How to Use Grants.gov 2026: Step-by-Step Guide

This guide is for: Grant applicants at nonprofits, universities, small businesses, state and local governments, and tribal organizations who need to use Grants.gov to find federal funding opportunities and submit applications.

Last updated: June 2026

Platform note: In 2025, Grants.gov integrated the modernized search interface from simpler.grants.gov as the default search for non-logged-in users. This guide reflects the current 2026 platform state, including the simpler.grants.gov integration, the retirement of the mobile app (summer 2025), and changes to the login system.

Full answer: Using Grants.gov requires three systems in sequence: SAM.gov registration (7-10 business days, free, annual renewal required), a Grants.gov account linked to your SAM.gov UEI, and Workspace to collaborate on and submit application packages. Several major agencies, including NIH (ASSIST), NSF (Research.gov), and DOJ (JustGrants), post opportunities on Grants.gov but require submission through their own portals. Always read Section IV of the NOFO before starting any application.

June 2026 Source Review by Grantsights

Editorial accountability: Source review by Grantsights rechecked Grants.gov applicant training, registration guidance, FAQs, Workspace help, and SAM.gov entity-registration guidance against portal notes in the Grantsights database. According to Grants.gov Applicant Training, Workspace lets applicants collaborate on federal application packages. According to Grants.gov Applicant Registration, applicants need an organization profile connected to a UEI and Login.gov-linked account. According to Grants.gov Applicant FAQs, applicants can manage multiple organization profiles from one Grants.gov account. According to SAM.gov, entity validation and annual renewal remain separate from Grants.gov.

Based on our analysis of Grants.gov search and submission records, the bad fit is using Grants.gov as the only workflow tool. For example, one applicant may find a DOJ opportunity on Grants.gov, but the actual package and award management path can move through JustGrants after the listing.

Decision checklist:

What Official Sources Don't Tell You

Official help pages show how Grants.gov works, but they do not rank opportunities by applicant burden or portal complexity. The practical gap is submission friction: Workspace, ASSIST, Research.gov, JustGrants, FEMA GO, and state pass-through systems create different timelines. Use the free eligibility checker to see which open federal calls fit your organization and the date to act by, then confirm each call's portal before you start.

How to Use Grants.gov: A Step-by-Step Guide for 2026

Data note: System information reflects current platform state as of April 2026, drawn from official Grants.gov help documentation, agency NOFO requirements, and platform change announcements. Grants.gov is an evolving platform; verify current requirements against the official help center for time-sensitive details.

According to Grants.gov, the platform hosts more than 3,000 active federal funding opportunities from 26 grant-making agencies at any given time. Federal agencies distributed more than $800 billion in grants and contracts in FY2024 per USASpending.gov data, virtually all requiring active SAM.gov registration from the receiving entity. It's where virtually every federal competitive grant opportunity is posted. But "posted on Grants.gov" doesn't mean "submitted through Grants.gov." NIH, NSF, DOJ, and FEMA use their own submission portals for applications that are found on Grants.gov. Understanding this distinction prevents one of the most common and costly mistakes in federal grant application.

A common issue with failed submissions isn't a technical error; it's an applicant who spends weeks on an application package only to realize on day one of the open window that the agency uses a different portal entirely. Read Section IV first. Always.

This guide covers everything after you have decided to pursue a federal grant: how to get your systems set up, how to find opportunities, how Workspace works, which agencies use which portals, the technical errors that actually cause submissions to fail, and what changed in 2025 that affects applicants in 2026.

For the detailed breakdown of SAM.gov registration and its relationship to Grants.gov, see SAM.gov vs. Grants.gov: What's the Difference?. This guide picks up after your UEI is in hand.

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Step 1: The Three-System Stack Every Applicant Needs

Federal grant submission runs through three systems in a specific sequence:

1. Login.gov (authentication) Login.gov is the federal government's single sign-on service. It's required for Grants.gov authentication since February 2022. Create a Login.gov account using a work email address you control. Login.gov uses multi-factor authentication. PIV/CAC card login was removed from Grants.gov in 2025; Login.gov is the only authentication method.

2. SAM.gov (organizational identity and UEI) SAM.gov is managed by GSA and is where your organization gets its Unique Entity Identifier (UEI) and maintains its federal entity registration. DUNS numbers were retired April 4, 2022; the UEI is the only current identifier. SAM.gov registration is free but takes 7-10 business days for full validation. Registration expires every 365 days and must be renewed annually. Your organization needs an active SAM.gov registration before it can submit grant applications through Grants.gov.

3. Grants.gov (opportunity discovery and submission) Grants.gov is managed by HHS and is the primary federal grant portal. Create your Grants.gov account, link it to Login.gov, and add your organization profile by entering your SAM.gov UEI.

The propagation delay most guides miss: After SAM.gov shows "Active" status, there's a 24-48 hour delay before Grants.gov can verify that status and allow submission. Don't try to submit an application immediately after SAM.gov becomes Active; wait 24-48 hours. Applicants who don't know about this delay can miss deadlines while refreshing a submission that the system isn't ready to accept.

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Step 2: Setting Up Your Grants.gov Account and Roles

Create your account: Go to grants.gov and create an account using Login.gov. Add an organization profile by entering your UEI. The person who sets up the organizational profile typically becomes the EBiz Point of Contact (EBiz POC).

EBiz POC role: The EBiz POC is automatically assigned "Expanded AOR" status, which allows both application submission and management of all organizational settings and other users' roles. As of January 21, 2023, EBiz POC functions were consolidated into the main account, no separate account is needed.

Authorizing other users: Three core roles to understand before your team tries to submit:

• Expanded AOR: Can submit applications and manage all org settings; auto-assigned to EBiz POC
• Standard AOR: Can submit applications when added as a Workspace participant
• Workspace Manager: Can create new workspaces and manage workspace-level access

The EBiz POC must explicitly grant roles to other users. This step is frequently skipped. If a staff member or consultant tries to submit and receives a "not authorized" error, the EBiz POC has not yet granted them AOR status. The EBiz POC is a single point of failure: if that person leaves the organization or becomes unavailable without assigning roles to others, the entire organization loses submission capability.

Account deactivation: Grants.gov accounts deactivate after 365 days of inactivity. The system sends four warning emails. Reactivate through Login.gov.

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Step 3: Finding Grant Opportunities on Grants.gov

Simpler.grants.gov integration: In 2025, Grants.gov integrated the modernized simpler.grants.gov search interface as the default for non-logged-in users. The classic search now requires logging in. For most applicants, simpler.grants.gov is the faster and more functional search tool.

Key search filters on simpler.grants.gov:

• Status: Open, Closed, Forecasted, Archived
• Funding instrument type: Grant, Cooperative Agreement, Other
• Eligibility (13 categories, see below)
• Agency and top-level agency
• Assistance Listing Number (formerly CFDA number, format: ##.###, e.g., 93.243)
• Close date range and posted date range
• Cost sharing required (yes/no)
• Keywords (supports minus-sign exclusion: -research excludes results containing "research")

Eligibility categories for filtering: State governments, county governments, cities/townships, special district governments, independent school districts, public higher education, private higher education, public housing and Indian housing authorities, nonprofits with 501(c)(3), nonprofits without 501(c)(3), for-profit organizations other than small businesses, small businesses, Native American tribal governments, and individuals.

CFDA vs. Assistance Listing Number: These terms are interchangeable. CFDA (Catalog of Federal Domestic Assistance) numbers are the same as Assistance Listing Numbers; the official name changed but both terms are in active use by grant professionals.

Setting up email alerts: Click "Save Search" on any search results page to save your filters and receive email notifications when new matching opportunities are posted. This is the most efficient way to monitor specific agencies or program areas without checking manually.

Forecast opportunities: Grants.gov posts "Forecasted" opportunities months before they open. Filter by Status = Forecasted to find upcoming competitions. Forecasts include estimated timelines and funding amounts before the official NOFO drops, giving applicants time to prepare narrative drafts, identify program officers, and build partnership letters before the application window opens.

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Step 4: Reading the Opportunity Listing Before You Apply

Every Grants.gov opportunity listing contains several layers. Read them in this order before touching the application forms:

Synopsis/Forecast: Early notice of an upcoming opportunity; no application package yet; shows estimated timeline and funding range.

Opportunity listing: The live NOFO with funding opportunity number, posted date, close date, eligible applicants, expected number of awards, award floor and ceiling, and the full program description. This is where you confirm you are eligible before investing time in an application.

Full NOFO document (always read these sections first):

• Section III: Eligibility. Confirm your organization type qualifies before opening the application package.
• Section IV: Application and Submission. This section specifies which portal to use (Grants.gov, ASSIST, Research.gov, JustGrants, etc.) and attachment formatting requirements.
• Section V: Review Criteria. Understand how your application will be scored before writing a word.

Application package: The downloadable package containing required forms (SF-424, project narrative attachments, budget forms, certifications). This is what you fill out in Workspace.

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Step 5: Using Workspace to Collaborate and Submit

Workspace is the collaborative submission environment. Multiple team members can work on different forms simultaneously in the same application package.

Three workflow tiers:

• Small teams (1-2 users): Download individual forms, complete offline, re-upload. Simple but manual.
• Mid-size teams (3-5 users): Assign specific webforms to specific users; Workspace Owner manages access; AOR submits when all forms complete.
• Larger teams with external collaborators: Workspace Owner controls form-level access; external consultants (grant writers, evaluators) can be added by entering their Grants.gov username or email, they do not need to be inside your organization's SAM.gov registration.

The locking behavior most guides miss: When any user opens a webform, the system locks it to that user. Other users can't edit that form until the first user saves and closes it. The "simultaneous" work in Workspace applies to working on different forms, not the same form. Coordinate who owns which form before starting to avoid bottlenecks. A typical problem: two people try to work on the SF-424 at the same time, one person's session locks the form, the other gets locked out with no warning about when the lock releases.

For PDF forms: The last upload wins. If two users upload different versions of the same PDF form, the later upload overwrites the earlier one. Communicate clearly about who is submitting the final version of each form.

External collaborators: Adding an outside grant writer or consultant is as simple as entering their Grants.gov username or email in the Workspace participant settings. They do not need a SAM.gov registration or organizational affiliation, only a Grants.gov account.

After submission: The system sends an email confirmation and the application moves through these status stages: Submitted, Validated, Received by Agency, Agency Tracking Number Assigned. Track your submission in Grants.gov under "Track My Package." If you receive a VIRUSDETECT or other error, address it and resubmit before the deadline. A corrected submission after the deadline is considered late, even if the original was on time.

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Step 6: Which Agencies Use Which Portals

Grants.gov is where most opportunities are found. It's not where all applications are submitted. According to agency-specific NOFO requirements reviewed as of April 2026, here is the actual breakdown for major agencies:

Submit through Grants.gov Workspace: SAMHSA, HRSA, USDA (most programs), EPA, DOL, DOT/FTA, HUD (some programs)

Submit through agency-specific portals:

• NIH: NIH ASSIST (recommended) or institutional system-to-system. According to NIH, ASSIST processes more than 50,000 competitive research applications annually and includes NIH-specific compliance checks that Grants.gov Workspace does not perform. NIH stopped posting NOFOs in the NIH Guide in FY2026; grants.gov is now the single official source.
• NSF: Research.gov (strongly recommended). According to NSF, approximately 40,000 proposals are submitted per year through Research.gov. Grants.gov Workspace technically works but if a proposal passes Grants.gov pre-check and fails NSF's post-check, corrections can only be made through Research.gov.
• DOJ (most programs): JustGrants replaced Grants.gov submission for most DOJ competitive grants.
• FEMA (Hazard Mitigation): FEMA GO is the submission portal for Hazard Mitigation Grant Program, BRIC, and FMA. Some FEMA competitive programs still use Grants.gov.
• ED: Some Department of Education programs use Grants.gov; others use agency-specific systems for post-award management (G5). Read Section IV.

The rule: Section IV of every NOFO specifies the required submission portal. Never assume. Read Section IV before starting any application.

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Technical Errors That Actually Cause Failed Submissions

These are the most common reasons applications are rejected or fail processing, ranked by frequency:

1. Attachment filename violations Maximum 50 characters. Allowed characters: letters, numbers, the _ (underline) character, hyphen, space, period, parentheses, curly and square brackets, ampersand, tilde, exclamation point, comma, semicolon, apostrophe, and @ # $ % + =. No accented characters, no em dashes, no special Unicode characters. Check every filename before uploading.

2. Duplicate filenames Two files with identical names break automated processing. Rename every attachment uniquely before uploading, even if they are in different form sections.

3. Adobe Reader version mismatch PDF forms must be completed with a compatible Adobe Reader version. Incompatible versions produce Schema Validation Errors, Incompatible Version errors, or "File Damaged" messages. Download a fresh package and use a supported Adobe version.

4. SAM.gov not Active at submission Your SAM.gov registration must show "Active" status (not "Submitted" or "Pending") when you submit. Allow the 24-48 hour propagation delay after SAM.gov becomes Active before attempting to submit.

5. User lacks AOR role The submitter must be a Standard AOR or Expanded AOR. If the EBiz POC has not granted that role, the submission is blocked. Verify roles before the application deadline, not during it.

6. Submitting after the deadline The deadline is typically 5:00 PM local time. A corrected submission after the deadline is considered late. Submit 24-48 hours early to leave time for error correction.

7. Pasting from Microsoft Word Word paste inserts hidden formatting characters. Paste into Notepad (Windows) or TextEdit in plain text mode (Mac) to strip formatting before pasting into form fields.

Error code reference:

• VIRUSDETECT: Check filename length and characters AND run antivirus on the files
• Broken Pipe: Submission may or may not have been received; check Track Your Package immediately before resubmitting
• HTTP 500: Temporary server issue; wait and retry; call support if it persists

Support: 1-800-518-4726, support@grants.gov. Have ready: Funding Opportunity Number, browser and OS version, form name, Adobe Reader version, error message text, your username, and UEI.

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What Changed in 2025 That Affects 2026 Applicants

Simpler.grants.gov is now the default search. The modernized interface is integrated into the main site for non-logged-in users. The full transition from grants.gov to simpler.grants.gov is projected for approximately 2027. Login-based access to the classic search remains available.

Mobile app was retired in summer 2025. Grants.gov now relies exclusively on its mobile-responsive website. If you used the app, switch to the mobile site.

DOGE disruptions in 2025. From approximately April to June 2025, DOGE had control of Grants.gov systems and required NOFOs to be approved before posting, creating backlogs. This was resolved after June 2025. Separately, DOGE-driven grant terminations in FY2025 eliminated thousands of existing grants across NSF, AmeriCorps, and other agencies. In 2026, some agency categories have fewer open opportunities than pre-2025. This is a funding availability issue, not a Grants.gov platform issue. Applicants should not assume previously recurring NOFOs will reopen on the prior schedule.

Login.gov is the only authentication method. PIV/CAC card login was removed in 2025. All users must authenticate through Login.gov.

NIH stopped posting NOFOs in the NIH Guide. As of FY2026, grants.gov is the single authoritative source for NIH funding opportunities. NIH Guide postings have ceased.

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What Most Grants.gov Guides Get Wrong

The agency portal assumption. Most guides treat Grants.gov as the universal submission portal. It is not. NIH ASSIST and NSF Research.gov handle the majority of research grant submissions. JustGrants handles most DOJ submissions. Guides that skip this leave applicants trying to submit through the wrong portal.

DUNS references. Any guide mentioning DUNS is out of date. DUNS was retired April 4, 2022. There is no DUNS anymore.

The EBiz POC single point of failure. Most guides mention the EBiz POC as part of registration but don't flag that if this person is unavailable and hasn't delegated AOR roles, the entire organization loses submission capability. Organizations should have at least two Expanded AORs active at all times.

SAM.gov expiration consequences. An expired SAM.gov means you cannot submit new applications AND cannot draw down payments on existing awards. Most guides cover initial registration but not annual renewal. Mark your SAM.gov expiration date in your calendar and start renewal 60-90 days early.

The forecast opportunity advantage. Most guides treat Grants.gov search as a last-minute activity. Searching for Forecasted opportunities months in advance lets applicants prepare before the NOFO drops, a significant competitive advantage in programs with short application windows.

For related content, see SAM.gov vs. Grants.gov: What's the Difference?, how to write a federal grant proposal, and best grants for nonprofits 2026.

Related Guides

• Grants.gov vs SAM.gov vs USASpending.gov
• How to Apply for Federal Grants on Grants.gov
• SAM.gov vs Grants.gov

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Sources

• Grants.gov official help center: grants.gov/help
• Grants.gov Workspace guide: grants.gov/applicants/workspace-overview
• SAM.gov entity registration: sam.gov/content/entity-registration
• Simpler.grants.gov: simpler.grants.gov
• NIH ASSIST submission portal: public.era.nih.gov/assist
• NSF Research.gov: research.gov
• DOJ JustGrants: justicegrants.usdoj.gov
• FEMA GO: go.fema.gov
• HHS Common Data Standards: acf.hhs.gov
• Login.gov: login.gov
• Grants.gov system status: grants.gov/system-to-system/grantor-system-alerts