NSF grants move through three distinct stages: expert merit review, a formal funding decision, and post-award administration. A favorable review or program officer recommendation is not an award. After an award is made, recipients may manage allowable spending within its terms, but changes to the project’s scope, people, time, or funding may require notification or prior NSF approval.
How NSF reviews proposals
NSF first assigns a proposal to an appropriate program and checks whether it meets submission requirements. A compliant proposal is reviewed by an NSF scientist, engineer, or educator serving as program officer and usually by three to ten external reviewers, as ad hoc reviewers, panelists, or both. Program officers may also seek comments through site visits, and senior NSF staff further review award recommendations. The reviewer count describes NSF’s process; it is not a guarantee that every proposal receives the same review format. NSF’s proposal-processing and review guidance describes the process.
The two core merit criteria
- Intellectual Merit: the potential to advance knowledge.
- Broader Impacts: the potential to benefit society and contribute to desired societal outcomes.
Both criteria receive full consideration; neither one alone is sufficient. Reviewers also consider an activity’s potential, its creativity or transformative quality, the quality of its assessment plan, the qualifications of the team, and the resources available. A particular program may add criteria.
Who makes the NSF funding decision?
After scientific, technical, and programmatic consideration, the program officer recommends that the proposal be declined or awarded to the relevant Division Director. Programmatic approval normally occurs at the Division or Office level. A proposal recommended for an award then receives business, financial, and policy review, including a risk-based pre-award assessment. A Grants and Agreements Officer makes the final decision to fund or decline.
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NSF says the Division of Grants and Agreements generally makes this decision within 30 days after the program division’s recommendation; special or complex proposals can take longer. The recommendation is not an approval or obligation of federal funds: “a recommendation for an award by an NSF Program Officer does not constitute approval or obligation of Federal funds.” NSF PAPPG 24-1, Chapter III.
What governs spending after an award?
An award is more than its total dollar amount. Its governing framework includes the award notice and amendments, federal award information, the budget by expense category, applicable NSF conditions, the referenced proposal, and program or other requirements incorporated by reference. The recipient’s authority to spend is bounded by that framework. NSF’s award guidance describes the award, while NSF’s budget-review guidance explains that proposed costs are reviewed for reasonableness, allowability, and allocability. NSF may examine selected budgets more deeply, and its grant specialists make the final determination on the overall award size and specific amounts in the final budget.
Can you reallocate funds in an NSF grant?
Often, recipients can administer allowable costs without asking NSF to approve every accounting change. That is not blanket permission to change the project. Organizational reviews must document that spending is allowable, necessary, reasonable, consistent with award conditions and policy, and effective in its use of resources—and that it does not change the project’s objectives or scope. If a proposed change affects scope or methods, NSF directs the recipient to raise it with the authorized organizational representative (AOR) before acting. The AOR submits relevant requests or notifications through NSF systems. See Chapter VII on award administration and NSF’s award-change guidance.
Use the change itself—not the word “reallocation”—to determine the next step. Requirements can depend on the award’s terms and applicable policy supplement.
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|---|---|---|
| Allocation of costs within the approved project | Check allowability, necessity, reasonableness, allocability, award conditions, and whether objectives or scope remain unchanged. Follow organizational review and documentation procedures. | Routine cost administration does not authorize a scope or objective change. |
| Project scope or methods | Raise the proposed change with the AOR before acting; the AOR submits any required request or notification through NSF systems. | Do not treat a budget adjustment as permission to change the work. |
| PI, co-PI, or committed effort | Follow the separate request requirements that apply to these personnel changes. | The applicable approval or notification route depends on the specific change and award. |
| Subaward or transfer to another organization | Generally obtain NSF authorization in advance. | NSF identifies an exception for purchases of commercially available materials, supplies, equipment, or general support services allowable under the award. |
NSF’s change-request guidance and award-administration rules set out the relevant procedures. Where the general rule does not settle a specific case, check the award notice and conditions and have the AOR confirm the applicable route before committing funds.
How extensions and additional funding differ
A no-cost extension adds time to the project period without adding funding. NSF says a recipient may authorize one extension of up to 12 months when more time is needed to complete the original scope using funds already available and the applicable conditions are met. The recipient must notify NSF using the prescribed method and within the prescribed timeframe. A further extension may be approved by NSF in exceptional circumstances; simply having funds left is not enough.
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Supplemental funding is a separate request for additional money. NSF describes it as rare, intended to support completion of the original scope, and due at least two months before the award ends. Check NSF’s award-change instructions and the award’s terms for the required method and conditions.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How recipients and NSF monitor an award
Recipients conduct the project and monitor performance against its goals, schedule, award terms, and other requirements. As NSF states, “The recipient has full responsibility for the conduct of the project or activity supported under an NSF award and for the results achieved.” NSF encourages communication between program officers and PIs and may conduct site visits. Chapter VII covers recipient responsibilities and NSF oversight.
Reports and administrative consequences
Annual project reports are submitted in Research.gov for review by the cognizant program officer. Late reports can delay additional funding and administrative actions, including extensions and funding increments. Final reports and public outcomes reports have their own submission requirements and deadlines; check the award type and applicable supplement rather than assuming a single deadline applies to every award.
When NSF can change or end an award
If review and consultation indicate a need for programmatic stewardship, NSF may require a PI or co-PI to be substituted or removed, reduce award funding, or suspend or terminate the award when less restrictive options are unavailable or inadequate. These are authorities exercised under governing award rules and circumstances, not automatic penalties for a disappointing result.
Which policy version applies?
NSF’s policy landing page lists PAPPG 24-1 for proposals submitted or due on or after May 20, 2024. It also lists Supplement 1 for financial assistance awarded on or after December 8, 2025, and Supplement 2 for assistance awarded on or after January 22, 2026. NSF says supplements implement changes to the guide; Supplement 2 states that it takes precedence over inconsistent PAPPG 24-1 provisions for assistance to which it applies. Check the relevant dates and the award-specific terms before applying a general rule to a particular grant. NSF’s PAPPG page lists the guide and supplements, and the Supplement 2 notice states its precedence rule.
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