What Is OASIS+? A Guide for Small Businesses

OASIS+ is one of the most important contract vehicles for companies that sell professional services to the federal government, and one of the most misunderstood. It isn't won with a traditional proposal. You qualify by proving, domain by domain, that your past projects meet a detailed scorecard.

We've prepared OASIS+ submissions across many domains and every pool, and our clients hold a 100% win rate across more than 30 submissions as of 2026. This guide covers what OASIS+ is, how it's structured, how qualification works, and what to expect once you're on it.

What OASIS+ is

OASIS+ (One Acquisition Solution for Integrated Services Plus) is a governmentwide, multiple-award, indefinite delivery, indefinite quantity (IDIQ) contract managed by GSA for professional services across 13 domains, from technical and engineering to management and advisory, logistics and facilities. IT is included as support to those services, while standalone IT requirements generally go through GSA's IT vehicles. GSA designates it a Best-in-Class vehicle, and it replaced several older GSA vehicles, including the original OASIS, BMO (Building Maintenance and Operations) and HCaTS (Human Capital and Training Solutions).

A few things set it apart:

• No overall ceiling. GSA places no dollar limit on the number or value of task orders.
• Any contract type at the task order level, including fixed-price, cost-reimbursement, time-and-materials, labor-hour, and hybrids.
• A long ordering period. Five-year base plus a five-year option, for up to ten years.
• Services, not products. Products are allowed only when they're needed to perform the ordered services.

The six pools

OASIS+ is actually six separate IDIQ contracts, one per pool:

Many small businesses qualify for more than one pool. Which pools you pursue affects your competition, your scoring threshold and the task orders you can compete for.

The 13 domains

Within each pool, you qualify for specific domains, each covering a type of service:

• Original eight: Management and Advisory, Technical and Engineering, Research and Development, Intelligence Services, Environmental, Facilities, Logistics, and Enterprise Solutions
• Added in Phase II: Business Administration, Financial Services, Human Capital, Marketing and Public Relations, and Social Services

Enterprise Solutions is available only in the Unrestricted pool, so the small business pools have 12 domains each.

We cover how to choose in Which OASIS+ Domain Should You Bid?.

How you qualify: the self-scored scorecard

Each domain has a 50-credit scorecard. You score your own company against it and submit documentation that proves every credit you claim. GSA then verifies the score.

To be awarded a domain, you need to meet a minimum score:

Most of the credits come from qualifying projects: up to five past projects per domain that show relevant experience at the right scale. The rest come from federal experience projects, business systems, facility clearances and certifications. We break down the scorecard in How OASIS+ Scoring Works, and the project rules in OASIS+ Qualifying Projects.

This is a pass-or-fail threshold, not a ranking. Every offeror that meets the minimum in a domain can be awarded it. That changes the strategy: the goal is to clear the threshold with a safe cushion, backed by documentation that holds up.

Phase II: OASIS+ is open now

GSA awarded the original OASIS+ contracts from mid-2024 through 2025. In January 2026, GSA opened Phase II, which added the five new domains and made all six solicitations continuously open until further notice. Awards are made on a rolling basis, with the first Phase II awardees announced in May 2026.

That means:

• New companies can submit whenever their package is ready.
• Current OASIS+ holders can add domains, but must first have signed the required bilateral modification, and add-domain requests are only accepted while that pool's solicitation is open.
• Rejected offerors can resubmit, but must submit a full new submission plus a signed response addressing every debriefing finding.

What happens after you're awarded

Winning OASIS+ gets you onto the contract. It doesn't come with guaranteed work beyond a small minimum.

• Task orders go through GSA eBuy. Agencies compete requirements among holders of the relevant domain under fair opportunity rules.
• Federal agencies order directly. Agencies with a delegation of procurement authority from GSA can place orders.
• There's a small fee. A contract access fee of 0.15% applies to invoiced amounts on task orders.
• There's an activity expectation. GSA can decline to exercise the option if a contractor hasn't reached a minimum level of task order awards by the end of the base period.

The companies that do well on OASIS+ treat the award as the start. They pick target agencies, build relationships and teaming partners, and watch eBuy for their domains.

Is OASIS+ right for your company?

OASIS+ tends to be a strong fit if you:

• Provide professional services in one or more of the 13 domains, from technical and engineering to management and advisory, logistics and facilities
• Have past projects of meaningful size, typically at least several hundred thousand dollars a year for small business pools, depending on the domain
• Can document those projects with contracts, statements of work and performance records
• Want access to larger, more complex requirements across many agencies

If you mostly sell products, or your projects are small, a GSA MAS contract may be the better starting point. See OASIS+ vs. GSA MAS.

Where to go from here

OASIS+ rewards preparation more than writing. The companies that qualify easily are the ones that pick the right domain, choose their strongest projects, and document every credit clearly. If you're considering a submission, a scorecard review is the fastest way to find out whether you'll clear the threshold. See our OASIS+ services or book a call below.