OASIS+ Contract Vehicle: How Small Businesses Get On — and Win Task Orders From — GSA's Premier Services MAC

OASIS+ is GSA's governmentwide, indefinite-delivery indefinite-quantity (IDIQ) contract for professional services that are not IT. It replaced the legacy OASIS and BMO (Best-in-Class) vehicles, which had become outdated and capacity-constrained. The core idea: agencies across the federal government can write task orders against a single, pre-competed vehicle rather than running their own time-consuming solicitations. For contractors, that means one application unlocks work across dozens of agencies for years.

The structure is different from most contract vehicles you've encountered. There is no contract ceiling — GSA has explicitly removed any ceiling on total obligations. There is also no cap on the number of contractors who can hold an award. That's intentional: GSA wants broad competition at the task-order level, not artificial scarcity at the vehicle level.

OASIS+ launched with Phase I awards in 2024, covering eight service domains. Phase II followed in January 2026, adding five new domains and moving to a continuously open on-ramp. Phase II's first rolling awardee announcements came on May 12, 2026. The vehicle is active and ordering now — agencies don't wait for all awards to finalize before issuing task orders.

OASIS+ is not a single contract — it's six separate and distinct IDIQ contracts, one per business category. Your size and socioeconomic status determines which pool you can compete in. You can be on multiple pools simultaneously if you hold multiple certifications, which is a strategic advantage worth planning for.

Eligibility is verified at the time of application, based on your SAM.gov registration and SBA certifications. If you hold an 8(a) certification and also qualify as SDVOSB, you can apply to both pools and hold awards on both. That gives you access to more task orders than a competitor who only qualifies for one — and it gives agencies more ways to route set-aside work to you.

OASIS+ covers professional services — not IT products, not construction, not supplies. If your work lives in the services category but isn't purely IT, there's likely a domain for it. Phase I launched with eight domains. Phase II, which went live in January 2026, added five more.

Each domain has its own solicitation and its own evaluation matrix. You can apply to multiple domains if you have relevant past performance for each. There are approximately 150 functional areasmapped across the 13 domains — GSA uses these to match your past performance to the work you're claiming you can do.

The five Phase II domains are significant additions. Human Capital and Financial Services in particular represent categories where federal agencies have historically run their own IDIQs or used standalone contracts. Funneling that work through OASIS+ creates real opportunity for firms that weren't on Phase I awards.

Phase II launched on January 12, 2026, with a continuously open solicitation. There is no deadline to apply — GSA evaluates and awards on a rolling basis. The first batch of Phase II awards was announced on May 12, 2026. New batches continue as GSA processes applications.

Getting on the vehicle early still matters, even without a closing deadline. Task orders are being issued now against Phase II awards. Every month you're not on the vehicle is a month of opportunity you can't access. Apply now, not after you finish other priorities.

OASIS+ does not use the traditional best-value tradeoff evaluation you find in most RFPs. Instead, it uses a self-scoring model: you assign yourself points from defined credit categories and submit documentation to back up those points. GSA verifies. If your documentation supports your score, you get those credits. If it doesn't, you don't.

The self-scoring approach puts the quality of your documentation at the center of the evaluation. A firm with genuinely strong past performance but weak documentation will score lower than a firm that has done the same work but packaged it properly. That's a fixable problem — and one you should fix before applying.

The minimum threshold is 36 out of 50 credits for small business pools. Unrestricted requires 42 out of 50. You need to hit that floor in each domain you apply to. Domains are evaluated independently, so strong performance in Management & Advisory doesn't compensate for a thin application in Financial Services.

One underused credit source: DCAA-approved accounting systems. If your firm has gone through DCAA audit and has an approved system, you earn bonus credits. Small businesses often skip this step because they think DCAA audits are only for large contractors — but the OASIS+ scoring model explicitly rewards it. If you're planning to apply, getting your accounting system approved first is worth the investment.

Getting on OASIS+ is the easy part. Winning task orders is the actual job — and most contractors underestimate how competitive it is at this level.

Every OASIS+ task order solicitation is posted through GSA eBuy. That's the only channel. If you're not monitoring eBuy for your pools and domains, you're missing opportunities. eBuy notifications are the mechanism — but eBuy is not a pipeline management tool. You need a system for tracking opportunities, managing proposals, and measuring your win rate across OASIS+ pursuits.

Task orders on OASIS+ follow the FAR Part 16 ordering procedures. Agencies issue a Request for Task Order Proposal (RTOP) to all awardees in the relevant pool and domain. You have the right to be considered — but not the right to win. Every RTOP is a competitive event.

The best contractors on OASIS+ don't wait for RTOPs to show up in eBuy. They do capture management before the solicitation drops — building relationships with contracting officers, attending industry days, responding to sources sought notices, and shaping requirements. By the time the RTOP is released, they already know what the agency wants and who they've been talking to.

One of the most underused strategic advantages in OASIS+ is the ability to hold awards across multiple pools simultaneously. A firm that holds awards in the Total Small Business pool, the SDVOSB pool, and the 8(a) pool — assuming it qualifies for all three — is eligible for task orders set aside for any of those categories. That's three bites at the apple where a competitor with only one certification gets one.

The practical implication: if you're not already pursuing HUBZone, WOSB, or other SBA certifications, the OASIS+ multi-pool structure gives you a concrete reason to accelerate those efforts. A HUBZone certification or WOSB certification that you were treating as a nice-to-have becomes a direct vehicle multiplier on OASIS+.

Multi-domain coverage is the other lever. A management consulting firm that can document past performance in Management & Advisory, Financial Services, and Human Capital can apply to all three domains — and access RTOPs in each. More domains, more task orders to compete for.

Most rejections on OASIS+ come from documentation problems, not capability gaps. Contractors doing sophisticated professional services work get rejected because their past performance write-ups don't map cleanly to the functional areas they're claiming, or because their project references can't verify the dollar values they self-scored.

One mistake that isn't obvious: treating an OASIS+ award as a finish line. Contractors who win awards and then fail to actively compete for task orders add no value from their spot on the vehicle. Agencies notice which contractors are actively responding to RTOPs and which aren't. Consistent non-response can affect your standing in future ordering periods.

OASIS+ is the right vehicle for professional, non-IT services. But it's not the only vehicle worth pursuing, and for some work it's the wrong one entirely. Here's how it stacks up against the vehicles you're most likely to encounter:

The GSA Multiple Award Schedule (MAS) is often the first vehicle small businesses pursue because the entry bar is lower. OASIS+ is harder to get on — the self-scoring threshold, the qualifying project requirements, the documentation burden — but the resulting task orders tend to be larger and more strategic. A$500K OASIS+ task order for management consulting pays better and builds more past performance than a series of small MAS orders.

If your work is primarily IT, OASIS+ is not your vehicle. Look at Polaris (GSA's GWAC for small business IT services), NASA SEWP, or CIO-SP4. For a full comparison of all major vehicles, see our guide on government contract vehicles.

OASIS+ is actively awarding. Task orders are flowing. The window to get on the vehicle is open now and will stay open — but every month you delay is lost opportunity. Here's the practical sequence:

The contractors winning the most on OASIS+ aren't the ones with the biggest companies or the most certifications. They're the ones who treat every task order as a capture event — building agency relationships before solicitations drop, submitting responsive proposals, and tracking their win rate to improve over time.

If you're not sure where to start, the Quick Checker will show you which pools and set-asides you currently qualify for, and the opportunity matching engine will surface OASIS+ task orders in your domains as they hit eBuy. The intelligence is there — you just need to act on it.