Professional services | 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. Professional services Buy services We offer several contracts to meet your professional services requirements regardless of complexity and scope. OASIS+ Multi-Agency Contract Multiple Award Schedule (MAS) - Professional Services One Acquisition Solution for Integrated Services (OASIS) Acquisition support Need help with your professional services acquisition? Use these references to get started. Request a scope review Learn how to buy through Multiple Award Schedule Get contract support Find sample acquisition documents Request training Conduct research Learn about Civilian Services Acquisition Workshops e-Tools Use these tools for anything from market research to submitting your RFQ/RFP. Acquisition Gateway document library Acquisition Gateway Solution Finder Contract Awarded Labor Categories, or CALC+ Pricing Intelligence Suite eBuy open eLibrary Steps to performance-based acquisition Acquisition Document Library Market Research as a Service Acquisition Solutions Navigator Training We offer a variety of free web-based, self-teaching tools, podcasts, and on-site instructor led training. OASIS+ Delegation of Procurement Authority GSA events and training PSHC training request form Training videos and recordings Industry Partners Use these resources to learn more about getting a GSA contract, marketing your services, maintaining and modifying your contract and more. Access Vendor Support Center About contractor teaming arrangements Get on GSA Schedule Small business resources Market your Schedule Contract Connect There are many ways to connect with our team from personal contact to social media. Contact our customer service directors Email professionalservices@gsa.gov Join the Professional Services Interact Community Join the OASIS Interact Community Join the OASIS+ Interact Community Professional services category team X (formerly known as Twitter) 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.