangle was conceived as part of the Senate Park Commission Plan of 1901, commonly referred to as the McMillan Plan, after Senator James McMillan of Michigan. The McMillan Plan sought to re-establish the original intent of the L’Enfant Plan and improve the central corridor of Washington that had not developed as intended and did not reflect a positive image for the new republic.
During the Civil War the area, which is now the Federal Triangle, had become a notorious neighborhood where General Joseph Hooker’s troops, then encamped outside the city protecting the approaches from rebel attack, would gravitate at night. Already designated “Murder Bay” by Washingtonians, the neighborhood was now also known as “Hooker’s Brigade” and was a rabbit warren of bars and bawdy houses.
After World War I, the need for new and expanded government office buildings became critical by the Hoover Administration. In 1926, the Public Buildings Act was passed by Congress launching the most ambitious federal construction in Washington’s history. Secretary of the Treasury Andrew Mellon was given broad authority to “provide suitable accommodation” for federal executive departments in the City of the District of Columbia. Secretary Mellon appointed a Board of Architectural Consultants to study proposals and make recommendations for the development and design of the buildings within the Federal Triangle.
The project was completed in three phases. The first phase of the project, including the Commerce and IRS buildings, was completed when the country found itself on the brink of the Great Depression. Subsequent phases were funded throughout the Great Depression until resources again were diverted on the brink of World War II. The Triangle was not completed until 1997 when the Reagan building occupied the final site.
Error, The Per Diem API is not responding. Please try again later.
No results could be found for the location you've entered.
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.
Rates are available between 10/1/2022 and 09/30/2025.
The End Date of your trip can not occur before the Start Date.
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.