How NIH actually scores your application.
For due dates on or after January 25, 2025, NIH's Simplified Review Framework consolidates the old five criteria (Significance, Innovation, Approach, Investigators, Environment) into three factors. Two are scored 1–9. One is a sufficiency judgment. Together they produce the Overall Impact score that determines funding.
Most research project grants (R01, R03, R15, R16, R21, R33, R34, R36, R61) and SBIR/STTR (R41, R42, R43, R44, U43, U44) with due dates on or after January 25, 2025. Fellowships, career development (K), training (T), and center awards use parallel-but-distinct frameworks — check the FOA.
Importance of the Research
Does the proposed research address an important problem or a critical barrier to progress in the field? If achieved, how would the work change concepts, methods, technologies, or clinical practice? Innovation asks whether the application challenges current paradigms or uses novel concepts, approaches, or methodologies. Reviewers give ONE integrated score.
This score comes from your Specific Aims page and the Significance/Innovation sections of Research Strategy. If a reviewer cannot articulate the change your work would make in the field after reading Aims alone, you will not score well here.
Rigor and Feasibility
Is the overall strategy well-reasoned? Are the design, methods, and analyses rigorous and appropriate to accomplish the specific aims? Have preliminary data been presented (where appropriate)? Are potential problems, alternative strategies, and benchmarks for success presented? Does the design address sex as a biological variable?
This is where most applications lose points. Every aim needs an experimental design, expected outcomes, potential pitfalls, and alternative approaches. Rigor & Reproducibility elements — biological/chemical resource authentication, sex-as-a-biological-variable — are evaluated inside this factor.
Expertise and Resources
Are the PD(s)/PI(s), collaborators, and other researchers well suited to the project? Is the scientific environment in which the work will be done appropriate? Do the institutional support, equipment, and physical resources appropriately support the proposed activities? Factor 3 is not numerically scored — reviewers rate it "Sufficient" or "Additional expertise or resources needed." Any concerns are described in narrative and can worsen the Overall Impact.
Biosketches, Facilities & Other Resources, Equipment, and Letters of Support drive this factor. For SBIRs the Contact PD/PI employment rule is verified here. Concerns here rarely raise your score but can sink it.
The Overall Impact score is the reviewer's holistic judgment of the likelihood the project will exert a sustained, powerful influence on the research field. It is not a weighted average of the factor scores. A '2' on Factor 1 with a '5' on Factor 2 can end up anywhere in the 3–5 range depending on the reviewer's weighting.
Three assigned reviewers each submit preliminary Overall Impact scores. If the range warrants discussion the application is discussed at study section; a final Overall Impact is then scored by all voting members (1–9) and averaged, then multiplied by 10 to produce the reported impact score (10–90).
- 1ExceptionalHigh Impact
- 2OutstandingHigh Impact
- 3ExcellentHigh Impact
- 4Very GoodMedium Impact
- 5GoodMedium Impact
- 6SatisfactoryMedium Impact
- 7FairLow Impact
- 8MarginalLow Impact
- 9PoorLow Impact
LOWER IS BETTER. A '1' IS THE BEST POSSIBLE SCORE.
Before the meeting, SROs use assigned-reviewer preliminary scores to identify the roughly bottom half of applications. Those are "Not Discussed" — no oral discussion, no Overall Impact score, no percentile. You still receive written critiques, and you can resubmit as an A1.
ND is not a rejection of your science — it's a triage of meeting time. Read the critiques the same way you would read a discussed summary statement.
For most R01s, the impact score is converted to a percentile against the last three council-round cohorts for that study section. Some ICs publish an annual payline; many do not, and recent R01 paylines have ranged from single digits to the mid-teens depending on the IC. Applications inside the payline are typically funded; those outside may still be funded via IC discretion.
SBIR/STTR generally do not use percentiles — funding is decided by impact score plus IC portfolio priorities.
Every application is either a new submission (A0) or a resubmission of a previously reviewed A0 (A1). You get one A1 per A0. If the A1 is unsuccessful, your next attempt on the same idea must be submitted as a new A0.
An A1 must include an Introduction (typically 1 page for R-series; check the NOFO) that responds to reviewer critiques and summarizes substantial additions and changes. Changes in the Research Strategy should be marked (e.g. vertical bar in the margin), and the Introduction should explicitly address each major concern raised in the previous summary statement.
Grant Review Pro can auto-generate a first-draft NIH-format Introduction from your Mock Study Section critique. See how the Mock Study Section works →
The Submission Match and Mock Study Section engines mirror this framework. Sub-scores roll up into Factor 1 (Importance) and Factor 2 (Rigor & Feasibility) bands; Factor 3 (Expertise & Resources) is surfaced as sufficiency flags when your inputs raise a concern. Our estimated impact-score range uses the same 1–9 scale a reviewer would assign. Full methodology →
The NIH Guide Notice that established the Simplified Review Framework for most research project grants, effective for due dates on or after January 25, 2025. Defines Factors 1, 2, and 3, and how Overall Impact is derived.
The establishing NIH Guide Notice for the Simplified Review Framework. Cited alongside NOT-OD-24-084 for the full policy trail.
CSR's public overview of how study sections work: assigned reviewers, preliminary scores, Not Discussed triage, discussion order, and final voted Overall Impact.
The nine-point scale, descriptor mapping (Exceptional → Poor), and how criterion scores relate to Overall Impact.
One A1 per A0. Introduction requirements, marking-changes convention, and what happens when an A1 is unsuccessful.