NSF PAPPG (Proposal & Award Policies & Procedures Guide)

The NSF Proposal & Award Policies & Procedures Guide (PAPPG) is the National Science Foundation’s primary, comprehensive statement of the policies and procedures governing how NSF proposals are prepared, submitted, reviewed, and how resulting awards are administered. Specific PAPPG sections, once referenced in an award’s Notice of Award or NSF’s standing Grant General Conditions (GC-1), become part of that award’s binding terms through incorporation by reference. It is NSF’s direct functional analogue to the NIH Grants Policy Statement (NIH GPS) — both are the single agency-published document a research administrator should consult first for that agency’s own administrative rules, rather than a secondary summary.

The PAPPG is published by NSF’s Division of Institution and Award Support and is legally distinct from, but implements, the government-wide Uniform Guidance (2 CFR 200). NSF states this directly in the guide itself: the PAPPG is “NSF’s implementation of 2 CFR §200,” applying and elaborating those government-wide cost-principles and administrative-requirements rules specifically for NSF proposals and awards, and adding NSF-specific procedures — page and format limits, the two-criterion merit-review process, NSF-specific reporting formats — that 2 CFR 200 does not address at all. The PAPPG applies to NSF financial-assistance awards; it explicitly does not apply to NSF procurement contracts or other non-assistance transactions.

What makes something a genuine PAPPG requirement

A rule is an actual PAPPG requirement — as opposed to a program-specific preference, an institution’s own internal policy, or informal advice from a program officer — when it meets a specific test: it appears in the current edition of the document (or in a policy notice the current edition has since incorporated), and it applies to the proposal or award in question either as a baseline rule or because an individual funding opportunity’s solicitation says it does. Two consequences follow directly from this:

• Solicitations layer on top of the PAPPG, they don’t replace it. An individual NSF program solicitation (the announcement for a specific funding opportunity) can add requirements beyond the PAPPG baseline — a different page limit, an extra required section — and where a solicitation and the PAPPG genuinely conflict, the solicitation controls for that specific competition. Absent an explicit solicitation deviation, the PAPPG baseline governs.
• It binds through the award document, not through the guide’s existence alone. The PAPPG is a standing reference; a specific award is bound by whichever sections its Notice of Award and NSF’s Grant General Conditions (GC-1) or Cooperative Agreement Financial and Administrative Terms and Conditions (CA-FATC) actually incorporate. This differs slightly from the NIH GPS, whose Part II terms and conditions are incorporated wholesale into every NIH Notice of Award by default — the PAPPG’s incorporation runs through the specific sections an NSF award document references, not the whole guide as a single block.

Structure: Part I and Part II

The current PAPPG (NSF 24-1) is organized into two parts, per NSF’s own table of contents:

• Part I — Proposal Preparation and Submission Guidelines (five chapters): Chapter I, Pre-Submission Information; Chapter II, Proposal Preparation Instructions (the formatting, page-limit, and required-section rules most proposal writers interact with directly); Chapter III, NSF Proposal Processing and Review; Chapter IV, Non-Award Decisions and Transactions; and Chapter V, Renewal Proposals.
• Part II — Award, Administration and Monitoring of NSF Assistance Awards (seven chapters): Chapter VI, NSF Awards; Chapter VII, Award Administration; Chapter VIII, Financial Requirements and Payments; Chapter IX, Recipient Standards; Chapter X, Allowability of Costs; Chapter XI, Other Post Award Requirements and Considerations; and Chapter XII, Award Administration Disputes and Misconduct.

This Part I/Part II split mirrors the practical division of labor in a sponsored-programs office: proposal development and submission staff live in Part I day-to-day, while post-award and grants-management staff work primarily from Part II. It is a coarser top-level split than the NIH GPS’s three-part structure (which separately distinguishes generally-applicable terms from award-type-specific ones within its own Part II), but it covers the same overall proposal-to-closeout scope.

Current edition and how it’s revised

The current base edition is NSF 24-1, effective for all proposals submitted or due on or after May 20, 2024. Rather than issuing a full renumbered edition on a fixed cycle, NSF has more recently used targeted policy notices to supplement the 24-1 base text: Supplement 1 (NSF 26-200), applicable to financial assistance awarded on or after December 8, 2025, and Supplement 2 (NSF 26-202), applicable to financial assistance awarded on or after January 22, 2026 — the latter implementing changes to NSF’s public-access requirements, including removing the prior 12-month post-publication embargo on funded-research publications. Each supplement takes precedence over the base 24-1 text for awards made on or after its own effective date, without superseding the rest of the document. A full NSF 25-1 or 26-1 renumbered edition has not been issued as of this writing; NSF has instead used the supplement mechanism to implement time-sensitive statutory and policy changes between full editions. Because the applicable version depends on an award’s specific award date, a research administrator working an active award should confirm which combination of base edition and supplement governs that award, rather than assuming the most recently issued supplement applies retroactively to every open award.

Why research administrators should cite it directly

Nearly every NSF-specific administrative fact a research administrator relies on — proposal page limits and required sections, how the two merit-review criteria (Intellectual Merit and Broader Impacts) are applied, what counts as an allowable cost under Part II Chapter X, or what a continuing grant commits NSF to versus a standard grant — ultimately traces back to a specific PAPPG chapter. Institutional proposal-development guides, sponsored-programs training slides, and third-party grants newsletters are useful for orientation, but they are restatements: they can lag a supplement, compress a nuance, or simply get a detail wrong. The PAPPG itself, plus any applicable supplement, is the version NSF program officers and the Division of Grants and Agreements will cite back to an institution during a compliance question, and the version an NSF proposal reviewer is checking a submission against.

This matters specifically because, as with NIH, NSF increasingly implements time-sensitive changes through supplements before (or sometimes instead of) a full renumbered edition — the two active 24-1 supplements are a direct, current example. A research administrator who relies only on a secondary summary of “the PAPPG” risks missing a supplement that has already taken precedence for awards made after its effective date.

Worked examples

• A proposal-development office needs to confirm the required project-description page limit and which sections a Broader Impacts statement must address before a Friday submission deadline. The definitive answer is Part I, Chapter II of the current PAPPG (NSF 24-1) — not a paraphrase in an internal proposal-prep checklist that may not reflect the latest supplement.
• A sponsored-programs office is closing out an NSF standard grant and needs to know the allowability of a piece of equipment purchased near the end of the project period. Part II, Chapter X (Allowability of Costs) is the governing section, read alongside the award’s own Notice of Award and any applicable 2 CFR 200 cost-principle provisions it incorporates.

What the NSF PAPPG is not

• It is not a government-wide document — 2 CFR 200 (Uniform Guidance) is the government-wide framework federal awarding agencies implement; the PAPPG is NSF’s own agency-specific implementation of and supplement to it, not a replacement.
• It does not apply to NSF procurement contracts or other non-financial-assistance transactions — NSF states this explicitly in the guide’s own stated scope.
• It is not a single, unchanging document indefinitely — targeted policy notices (the current Supplement 1 and Supplement 2) can take precedence over specific base-text provisions for awards made on or after their own effective dates, without a full renumbered edition being issued.
• It is not the same document as an individual NSF program solicitation — a solicitation can add requirements on top of the PAPPG baseline for one specific funding opportunity, but it does not replace the PAPPG’s general rules outside that competition.

Related CASRAI resources

See the Grants Management & Research Funding cluster hub for the full range of CASRAI content on the funding lifecycle, and the NSF Grants: An Overview guide for how the PAPPG’s award-instrument types and merit-review process fit into NSF’s broader funding system. For the cross-agency comparison, see the NIH Grants Policy Statement (NIH GPS) — NIH’s equivalent primary source — and CASRAI’s NIH vs. NSF Data Management Plans guide for one concrete area where the two agencies’ PAPPG/GPS-derived requirements diverge in practice. Also relevant: Uniform Guidance (2 CFR 200), NSF CAREER Award Proposal Requirements, and NIH vs. NSF vs. ERC: AI Policies for Grant Writing.