Oasis+ Phase II Coming in January
The General Services Administration (GSA) is expanding its next-generation professional services vehicle, One Acquisition Solution for Integrated Services Plus (OASIS+). OASIS+ is designed as a flexible government-wide acquisition contract (GWAC) for complex non-IT services. This program consists of multiple indefinite delivery, indefinite quantity (IDIQ) contracts with a five-year base period and an additional five-year option period.
On December 4, 2025, GSA announced the launch of OASIS+ Phase II, a major expansion of the program. Phase II introduces five new service domains, bringing the total to 13 domains across all six OASIS+ solicitations: Unrestricted, Small Business, Service-Disabled Veteran-Owned Small Business, HUBZone, Woman-Owned Small Business, and 8(a).
The complete list of OASIS+ domains now includes:
1. Technical and Engineering
2. Research and Development
3. Management and Advisory
4. Environmental
5. Intelligence Services
6. Enterprise Solutions
7. Facilities Services
8. Logistics
9. Business Administration (New)
10. Financial Services (New)
11. Human Capital (New)
12. Marketing and Public Relations (New)
13. Social Services (New)
In addition to the expanded domain structure, GSA reaffirmed its plan to open all six solicitations continuously for proposal submissions beginning on or about January 12, 2026. This continuous approach offers contractors greater flexibility in planning and submitting their proposals.
In preparation for Phase II, GSA also expects to issue a pre-amendment notice through SAM.gov on or about December 16, 2025, and to release DRAFT domain scorecards prior to the reopening date.
Global Services’ team of professional proposal managers and OASIS+ experts is prepared to support contractors in navigating these updates and developing strong, compliant, and competitive submissions.
OASIS+ Phase II represents a major step forward in the evolution of GSA’s government-wide acquisition strategy. With five new domains, continuously open submissions, and upcoming draft scorecards, the program is poised to provide a substantial opportunity for businesses seeking long-term federal work.
If your organization is planning to pursue an award under OASIS+ Phase II, now is the time to prepare. Reach out to Global Services for expert support as you develop your OASIS+ Phase II submission.