OASIS+ Phase II opens continuous on-ramping across seven domains, with a combined ceiling above $60 billion. Companies that missed Phase I can now win positions through recurring on-ramp windows. Pick your domain by past-performance fit, not marketing fit — three strong CPARS-rated projects beats five mediocre ones.
The Vehicle Most Firms Should Already Be Pursuing
If your company sells professional services to the federal government and you do not have a strategy for OASIS+, you are watching the largest professional services contract vehicle in the federal government move forward without you. Phase II is opening the door for new entrants through continuous on-ramping, expanding the domain structure, and consolidating what used to be five separate OASIS, OASIS Small Business, HCaTS, and HCaTS SB vehicles into a single ecosystem.
I spent fifteen years inside the government as a Contracting Officer at GSA, IRS, DoD, and DOI. I evaluated and awarded task orders against the original OASIS vehicles, and I have walked clients through OASIS+ Phase I proposals. The contractors who win on OASIS+ are not always the largest or most experienced — they are the ones who understand the domain structure, the on-ramp mechanics, and the specific evaluation criteria better than their competitors.
What is OASIS+ and how is it different from a GSA Schedule?
OASIS+ is a family of Governmentwide Acquisition Contracts (GWACs) designed to compete and award task orders for professional services across the federal government. The estimated ceiling across all the OASIS+ vehicles exceeds $60 billion over the life of the program. Unlike the GSA Multiple Award Schedule, OASIS+ is structured for non-commercial professional services — meaning the buys are typically larger, more complex, and frequently include cost-reimbursable pricing structures.
The vehicle is organized by domain, not by industry category. Each domain captures a specific type of work — Management and Advisory, Technical and Engineering, Research and Development, Logistics, Intelligence Services, Enterprise Solutions, and Environmental — and contractors must qualify and compete domain-by-domain. You can hold positions in multiple domains, but each requires its own proposal, its own evaluation, and its own award.
This is the single most important structural fact for newcomers: OASIS+ is not one contract. It is a portfolio of seven domain contracts, each awarded separately.
The Phase II Change That Matters Most: Continuous On-Ramping
Under Phase I, OASIS+ was a traditional GWAC — the proposal window closed, awards were made, and that was it. Companies that missed the initial proposal had to wait years to access the vehicle.
Phase II changes this. GSA is moving to a continuous on-ramping model, with discrete on-ramp windows opening on a recurring basis to add new awardees within each domain. This solves two problems at once: it lets GSA refresh the pool of competitors as agencies report capability gaps, and it gives new firms a realistic path onto the vehicle without waiting for a multi-billion-dollar recompete.
The mechanics, as currently structured, work like this:
- Domain-level demand triggers an on-ramp. GSA monitors which domains have capacity issues — too few small businesses to meet set-aside requirements, gaps in specialized capability, or saturated competition. When a domain hits a trigger threshold, an on-ramp window is announced.
- The on-ramp uses a streamlined evaluation. Proposals are scored on the same technical and corporate experience factors as the initial Phase I solicitation, but with reduced volume requirements compared to the full Phase I proposal package.
- Awards are domain-specific. You apply to a specific domain, and if successful, you hold a position only in that domain. Cross-domain awards still require separate proposals.
- Existing awardees can pursue domain expansion. If you already hold an OASIS+ position in one domain, the on-ramp window is also when you can pursue additional domains — typically with a reduced corporate experience burden because some of your information is already on file.
The timing of on-ramp windows is the single most important calendar event for non-awardees. GSA is publishing on-ramp announcements through SAM.gov and the OASIS+ program portal. Get on those notification lists now, even if you are not yet ready to submit.
How do I pick the right OASIS+ domain for my company?
The most common mistake I see is firms applying to the domain that best matches their marketing rather than the domain that best matches their past performance documentation.
OASIS+ evaluations are heavily driven by relevant corporate experience and past performance. The evaluator is comparing your submitted past performance projects against the work scope of the specific domain you applied to. If you applied to the Management and Advisory domain but your strongest past performance is a $40 million IT systems integration contract, the evaluator is going to find that gap in fifteen minutes.
Before you commit to a domain, do this:
- Pull your five strongest past performance projects — strongest meaning highest dollar value, longest period of performance, and clearest customer satisfaction documentation in CPARS.
- Map each one against the specific scope language for each of the seven OASIS+ domains. The scope statements are detailed; read them word-by-word.
- Identify which domain has the strongest three-out-of-five alignment. Three strong projects beats five mediocre ones every time.
- If you have strong alignment with two domains, prioritize the one with the smaller pool of current awardees in your business size category. Competition matters as much as scope fit.
This is not about being modest — it is about being precise. The OASIS+ evaluators want to award firms that obviously belong in the domain. Make the case obvious.
The Joint Venture Strategy Most Firms Miss
OASIS+ explicitly allows joint ventures to compete for awards under any small business socioeconomic category — small business, 8(a), WOSB, EDWOSB, SDVOSB, and HUBZone — including SBA-approved Mentor-Protégé joint ventures.
For mid-tier firms that are too large to compete unrestricted as a small business but too small to win on price against large primes, the joint venture path is often the strongest play. A protégé firm in an SBA Mentor-Protégé Agreement can compete for OASIS+ small business set-asides using the joint venture's combined past performance — which includes the mentor's experience under 13 CFR 125.8(e).
The two structural requirements that catch firms off-guard:
- The JV agreement must be in place and SBA-approved (where required) before the proposal is submitted. SBA approval of the Mentor-Protégé Agreement is not a formality. The process can take ninety days. Start now if you are even considering this path.
- The protégé must perform at least 40% of the joint venture's work. Under FAR 19.703 and the SBA Limitations on Subcontracting rules, the small business member has to do meaningful work — not just hold the contract while the mentor delivers. Build the workshare structure realistically in your proposal.
I have seen too many JVs proposed where the workshare is obviously fictional. The contracting officer reads the proposal, sees the protégé claiming 40% of complex technical work the protégé has never demonstrated, and the proposal gets marked down on realism. Do the JV honestly or do not propose it.
What gets a company eliminated in OASIS+ technical evaluation?
From the CO seat, here are the elimination patterns I saw most often in OASIS-family evaluations:
1. Past Performance That Does Not Match the Domain Scope
I covered this above, but it is worth restating because it is the number-one elimination cause. If your submitted past performance is for IT services and the domain is Management and Advisory, no amount of narrative writing will paper over the gap. Pick the right domain or do not submit.
2. Self-Scoring That Does Not Survive Verification
OASIS+ uses a self-scoring system in some evaluation phases. Contractors claim points for certifications, relevant experience, and clearance positions. The CO verifies a sample of those claims against documentation.
Every claim that fails verification — a certification that expired six months ago, a clearance count that includes contractors no longer employed, a contract value that includes work outside the period of performance — costs you more than the points themselves. It signals that your other claims should be examined too. Verify every single self-scored claim against current documentation before submission.
3. Missing or Incomplete Documentation
OASIS+ proposal packages require specific documentation in specific formats: cost accounting system certifications, audited financial statements, the SBA Mentor-Protégé Agreement approval letter if applicable, and the SF 1408 pre-award accounting system review for cost-reimbursable work. Missing any of these gets your proposal eliminated at gateway — meaning the evaluator never reads your technical content.
I have seen contractors lose seven-figure opportunities because their CPA had not yet completed the SF 1408 work and they submitted without it. The cost of getting the SF 1408 done in advance is a few thousand dollars. The cost of missing it is the contract.
4. Failure to Demonstrate Cost Realism
For cost-reimbursable task orders — which represent a significant portion of OASIS+ obligation — your DCAA-compliant cost accounting system matters as much as your technical proposal. If your firm has not been through DCAA accounting system review, you are not ready for cost-reimbursable work on this vehicle.
The Pricing Strategy For Phase II On-Ramps
OASIS+ uses not-to-exceed (NTE) ceiling rates at the vehicle level, with task-order-specific pricing competed at the task order level. This means your vehicle-level pricing decision sets the maximum you can charge for the next several years, but most actual price competition happens later.
For on-ramp proposals, two pricing decisions matter:
- Set your NTE rates competitively but not at floor. NTE rates that are visibly below market signal financial weakness. NTE rates that are visibly above market signal you are not serious about competing for task orders. Target the median of awarded firms in your domain.
- Be honest about labor category coverage. You do not need to cover every labor category in your NTE pricing. You need to cover the labor categories that match the work you actually intend to bid. Padding your labor category list creates compliance exposure later when task orders are competed.
The Action Sequence Before The Next On-Ramp Window
If you are seriously pursuing OASIS+, here is what needs to be ready before the next on-ramp announcement:
- Pick your target domain based on past performance alignment, not marketing fit.
- Pre-position your five strongest past performance write-ups in the format OASIS+ requires. CPARS-pulled, with project values, periods of performance, and customer reference contacts confirmed.
- Confirm your business size standard under the NAICS code 541330 or whichever code applies to your domain. Size standards change; do not assume your status from two years ago still applies.
- Get your DCAA cost accounting system review (SF 1408) completed if you have not already. This is gateway documentation for cost-reimbursable competition.
- If pursuing a joint venture path, get the SBA Mentor-Protégé Agreement filed at least ninety days before the on-ramp window opens.
- Sign up for SAM.gov notifications on the OASIS+ program portal and watch for industry day announcements through GSA's Create portfolio.
The Window Is Open
The Phase II on-ramp structure is the most accessible OASIS+ has ever been for new entrants. The contractors winning Phase II positions will hold a vehicle that drives material federal revenue for the next decade. The contractors who skip Phase II will spend the next decade either acquiring a competitor that won, or partnering as a sub on someone else's task orders.
The Bottom Line
- Pick the OASIS+ domain that matches your past performance documentation, not your marketing copy. Three strong CPARS-rated projects beats five mediocre ones.
- If you are mid-sized and competing against large primes, the SBA Mentor-Protégé joint venture is the strongest play. Allow ninety days for SBA approval.
- Complete your DCAA cost accounting system review (SF 1408) before the next on-ramp window. Missing it is automatic gateway elimination on cost-reimbursable work.
- Set NTE labor rates at the median of awarded firms in your domain. Below-market signals weakness; above-market signals you are not serious.
- Subscribe to SAM.gov notifications for the OASIS+ program — on-ramp windows open by domain demand, not on a fixed schedule.
FAQ
What is OASIS+ Phase II?
OASIS+ Phase II is the GSA Governmentwide Acquisition Contract (GWAC) family for professional services, structured around seven domains with continuous on-ramping. The combined ceiling exceeds $60 billion. It consolidates and replaces the prior OASIS, OASIS Small Business, HCaTS, and HCaTS Small Business vehicles.
What are the seven OASIS+ domains?
The seven domains are Management and Advisory, Technical and Engineering, Research and Development, Logistics, Intelligence Services, Enterprise Solutions, and Environmental. Each domain is awarded separately — contractors must qualify and compete domain-by-domain through their own proposal package.
Can a small business submit an OASIS+ Phase II on-ramp proposal as a joint venture?
Yes. OASIS+ allows joint ventures to compete under every small business socioeconomic category — small business, 8(a), WOSB, EDWOSB, SDVOSB, and HUBZone — including SBA-approved Mentor-Protégé JVs. The protégé must perform at least 40% of the JV's work under FAR 19.703 and the SBA Limitations on Subcontracting rules.
How does the OASIS+ Phase II on-ramp process work?
GSA monitors each domain for capacity issues and announces on-ramp windows when triggers hit — too few small businesses to meet set-aside requirements, capability gaps, or competition saturation. Proposals are evaluated against the same factors as Phase I but with reduced volume. Awards are domain-specific.
How long does the SBA Mentor-Protégé Agreement approval take?
Plan for at least ninety days for SBA approval of a new Mentor-Protégé Agreement. The agreement must be SBA-approved before the joint venture submits an OASIS+ proposal — submitting without approval is gateway elimination, not a curable deficiency.
What is the SF 1408 and why does it matter for OASIS+?
SF 1408 is the DCAA pre-award accounting system review. For cost-reimbursable task order competition on OASIS+, a current SF 1408 is gateway documentation. Without it, a proposal can be eliminated before the evaluator reviews technical content. The review typically costs a few thousand dollars through a qualified CPA firm.
Can a company hold OASIS+ positions in more than one domain?
Yes, but each domain requires its own proposal, evaluation, and award. Existing OASIS+ awardees can pursue additional domains during on-ramp windows, often with reduced corporate experience documentation because some information is already on file with GSA.
If you are a professional services firm evaluating whether OASIS+ is worth pursuing — or which domain to target — Blackfyre works directly with contractors to position past performance, structure joint ventures, and pursue the right domain at the right window. Book a call and we will walk through your firm's specific positioning before the next on-ramp opens.