A common question from engineering and construction companies is whether foundation design development can qualify as research and development for the federal R&D tax credit under Section 41. The short answer is that foundation design development may constitute qualified research when the work evaluates alternative approaches to resolve a technical uncertainty about foundation performance. Routine foundation design using established methods 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 Foundation Design Development May Warrant Review
Foundation design development may warrant review when the work involves a genuine technical uncertainty and a process of experimentation. Under the four-part test, the work must be for a permitted purpose, be technological in nature, be intended to eliminate uncertainty, and be conducted through a process of experimentation.
Common scenarios that may warrant review include:
- New soil condition — evaluating alternative foundation approaches to resolve uncertainty about whether a foundation can achieve the required performance in a new soil condition.
- New load — testing alternative approaches to resolve uncertainty about whether a foundation can handle a new load type.
- New method — evaluating alternative foundation methods to resolve uncertainty about whether a new method can achieve the required performance.
- Soil-structure interaction — testing alternative approaches to resolve uncertainty about how a foundation interacts with a new soil type.
Routine Design vs. Foundation Development
A central distinction is between routine foundation design and foundation development:
- Routine design — designing foundations using established methods and known soil data. There is no technical uncertainty. This is design, not research.
- Foundation development — developing new foundation approaches where there is a technical uncertainty about whether the foundation can achieve the required performance, and evaluating alternatives to resolve that uncertainty. This may warrant review.
Hypothetical Example
Consider a company that is developing a new foundation approach for a new soil condition and is uncertain whether any available approach can achieve the required load capacity without excessive settlement. The company evaluates alternative approaches, tests each, and systematically varies the approach to resolve the uncertainty. This systematic evaluation of alternatives may warrant review as qualified research.
By contrast, if the same company designs a standard spread footing using established methods and known soil data, that is routine design, not research.
This example is illustrative only and does not state that the activity definitely qualifies.
Documentation That May Help
Records that can help support foundation development claims include design records identifying the uncertainty and alternative approaches, geotechnical test results, and records of how results informed design changes. For more, see our page on R&D tax credit documentation.
Key Takeaway
Foundation design development may constitute qualified research when the work evaluates alternative approaches to resolve a technical uncertainty about foundation performance. Routine foundation design using established methods generally is not qualified research. Because the distinction is fact-specific, professional review is appropriate before claiming the credit.