NIH RePORTER: Searching Funded Research Projects

NIH RePORTER (Research Portfolio Online Reporting Tools Expenditures and Results) is the federal government's primary public database for searching active and completed NIH-funded research projects. This page explains the database's scope, how its search and filtering functions operate, the scenarios in which researchers and institutions most commonly use it, and the boundaries of what the tool can and cannot answer. Understanding RePORTER is essential for anyone navigating the landscape of NIH grant funding, from applicants benchmarking their proposals to journalists verifying federal expenditures.

Definition and scope

NIH RePORTER, maintained by the National Institutes of Health's Office of Portfolio Analysis (OPA), is a publicly accessible repository of data on research projects funded by NIH and, in a broader view, by other components of the U.S. Department of Health and Human Services including the Agency for Healthcare Research and Quality (AHRQ), the Centers for Disease Control and Prevention (CDC), the Food and Drug Administration (FDA), and the Health Resources and Services Administration (HRSA).

The database covers funded project records dating back to fiscal year 1985, giving it a longitudinal span of more than 38 years of federal biomedical research investment. Each record in RePORTER aggregates project abstracts, funding amounts, principal investigator (PI) names, institutional affiliations, activity codes, fiscal years, and links to associated publications in PubMed and patents. As of the RePORTER interface described in NIH documentation, the system draws on more than 800,000 individual project records.

RePORTER is distinct from the broader NIH grant types and mechanisms documentation in that it represents awarded grants only — not applications, not review scores, and not funding decisions in progress.

How it works

RePORTER provides two primary search modes: a Basic Search and an Advanced Search. The Advanced Search exposes the database's full filtering architecture.

A structured search in RePORTER can be filtered along the following dimensions:

1. Fiscal Year — Filter by one or more funding years from 1985 to the current appropriations cycle.
2. Agency/Institute/Center — Narrow results to a specific NIH Institute or Center (IC), such as the National Cancer Institute (NCI) or the National Institute of Mental Health (NIMH), or to an HHS operating division.
3. Activity Code — Filter by mechanism type (e.g., R01, R21, U54, T32), allowing comparison of investigator-initiated awards versus cooperative agreements versus training grants.
4. Principal Investigator — Search by PI name, with the system disambiguating across multi-PI awards.
5. Organization/Institution — Filter by recipient institution name, type (university, hospital, small business, foreign institution), or geographic state.
6. Project Terms / Full-Text — Keyword search across project titles and abstracts using Boolean operators.
7. Funding Range — Set minimum and maximum total cost thresholds in dollar amounts.
8. Congressional District — Locate awards by U.S. House district, a feature commonly used for legislative accountability reporting.

The system returns project records sortable by relevance, total cost, or fiscal year. Each record links to the full abstract, a spending breakdown by direct and indirect costs, and, where applicable, iCite metrics for associated publications (iCite is OPA's bibliometric tool at icite.od.nih.gov).

RePORTER also offers an API (Application Programming Interface) that allows programmatic bulk data retrieval, documented at the NIH RePORTER API page, enabling institutional researchers and policy analysts to run large-scale portfolio analyses without manual search.

Common scenarios

Grant applicants benchmarking proposals. A researcher preparing an R01 application to the National Institute on Aging can search RePORTER for funded R01s in the same topic area to identify competing or complementary projects, understand funding ranges, and refine their specific aims to avoid duplication — a criterion reviewers and program officers assess explicitly under NIH policy.

Institutions tracking their own portfolios. A sponsored programs office at a research university can filter by institution name across fiscal years to produce a complete record of NIH-funded projects, direct costs received, and active PIs, supporting federal financial reporting obligations.

Journalists and policy analysts verifying federal expenditure. Because RePORTER records are public, reporters and Congressional staff use the database to verify spending claims, identify funding concentrations in specific disease areas, and cross-reference award data with appropriations figures available through the NIH budget and federal funding documentation.

Small business applicants. SBIR and STTR applicants can use RePORTER to identify existing Phase I and Phase II awards in their technology space, as documented in the NIH small business grants SBIR/STTR guidance, providing competitive intelligence before submission.

Epidemiologists and portfolio scientists. OPA's own research division uses RePORTER data to produce analyses of NIH portfolio balance, such as the distribution of funding across disease categories, publication output per dollar invested, and investigator career-stage demographics.

Decision boundaries

RePORTER answers questions about awarded projects — it does not contain application-level data such as submission dates, review scores, percentile rankings, or summary statements. Those records are accessible only to applicants and authorized NIH staff through the eRA Commons system.

The database records total project costs (direct plus indirect/facilities-and-administrative costs) rather than breaking out investigator salary components separately. Cost comparisons between institutions therefore reflect differing indirect cost rates negotiated with the federal government, not research output differences.

RePORTER does not serve as the authoritative source for NIH peer review process outcomes — study section assignments, review meeting dates, and priority scores are managed through separate eRA systems.

Searches against the /index of the full NIH information landscape confirm that RePORTER is one of three primary public databases NIH operates for research transparency, alongside PubMed (publication records) and ClinicalTrials.gov (trial registration). RePORTER's scope is limited to funded project metadata and linked outputs — it does not aggregate raw research data, protocols, or datasets, which are managed through NIH's data repositories under the NIH data sharing policy.

Keyword searches in RePORTER return results based on abstract and title text only; project records with confidential or proprietary components filed under Small Business Innovation Research exemptions may have redacted abstracts, limiting full-text search coverage in the SBIR/STTR portfolio segment.