Before you start
Gather your legal business name exactly as it appears on your formation documents, your taxpayer identification number, your bank details for electronic payment, and a physical address. Mismatches between these records cause most first-attempt failures, because SAM.gov validates against IRS and bank records that must agree with each other.
Registration on SAM.gov is free. Third parties may offer to register you for a fee; nothing they do requires payment on the government side.[1]
Get your UEI
The Unique Entity ID replaced the DUNS number as the government's identifier for your business. It is issued inside SAM.gov itself: request it first, because everything downstream attaches to it.
Entity registration
The full entity registration covers core data, assertions, representations and certifications, and points of contact. Work it in order and save often; the representations section is where legal review time is best spent, because those answers carry certification weight on every future bid.
NAICS & size standards
Choose a primary NAICS code that matches your actual revenue center, then add secondary codes for work you can evidence. Size standards attach to codes, so your small-business status can differ by code. Our free NAICS lookup shows the size standard beside each code.
Where registrations stall
Three states account for most stalled registrations: TIN validation mismatches (fix the name, not the number), bank detail typos discovered only at the payment step, and expired notarized letters where an entity administrator changed mid-process. Each is faster to prevent than to appeal.
After you are registered
Registration must be renewed annually, and lapses take you off active-award eligibility. Put the renewal on the calendar the day you finish. Then the real work starts: qualifying opportunities against your codes, which is the job Winrove Intelligence was built for.
[1] SAM.gov, official public guidance: registration is free of charge. Verify current requirements at sam.gov; this guide is editorial assistance, not legal advice.