Employee interviews are a common feature of R&D tax credit studies, but there are questions about whether they are required, what they accomplish, and how they relate to the legal test for qualification. This page explains the role of interviews in the study process. It is educational and is not individualized advice. For more on the study process, see our page on R&D tax credit study cost.
What Interviews Are Used For
In an R&D tax credit study, interviews are used to gather information about the business's research activities. A consultant or analyst interviews engineers, developers, managers, and other personnel to understand what work was done, what technical uncertainty was addressed, what alternatives were considered, what experiments were conducted, and what results were achieved. The interviews help the consultant reconstruct the technical story of the projects, especially when the study is retrospective — conducted after the tax year ends. For more on the study process, see our page on how the R&D tax credit works.
Are Interviews Required?
The IRS does not universally mandate employee interviews as a requirement for every R&D tax credit claim. The IRS has published guidance describing the information required for a valid research credit claim for refund — including business components, activities, and qualified expense totals — but it does not prescribe interviews as a required method for gathering that information. Interviews are a methodology used by some providers, not a legal requirement. For more on IRS expectations, see our page on R&D tax credit documentation.
What Interviews Accomplish
Interviews can help reconstruct technical facts that may not be fully captured in written records. Engineers may have detailed knowledge of the uncertainty, alternatives, and experiments that is not reflected in project notes or tickets. Interviews can surface this knowledge and help the consultant understand the technical work. For retrospective studies, interviews are often the primary method for reconstructing the technical story. For more on the technical framework, see our page on qualified research.
Interviews Are Not the Legal Test
Interviews are a tool for gathering information, not the legal test for qualification. Whether activities constitute qualified research depends on whether they satisfy the four-part test under Section 41(d) — permitted purpose, technological in nature, elimination of uncertainty, and process of experimentation. Interviews help gather the facts that the analysis applies the test to, but the interviews themselves do not determine qualification. For more on the four-part test, see our page on the four-part test.
Contemporaneous Records May Reduce the Reconstruction Burden
If a business has maintained contemporaneous records — project documentation, experiment logs, evidence — throughout the year, the reconstruction burden is reduced. The consultant can rely on the existing records and may need fewer or shorter interviews to fill gaps. If the business has no contemporaneous records, the consultant may need more extensive interviews to reconstruct the technical story. For more on why timing matters, see our page on contemporaneous R&D documentation.
Provider Methodologies Vary
Different providers use different interview methodologies. Some conduct detailed, structured interviews with each employee; others use group interviews or manager summaries. Some interview a sample of employees and extrapolate; others interview everyone involved. The methodology affects the quality and reliability of the information gathered. For more on comparing providers, see our page on how to choose an R&D tax credit provider.
What Interviews Do Not Replace
Interviews do not replace contemporaneous records. A study that relies solely on interviews, with no supporting documentation, may be vulnerable on examination. The IRS has noted that studies relying on manager recollection without supportable records can fail to establish the required connection between activities and costs. Interviews are most useful when they are combined with supporting records, not when they replace them. For more on recordkeeping, see our page on R&D tax credit recordkeeping.
How Interviews Affect the Timeline
Interviews take time — scheduling, conducting, and documenting them. More interviews mean a longer study timeline. The number of interviews depends on the number of projects, employees, and business components. For more on the timeline, see our page on R&D tax credit study turnaround time.
Key Takeaway
Employee interviews are commonly used by some R&D tax credit providers to reconstruct technical facts, but they are not the legal test for qualification, and the IRS does not universally mandate them. Interviews can help gather information, especially for retrospective studies, but they do not replace contemporaneous records. Provider methodologies vary, and the right approach depends on the business's facts. For more on the study process, see our page on R&D tax credit study cost.