The R&D tax credit is one of the most misunderstood tax incentives in the U.S. tax code. Many businesses assume "R&D" means lab coats and test tubes. In reality, the IRS definition of qualified research is broad enough to cover software development, engineering design, process improvement, and more. This checklist helps you identify where your business may have qualified research activities.
The Four-Part Test: A Quick Self-Assessment
For each activity you are evaluating, ask four questions: (1) Is the purpose to develop or improve a business component—a product, process, software, or formula? (2) Is the work technological in nature—grounded in engineering, computer science, biology, chemistry, or physics? (3) Was there genuine uncertainty about whether the approach would work? (4) Did the team try different approaches—through testing, prototyping, or iterative development?
Common Qualifying Activities by Industry
Software companies: developing new algorithms, building custom databases, creating original software architectures, and optimizing system performance. Manufacturing companies: developing new product formulations, redesigning production processes, tooling design, and materials testing. Life sciences: drug discovery, formulation development, diagnostic tool design, and clinical method development.
Key Takeaways
- The four-part test applies to activities, not industries—many sectors qualify.
- Software development, engineering design, and process improvement frequently qualify.
- If you have technical uncertainty and you tried multiple approaches, the activity is worth evaluating.
