The General Services Administration does not build weapons or run hospitals. It buys everything else. Office supplies, cloud computing, janitorial services, construction, management consulting, IT infrastructure — GSA is the federal government's purchasing arm, and its Multiple Award Schedule (MAS) program moves over $75 billion in goods and services every year.
For diverse businesses, GSA is one of the most accessible entry points into federal contracting. The agency has a stated small business goal above 30 percent of contract dollars, and its procurement vehicles are specifically structured to make small and diverse businesses visible to thousands of contracting officers across every cabinet agency.
What GSA buys and how much
GSA's total procurement spend runs roughly $80–90 billion annually when you combine the MAS program with its direct agency buys. The MAS accounts for the majority of that. Federal agencies use GSA contracts to buy without running their own full competitive acquisitions — they order off pre-negotiated contracts, which saves time and creates a steady pipeline of task orders.
The MAS covers more than 30 "Large Categories" organized into areas like: - Information Technology (hardware, software, cybersecurity, cloud) - Professional Services (management consulting, financial advisory, human capital) - Facilities (maintenance, construction, facilities management) - Office Management (furniture, supplies, leasing) - Scientific Management and Solutions - Transportation and Logistics
The IT and professional services categories are the largest. GSA also manages STARS III (8(a) IDIQ for IT services, ceiling $50 billion) and OASIS+ (professional services IDIQ, ceiling $90 billion), both of which have separate small business pools.
Set-aside preferences at GSA
GSA uses all five major small business set-aside designations: 8(a) Business Development, HUBZone, Women-Owned Small Business (WOSB), Economically Disadvantaged Women-Owned Small Business (EDWOSB), and Service-Disabled Veteran-Owned Small Business (SDVOSB). Small Disadvantaged Business (SDB) is a reporting category rather than a set-aside type, but SDB contractors benefit from the 8(a) program and may receive evaluation preference in certain contracts.
Within the MAS, contracting officers can restrict task order competitions to small businesses or specific socioeconomic categories. This is called a "set-aside on a Schedule order," and it happens frequently. A contracting officer browsing GSA Advantage or posting an eBuy solicitation can limit responses to WOSB or HUBZone firms with a few clicks.
STARS III is entirely 8(a)-focused. If your firm holds an active SBA 8(a) certification, you can compete for STARS III task orders without separate GSA Schedule placement. The ceiling is $50 billion across a base period plus extensions, and orders are placed through 8(a) competitive or sole-source procedures. The program runs through GSA's Federal Acquisition Service (FAS).
OASIS+ has dedicated small business pools — including an unrestricted pool, a small business pool, and pools for 8(a), HUBZone, WOSB/EDWOSB, and SDVOSB firms. Getting on OASIS+ requires a separate on-ramp solicitation; the program is not always open for new offerors. Watch for on-ramp announcements on SAM.gov.
How to find GSA opportunities
SAM.gov is the starting point. Filter by NAICS code, set-aside type, and "Contract Opportunities" to find open solicitations. When filtering for GSA-specific work, look for: - Contracting office: GSA Federal Acquisition Service or GSA Public Buildings Service - Set-aside type: 8(a), HUBZone, WOSB, SDVOSB, SB - Place of performance if you need work in your region
GSA eBuy (ebuy.gsa.gov) is where contracting officers post Requests for Quote (RFQs) against existing Schedule contracts. You can only see and respond to eBuy solicitations if your firm already holds a GSA MAS contract in the relevant Large Category or Special Item Number (SIN). This is a major reason to get on Schedule — task order solicitations on eBuy often do not appear on SAM.gov.
GSA Advantage (gsaadvantage.gov) is the catalog where agencies browse and buy directly from Schedule contractors. Having an accurate, keyword-rich Advantage catalog listing generates passive inbound orders for products and lower-complexity services.
GSA eLibrary (gsaelibrary.gsa.gov) lists all active Schedule contractors with their awarded price lists. Contracting officers use it to find vendors. Treat your eLibrary listing like a business profile — keep it current.
FPDS-NG (fpds.gov) shows historical award data. Search by NAICS, agency, and contractor type to understand what GSA has actually bought, who won it, and what prices looked like. This is the fastest way to validate whether your service category sees real GSA volume.
GSA Forecast of Contracting Opportunities (acquisition.gov and the GSA-specific forecast tool) publishes planned procurements. Check it quarterly, particularly for large IDIQ vehicles and IT modernization buys where GSA acts as an acquisition shared services provider for other agencies.
Getting on the Multiple Award Schedule
The MAS application goes through GSA's eOffer/eMod system. Before you apply, you need:
- An active SAM.gov registration with a cage code and DUNS/UEI number
- Two years of financial statements (can be unaudited for small businesses under $25M)
- A "Basis of Award" customer — typically a commercial customer to whom you've sold at the same or better pricing than what you're proposing to GSA
- Approved GSA pricing for each SIN you're applying under
- A completed offer in eOffer, including your Commercial Sales Practices disclosure
The evaluation is not competitive — GSA is assessing whether your pricing is fair and reasonable compared to your commercial rates. If you pass the technical evaluation and negotiate pricing, you receive a contract. You are then listed and can begin selling.
Average time from submission to award runs three to six months, longer for complex service contracts. GSA publishes processing times by Large Category on its MAS website. The IT category tends to move faster.
One underused resource: GSA offers free "vendor support" calls through its Customer Service Directors and the Vendor Education Center. Schedule a call before you submit. They will tell you whether your SIN selection is right and flag documentation gaps before they cause a rejection.
Subcontracting through GSA primes
If you are not yet ready for a prime Schedule contract, subcontracting through existing holders is a legitimate near-term path. Large GSA Schedule holders are required to submit small business subcontracting plans when their contract exceeds $750,000. Many actively recruit small and diverse subcontractors.
Named large GSA Schedule holders with active small business subcontracting programs: - Leidos — IT services, cybersecurity, professional services; maintains a supplier diversity portal at leidos.com - SAIC — IT modernization, cloud, systems integration; runs a formal small business subcontracting program - Booz Allen Hamilton — management consulting, data analytics, defense; actively partners with 8(a) firms on STARS III task orders - CACI International — IT services, intelligence, investigations; posts subcontracting opportunities through its procurement portal - Perspecta / Peraton — IT and mission solutions; posts teaming opportunities on SAM.gov
For OASIS+ and STARS III, watch for prime team formations before on-ramp closing dates. Large firms building their pools often post teaming notices on SAM.gov and Connections (the GSA supplier networking tool). Being a named subcontractor on a winning OASIS+ pool can generate years of task order work.
First steps for a diverse business
Step 1: Check your size standard. GSA SINs map to specific NAICS codes. The SBA's size standards table determines whether you qualify as a small business for each one. If you span multiple SINs, verify each NAICS independently.
Step 2: Get your socioeconomic certifications verified in SAM.gov. SDVOSB status is now verified by SBA (since January 2023). WOSB/EDWOSB and HUBZone are also SBA-verified. 8(a) requires an SBA application and a minimum nine-month process. Have these certifications documented before you apply for Schedule; they directly affect which set-aside task orders you can compete on.
Step 3: Identify your top three SINs. Browse the MAS solicitation (Solicitation MAS) on SAM.gov and match your services to specific SINs. Applying under too many SINs slows your evaluation. Start focused.
Step 4: Build your pricing narrative. GSA will compare your proposed rates to your commercial rates. Pull contracts, invoices, or rate cards that document what you have charged non-federal customers. The stronger your commercial sales documentation, the faster negotiations move.
Step 5: Register on the GSA Subcontracting Directory and Connections. Even before you hold a prime contract, large prime contractors search these databases for diverse subcontractors. A complete profile here can generate teaming conversations within weeks.
Step 6: Attend GSA Industry Days. GSA's Federal Acquisition Service holds category-specific Industry Days several times per year, often ahead of OASIS+ on-ramps or large IDIQ procurements. These are public events where contracting officers describe requirements and answer questions. They are the most direct way to understand what GSA is about to buy and what they want from small business partners.
The realistic timeline
Getting on Schedule is a six-to-twelve month project for a first-time applicant. Winning a meaningful prime order typically takes another six to eighteen months after award, as contracting officers buy from vendors they know or have seen on eBuy. The businesses that succeed at GSA treat it as a distribution channel — they invest in their eLibrary profile, respond to eBuy RFQs even for small dollar orders to build past performance, and stay visible through Industry Days and FedConnect networking.
The set-aside pools on STARS III and OASIS+ are the highest-value targets for qualified diverse firms. Both programs post hundreds of millions in task orders annually, and the competition is limited to the firms in each pool. For an 8(a) firm with IT capabilities, STARS III is the most important GSA vehicle to pursue.
Start with SAM.gov registration, confirm your socioeconomic certifications are verified, and book a GSA vendor support call. Those three steps take less than a week and will tell you exactly where you stand.
