How to Fill Out and Submit the SF-424: Application for Federal Assistance

To fill out the SF-424, the Application for Federal Assistance, you register your organization in SAM.gov, gather the identifiers and budget figures the form asks for, and then complete its 21 numbered fields using the exact program information from your Notice of Funding Opportunity. Nearly every applicant submits the finished form through Grants.gov Workspace, and the electronic submission itself counts as the authorized representative’s signature. The trap most first-time applicants fall into is timing: SAM.gov registration alone can take up to ten business days, so the form is not something you open the week a grant deadline hits.

Register in SAM.gov First

Before you can submit anything, your organization needs a Unique Entity Identifier (UEI) and an active entity registration in SAM.gov. The UEI is a 12-character alphanumeric code the federal government assigns directly, and it replaced the old DUNS number system in April 2022.¹ You receive a UEI as part of registration, and it goes in field 8c of the SF-424.

Registration can take up to 10 business days to become active, and it must be renewed annually.² An expired registration will block your application from going through. Grant announcements often give applicants only 30 to 60 days to submit, so burning a third of that window on registration paperwork can cost you the deadline.

Registration is free.² Any email or phone call demanding payment to register is a scam. Official federal sites end in .gov or .mil; payment requests from .com addresses are fraudulent.

What to Have in Hand Before You Open the Form

Once SAM.gov shows your registration as active, gather these before you sit down with the SF-424:

Your Employer Identification Number (EIN), which the IRS assigns. This goes in field 8b. Organizations outside the United States enter 44-4444444 as a placeholder.³
The Assistance Listings number (formerly the CFDA number), the funding opportunity number, and the funding opportunity title. All three come straight from the Notice of Funding Opportunity (NOFO) and belong in fields 11, 12, and 13.
Your budget figures broken into federal dollars requested, your organization’s cost share, and any state, local, or other matching funds. These have to match the detailed budget you attach elsewhere in the package.
The authorized representative’s name, title, and contact information. That person must have documented authority to bind your organization to a federal award, and some agencies require you to submit the governing body’s authorization with the application.³

Walking the 21 Fields

The SF-424 has 21 numbered fields. A few are simple name-and-address entries. Others reject applications quietly when filled in wrong.

Fields 1 Through 5: Submission Type and Identifiers

Field 1 asks for the type of submission: pre-application, application, or changed/corrected application. Most applicants choose “Application.” Pick “Pre-application” only if the NOFO specifically requires one. Use “Changed/Corrected Application” only to fix a package you already submitted, and be aware that unless the agency says otherwise, you cannot use this option to submit revisions after the deadline passes.³

Field 2 is a separate question about the type of application itself: “New” for a first-time request, “Continuation” to extend an existing award into its next budget period, or “Revision” to change the financial terms of a current award. Revision requires a letter code showing whether you’re increasing or decreasing the amount or duration.³ For new applications, leave the federal award identifier in field 5b blank.

Fields 6 Through 8: Applicant Information

Field 6 is where agencies sometimes pre-populate a state application identifier if your state participates in intergovernmental review. Field 8 is the main applicant block: legal name, UEI, EIN, address, and a contact person for questions about the application. The contact person in field 8f does not have to be the authorized representative who signs in field 21. They are often different people.

Fields 9 Through 11: Agency and Program

Enter the federal agency’s name in field 9 and the Assistance Listings title and number in fields 10 and 11. Copy them exactly from the NOFO. A wrong Assistance Listings number can route your application to the wrong program or trigger an automatic rejection during system validation.

Fields 12 Through 14: Funding Opportunity and Project Areas

Fields 12 and 13 take the funding opportunity number and title from the NOFO. Field 14 identifies the geographic areas affected by your project. It matters only when the geographic impact of your work differs from the performance site you list on the separate SF-424 Project/Performance Site Location form.³

Fields 15 Through 17: Project Title, Districts, and Dates

Field 15 is your project title. Make it descriptive and specific. Some agencies limit this field to 200 characters including spaces.⁴ Field 16 captures the congressional districts for both the applicant’s location and the project’s location. Field 17 is the proposed project start and end dates.

Field 18: Estimated Funding

This is the money block. Separate lines break the total budget into federal amount requested, your organization’s cost share, state, local, and other contributions, and program income. The total calculates automatically.⁵ These numbers must match your detailed budget narrative. A mismatch between the SF-424 summary and the attached budget is one of the fastest ways to get flagged in review.

Fields 19 Through 21: Review, Debt, and Signature

Field 19 asks whether your application is subject to intergovernmental review under Executive Order 12372. About 20 states and territories maintain a Single Point of Contact (SPOC) that coordinates this review.⁶ If your state participates, you may need to submit the application to the SPOC at the same time you file with the agency. If your state is not on the list, select the option showing the program is not covered or your state has not selected it for review.

Field 20 asks whether your organization is delinquent on any federal debt. If yes, attach an explanation. Field 21 is the authorized representative’s signature and date. When you submit through Grants.gov, the electronic submission itself is the signature.³

What Your Signature Actually Commits You To

Signing field 21 is a binding legal certification, not an administrative check. You are certifying that neither your organization nor its principals are currently debarred, suspended, or otherwise excluded from federal awards, and that no one in your leadership has been convicted of fraud or a criminal offense connected to a public transaction within the past three years.⁷

You are also certifying compliance with the Drug-Free Workplace Act, which requires grant recipients to publish a workplace drug policy, run an awareness program, and report any employee drug conviction to the awarding agency within ten calendar days.⁷ False information on any of these certifications exposes your organization to penalties under the False Claims Act, currently $14,308 to $28,619 per false claim after the most recent inflation adjustment.⁸

One more thing sits behind that signature: your NOFO will almost always require companion forms alongside the SF-424, most commonly SF-424A (non-construction budget), SF-424B (non-construction assurances), or their construction counterparts SF-424C and SF-424D. If lobbying with non-federal funds has touched the award, SF-LLL is also required, and failing to file it when required carries civil penalties between $10,000 and $100,000 per violation.⁹ A missing mandatory form is one of the most common reasons Grants.gov rejects a package outright.¹⁰

Submitting Through Grants.gov Workspace

Nearly all federal grant applications flow through Grants.gov Workspace. Find your funding opportunity, create a workspace for it, then complete the required forms one of three ways: online in your browser, offline after downloading them, or by reusing forms from a previous application.¹¹

Working online is usually simplest. Click the form’s “Webform” link, fill in each section, and hit “Check for Errors” before closing. The system auto-saves every five minutes, but click “Save” periodically anyway. If you work offline, download the form, complete it, and upload it back into the workspace.¹¹

Before final submission, click “Check Application” on the Forms tab. That runs a pre-check across the whole package. Fix anything it flags, then submit. Only the authorized representative named in field 21 can push the submit button.

After You Hit Submit

Grants.gov sends up to three email notifications. The first confirms the system received your package. The second, within 24 to 48 hours, tells you whether the application passed validation or was rejected for errors. A third confirms the agency retrieved the application.¹² Statuses progress through “Validated,” “Received by Agency,” and eventually “Agency Tracking Number Assigned.”

If validation kicks your application back, you can submit a changed/corrected version, but only if the deadline has not passed. Some agencies offer a narrow resubmission window of two business days for corrections; submissions after the deadline are rarely accepted.¹³ Experienced grant writers submit several days early for exactly this reason.

Common Validation Errors

Most rejections come from a small set of preventable mistakes:

A mandatory form listed in the NOFO is missing from the package.
Attachment file names run longer than 50 characters or contain special characters. Stick to letters, numbers, underscores, and hyphens.
A required field is blank, or has an invisible blank space in it. Use backspace to clear stray spaces.
Downloaded forms were edited with an incompatible version of Adobe Reader, corrupting the files.

¹⁰

Running “Check for Errors” on each form and “Check Application” on the full package catches most of these before they cost you the deadline. If a rejection email arrives and the cause isn’t obvious, Grants.gov’s support desk can help diagnose it, but only if you still have time on the clock.

1
General Services Administration. Implementing the Unique Entity ID
2
SAM.gov. Entity Registration
3
Grants.gov. Application for Federal Assistance SF-424 V4.0 Instructions
4
National Institutes of Health. G.200 – SF 424 (R&R) Form
5
U.S. Department of Agriculture. SF-424 and SF-424A Instructions
6
The White House. Intergovernmental Review SPOC List
7
U.S. Department of Energy. Certifications and Assurances Use SF-424
8
Federal Register. Civil Monetary Penalties Inflation Adjustments for 2025
9
Grants.gov. Disclosure of Lobbying Activities SF-LLL
10
Grants.gov. Encountering Error Messages
11
Grants.gov. Quick Start Guide for Applicants
12
U.S. Department of Agriculture. Grants.gov Submission Procedures and Tips for Applicants
13
National Institutes of Health. Submit a Changed/Corrected Application