How to bid on OASIS+ 8(a) Small Business Set-Aside with Federal Acquisition Service

What the agency is buying and why it matters

The General Services Administration (GSA) is seeking proposals from eligible 8(a) small businesses for the One Acquisition Solution for Integrated Services Plus (OASIS+) contract. This is a multiple-agency contract for professional, scientific, and technical services across various domains. This opportunity is significant for small businesses looking to secure long-term government contracts across a broad range of services.

The solicitation is continuously open for rolling admissions, meaning there is no fixed award timeline. Companies can propose for multiple domains under a single solicitation, allowing for flexibility and growth as government needs evolve.

Key dates and what happens at the deadline

The solicitation was published on July 17, 2026, and the deadline for new proposals is January 11, 2027, at 4:00 PM ET. Proposals must be submitted through the OASIS+ Submission Portal (OSP).

For companies with pending offers submitted before Amendment 0009, a signed SF 30 must be uploaded by July 15, 2026. Failure to submit the signed SF30 by this deadline may result in the offer being ineligible for further consideration. New offers submitted after Amendment 0009 do not require a separate signed SF30 upload unless directed by the Government, but a signed SF 33 is still required.

Who this opportunity suits

This opportunity is specifically for 8(a) small businesses that provide professional, scientific, and technical services. Firms active in SAM.gov and capable of offering services across multiple domains will find this contract particularly suitable. The continuous open solicitation model benefits businesses seeking to expand their government contracting portfolio over time.

How to respond

All proposals must be submitted through the OASIS+ Submission Portal (OSP). The OSP is open for registration and submission of offers. Offerors must be registered and active in SAM.gov.

To access the opportunity, click “View original source” on the portal. If you land on the homepage, click it again to go directly to the bid. You may need a free account to view documents.

Practical tips for preparing a competitive response

Thoroughly review the OASIS+ 8(a) RFP and all amendments before submitting an offer. Ensure your company's registration in SAM.gov is active, accurate, and complete. Pay close attention to the Domain Qualifications Matrix and Scorecards (Attachment J.P-1) to understand the specific requirements for each domain you wish to bid on.

For new offers, acknowledge all current amendments in the OSP during submission. If you have a pending offer from before Amendment 0009, make sure to upload the signed SF 30 to the Business Factors section in Symphony by the deadline. Double-check that the uploaded SF30 corresponds to the correct OASIS+ RFP if you have multiple pending offers. Always ensure your proposal clearly demonstrates your firm's capabilities and experience relevant to the professional, scientific, and technical services required.