How to Transition from DUNS to UEI for Federal Grants in 2026

Understanding the DUNS to UEI Transition

If you're preparing to apply for federal grants in 2026, you need to know about a critical change that's already reshaped the federal grant application process: the transition from DUNS numbers to the Unique Entity Identifier (UEI). While this change officially took effect on April 4, 2022, organizations continue to face confusion and registration issues that can delay or derail grant applications.

The Data Universal Numbering System (DUNS) number, previously issued by Dun & Bradstreet, was the standard identifier for federal grant applicants for decades. The federal government replaced it with the UEI—a government-issued, non-proprietary identifier managed directly through SAM.gov. This shift gives the government direct control over entity registration and eliminates dependency on a private vendor.

For grant seekers navigating the compressed funding timelines of 2026, understanding this transition isn't optional—it's essential. A single registration error can cost you weeks of processing time and potentially cause you to miss critical application deadlines.

What Changed on April 4, 2022

The transition from DUNS to UEI represented a fundamental shift in how organizations register for federal funding opportunities:

Before April 4, 2022:

• Organizations obtained a DUNS number from Dun & Bradstreet (a private company)
• The DUNS number was required for SAM.gov registration
• Grant applications on Grants.gov required the DUNS number
• The process involved coordination between a private vendor and government systems

After April 4, 2022:

• The federal government issues UEIs directly through SAM.gov
• No third-party vendor is required
• All Grants.gov forms now require the UEI instead of DUNS
• The UEI is a 12-character alphanumeric identifier (versus the 9-digit DUNS number)
• Organizations that had DUNS numbers were automatically assigned UEIs

According to federal guidance, this transition was mandated by 2 CFR Part 25 and aimed to streamline the registration process, reduce costs, and give the government direct oversight of entity identification.

How to Locate Your UEI in SAM.gov

If your organization was previously registered in SAM.gov with a DUNS number, you already have a UEI—you just need to find it. Here's the step-by-step process:

For Organizations Already Registered in SAM.gov

1. Navigate to SAM.gov: Go to www.sam.gov and sign in with your login credentials
2. Access Your Entity Registration: Click on "Entity Registration" in the main navigation
3. View Your Active Registration: Your UEI will be displayed prominently at the top of your entity record
4. Document Your UEI: Record this 12-character identifier and store it securely with your grant application materials

Your UEI was automatically generated when the transition occurred. If you had an active SAM.gov registration with a DUNS number before April 2022, your UEI was assigned and is now your permanent identifier.

For New Organizations Without Previous SAM.gov Registration

If your organization has never registered in SAM.gov, you'll obtain your UEI as part of the registration process:

1. Create a Login.gov Account: SAM.gov now requires Login.gov authentication for security
2. Gather Required Documentation: You'll need your organization's legal business name, physical address, Taxpayer Identification Number (TIN), banking information, and information about your organization's structure
3. Begin SAM.gov Registration: Start the entity registration process at SAM.gov
4. Receive Your UEI Immediately: Unlike the old DUNS process that could take days, your UEI is assigned instantly upon starting registration
5. Complete Full Registration: While you receive your UEI immediately, completing your full SAM.gov registration can take 7-10 business days for validation

Important Note: You can begin using your UEI on grant applications as soon as it's assigned, but your SAM.gov registration must be fully active before you can receive federal awards. Plan accordingly and start this process well before application deadlines.

What Changed on Grants.gov Forms

Every standard form package used for federal grant applications has been updated to reflect the DUNS to UEI transition. Understanding these changes helps prevent application errors:

SF-424 (Application for Federal Assistance)

The primary application form now includes:

• Field 8c: Now explicitly requests "Unique Entity Identifier (UEI)" instead of "DUNS Number"
• Format Validation: The field validates for the 12-character alphanumeric format
• No Backward Compatibility: DUNS numbers are no longer accepted in this field

SF-424A and SF-424B (Budget Forms)

These budget-related forms reference the UEI for organizational identification and require consistency with the SF-424.

Other Standard Forms

Forms like the SF-LLL (Disclosure of Lobbying Activities) and various agency-specific forms have been updated to remove DUNS number fields and replace them with UEI fields.

For organizations using AI-powered grant discovery tools like GrantSkyNet, these form updates are automatically reflected in application packages, reducing the risk of submitting outdated forms.

Common Errors Organizations Make During the Transition

Even years after the official transition, organizations continue to make preventable mistakes that delay their grant applications:

Error #1: Using DUNS Numbers on 2026 Applications

Some grant seekers still attempt to enter their old DUNS numbers in the UEI field. This happens because:

• They're using outdated internal documentation
• They haven't updated their grant management databases
• They're copying information from old successful applications

Solution: Audit all your grant application templates and databases to remove DUNS number references and replace them with your current UEI.

Error #2: Assuming Your SAM.gov Registration Is Still Active

SAM.gov registrations expire annually and must be renewed. Many organizations received their UEI in 2022 but haven't maintained their registration.

Solution: Log into SAM.gov at least 30 days before any grant application deadline to verify your registration status. Set calendar reminders for annual renewal at least 60 days before expiration.

Error #3: Mismatching Entity Information

Your UEI is tied to specific entity information (legal name, address, TIN). If this information has changed but hasn't been updated in SAM.gov, your grant application may be rejected.

Solution: Update your SAM.gov registration immediately whenever your organization undergoes legal name changes, address changes, or structural changes (like mergers).

Error #4: Not Understanding the Relationship Between UEI and SAM.gov

Some organizations think they can simply use their UEI without maintaining an active SAM.gov registration. The UEI is just your identifier—your full SAM.gov registration is what makes you eligible for federal awards.

Solution: Think of your UEI as your Social Security number and SAM.gov as your driver's license. You need both to be valid.

Error #5: Waiting Until the Last Minute

New SAM.gov registrations can take 7-10 business days to process fully. Renewals are typically faster but can be delayed if additional documentation is required.

Solution: Begin or renew your SAM.gov registration at least 30 days before you plan to submit grant applications. For first-time registrations, allow 45 days.

2026 Federal Grant Registration Checklist

Before applying for any federal grant in 2026, complete this verification checklist:

SAM.gov Registration Status

• Your SAM.gov registration is active (not expired)
• Your UEI is documented in your grant management files
• Your entity information matches your legal documentation exactly
• Your CAGE code is displayed (for organizations that receive one)
• Your expiration date is at least 60 days beyond your grant application deadline
• All required reps and certs (representations and certifications) are current

Grants.gov Account Configuration

• Your organization is registered on Grants.gov
• Your UEI is correctly entered in your Grants.gov profile
• Your Authorized Organization Representative (AOR) is designated
• Your AOR's authorization is current in SAM.gov
• You can successfully access and download application packages

Internal Documentation Updates

• All grant templates reference UEI (not DUNS)
• Your grant management database includes UEI
• Staff are trained on the UEI requirement
• Your organizational grant procedures manual is updated
• Previous successful application templates are updated to current forms

Banking and Financial Information

• Your banking information in SAM.gov is current
• Your TIN matches IRS records exactly
• Your fiscal year end date is correct

Points of Contact

• Your Electronic Business Point of Contact (EB POC) information is current
• Your Government Business Point of Contact (GB POC) information is current
• Contact email addresses are monitored regularly
• Phone numbers are current and answered during business hours

This checklist is particularly crucial given the significant reduction in federal grant opportunities in 2026. With fewer opportunities available, you can't afford registration-related delays that might cause you to miss application windows.

Troubleshooting Registration Issues

If you encounter problems during the DUNS to UEI transition or SAM.gov registration, here are the primary resources:

SAM.gov Federal Service Desk

• Phone: 866-606-8220 (U.S. callers) or 334-206-7828 (international)
• Hours: Monday through Friday, 8:00 AM to 8:00 PM ET
• Online Help: fsd.gov

Grants.gov Support

• Phone: 800-518-4726 (U.S. callers)
• Email: support@grants.gov
• Hours: 24/7 support available

Common Issues and Resolutions

Issue: Can't find my UEI in SAM.gov

• Log in to SAM.gov and navigate to Entity Registration
• If you previously had a DUNS number and an active registration, your UEI was assigned automatically
• If you can't locate it, contact the Federal Service Desk with your organization's legal name and TIN

Issue: UEI not recognized on Grants.gov

• Verify your SAM.gov registration is active (not just that you have a UEI)
• Allow 24-48 hours after SAM.gov registration for systems to sync
• Ensure your UEI is entered correctly (12 characters, alphanumeric)

Issue: Need to update entity information

• Log in to SAM.gov and update your entity registration
• Updates typically process within 1-2 business days
• Your UEI remains the same even when entity information changes

How Modern Tools Can Help

The administrative complexity of federal grant applications—including registration requirements like the UEI transition—is one reason many organizations are turning to technology solutions. Platforms like GrantSkyNet help grant seekers stay current with changing federal requirements by providing:

• Automated alerts when your SAM.gov registration is approaching expiration
• Verification that your UEI is correctly formatted before submission
• Updated application forms that reflect current federal requirements
• Integration with Grants.gov to streamline the application process

While no tool can complete your SAM.gov registration for you (this must be done by authorized representatives of your organization), the right technology can help you avoid preventable errors and missed deadlines.

Looking Ahead: Future Changes to Federal Grant Registration

The federal government continues to modernize its grant-making systems. In 2026, several initiatives are underway:

Simpler.Grants.gov: The new grant search interface launched to provide more intuitive access to federal funding opportunities. It maintains the same registration requirements but offers improved search and discovery.

Streamlining Federal Grants Act: This legislation aims to improve consistency across federal grant-making agencies, which may lead to additional registration or reporting requirements in coming years.

Enhanced Fraud Prevention: Expect continued enhancements to entity validation processes as the government works to prevent fraud and ensure funds reach legitimate organizations.

Staying informed about these changes is essential. For ongoing updates about federal grant requirements and opportunities, explore more grant insights on topics ranging from compliance requirements to writing competitive proposals.

Key Takeaways

The transition from DUNS to UEI is complete, but its impact on federal grant applications remains significant in 2026:

1. Your UEI is permanent: Unlike DUNS numbers that could change, your UEI stays with your organization
2. SAM.gov registration still expires annually: Having a UEI doesn't exempt you from maintaining active registration
3. No federal forms accept DUNS numbers anymore: Update all templates and internal documentation
4. Start early: Registration and renewal processes can take weeks, especially if issues arise
5. Verification is crucial: Double-check your UEI and registration status before every application

The DUNS to UEI transition removed a private vendor from the federal grant ecosystem and gave the government direct control over entity identification. For grant seekers, this means simpler initial UEI assignment but the same ongoing responsibility to maintain accurate, current registration information.

Don't let registration requirements derail your grant applications. Verify your UEI and SAM.gov registration status today, set reminders for annual renewal, and build registration verification into your standard grant application workflow. With proper preparation and attention to these administrative details, you can focus your energy where it matters most—developing competitive proposals that secure funding for your organization's mission.

Ready to streamline your federal grant search and application process? Start your free trial with GrantSkyNet to discover opportunities that match your mission and ensure you're working with the most current federal forms and requirements.