Cooperative Agreement

A cooperative agreement is one of the three legal instruments the U.S. federal government uses to transfer money to a non-federal recipient, alongside the procurement contract and the grant agreement. What separates it from a grant is not the amount of money, the funding agency, or how the money is drawn down — it is a single legal test: whether the federal agency anticipates substantial involvement in carrying out the funded activity. If the agency expects to be substantially involved, the law requires a cooperative agreement. If it does not, the law requires a grant.

The statutory and regulatory basis

This is not an informal administrative convention — it is set in federal law. The Federal Grant and Cooperative Agreement Act of 1977 (Pub. L. 95-224), codified at 31 U.S.C. §§ 6303–6305, defines all three assistance/acquisition instruments and directs which one an executive agency must use:

• 31 U.S.C. § 6303 — a procurement contract is required when the principal purpose is to acquire property or services for the direct benefit or use of the federal government itself (and the FAR governs it).
• 31 U.S.C. § 6304 — a grant agreement is required when the principal purpose is to transfer money to accomplish a public purpose the government supports, rather than to acquire something for its own use, and no substantial involvement between the agency and the recipient is anticipated in carrying out the activity.
• 31 U.S.C. § 6305 — a cooperative agreement is required under the same “public purpose, not government acquisition” test as a grant, except that substantial involvement between the agency and the recipient is anticipated during performance.

The current implementing regulation, 2 CFR § 200.1 (part of the OMB Uniform Guidance), carries the identical distinction into agency grants management practice: a grant agreement is financial assistance that “does not provide for substantial involvement” by the federal agency in carrying out the funded activity, while a cooperative agreement is financial assistance that “provides for substantial involvement” by the agency (or a pass-through entity) in carrying it out. Every other feature of a cooperative agreement — cost principles, audit requirements, procurement standards for subawards — is otherwise governed by the same Uniform Guidance framework that governs grants; see CASRAI’s Uniform Guidance (2 CFR 200) guide for that shared administrative layer.

The three-way federal funding-instrument taxonomy

Federal research administrators size up a new award correctly by asking two questions in sequence:

1. Is the government acquiring something for its own direct use, or supporting a public purpose? Acquisition → contract. Public purpose → assistance (grant or cooperative agreement).
2. If it’s assistance, does the agency anticipate substantial involvement in carrying out the work? No → grant. Yes → cooperative agreement.

“Substantial involvement” has no bright-line statutory definition, and neither 31 U.S.C. § 6305 nor 2 CFR 200.1 enumerates a checklist. In practice, agencies and courts read it as active participation in the substance of the work — approving a study design or work plan, sitting on a steering committee, co-authoring protocol amendments, or holding go/no-go authority over milestones — not routine grants-management stewardship. The Department of Energy’s Office of Science states the negative case plainly in its own grants-vs-contracts guidance: normal oversight and stewardship (progress-report review, no-cost-extension approval, standard audit) are not substantial involvement, and do not by themselves convert a grant into a cooperative agreement. For a fuller side-by-side of all three instruments, including cost-reimbursement and audit-scope differences, see CASRAI’s comparison: Grant vs. Contract vs. Cooperative Agreement, and the related Federal Government Contracts vs. Grants for University Research guide.

NIH mechanisms: which activity codes are actually cooperative agreements

NIH’s activity-code prefix is the reliable signal, not the mechanism’s name or its milestone structure. Codes in NIH’s “U” series are cooperative agreements by definition — grants.nih.gov’s own activity-code pages label them exactly that way:

• U01 — Research Project Cooperative Agreement (the single-project cooperative-agreement analogue of an R01).
• U19 — Research Program Cooperative Agreement (multi-project, center-scale).
• UG3/UH3 — a linked, bi-phasic Exploratory/Developmental Cooperative Agreement pair (UG3 for the first phase, UH3 for the second), used when NIH wants substantial involvement across a staged, milestone-reviewed project.
• U54, U24, UM1 and similar — specialized-center, resource, and multi-component cooperative agreements, all substantial-involvement instruments by the same U-series convention.

By contrast, NIH’s “R” series are research grants, administered with ordinary investigator independence — including mechanisms that are frequently, and incorrectly, described online as cooperative agreements because they involve staged, milestone-gated funding. The clearest example is R33: it funds the second phase of the R21/R33 or R61/R33 phased-award structure, and NIH staff do confirm that go/no-go milestones were met before releasing R33-phase funding — but that milestone review is not the same thing as substantial involvement in the conduct of the research itself, and R33 sits in the R series, not the U series. See CASRAI’s R33 (NIH Exploratory/Developmental Grant) entry for the full distinction. A standard R01 is the clearest grant baseline: NIH’s own Grants Policy Statement (§2.3.3) describes “generally little” NIH staff involvement in the actual conduct of R01-funded work, which is exactly the “no substantial involvement” condition 2 CFR 200.1 and 31 U.S.C. § 6304 require for an award to be a grant rather than a cooperative agreement.

NSF follows the same statutory test under its own PAPPG (Proposal & Award Policies & Procedures Guide): cooperative agreements there are typical for large research centers, multi-user facilities, and projects with heavy NSF programmatic participation, including large-facility construction funded through the separate MREFC account and administered by NSF’s Cooperative Support Branch. NSF’s standard single-investigator research grant is not a cooperative agreement, for the same reason an NIH R01 is not.

Why the distinction is administratively consequential, not just semantic

Because a cooperative agreement anticipates substantial agency involvement, the awarding agency typically retains explicit rights the recipient does not have under a grant — approval authority over key personnel changes, work-plan or protocol revisions, subaward selection, or publication/data-release timing, spelled out in the award’s terms and conditions rather than assumed. A recipient (and its sponsored-programs office) should read a cooperative agreement’s terms and conditions with that in mind: the level of agency participation described there is the actual, binding definition of “substantial involvement” for that specific award, not the general principle above.

Related CASRAI content

• Comparison: Grant vs. Contract vs. Cooperative Agreement
• Guide: Uniform Guidance (2 CFR 200)
• Guide: Federal Government Contracts vs. Grants for University Research
• Dictionary: R33 (NIH Exploratory/Developmental Grant)
• Domain: Funding lifecycle and financial vocabulary