Supplier databases in government buying: how to get listed
Where government buyers look for vendors (SAM.gov, SBA's Small Business Search, primes' supplier portals, state vendor lists) and how to be found in each.
What "supplier database" usually means
The phrase covers four different things, and the right step depends on which one a buyer means:
- SAM.gov: the federal registration every bidder needs. Contracting officers check it, and other directories are built from it.
- SBA's Small Business Search (SBS): the directory contracting officers and prime contractors use to find small businesses for market research and teaming. It replaced the Dynamic Small Business Search (DSBS) in July 2025 and draws its profiles from SAM.gov registrations.
- Buyers' own vendor lists: prime contractors' supplier portals and state and local governments' vendor registrations, usually by product or service category.
- Award records: public data on who already won what (USAspending.gov, and contract award searches on SAM.gov), which shows who buys from whom.
Get registered in SAM.gov
FAR 4.1102 requires a business to be registered in SAM.gov when it submits an offer on most federal contracts; the exceptions include micro-purchases paid with a government purchase card. Registering gives you a Unique Entity ID, and FAR 52.204-13 requires you to review and update the registration every year to stay registered.
The NAICS codes, business types and certifications in your registration are what buyers filter on, and what SBS shows about you, so check them before anything else. Rules and fields change, so confirm current requirements on SAM.gov.
Be findable in SBA's Small Business Search
SBS profiles come from SAM.gov: a business that opts out of public search in its SAM registration doesn't appear. Fill in the parts buyers read (a capabilities narrative, keywords, past performance and contacts) so a contracting officer searching your NAICS code or a keyword can see what you do. Changes made in SAM.gov can take several business days to show.
Use award data to find buyers and primes
USAspending.gov lets you search federal awards by agency, recipient, NAICS code and place of performance. Searches of contract award data (formerly FPDS.gov's ezSearch) now happen on SAM.gov. Look for the agencies that buy what you sell, then for the companies that won similar awards: they are the prime contractors whose supplier lists you want to join. Public data can be incomplete or late, so treat it as a lead, not a complete record.
Get on prime contractors' supplier lists
Under FAR 19.702, a large business offering on a federal contract expected to exceed $900,000 ($2 million for construction) generally must submit a subcontracting plan with goals for subcontracting to small businesses (FAR 52.219-9); the thresholds were raised on October 1, 2025. Those primes report progress against their goals, so many keep a supplier portal and a small business liaison officer. Find the liaison or subcontracts office on the company's website and ask what they need: capabilities, past performance, certifications and current contacts.
Check state and local vendor portals
Each state, and many cities, counties and school districts, run their own vendor registration, separate from SAM.gov. Some require it before you can bid; others use it only to send notices of new solicitations. Find the purchasing office's supplier portal, register for the categories you can deliver, and keep insurance certificates, tax forms and references current. Requirements differ by government, so read each portal's instructions.
On SpendQuery
Official sources
Questions people ask
What is a supplier database in government buying?
A list of vendors a buyer searches or draws from: the federal SAM.gov registration, SBA's Small Business Search for small businesses, a prime contractor's supplier list, or a state or local vendor portal.
Do I have to be in a supplier database to win government work?
For most federal contracts you must be registered in SAM.gov when you submit an offer. Prime contractors and state and local governments may have their own lists; being on one helps buyers find you, but the requirements depend on the buyer and the solicitation.
How do contracting officers find small businesses?
Many search SBA's Small Business Search (SBS), which replaced DSBS in July 2025 and is built from SAM.gov registrations, by NAICS code, keyword, certification and place.
How do I find which companies buy what I sell?
Search award data by NAICS code or keyword (USAspending.gov, or SpendQuery's industry and supplier pages) to see who won similar work. Those winners are the primes to approach about subcontracting.
Is a state vendor list the same as SAM.gov?
No. State and local vendor portals are run by each government and are separate from SAM.gov; register with each one you want to sell to.
Can a subcontractor get on a prime contractor's supplier list?
Yes. Large primes with subcontracting plans look for small business subcontractors. Contact the company's small business liaison or subcontracts office and ask how it adds suppliers.
More guides
- How to find government contracts
- What is a small business set-aside?
- How to read a SAM.gov contract notice
- How to register in SAM.gov
- NAICS codes and small-business size standards
- Federal contract types, explained
- How to market your business to government buyers
- Sole-source contracts for small businesses
- Joint ventures and the SBA Mentor-Protégé Program
- Size protests and certificates of competency
- How to decide whether to bid on a government contract
- How to find federal grants
- The federal fiscal year-end spending rush
- What are the easiest government contracts to get?
- FY2026 federal contract spending: which agencies grew and shrank
- Government contract lists: open bids, awards and small business
- Who buys janitorial services from the federal government
- How government contractors get paid: timing, invoices and factoring
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- A free tool to ask government spending questions in plain English
- How to find federal bids your small business qualifies for
- How to find which federal agencies buy your product or service
- Free tools to search state and local government contracts
- How to understand the FAR without reading all of it
- What is a CAGE code?
- How do I get a UEI number?
- What is a capability statement?
Updated 2026-10-21. General information, not legal advice; the solicitation and the FAR govern each purchase.