Mathematical Sciences Postdoctoral Research Fellowships (MSPRF)
U.S. National Science Foundation · Opportunity number 23-603
Details summarized from the official notice as of Oct 15, 2026. Always confirm eligibility, deadlines and requirements in the official notice before applying.
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Key facts
| Opportunity number | 23-603 |
|---|---|
| Agency | U.S. National Science Foundation |
| Assistance listing (ALN, formerly CFDA) | 47.049 |
| Posted | Jul 14, 2023 |
| Deadline | Oct 21, 2026 |
| Award floor | $190,000 |
| Expected number of awards | 45 |
| Estimated total program funding | $8,500,000 |
| Cost sharing or matching required | No |
| Funding type | Grant |
| Category | Science technology and other research and development |
| Last updated here | Oct 15, 2026 |
Summary from the notice
Who can apply
The official notice lists these applicant types as eligible:
- Others named in the notice (see the eligibility text)
Not listed as eligible
- Small businesses
- Nonprofits
- Colleges and universities
- State governments
- Local governments
- Tribal governments and organizations
- Larger for-profit companies
- Individuals
Unless the eligibility text in the notice names you, this opportunity is probably not for you.
Eligibility details from the notice
*Who May Submit Proposals: Proposals may only be submitted by the following: - The Mathematical Sciences Postdoctoral Research Fellowships are awards to individuals, and proposals are submitted directly by the fellowship proposer to NSF. Fellows must affiliate with institutions or organizations(e.g., Institutions of Higher Education (IHEs), government and national laboratories and facilities,privately sponsored nonprofit institutes and museums, and for-profit organizations under certain conditions). *Who May Serve as PI: An individual is eligible to submit a proposal to this program if all the following criteria are met: Must, at the time of submission, be a U.S. citizen, U.S. national, or a legally admitted permanent resident alien of the United States; May not have held the doctoral degree more than 2 years as of January 1 of the year of the award; Must propose research inan area of mathematics or statistics; May not have previously been a principal investigator or co-principal investigator of an NSF award (other than a graduate research fellowship or an award in support of a conference or workshop); May not submit a research plan duplicated in another NSF proposal; Must not have previously been offered an award by the MSPRF program; and Must have a doctoral degree conferred before the postdoctoral appointment start date. Proposals that fail to meet the above eligibility requirements will be returned without review. By signing and submitting the proposal, the fel...
Registrations you will likely need
Most applications submitted through Grants.gov need the following. Registration can take several weeks, so start early. The notice lists the exact requirements.
- SAM.gov registration for your organization, which also gives you a Unique Entity ID (UEI). Registration is free.
- A Login.gov account, which Grants.gov uses for sign-in.
- A Grants.gov applicant registration linked to your organization's UEI.
Past awards for this program
Totals for assistance listing 47.049 from public USASpending.gov data, as of Sep 23, 2026. Past awards do not predict future funding.
| Year | Listing | Awards | Total | Average |
|---|---|---|---|---|
| 2026 | 47.049 | 16 | $1,790,278,386 | $111,892,399 |
| 2025 | 47.049 | 21 | $1,947,852,199 | $92,754,867 |
| 2024 | 47.049 | 22 | $1,981,475,770 | $90,067,080 |
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