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The Office of Centralized Acquisition Services helps federal agencies simplify and strengthen how they acquire common goods and services. By leveraging OCAS’s centralized, enterprise-wide acquisition model, you can expand their contracting capacity, especially during periods of limited staffing, while streamlining procurement processes and accelerating delivery.
OCAS solutions promote compliance, cost savings, and risk reduction by tapping into established governmentwide contracts and proven best practices. Partnering with OCAS enables you to focus resources on mission priorities while benefiting from shared efficiencies across government.
Stay informed about — and register for — upcoming events, including OCAS pipeline reviews, using our Interact communities. Industry professionals can email industrygsaocas@gsa.gov to connect with us directly.
We encourage you to read the OCAS FAQs to find answers to your questions. We also invite you to email us your questions or suggestions at ocas@gsa.gov. We look forward to hearing from you!
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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 10/1/2023 and 09/30/2026.
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.
U.S. General Services Administration