NIH Exploratory/Developmental Research Grant (R21): eligibility, deadline, and how to apply (2026)
Key Facts
- Agency
- National Institutes of Health (NIH)
- Award Range
- up to $275,000
- Deadline
- February 16, June 16, October 16 (Annual Cycles)
- Time Remaining
- Next due date: February 16, 2027.
- CFDA Number
- 93.113
The NIH Exploratory/Developmental Research Grant (R21) is a federal funding opportunity administered by the National Institutes of Health (NIH). This guide covers everything you need to know to determine whether you qualify and how to submit a competitive application before the February 16, 2027 due date.
Use our free Grant Finder to discover additional programs you may be eligible for based on your organization type and location.
Eligibility requirements
To qualify for the NIH Exploratory/Developmental Research Grant (R21), applicants must meet the following criteria:
Universities, colleges, hospitals, nonprofits, for-profit organizations, and government entities. Open to domestic and foreign institutions with qualified principal investigators.
Eligibility requirements can change between funding cycles. Always verify the current criteria on the official program page before beginning your application.
Businesses can apply. grants.gov lists for-profit or small business applicants on this program's parent notice (PA-25-304); the notice's other requirements still apply. Not sure your business fits? Run the free Grant Finder check →
How to apply: step by step
- Register on SAM.gov. Every federal grant applicant needs an active SAM (System for Award Management) registration. Allow 2-4 weeks for new registrations to process. Existing registrations must be renewed annually.
- Get a UEI number. Your Unique Entity Identifier is assigned through SAM.gov and replaces the old DUNS number. You will need this on every federal application.
- Review the Notice of Funding Opportunity (NOFO). Download the full NOFO from the program page. Pay close attention to review criteria, budget limits, and required attachments.
- Prepare your application package. Most federal grants require a project narrative, budget justification, organizational capacity statement, and supporting documents. Follow the page limits and formatting rules exactly.
- Submit through the system the NOFO names. Some agencies use Grants.gov and others use their own portal. Submit before the February 16, 2027 due date; late applications are usually rejected.
- Confirm receipt. Keep the tracking number or confirmation email, and check back in 1-2 business days that your application passed the validation checks.
For detailed guidance on writing a winning narrative, see our grant writing tips article.
Grant details
| Detail | Information |
|---|---|
| Grant Name | NIH Exploratory/Developmental Research Grant (R21) |
| Funding Agency | National Institutes of Health (NIH) |
| CFDA Number | 93.113 |
| Award Minimum | Not published |
| Award Maximum | $275,000 |
| Deadline | February 16, June 16, October 16 (Annual Cycles) |
| Category | Research |
| Matching Required | No matching funds required |
| Application Link | Official program page |
Federal grant budgets and priorities shift each fiscal year. The amounts listed above reflect the most recent funding cycle. For the latest figures, check the official program page.
If you are exploring business financing beyond grants, the team at CeoCult covers loans, lines of credit, and alternative funding for founders.
Check your fit for Research grants like this one before you apply: eligibility, match and registration in one worksheet.
Frequently asked questions
Who is eligible for the NIH Exploratory/Developmental Research Grant (R21)?
Universities, colleges, hospitals, nonprofits, for-profit organizations, and government entities. Open to domestic and foreign institutions with qualified principal investigators. Requirements can change between cycles, so always verify on the official program page before applying.
Can a for-profit business apply for the NIH Exploratory/Developmental Research Grant (R21)?
Yes. grants.gov lists for-profit or small business applicants on this program's parent notice (PA-25-304). The notice's other eligibility requirements still apply, so confirm them on the official listing.
What is the deadline for NIH Exploratory/Developmental Research Grant (R21)?
The current deadline is one of the fixed dates each year (February 16, June 16, October 16); the next is February 16, 2027. Many federal grants operate on annual or rolling cycles. If this deadline has passed, check the program page for the next funding opportunity.
Does NIH Exploratory/Developmental Research Grant (R21) require matching funds?
No matching funds required. Matching requirements can vary by fiscal year and applicant type, so confirm with the funding agency before committing resources.