Research Funding and Success Rates

NHLBI funding supports researchers at more than 520 research institutions in the U.S. and internationally, as well as about 80 laboratories located at the NIH campus in Bethesda, Maryland. NHLBI's budget is primarily provided by annual funding (or appropriations) from the U.S. Congress.

NHLBI Annual Budget (Appropriations from Congress)

*In March 2020, NHLBI received $103 million in supplemental appropriations for research on COVID-19, through the CARES Act.

Source: February 2, 2021, Meeting of the National Heart Lung, and Blood Advisory Council, NHLBI Director’s Update.

Success Rates for Research Grant Applications Submitted to NHLBI

Success Rates for Percentiled R01 Grant Applications

Source: February 2, 2021, Meeting of the National Heart Lung, and Blood Advisory Council, NHLBI Director’s Update.

Success Rates for Percentiled R01s from Early-Stage Investigators

Source: February 2, 2021, Meeting of the National Heart Lung, and Blood Advisory Council, NHLBI Director’s Update.