OASIS Customer Resource Library

GSA provides and maintains this resource for all federal agency personnel involved in acquiring complex professional services through the OASIS and OASIS Small Business (SB) IDIQ contracts.

GSA will expand the resource base as necessary to meet our customers’ needs for support in planning and acquiring professional services to meet their agencies' missions. Users can email OasisCustomerSupport@gsa.gov to place a request for additional resource types.

To request one or more of the following courses, select this training link:

  • Delegation of Procurement Authority - course is offered to warranted Contracting Officers (2 CLPs)
  • OASIS Overview Training (2 CLPs)
NAICs code definitions by OASIS Pool Numbers [PDF - 75 KB] size standards are established by the SBA and are subject to adjustment. An awarded contractor business size, as of their offer date, will remain constant for the five base years. At the end of the base year’s contract, a small business will be required to recertify.

The OASIS Table of PSC codes by OASIS pool number [XLSX - 67 KB] is excerpted from Federal Procurement Data System-Next Generation (FPDS-NG) and only includes those in scope. Select the link to search for your Pool number and the various possible PSC Codes that may apply. (Note: The white drop down arrows on the table will streamline the process.)

Note: Ordering Contracting Officers (OCOs) are required to identify, in each task order solicitation, the PSC that represents the principal nature of the work, and report these PSCs in FPDS-NG.

The OASIS Labor Category Crosswalk Table [XLSX - 81 KB] compares Industry's functional job descriptions and specific the Office of Management and Budget (OMB) Standard Occupational Classification (SOC) system occupational descriptions. In this table, you will find more than a thousand industry job titles with suggested SOC occupation and OASIS LCAT matches.
Please select this link to request a pre-award scope review. This service can help reduce the risk of protest and a benefit of working with GSA.


The Contract Assessment Fees rates agreed upon in each of the agency Memorandum of Understanding listed below have been extended through FY 2018.

US Air Force

US Army

US Navy

Department of Homeland Security

DOD Defense Procurement and Acquisition Policy (DPAP)

Centers for Medicare and Medicaid Services

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