What does uei stand for

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Last updated: April 4, 2026

Quick Answer: UEI stands for Unique Entity Identifier. It is a 12-character alphanumeric identifier assigned to entities doing business with the U.S. federal government, used for tracking federal awards. Previously, it was known as the DUNS number.

Key Facts

What is a UEI?

The UEI, or Unique Entity Identifier, is a 12-character alphanumeric code that identifies entities doing business with the U.S. federal government. This identifier is crucial for organizations that receive or apply for federal grants, contracts, or other financial awards. The UEI system was implemented to streamline the process of identifying and tracking entities within the federal awards lifecycle, aiming to improve efficiency and transparency.

Why was the UEI introduced?

The transition to the UEI was part of a broader government initiative to modernize and simplify the entity identification process. Previously, the Data Universal Numbering System (DUNS) number, issued by Dun & Bradstreet, served as the primary identifier. However, the federal government sought a more integrated and government-controlled system. The UEI is now generated and managed directly by the U.S. General Services Administration (GSA) through the System for Award Management (SAM.gov) website. This change aims to eliminate the need for a third-party identifier and create a single, unified system for entity registration and identification.

Key Differences from the DUNS Number

The most significant change is the shift from a third-party identifier (DUNS) to a government-issued one (UEI). The DUNS number was a 9-digit numeric code provided by Dun & Bradstreet, a private company. The UEI, on the other hand, is a 12-character alphanumeric code that is free to obtain directly from SAM.gov. Entities no longer need to rely on Dun & Bradstreet for this identification. The UEI is intended to be a more integrated part of the federal procurement and award process.

Who Needs a UEI?

Any entity that intends to apply for, receive, or manage federal awards must have a UEI. This includes:

If your organization plans to do business with the U.S. federal government in any capacity involving federal funds, obtaining a UEI is a mandatory step.

How to Obtain a UEI

Obtaining a UEI is a straightforward process integrated into the entity registration on SAM.gov. Here’s how it generally works:

  1. Register on SAM.gov: Visit the System for Award Management website (SAM.gov) and create an account if you don't already have one.
  2. Complete Entity Information: You will be prompted to enter detailed information about your entity, including legal name, address, and other organizational details.
  3. Automatic Assignment: Once you complete the required sections of your entity registration and it is approved, a UEI will be automatically generated and assigned to your entity. You do not need to apply for the UEI separately; it is part of the SAM.gov registration process.

Entities that previously had a DUNS number have had their UEIs automatically assigned based on their existing DUNS information. However, it is essential to verify and ensure the accuracy of your entity information on SAM.gov.

The Importance of UEI in Federal Awards

The UEI serves as a unique, digital identity for entities within the federal award ecosystem. It simplifies the process for government agencies to identify, verify, and track entities receiving federal funds. This leads to improved data accuracy, reduced administrative burden, and enhanced accountability in the management of federal resources. For award recipients, having an accurate and up-to-date UEI is essential for receiving payments, reporting on award activities, and ensuring compliance with federal regulations.

Transition Timeline

The transition from the DUNS number to the UEI was a phased process. The official deadline for the mandatory use of the UEI for all federal awards was April 4, 2022. After this date, the DUNS number was no longer accepted for federal award purposes. Entities that were already registered in SAM.gov prior to this transition had their UEIs automatically generated. New entities registering in SAM.gov receive their UEI as part of the registration process.

Conclusion

In summary, the UEI (Unique Entity Identifier) is the current standard for identifying entities doing business with the U.S. federal government. It is a free, 12-character alphanumeric code obtained through SAM.gov registration and has replaced the older DUNS number. Understanding and obtaining a UEI is a fundamental requirement for any organization seeking or managing federal awards.

Sources

  1. SAM.gov - Unique Entity IDfair-use
  2. Federal Register: Federal Agency Notification of a Transition to the Unique Entity Identifier (UEI)fair-use
  3. Unique Entity Identifier - WikipediaCC-BY-SA-4.0

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