Bid guide
How to bid on One Acquisition Solution for Integrated Services Plus (OASIS+) Unrestricted Continuously Open from Federal Acquisition Service
What the agency is buying and why it matters
The Federal Acquisition Service (FAS) is seeking proposals for its One Acquisition Solution for Integrated Services Plus (OASIS+) contract. This is a government-wide, continuously open contract for integrated professional, scientific, and technical services. It is an Indefinite-Delivery, Indefinite-Quantity (IDIQ), Multi-Agency Contract (MAC).
This opportunity allows businesses to propose for one or multiple domains within the contract. Being awarded an OASIS+ contract can provide a significant avenue for securing federal work across various agencies for an extended period.
Key dates and what happens at the deadline
The solicitation was published on July 17, 2026, with a proposal deadline of January 11, 2027, at 4:00 PM ET. New offers submitted after Amendment 0009 must acknowledge all current amendments during submission.
Businesses with pending offers submitted before Amendment 0009 must upload a signed SF30 by July 15, 2026, to acknowledge Amendment 0009. Failure to submit the signed SF30 by this deadline may make the offer ineligible for further consideration. There is no fixed timeline for award; timelines will vary based on proposal volume and resource availability.
Who this opportunity suits
This opportunity is suitable for professional, scientific, and technical services firms. Businesses can propose for one or multiple domains, indicating flexibility for specialized or multi-disciplinary companies.
To be eligible, offerors must be registered and active in SAM.gov. This is a continuously open solicitation, meaning GSA intends to support rolling admissions and allow existing awardees to compete for additional domains as government needs evolve.
How to respond
All proposals must be submitted through the OASIS+ SubmissionPortal (OSP). The OSP is open for registration and submission of offers. You will need to review the solicitation requirements and all amendments before submitting your offer.
If you are submitting a new offer after Amendment 0009, you must acknowledge all current amendments within the OSP during your submission. If you submitted an offer before Amendment 0009 and have not yet received an award or unsuccessful notice, you must upload a signed SF30 to acknowledge Amendment 0009 by July 15, 2026. This is done by logging into Symphony, navigating to My Company, then Business Factors, and uploading the signed SF30 under the Amendment 9 SF30 factor for each applicable RFP.
Practical tips for preparing a competitive response
Thoroughly review the entire solicitation and all amendments. Pay close attention to the specific requirements for each domain you are interested in. Ensure your SAM.gov registration is current, active, and accurate, as this is a fundamental requirement.
When preparing your proposal, clearly articulate your firm's capabilities and experience relevant to the professional, scientific, and technical services required. Since this is a continuously open solicitation, focus on presenting a strong, compliant offer from the outset. For those with pending offers, ensure the SF30 acknowledgement is completed correctly and on time to avoid disqualification.
See the live bid — deadline, agency details, and how to respond
Dates and requirements can change via addenda; always verify on the bid page and at the original source before responding.
View this bid on BiddingSimpleThis guide was prepared by BiddingSimple from the solicitation’s public posting. It is not official guidance from Federal Acquisition Service; the original posting controls.