GSA launched OASIS+ Phase II on January 12, 2026, introducing a continuously-open on-ramp solicitation model for the $60 billion services GWAC. The shift from windowed onramps to rolling acceptance is a material change in how firms can enter the federal services IDIQ landscape. Coverage from GSA and iQuasar.
OASIS+ basics
OASIS+ (One Acquisition Solution for Integrated Services Plus) is GSA's government-wide multi-agency, multiple-award, indefinite-delivery/indefinite-quantity vehicle for non-IT services. It's the successor to the original OASIS contract and covers engineering, management consulting, logistics, financial services, research and development, environmental, intelligence, scientific, and other professional services.
Contract structure:
- 5-year base ordering period
- One 5-year option (cumulative 10 years)
- 1,300+ small businesses already on the vehicle across small-business pools
- Plus several hundred unrestricted contractors
The Phase II change that matters
Before: GSA would occasionally open onramps — firms had to time proposals to whichever window opened. Miss the window, wait years.
After: GSA's Office of Professional Services and Human Capital released final Phase II amendments on SAM.gov on January 12, 2026, confirming a rolling approach. Firms can submit Phase II proposals on an ongoing basis.
How task orders actually flow
- Task orders can be awarded any time prior to master-contract expiration
- GSA eBuy is the required task-order solicitation tool
- Ordering contracting officers issue solicitations via eBuy with real-time automated responses
- Competition is typically limited to the pool the contract is placed in (small-business set-asides are held within their pool)
What this means for small firms
- If you missed the original OASIS+ window, Phase II is your path in — no need to wait for a future master recompete
- 1,300+ small-business primes means the vehicle is already competitive; focus on specialty positioning rather than general coverage
- eBuy task-order response capability is the differentiator — firms that can turn quality proposals in 24-72 hours capture a disproportionate share
What to do this week
- If your firm provides non-IT professional services and has federal past performance: assess eligibility and prepare Phase II submission
- If you're already on OASIS+: audit your eBuy response posture — speed matters for rolling task orders
- Verify your NAICS/pool assignments match your actual capability — sub-optimal pool placement caps your opportunity