The Unique Entity ID (UEI) is a 12-character alphanumeric number that identifies your business to the federal government. It replaced the old DUNS number in April 2022. You need one to be awarded a federal contract or grant, and it's free, issued by SAM.gov.
How to get a UEI
- Create a Login.gov account and sign in to SAM.gov.
- Choose Get a Unique Entity ID if you only need the ID (for example, to be a subcontractor or apply for some grants), or Register Entity if you want to bid on and win federal contracts. Full registration includes the UEI.
- Enter your legal business name and physical address exactly as the IRS and your state have them. SAM.gov validates them; mismatches are the most common delay.
Full steps: SAM.gov registration, step by step.
Where to find your UEI
- In SAM.gov, under your entity's registration details.
- In the confirmation email SAM.gov sent when it was issued.
- On any federal award or purchase order you've received.
How to look up another company's UEI
Use SAM.gov's public entity search by company name, or USAspending.gov, which shows the UEI of every company that has received a federal award.
UEI vs CAGE code vs DUNS
| UEI | 12 characters. Identifies the company. Issued free by SAM.gov. |
|---|---|
| CAGE code | 5 characters. Identifies a business location. Assigned by DLA during SAM registration. See what is a CAGE code. |
| DUNS | 9 digits from Dun & Bradstreet. No longer used by the federal government since April 2022. |
Frequently asked questions
What is a UEI number?
The Unique Entity ID: a 12-character ID that SAM.gov assigns to every business or organization that works with the federal government.
How much does a UEI cost?
Nothing. Get it free on SAM.gov. Be wary of companies charging for it.
How long does it take to get a UEI?
Often minutes if SAM.gov can validate your name and address automatically. If it asks for documents, it can take days or weeks.
Did the UEI replace the DUNS number?
Yes. Since April 4, 2022, the federal government uses the UEI instead of the DUNS number.
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