The R&D Tax Credit · Brief · Working level
Aerospace and defense contractors: FAR contract types and the funded-research screen
Which government contract types leave research credit-eligible with the contractor: firm-fixed-price versus cost-reimbursement under the funded-research rules, first-article testing, and the IR&D versus contract R&D divide.
Aerospace and defense contractors do more engineering per revenue dollar than almost any industry, yet their Section 41 claims turn less on engineering than on procurement law. The funded-research exclusion of Section 41(d)(4)(H) removes research "funded by any grant, contract, or otherwise," and Treas. Reg. §1.41-4A(d) resolves funding through two questions: does payment depend on the success of the research, and does the contractor retain substantial rights in the results? The FAR contract type answers the first question before anyone opens a lab notebook.
FAR contract types through the funded-research lens
The doctrine's foundational case is a government contractor case: Fairchild Industries v. United States (Fed. Cir. 1995) held that under a fixed-price incentive contract with inspection-and-acceptance terms, the contractor was paid only for work the government accepted — payment was contingent on success, so the research was unfunded even though the government ultimately paid for it. The framework, developed further in cases like Populous Holdings and covered in the funded research exclusion guide, maps onto FAR types roughly as follows.
How common contract vehicles typically score on the risk prong:
| Contract type | Payment contingent on success? | Funded-research result |
|---|---|---|
| Firm-fixed-price (FFP) | Yes — contractor absorbs overruns and failures | Generally unfunded; claimable |
| Fixed-price incentive (FPIF) | Largely — risk shared but contractor exposed | Often unfunded (Fairchild) |
| Cost-plus-fixed-fee (CPFF) | No — allowable costs reimbursed regardless | Funded; excluded |
| Cost-plus-incentive/award-fee | Costs reimbursed; only fee at risk | Generally funded as to costs |
| Time-and-materials | No — hours billed regardless of outcome | Generally funded |
| Fixed-price with progress payments | Yes, if acceptance still governs final payment | Usually unfunded; read the clauses |
The rights prong needs its own check. Under standard DFARS data-rights clauses, the government typically takes government purpose or unlimited rights in technical data developed at government expense, but the contractor retains ownership and the right to use the technology commercially — usually enough for substantial rights. Contracts assigning title to inventions and exclusive rights to the government are the exception that fails.
IR&D versus contract R&D
Independent research and development — self-initiated projects charged to overhead and recovered across the contract base under FAR 31.205-18 — is the A&D claimant's cleanest QRE source. No specific contract pays for it, the contractor keeps the technology, and the fact that IR&D costs flow into indirect rates recovered from the government does not make the research "funded"; the courts have treated general cost recovery through overhead as different in kind from a contract paying for particular research. IR&D projects therefore rise or fall on the ordinary four-part test, and contractors already produce the project documentation (IR&D plans, technical objectives, annual reports) that supports it.
Contract R&D under cost-type vehicles is the mirror image: technically superb, contractually funded, excluded. The discipline is segregation — job-cost systems in this industry are strong, so wage and supply QREs should be built from charge numbers tied to FFP development CLINs and IR&D projects, never from department-level allocations that mix funded and unfunded work. The expense categories themselves follow the standard rules in the QRE guide.
First-article testing
First articles concentrate the qualification question. Building the first unit of a new airframe component — resolving producibility, tooling, and tolerance-stack uncertainty through fabrication trials and test failures — is a process of experimentation, and materials consumed in destructive or developmental testing are supply QREs. Government first-article acceptance testing of a design already proven, performed to verify conformance before production release, is routine testing excluded under Section 41(d)(4)(D). In practice the same first-article effort contains both: claim the iterations that resolved uncertainty, stop at acceptance. Under an FFP contract, a failed first article the contractor rebuilds at its own cost is also the best possible evidence on the risk prong.
The IRS research credit overview states the general law; for contractors, the CLIN-by-CLIN funding map is the document that decides the exam.
Frequently asked questions
- Can defense contractors claim the R&D tax credit on government contracts?
- Sometimes. Research under a firm-fixed-price contract, where the contractor is paid only for conforming deliverables and absorbs cost overruns and failed development, generally is not funded research — the contractor bears the risk and can claim qualifying work. Research under cost-reimbursement contracts (cost-plus-fixed-fee and similar), where allowable costs are reimbursed regardless of technical outcome, is generally funded and excluded under Section 41(d)(4)(H).
- Does independent research and development (IR&D) qualify for the Section 41 credit?
- IR&D is the cleanest category for aerospace and defense claimants. It is self-directed, self-funded development — no customer pays for it directly, even though IR&D costs are recoverable as indirect overhead under FAR 31.205-18. Because no contract funds the specific research and the contractor retains rights, IR&D projects face no funded-research problem and qualify or fail purely on the four-part test.
- Is first-article testing qualified research?
- First-article work qualifies to the extent it resolves remaining design or process uncertainty — building and testing the initial unit to prove the design and production method. Government first-article testing that is purely acceptance inspection of a settled design is excluded as routine testing. The contractor's development, fabrication trials, and test-failure iterations before acceptance are the qualifying core.