Effective 12/8/25, all proposals must follow new supplemental guidance to the Proposal and Award Policies and Procedures Guide (PAPPG) 24-1. This applies to U.S. National Science Foundation (NSF) grants and cooperative agreements. The supplemental guidance takes precedence over existing policies and procedures set forth in the 24-1 version of the PAPPG for all financial assistance awarded on or after the effective date of this notice or the respective dates set in notices cited in this notice.
Background: The release of Executive Order 14332: Improving Oversight of Federal Grantmaking requires the Office of Management and Budget (OMB) to streamline and transform the Uniform Guidance. To ensure alignment with the Uniform Guidance, NSF will defer release of NSF 26-1 PAPPG, previously developed and planned for publication in Fiscal Year 2026.
While publication of the PAPPG has been deferred, NSF will continue to publish financial assistance policies to advance administration priorities, implement statutes, memorialize current practices, and implement other time sensitive matters. NSF will issue policy changes via NSF supplemental Policy Notices in the interim.
For further details, including a list of policy revisions organized by PAPPG chapter, see the full supplemental guidance. If you have questions, please contact your Grant Administrator.
