A common question from manufacturers is whether failure analysis — diagnosing why a product or process failed — can be part of qualified research for the federal R&D tax credit under Section 41. The short answer is that failure analysis may be part of qualified research when it is used to identify a technical uncertainty, evaluate corrective alternatives, and develop an improved business component. Routine troubleshooting that applies known fixes to known problems generally is not qualified research. This page explains the framework in general terms. It is educational and is not individualized advice. For the foundational framework, see our page on qualified research.
When Failure Analysis May Warrant Review
Failure analysis may warrant review when it is part of a process of experimentation directed at eliminating a technical uncertainty about a business component. Under the four-part test, the work must be for a permitted purpose (developing or improving a business component), be technological in nature, be intended to eliminate uncertainty, and be conducted through a process of experimentation.
Common scenarios that may warrant review include:
- Diagnosing new failure modes — investigating a failure that has not been seen before and whose cause is uncertain, where the investigation is directed at understanding and resolving the uncertainty.
- Root-cause investigation — systematically evaluating alternative root-cause hypotheses to determine why a failure occurred, where the cause is uncertain.
- Testing corrective designs — evaluating alternative corrective designs or process changes to resolve uncertainty about which correction will eliminate the failure.
- Developing improved designs based on failure analysis — using failure analysis to identify the technical limitation and then evaluating alternatives to develop an improved business component.
In each case, the question is whether the failure analysis is part of an evaluative process directed at eliminating a technical uncertainty and developing or improving a business component.
Routine Troubleshooting vs. Failure Analysis as Research
A central distinction is between routine troubleshooting and failure analysis as research:
- Routine troubleshooting — diagnosing a known failure mode with a known cause and applying a known fix. There is no technical uncertainty about the cause or the solution; the work is applying established knowledge. This is routine maintenance, not research.
- Failure analysis as research — investigating a failure where the cause is uncertain, evaluating alternative hypotheses, and developing a corrective design or process change through experimentation. This may warrant review as qualified research.
The distinction turns on whether there is a genuine technical uncertainty about the cause or the solution. A company that is simply applying a known fix to a known problem is generally not conducting research. A company that is investigating an uncertain failure and developing a new solution may be. For more on this distinction, see our page on troubleshooting vs. R&D.
Hypothetical Example
Consider a manufacturer of industrial pumps that is experiencing premature seal failures in a new pump design and is uncertain why the seals are failing. The company investigates the failure mode, evaluates alternative root-cause hypotheses (material incompatibility, pressure spikes, thermal expansion), tests each hypothesis, and develops and tests alternative seal designs to resolve the uncertainty. This systematic investigation of an uncertain failure and evaluation of corrective alternatives may warrant review as qualified research.
By contrast, if the same manufacturer experiences a known seal failure mode with a known cause and simply replaces the seals with a known upgrade, that is routine troubleshooting, not research.
This example is illustrative only and does not state that the activity definitely qualifies.
Failure Analysis After Commercial Production
A consideration for failure analysis is the commercial-production boundary. Failure analysis that occurs after commercial production has begun may fall within the post-commercial-production exclusion, unless it is directed at developing an improved business component that involves a new technical uncertainty. Failure analysis that occurs during development, before commercial production, is more likely to be part of qualified research. For more, see our page on research after commercial production.
Documentation That May Help
Records that can help support failure analysis claims include failure investigation reports identifying the uncertainty and alternative hypotheses, root-cause analysis records, test results for corrective designs, records of how results informed design or process changes, and records showing when commercial production began. For more, see our page on R&D tax credit documentation.
Key Takeaway
Failure analysis may be part of qualified research when it is used to identify a technical uncertainty, evaluate corrective alternatives, and develop an improved business component. Routine troubleshooting that applies known fixes to known problems generally is not qualified research. Because the distinction is fact-specific, professional review is appropriate before claiming the credit.