How to bid on OASIS+ HUBZone Small Business Set-Aside with Federal Acquisition Service

What the agency is buying and why it matters

The Federal Acquisition Service (FAS) is seeking Historically Underutilized Business Zone (HUBZone) small businesses for its One Acquisition Solution for Integrated Services Plus (OASIS+) program. This is a continuously open, multi-agency contract for integrated professional, scientific, and technical services. This opportunity allows HUBZone small businesses to compete for a broad range of government contracts, providing a significant avenue for growth and sustained work.

OASIS+ is an Indefinite-Delivery, Indefinite-Quantity (IDIQ) Multi-Agency Contract (MAC). GSA intends to keep solicitations continuously open to support rolling admissions and allow existing awardees to compete for additional domains as government needs evolve. This means there are ongoing opportunities for new businesses to join and for current awardees to expand their scope.

Key dates and what happens at the deadline

This solicitation was published on July 17, 2026, with a deadline for new offers on January 11, 2027, at 4:00 PM ET. If you are submitting a new offer after Amendment 0009 was issued, you must acknowledge all current amendments during your offer submission in the OASIS+ SubmissionPortal (OSP).

For businesses that submitted an offer prior to Amendment 0009 and have not yet received an award or unsuccessful notice, you must acknowledge Amendment 0009 by signing the SF30 and uploading it to the Business Factors section in Symphony by July 15, 2026. Failure to submit the signed SF30 by this deadline may make your offer ineligible for further consideration. This SF30 is for acknowledgement only; do not submit revised proposal documents or other changes.

Who this opportunity suits

This opportunity is specifically for Historically Underutilized Business Zone (HUBZone) small businesses. Firms that provide professional, scientific, and technical services are the target for this multi-agency contract. Businesses must be registered and active in SAM.gov to be eligible to submit a proposal.

How to respond

All proposals must be submitted through the OASIS+ SubmissionPortal (OSP). The OSP has been open for registration and submission of offers since January 12, 2026. You can access the opportunity by clicking “View original source” to open it on the portal. If the first click takes you to the homepage, click it again to go directly to the bid. You may need a free account to view documents, though this is not always required.

Offerors are permitted to submit a single proposal covering multiple domains under a single solicitation. Before submitting, review the solicitation requirements and all amendments. New offers submitted after Amendment 0009 must acknowledge all current amendments in the OSP. A signed SF 33 is required for all offer submissions.

Tips for preparing a competitive response

Ensure your SAM.gov registration is active, accurate, and complete. This is a fundamental requirement for all government contracting opportunities and especially for this one, as it is explicitly stated.

Carefully review all solicitation requirements and any amendments. For a continuously open solicitation like OASIS+, amendments can be frequent and contain critical updates. Staying current with all posted information on SAM.gov is your responsibility.

When preparing your proposal, focus on clearly demonstrating your firm's capabilities within the professional, scientific, and technical services domains you are targeting. Since you can submit a single proposal for multiple domains, ensure your submission effectively covers all chosen areas. Highlight past performance and relevant experience that aligns with the scope of OASIS+.