NSF Slashes Minimum Peer Reviews from Three to Two in Quiet Overhaul

The National Science Foundation has overhauled its merit review process in ways that concentrate more decision-making power in the hands of individual program officers. Under the new rules, effective since December 15, 2025, the minimum number of external reviews required for a proposal has dropped from three to two — and one of those two can now be conducted by an NSF staff member rather than an outside expert.

What Changed in NSF 26-200

The policy update goes well beyond the review threshold. Panel discussions, previously a standard part of NSF's merit review, are now optional. When panels do convene, their written summaries are limited to three to five sentences — down from the detailed multi-paragraph analyses that researchers have relied on for decades to strengthen resubmissions.

The cumulative effect, according to the agency's own description, is "substantially more individual discretion" for program officers in making award decisions. NSF also raised funding caps for several proposal categories: RAPID grants for urgent research now cap at $300,000 (up from $200,000), EAGER proposals for high-risk research increased to $400,000 (from $300,000), and conference grants up to $200,000 can be awarded without external review entirely.

Why This Matters for Applicants

The changes arrive as NSF navigates severe operational strain. The agency has awarded just 613 grants so far this fiscal year — roughly 20 percent of the typical pace. Director Sethuraman Panchanathan resigned in April 2025 and no permanent replacement has been nominated. Chief of Staff Brian Stone has been performing director duties for nearly a year.

For applicants, the practical implications are twofold. The reduced review requirements mean less structured feedback on declined proposals, making the path to successful resubmission murkier. But the elevated funding caps for RAPID, EAGER, and conference proposals represent a genuine expansion of what researchers can request through streamlined mechanisms — particularly valuable for time-sensitive work.

How Researchers Should Adapt

Principal investigators should invest more effort in project summaries and narrative clarity, since fewer reviewers means each review carries outsized weight. Researchers with time-sensitive or high-risk projects should note the new RAPID ($300K) and EAGER ($400K) thresholds. A new research security training requirement — mandatory for all senior personnel before submission — adds a compliance step that unprepared teams risk missing. Detailed analysis of how these changes affect specific NSF directorates is available on the Granted blog at grantedai.com.