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NSF grants are awarded after merit review and separate programmatic, business, financial, and policy checks. A program officer may recommend funding, but only an authorized NSF Grants and Agreements Officer makes the final funding decision. Once an award is issued, its notice, approved budget, proposal, conditions, and incorporated requirements govern spending. Recipients manage the project, but changes to its scope, people, timing, or funding can require NSF notification or prior approval.
How NSF evaluates and selects proposals
Merit review
NSF assigns a proposal to an appropriate program and checks it for compliance. A compliant proposal is reviewed by an NSF scientist, engineer, or educator serving as a 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. These are process details, not a guarantee of a particular review format for every proposal. NSF’s Chapter III review process
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Reviewers consider two National Science Board-approved criteria: Intellectual Merit, or the potential to advance knowledge, and Broader Impacts, or the potential to benefit society and contribute to desired societal outcomes. Both receive full consideration; neither alone is sufficient. Reviewers also consider the activity’s potential, creativity or transformative quality, the quality and assessment plan, team qualifications, and available resources. A program may apply additional criteria.
From recommendation to official decision
After scientific, technical, and programmatic consideration, the program officer recommends an award or decline to the relevant Division Director. Programmatic approval is normally at the Division or Office level. A recommended 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. NSF says the Division of Grants and Agreements generally makes that decision within 30 days after the program division’s recommendation, though special or complex proposals can take longer.
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A favorable review or program officer recommendation is not an award and does not obligate federal funds. NSF’s guide states: “a recommendation for an award by an NSF Program Officer does not constitute approval or obligation of Federal funds.” The official decision is made through NSF’s award process. NSF PAPPG 24-1, Chapter III
What rules govern spending after an award?
An NSF award is more than its total dollar amount. Its governing framework includes the award notice and any amendments, federal award information, the budget by expense category, applicable NSF conditions, the referenced proposal, and program or other requirements incorporated by reference. The approved budget and those terms—not simply the total award—define the recipient’s authority to spend. NSF PAPPG 24-1, Chapter VI
NSF reviews proposed budgets for reasonableness, allowability, and allocability, and may examine selected budgets more deeply. NSF grant specialists make the final determination about the overall award amount and specific amounts in the final award budget. NSF’s overview of proposal budget reviews
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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteFor recipients, “reallocation” should not be treated as blanket permission to move money or change the project. The organization is responsible for reviewing costs and documenting its decisions. Costs must be allowable, necessary, reasonable, consistent with award conditions and policy, and effective in their use of resources. Spending also must not amount to an unapproved change in the project’s objectives or scope. NSF PAPPG 24-1, Chapter VII
What kind of change are you making?
The route depends on what changes. Before acting on a potential scope or methods change, recipients should raise it with their authorized organizational representative (AOR). The AOR submits relevant requests or notifications through NSF systems. The award’s terms and applicable policy determine the specific process. NSF’s award-change guidance
| Change | What the recipient should know | Route or timing established by NSF |
|---|---|---|
| Allocating allowable costs within the project | The recipient remains responsible for documenting organizational review and ensuring costs comply with the award. This does not authorize a change to objectives or scope. | Follow the approved budget, award conditions, and applicable policy; no universal reallocation threshold is stated in the cited guidance. Chapter VII |
| Changing project objectives, scope, or methods | Do not assume a budget adjustment covers a substantive project change. | Raise the proposed change with the AOR before acting; the AOR submits the relevant request or notification through NSF systems. NSF award-change guidance |
| Changing the PI, co-PI, or committed effort | Personnel and committed-effort changes have separate request requirements. | Use the applicable NSF request route and award terms; specific requirements depend on the change and award. Chapter VII |
| Subawarding or transferring part of an award to another organization | Generally, this requires prior NSF authorization. NSF identifies an exception for purchases of commercially available materials, supplies, equipment, or general support services allowable under the award. | Obtain prior authorization where required before making the transfer. Chapter VII |
| Extending the project period without more funds | A no-cost extension adds time, not funding. A recipient may authorize a single extension of up to 12 months when more time is needed to complete the original scope with funds already available and the applicable conditions are met. | Notify NSF in the prescribed manner and timeframe. Further extensions require NSF approval under exceptional circumstances; remaining funds alone are not sufficient justification. NSF extension guidance |
| Requesting additional funds | A supplemental-funding request is distinct from a no-cost extension. NSF describes supplemental funding as rare and intended to support completion of the original scope. | Submit at least two months before the award ends. NSF supplemental-funding guidance |
Who administers the award and reports on progress?
The recipient conducts the project and monitors performance against goals, schedules, award terms, and other requirements. NSF encourages communication between program officers and principal investigators and may conduct site visits. As NSF puts it, “The recipient has full responsibility for the conduct of the project or activity supported under an NSF award and for the results achieved.” NSF PAPPG 24-1, Chapter VII
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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 requirements and deadlines; check the specific award and applicable policy rather than applying one deadline to every award. Chapter VII
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Yes. When NSF’s review and consultation indicate a need to assert programmatic stewardship, NSF may require a PI or co-PI to be substituted or removed, reduce award funding, or suspend or terminate an award if less restrictive options are unavailable or inadequate. These are authorities exercised under the governing award rules and circumstances, not automatic penalties for a disappointing result. NSF PAPPG 24-1, Chapter VII
Which NSF policy version applies?
NSF’s policy 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 applicable assistance. Check the relevant dates and the award’s own terms before relying on a general rule for a specific grant. NSF PAPPG landing page; Supplement 2 policy notice
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