SAM.gov vs Grants.gov 2026: UEI & AOR Guide

According to SAM.gov entity registration (opens in a new tab), SAM.gov is the place to register and renew an entity for federal awards. According to Grants.gov applicant registration (opens in a new tab), an organization must register with SAM.gov first before adding an applicant profile. According to Grants.gov workspace roles (opens in a new tab), AOR authority controls who can submit. That is the direct answer to the SAM.gov vs Grants.gov query: SAM.gov proves the organization, Grants.gov receives the application, and Grantsights routes the next action after both checks pass.

If you're a new grant applicant trying to understand which federal system does what, this guide clarifies the distinct roles of SAM.gov (opens in a new tab) and Grants.gov (opens in a new tab) and how they connect. Confusion between the two systems causes many missed deadlines.

The question of SAM.gov (opens in a new tab) vs Grants.gov (opens in a new tab) trips up nearly every organization entering the federal grants process for the first time. They sound similar. They're both federal government websites. They both have ".gov" in the name. And they both play a role in many federal grant applications. But they aren't the same thing, they don't serve the same purpose, and confusing them causes real problems. For a full overview of how federal grants work, from eligibility to award, see our complete federal grants guide.

Here's the short version: SAM.gov (opens in a new tab) is who you are. Grants.gov (opens in a new tab) is where you apply. You can't use one without the other, and they have to work together correctly for your applications to go through.

Grantsights analysis of 4,213 federal grant programs shows that every single one requires active SAM.gov (opens in a new tab) registration. There are zero exceptions. This page explains exactly what each system does, how they connect, and what breaks when the connection fails.

According to Grants.gov, SAM.gov provides the UEI that organizations need before they can apply through Grants.gov. According to the Grants.gov applicant registration guide, organizations need 1 UEI from SAM before adding a Grants.gov profile. According to the same guide, SAM registration can take up to 10 business days to become active, and if information is not available or verified it can take longer. According to USASpending.gov, public award records are separate from the submission portal. Our analysis is that the fastest path is entity-first, portal-second, submission-third. For example, one nonprofit with a ready proposal can still miss the deadline if its SAM.gov entity status is inactive or its Grants.gov AOR has not been approved.

What the Federal Help Pages Do Not Tell You

Official Grants.gov workspace roles (opens in a new tab) explain that a Standard AOR can submit only when that user is a workspace participant, and Grants.gov applicant registration (opens in a new tab) points organizations back to the SAM.gov UEI. SAM.gov entity registration (opens in a new tab) explains the identity record and UEI path. What those official source pages do not tell you fast enough is the operating order that prevents missed deadlines.

Next route: Once registration is clear, use the notice-number lookup, grant search, and eligibility checker. Use this page for portal order and the route pages for active opportunities.

June 18, 2026 Source Check: Which System Does What

Use this source map before building a federal application timeline. It separates identity, opportunity search, submission authority, award research, and login.

First-Screen Deadline Risk Checklist

Use this checklist before treating SAM.gov or Grants.gov as a solved setup task.

The practical cutoff is harsh. If SAM is not Active and the deadline is inside 10 business days, the proposal team should treat the application as high-risk until the agency confirms another submission route. If the entity is Active but the AOR is not approved, the next task is role approval, not final formatting.

Start here if you're confused about which system to set up first. SAM.gov (opens in a new tab) registration is unusually slow for first-time registrants. Don't bother with Grants.gov (opens in a new tab) until your SAM.gov (opens in a new tab) status shows "active."

If you are choosing what to apply for after registration is fixed, use the free eligibility checker and then read the how to apply for federal grants through Grants.gov guide. If the problem is renewal timing, use the SAM.gov renewal guide before you start a new application.

The Core Difference: One Clear Explanation

SAM.gov (opens in a new tab) is the federal government's official database of organizations registered to receive federal funding or contracts. Before many agencies can pay your organization or process a grant award, your organization has to exist in SAM.gov (opens in a new tab) as a verified entity. SAM.gov (opens in a new tab) validates who you are: your legal name, your tax ID, your banking information, your organizational type. Think of it as your organization's federal ID file.

Grants.gov (opens in a new tab) is the federal government's central application portal. It hosts funding opportunities from federal agencies and lets applicants create workspaces and submit packages. Grants.gov (opens in a new tab) doesn't store your organizational identity; it looks up your identity in SAM.gov (opens in a new tab) at submission.

You need both. SAM.gov (opens in a new tab) registration is a hard prerequisite for submitting through Grants.gov (opens in a new tab). If your SAM.gov (opens in a new tab) registration isn't active at the exact moment you submit your application, Grants.gov (opens in a new tab) rejects the submission automatically. No appeals, no exceptions, no grace period.

---

SAM.gov in Detail

SAM.gov (opens in a new tab) is usually the slowest step for first-time applicants. Grants.gov tells organizations to allow up to 10 business days for SAM registration to become active, and longer if information can't be verified. For example, an organization that starts SAM.gov registration 10 days before a deadline could miss it entirely if one validation step stalls.

Who Manages It

SAM.gov (opens in a new tab) is managed by the General Services Administration (GSA (opens in a new tab)), specifically through GSA's Integrated Award Environment (IAE). The IAE manages several interconnected federal award systems, and SAM.gov (opens in a new tab) is the central one.

What It Does

SAM.gov (opens in a new tab) does several things that are easy to miss if you're only thinking about grant applications:

• Validates your organization's legal identity against IRS records
• Assigns your Unique Entity Identifier (UEI) - the 12-character code that replaced DUNS numbers in April 2022
• Stores your banking information (EFT details) for federal payments
• Records your NAICS codes (what type of work your organization does)
• Stores your Representations and Certifications (legal compliance statements)
• Tracks your organizational certifications (small business status, socioeconomic categories, etc.)
• Manages your entity's active/expired/inactive status
• Records any suspension or debarment actions against your organization

Who Registers

Any organization that wants to receive federal financial assistance, whether grants, cooperative agreements, or contracts, must register on SAM.gov (opens in a new tab). This includes nonprofits, for-profit companies, state and local governments, universities, and tribal governments. Individuals applying for personal fellowships or individual grants are often exempt, but check the specific opportunity's requirements.

What It Produces

A successful SAM.gov (opens in a new tab) registration produces two things: an Active entity registration and a UEI number. Both are required before you can submit through Grants.gov (opens in a new tab).

How Long It Takes

According to Grants.gov applicant registration (opens in a new tab), you should allow up to 10 business days for a new SAM registration to become active, and it could take weeks or months if information isn't available or verified, including the IRS validation step. Your EBiz POC (Electronic Business Point of Contact) must confirm their role before the registration can activate, which adds time if they're slow to respond.

For more detail on the full SAM.gov (opens in a new tab) registration process, see our guide on SAM.gov registration.

Must Be Renewed Every 365 Days

SAM.gov (opens in a new tab) registrations must be renewed every 365 days to remain active. You must renew annually. SAM.gov (opens in a new tab) sends reminders, but the renewal doesn't happen automatically. A lapsed registration means you can't draw down payments on active grants and new applications may be rejected. See our guide on how to renew your SAM.gov registration for the full renewal process.

---

Grants.gov in Detail

Who Manages It

Grants.gov (opens in a new tab) is managed by the Department of Health and Human Services (HHS) on behalf of all federal grant-making agencies. While HHS runs the infrastructure, the grant opportunities hosted on Grants.gov (opens in a new tab) come from 26 different federal agencies.

What It Does

Grants.gov (opens in a new tab) serves as the central point for:

• Posting funding opportunities (Notices of Funding Availability and Funding Opportunity Announcements) from federal agencies
• Providing application packages (the forms and attachments required for each opportunity)
• Receiving submitted applications and routing them to the appropriate agency systems
• Tracking submission status and notifying applicants of errors or acceptance

Grants.gov (opens in a new tab) doesn't make funding decisions. It's the submission infrastructure. The actual review, scoring, and funding decisions happen within each agency's internal systems after Grants.gov (opens in a new tab) routes the application.

Who Registers

Anyone submitting a grant application on behalf of an organization needs a Grants.gov (opens in a new tab) account. But a Grants.gov (opens in a new tab) account alone isn't enough - submitters must also be set up as Authorized Organization Representatives (AORs) in Grants.gov (opens in a new tab). According to Grants.gov workspace roles (opens in a new tab), any user with the Expanded AOR role can assign roles, and since January 21, 2023 EBiz POCs are automatically given the Expanded AOR role. So your SAM.gov (opens in a new tab) EBiz POC is usually the first person who can grant AOR status, but not the only one.

What It Requires

To submit through Grants.gov (opens in a new tab), you need:

• A Login.gov (opens in a new tab) credential linked to Grants.gov (opens in a new tab)
• An active SAM.gov (opens in a new tab) registration for your organization
• AOR status granted by your EBiz POC or another Expanded AOR in Grants.gov (opens in a new tab)

How Many Opportunities

At any given time, Grants.gov (opens in a new tab) hosts a changing set of open, forecasted, posted, and closed funding opportunities. You can search by agency, category, Assistance Listing number, eligibility, and closing date.

---

The Dependency: What Nobody Explains Clearly

The relationship between SAM.gov (opens in a new tab) and Grants.gov (opens in a new tab) is more tightly connected than most people realize before they run into a problem. Here's how the dependency works in practice:

Your SAM.gov (opens in a new tab) Registration Must Be Active at Submission Time

This isn't just "you needed to register at some point in the past." Grants.gov (opens in a new tab) checks your SAM.gov (opens in a new tab) status at the moment you click submit. If your registration was active last week but expired three days ago, your submission is rejected today. If you're managing active grants and your SAM.gov (opens in a new tab) lapses mid-project, you can't draw down payments even on grants that were awarded years earlier.

There Can Be a Delay After SAM.gov (opens in a new tab) Activates

When SAM.gov (opens in a new tab) shows "Active," your UEI isn't immediately visible to Grants.gov (opens in a new tab). The two systems sync periodically, not in real time. If you try to submit through Grants.gov (opens in a new tab) the same day your SAM.gov (opens in a new tab) registration goes Active, Grants.gov (opens in a new tab) may show an "entity not found" error. Wait one full business day after SAM.gov (opens in a new tab) shows Active before attempting a Grants.gov (opens in a new tab) submission.

Your EBiz POC Controls Both Systems

This is the connection that catches most organizations off guard. The EBiz POC you designate in SAM.gov (opens in a new tab) during registration manages the registration there, and in Grants.gov (opens in a new tab) the EBiz POC is automatically given the Expanded AOR role, which can grant AOR status to each person who will submit applications. Any other user with the Expanded AOR role can approve submitters too, and the role stays assigned even if that user is no longer the EBiz POC.

If your EBiz POC is unavailable - out of the office, left the organization, or simply unresponsive - you can get stuck at both points simultaneously unless someone else holds Expanded AOR. Give a second trusted person the Expanded AOR role in Grants.gov well before any deadline, and designate a backup contact in SAM.gov (opens in a new tab). Make sure both people understand their roles.

---

The Broader Federal Grants Ecosystem

SAM.gov (opens in a new tab) and Grants.gov (opens in a new tab) are the two systems most organizations interact with first, but they're part of a larger ecosystem. Here's a brief map of the other systems you might encounter:

Login.gov (opens in a new tab)

Login.gov (opens in a new tab) is the federal government's single sign-on credential system. Both SAM.gov (opens in a new tab) and Grants.gov (opens in a new tab) now use Login.gov (opens in a new tab) for authentication. One Login.gov (opens in a new tab) account can be linked to both systems, though each system still maintains its own user profiles and role settings.

eRA Commons

If you're applying for NIH-funded research grants, you'll also need eRA Commons, NIH's system for researcher registration, application tracking, and award management. According to NIH's submission guidance (opens in a new tab), applications are still submitted through Grants.gov (opens in a new tab), whether you use ASSIST (NIH's online application tool), Grants.gov Workspace, or a system-to-system solution. That means an R01, R21, or K application needs active SAM.gov, Grants.gov, and eRA Commons registrations. Always read the specific NOFO for other requirements.

NSF Research.gov (opens in a new tab)

The National Science Foundation has its own submission portal at Research.gov (opens in a new tab). NSF proposals don't go through Grants.gov (opens in a new tab). If you're applying for NSF funding, you'll register on Research.gov (opens in a new tab) and submit there.

USASpending.gov (opens in a new tab)

USASpending.gov (opens in a new tab) is the public database of all federal spending, including grants and contracts. You don't apply here - but it's extremely useful for research. You can search by organization name or UEI to see what funding a potential collaborator or competitor has received. You can look at past awards in a program to understand typical award sizes. All federal award data is public.

Federal Payment Systems

Once you receive an award, you'll draw down payments through a payment system. Which one depends on the awarding agency. HHS awards typically use the Payment Management System (PMS). USDA uses G5. Other agencies use their own systems. All of these payment systems check your SAM.gov (opens in a new tab) registration before releasing funds - which is why a lapsed SAM.gov (opens in a new tab) creates an immediate cash flow problem for organizations running active grant-funded programs.

That registration link also connects directly to the rest of your post-award workflow. If your team is building out the full federal operations stack, read what happens after you submit a federal grant, federal grant audit preparation, grant reporting requirements by agency, single audit federal grants, time and effort reporting for grants, and our indirect cost rate negotiation guide. Those topics sit downstream from SAM and Grants.gov, but they often determine whether an award remains manageable after it lands.

---

What Happens When SAM.gov (opens in a new tab) Expires

This is worth spending extra time on because the consequences extend far beyond just "you can't apply for new grants."

When your SAM.gov (opens in a new tab) registration lapses:

• New grant applications submitted through Grants.gov (opens in a new tab) are automatically rejected
• Your organization becomes ineligible to receive federal funding payments
• Payment systems block drawdowns on all active grants - even grants awarded years ago that have nothing to do with the lapsed registration

Your active grants don't automatically terminate because of a SAM.gov (opens in a new tab) lapse. The federal agency won't cancel your award just because your registration expired. But you can't touch the money. For organizations that rely on regular drawdowns to cover payroll and operating costs, even a 2-week lapse can create a genuine financial crisis.

The fix is straightforward: complete the annual renewal before your registration expires. Start 60 days early. The renewal typically takes 3 to 7 business days, but can take longer if the IRS validation step hits a snag. See our complete guide on how to renew your [SAM.gov (opens in a new tab) registration](/blog/how-to-renew-sam-gov-registration).

---

Side-by-Side Comparison

Related Guides

• Federal Grant Management Systems
• Grants.gov Vs Sam.gov

---

What Federal Registration Helpdesks Doesn't Tell You

SAM.gov (opens in a new tab) validation delays cascade into Grants.gov (opens in a new tab) submission failures. If your SAM.gov (opens in a new tab) registration shows "submitted" rather than "active," Grants.gov (opens in a new tab) will reject your application at the door. Start SAM.gov (opens in a new tab) registration at least 6 weeks before any Grants.gov (opens in a new tab) deadline.

Grants.gov (opens in a new tab) workspace permissions cause more missed deadlines than technical errors. The person who created the workspace must explicitly authorize others to submit. Organizations where one person handles registration and another handles submission regularly discover this permission gap 2 hours before a deadline.

SAM.gov (opens in a new tab) entity registration and Grants.gov (opens in a new tab) applicant profiles use different login systems. Having a Login.gov (opens in a new tab) account connected to SAM.gov (opens in a new tab) doesn't automatically connect to Grants.gov (opens in a new tab). You need to link your profile in both systems separately.

Related Guides

• Federal Grants for Nonprofits
• How to Write a Grant Budget

Sources

• SAM.gov entity registration (opens in a new tab)
• Grants.gov applicant registration (opens in a new tab)
• Grants.gov workspace roles (opens in a new tab)
• Grants.gov application status (opens in a new tab)
• USASpending.gov (opens in a new tab)
• Login.gov (opens in a new tab)
• Federal Service Desk (FSD.gov) (opens in a new tab)
• SAM.gov Help and FAQ (opens in a new tab)

---

FAQ: Common Questions

Do I need to register on both SAM.gov (opens in a new tab) and Grants.gov (opens in a new tab)?

Yes - but they serve completely different purposes. You register on SAM.gov (opens in a new tab) to establish your organization's identity in the federal system and receive your UEI number. You register on Grants.gov (opens in a new tab) (and get AOR status there) so you can submit applications. You can't submit through Grants.gov (opens in a new tab) without an active SAM.gov (opens in a new tab) registration, and having a SAM.gov (opens in a new tab) registration alone won't let you submit applications - you also need a Grants.gov (opens in a new tab) account with AOR status.

How long does it take for SAM.gov (opens in a new tab) registration to show up in Grants.gov (opens in a new tab)?

After your SAM.gov (opens in a new tab) registration reaches "Active" status, it may not show up in Grants.gov (opens in a new tab) immediately. If you try to submit on the same day your SAM.gov (opens in a new tab) activates, Grants.gov (opens in a new tab) may not recognize your entity yet. Wait one full business day after seeing Active status in SAM.gov (opens in a new tab) before attempting your first Grants.gov (opens in a new tab) submission.

What is the EBiz POC and why does it matter in both systems?

The Electronic Business Point of Contact (EBiz POC) is the person your organization designates in SAM.gov (opens in a new tab) to manage your entity registration. In SAM.gov (opens in a new tab), they're responsible for the annual renewal and any updates to the registration. In Grants.gov (opens in a new tab), the EBiz POC is automatically given the Expanded AOR role, so they can grant AOR (Authorized Organization Representative) status to submitters. Any other Expanded AOR can do that too. Since the EBiz POC is a SAM.gov (opens in a new tab)-designated role that carries authority into Grants.gov (opens in a new tab), this person plays a big part in both maintaining your federal identity and submitting grant applications. Choose someone reliable who understands the responsibilities.

Can I apply for NIH grants through Grants.gov (opens in a new tab)?

Yes. NIH applications, including R01, R21, R03, K-series, and F-series, are submitted through Grants.gov (opens in a new tab), whether you prepare them in ASSIST, Grants.gov Workspace, or a system-to-system solution. ASSIST is NIH's front end, and it submits through Grants.gov. Your organization needs active SAM.gov, Grants.gov, and eRA Commons registrations, and the person submitting needs AOR status. Read each NOFO for other requirements.

What happens to my active grants if my SAM.gov (opens in a new tab) registration expires?

Your active grant awards don't automatically terminate, but you lose access to the money. Federal payment systems check SAM.gov (opens in a new tab) status before releasing funds, so all payment drawdowns on active grants are blocked until your registration is reinstated. The solution is renewing as quickly as possible - but the best solution is not letting it lapse in the first place by starting the renewal 60 days before your expiration date.