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Important information about NSF’s implementation of the revised 2 CFR

NSF Financial Assistance awards (grants and cooperative agreements) made on or after October 1, 2024, will be subject to the applicable set of award conditions, dated October 1, 2024, available on the NSF website. These terms and conditions are consistent with the revised guidance specified in the OMB Guidance for Federal Financial Assistance published in the Federal Register on April 22, 2024.

Important information for proposers

All proposals must be submitted in accordance with the requirements specified in this funding opportunity and in the NSF Proposal & Award Policies & Procedures Guide (PAPPG) that is in effect for the relevant due date to which the proposal is being submitted. It is the responsibility of the proposer to ensure that the proposal meets these requirements. Submitting a proposal prior to a specified deadline does not negate this requirement.

Updates to NSF Research Security Policies

On July 10, 2025, NSF issued an Important Notice providing updates to the agency's research security policies, including a research security training requirement, Malign Foreign Talent Recruitment Program annual certification requirement, prohibition on Confucius institutes and an updated FFDR reporting and submission timeline.

Changes to NSF Major Research Instrumentation Program for FY 2026

On July 1, 2025, the U.S. National Science Foundation announced that it will not accept new proposals for the NSF Major Research Instrumentation (MRI) Program during the previously scheduled FY 2026 submission window (October 15 – November 14, 2025). Any proposals submitted during this period will be returned without review. NSF currently has many meritorious proposals from the FY 2025 submission window (October 15 – November 15, 2024). Subject to the availability of funds, NSF will instead consider funding additional awards from this cohort in FY 2026. The NSF MRI program anticipates accepting new proposals again during the next submission window, scheduled for October 15 – November 16, 2026.

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