Guide to GRFP eligibility for 2026–27
NSF GRFP Eligibility 2026–27: Who Can Apply and Which Research Counts
Who can apply and how many times, which degree programs and research NSF excludes, the 10 fields, and what the award is worth, quoted from NSF's own rules.
You can apply for the NSF GRFP in 2026–27 if you are a U.S. citizen, national or permanent resident and you are a college senior, a bachelor's graduate who has never enrolled in a graduate degree program, or a first-year graduate student in your first graduate program. Second-year graduate students are not eligible. You need a research-based master's or PhD with a thesis in one of NSF's 10 fields, and research outside its excluded areas (NSF 26-526).
The rules tightened over the last two cycles, so a lot of older advice is wrong. Below are NSF's rules quoted word for word, the programs and research it excludes, the fields, what changed, and what the fellowship is worth.
Who can apply for the GRFP, and how many times
Who can apply in 2026–27, in NSF's words
| You are | Can you apply? | NSF's rule |
|---|---|---|
| A college senior, or a bachelor's graduate never enrolled in a graduate degree program | Yes, any number of times | Can "apply unlimited times before enrolling in a graduate degree program." |
| In a joint bachelor's–master's program | Yes, once | "Can apply only once in the final undergraduate OR first graduate year of the joint program." |
| A first-year graduate student in your first graduate program | Yes, once | Must have "less than one academic year completed", judged by your registrar-issued transcript at the deadline. |
| A second-year graduate student | No | "Second-year graduate students are not eligible to apply." |
| In a PhD program after earning a master's degree | No | NSF's FAQ: "If you have a master's degree, you are not eligible." |
| Someone who already accepted a GRFP, or an NSF employee | No | Applicants must have "never previously accepted a Graduate Research Fellowship" and must "not be a current NSF employee." |
Quotes from NSF 26-526, section IV, and the applicant FAQ.
- Citizenship. You must be a U.S. citizen, national or permanent resident ("green card" holder) "by the application deadline", and again when you accept (NSF 26-526).
- Summer research counts. Summer research that is part of your graduate program, such as research credits, counts toward your first year. Graduate courses taken without being enrolled in a graduate degree program do not.
- One application a year. "An eligible applicant may submit only one application per annual competition" (NSF 26-526).
- Where you'll study. Fellows must enroll full-time at an accredited U.S. nonprofit school that offers advanced STEM degrees, starting by the fall after the award.
If you're a senior, think about when to apply
Seniors and graduates can apply as often as they like before starting graduate school, but once you enroll you get exactly one try, in your first year. A strong senior application keeps that later chance in reserve.
Eligible and ineligible degree programs
NSF funds "only eligible research-based master's and doctoral degrees in STEM that include a thesis." Professional programs and mostly course-based programs without a thesis are out (NSF 26-526).
Degree programs NSF lists as ineligible
| Ineligible program | Note |
|---|---|
| Business Administration (MBA), Law, Medicine, Pharmacy, Veterinary Medicine, Dentistry | Professional degrees |
| Public Health, Social Work | Also listed as ineligible areas of study, with global health |
| Clinical Psychology, Counseling Psychology | Clinical psychology was dropped for 2025–26; counseling psychology is named for 2026–27 |
| Practice-oriented, clinical, counseling or patient-oriented programs with professional training | Covers programs not named above |
| Joint or dual professional and science programs, such as MD/PhD and JD/PhD | Also excluded: students in a graduate program while on leave from a professional program |
NSF says the list is "not limited to" these programs (NSF 26-526).
The 10 GRFP fields of study
You pick one Major Field of Study, then a subfield from NSF's list. "Only the Major Fields of Study and the listed subfields are eligible" (NSF 26-526), so if your subfield isn't listed, your topic isn't eligible under that name. Your field also sets your deadline (see the GRFP deadlines guide) and the panel that reviews you.
- Chemistry
- Computer and Information Sciences and Engineering
- Engineering
- Geosciences
- Life Sciences
- Materials Research
- Mathematical Sciences
- Physics and Astronomy
- Psychology
- Social Sciences
STEM Education and Learning Research is gone for 2026–27, along with the education subfields inside other fields. Artificial Intelligence, Quantum Information Science and Computationally Intensive Research now appear as subfields under every one of the 10 fields. NSF says it will "emphasize high priority research areas aligned with Administration priorities" while funding all eligible fields (NSF 26-526), though the appendix doesn't mark which subfields those are.
Research the GRFP won't fund
Even in an eligible field and program, your proposed research can be ruled out. These are the four exclusions in NSF's words (NSF 26-526). To test your own idea against them, paste it into the eligibility checker.
NSF's four exclusions, and what still qualifies
| Area | Not eligible (NSF's words) | Still eligible |
|---|---|---|
| Health and disease | "Research for which the goals are directly human disease- or health-related, including the etiology and diagnosis of and treatment and/or interventions for physical or mental disease or disorder is not eligible for support." Also out: drug development and testing, animal models for testing treatments, and "population-based research including medical intervention trials". | Bioengineering that "primarily advanc[es] engineering knowledge" (choose Engineering, subfield Bioengineering or Biomedical Engineering); fundamental materials research for biomedical use; disease-related goals that advance fundamental knowledge in engineering, math, physical, computer or information sciences |
| Agriculture | "Applied studies focused on maximizing production in agricultural plants or impacts on food safety are not eligible." | "Research focused on basic questions in plant pathology" |
| Policy | "Research with the expressed intent to influence, advocate for, or effect specific policies and outcomes is not eligible." | "Research with implications that inform STEM policy" |
| Conservation and management | "Research on conservation practice or implementation, wildlife and/or natural resource management, planning or decision support (e.g., habitat restoration, species recovery actions, management interventions) is not eligible for support." | Basic ecology and environmental science that doesn't make management or restoration the goal |
The last row's "still eligible" column is our reading; the other exceptions are NSF's. Source: NSF 26-526, section IV.3.
Risky: "I will identify which microbes help corals survive marine heatwaves so restoration projects can choose heat-tolerant corals to plant."
Safer: "I will test how the coral microbiome changes a coral's tolerance to heat, a basic question about host–microbe interactions."
- Why. The first version makes habitat restoration the goal, which NSF excludes. The second asks the same science as a basic question. Only reframe if the basic question is genuinely your research; reviewers read the whole plan. The research proposal writer can help you draft the plan around it.
What happens if you get this wrong
NSF returns applications that are ineligible without review. An application filed under a field that "is not aligned with the proposed research plan and degree program will be deemed ineligible and returned without review" (NSF 26-526).
What changed from older GRFP advice
Rules that changed in the last two cycles
| Rule | Older advice says | 2026–27 rule |
|---|---|---|
| Second-year graduate students | Can apply once in the first or second year | Not eligible (since the 2025–26 cycle) |
| Number of tries | Two: once as an undergraduate, once in grad school | Unlimited before grad school, or one in your first graduate year |
| Prior master's degree | Could apply in a later program | Not eligible |
| STEM Education and Learning | A major field | Removed |
| Clinical and counseling psychology | Eligible | Ineligible |
| Conservation and management research | Often eligible | Ineligible |
| Deadlines | November, 5 p.m. local time | October 19–23, 8 p.m. Eastern |
Compared against NSF 25-547 and NSF 26-526. NSF's FAQ says "changes to eligibility reflect adherence to the original intent of the NSF GRFP and statutory requirements" (applicant FAQ).
What the GRFP pays and your odds
The fellowship, per NSF 26-526
| Item | Amount |
|---|---|
| Stipend | $37,000 a year, for a 12-month tenure |
| Cost of Education allowance | $16,000 a year, paid to your school "in lieu of all tuition and mandatory fees" |
| Years of support | Three, usable over a five-year fellowship period |
| Total | $159,000 ($111,000 stipend plus $48,000 to your school) |
| Awards expected this cycle | About 1,500 |
Source: NSF 26-526, sections II–III.
Last cycle NSF made 2,500 offers from "nearly 14,000 applicants" (NSF news, April 13, 2026), about 18%, and named 1,470 more applicants Honorable Mentions (NSF additional FAQ). This cycle NSF estimates about 1,500 awards. If a similar number apply, that would be roughly 11%, but NSF hasn't published an applicant count and award numbers have shifted from year to year, so treat any acceptance rate as approximate. Odds also vary by field, since each field has its own review panels.