NIH R03 Small Grant Program
A small, short-term NIH grant for discrete, well-defined projects that can be completed with limited resources.
Official program page- Sponsor
- National Institutes of Health
- Mechanism
- R03
- Typical award
- Up to 2 years, with direct costs generally limited to $50K per year. Not renewable.
- Deadlines
- Three standard cycles a year: generally Feb 16, Jun 16, and Oct 16 for new applications.
What it funds
- Pilot or feasibility studies
- Secondary analysis of existing data
- Small, self-contained research projects
- Development of new research technology
Who can apply
Independent investigators at eligible institutions. Not all NIH institutes use the R03, so check the relevant funding opportunity.
Best for
A small, clearly bounded project, or making use of an existing dataset or resource.
Figures and deadlines change year to year: always confirm current details on the official program page before applying.
Deadlines
NIH uses three standard cycles a year. Applications are due by 5:00 PM local time of the applicant organization, and NIH no longer has separate AIDS-related due dates.
| Application type | Cycle 1 | Cycle 2 | Cycle 3 |
|---|---|---|---|
| New | February 16 | June 16 | October 16 |
| Renewal, resubmission, revision | March 16 | July 16 | November 16 |
Some funding opportunities set their own dates. Always check the specific notice of funding opportunity.
Budget limits
- Up to two years of support.
- Direct costs generally limited to $50,000 per year.
- Not renewable.
- Not every institute participates. Check the specific funding opportunity.
R03 vs. R21
| R03 | R21 | |
|---|---|---|
| Best for | Small, self-contained projects and secondary data analysis | Exploratory, high-risk ideas |
| Budget | Up to $50,000 direct per year | Up to $275,000 direct over 2 years |
| Length | Up to 2 years | Up to 2 years |
| Due dates | Same R-series cycle | Same R-series cycle |
Frequently asked questions
How much is an NIH R03 grant?
Direct costs are generally limited to $50,000 per year for up to two years, plus F&A.
When is the R03 deadline?
New applications are due February 16, June 16, and October 16; resubmissions March 16, July 16, and November 16.
Can an R03 be renewed?
No. R03 awards are not renewable.
Related programs
All NIH opportunitiesA shorter NIH grant for exploratory, high-risk/high-reward work that doesn't yet have extensive preliminary data.
NIH's flagship, investigator-initiated grant for a discrete, mature research project.
An NIH fellowship that supports promising PhD students through their dissertation research and training.
Managing a NIH R03 proposal?
GrantsManager tracks the deadline, budget, and submission from first draft to award.