Before any federal agency can pay your business a single dollar, you must be registered in the government's core vendor system. This is free — never pay a third party for basic SAM.gov registration.
Step-by-step registration checklist
- Get an EIN (Employer Identification Number) from the IRS for your business.
- Set up your business structure (LLC, S-Corp, etc.) and a DUNS-replacement Unique Entity ID (UEI) is auto-assigned during SAM.gov registration — no separate D-U-N-S step anymore.
- Create a Login.gov account, then register your entity at SAM.gov (System for Award Management) — this is completely free.
- During registration, select your NAICS codes (North American Industry Classification System) — these describe what your business does and determine your small-business size status.
- Confirm your CAGE Code (Commercial and Government Entity code), automatically assigned as part of SAM.gov registration for U.S. entities.
- Complete your Reps & Certs (Representations & Certifications) — self-certifications about your business size, ownership, and compliance.
- Renew your SAM.gov registration every 12 months — expired registrations cannot receive new awards or payments.
IMPORTANT — Common costly mistake
Scammers run ads claiming you must pay $500+ to 'register' for SAM.gov or get a 'certified' UEI. Registration is 100% free directly at SAM.gov. Only pay for optional services like proposal writing help, market research tools, or SBA certifications — never for basic registration.
NAICS codes — pick these carefully
Your NAICS code(s) determine which opportunities you'll be matched to and what 'small business size standard' (revenue or employee count) applies to you. You can select multiple NAICS codes, but pick a 'primary' NAICS that best represents your core business — this affects your size-standard determination.
The SAMstream.ai advantage
Tools like SAMstream.ai sit on top of SAM.gov and other public data to make the discovery and paperwork side faster: AI-powered semantic search across live opportunities (instead of manually guessing keywords), historical award/archive search so you can study who has won similar work before, automated first-draft bid packet generation, and a free browser extension to help smooth out the SAM.gov registration and profile process. These tools don't replace understanding the fundamentals in this course — but once you know the fundamentals, they meaningfully speed up how many opportunities you can find and respond to.