SAM.gov & Unique Entity ID (UEI) Registration Guide for Grant Applicants

Step-by-step preparation for entity validation, CAGE code assignment, and Grants.gov workspace authorization before federal deadlines.

Published by GrantsLookup — U.S. Federal, State & Foundation Grant Directory Editorial Team • Reading Time: 8 min read • Public Reference Guide (No Login Required)

Document Consistency for Entity Validation

Federal entity validation requires your legal business name, physical street address, and incorporation date to match exactly across your IRS EIN confirmation letter, Secretary of State articles, and bank documentation.

Selecting Primary and Secondary NAICS Codes

North American Industry Classification System (NAICS) codes determine small-business size standards and filter eligibility for state economic development and SBIR/STTR innovation dockets.

Explore More on GrantsLookup — U.S. Federal, State & Foundation Grant Directory

Browse our complete open guide directory or access the interactive tools directly on the homepage.

View All 15+ Guides