A common question from engineering and construction companies is whether structural connection development can qualify as research and development for the federal R&D tax credit under Section 41. The short answer is that structural connection development may constitute qualified research when the work evaluates alternative approaches to resolve a technical uncertainty about connection performance. Routine connection design using established standards 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 Connection Development May Warrant Review
Structural connection 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 connection type — evaluating alternative connection designs to resolve uncertainty about whether a new connection can achieve the required strength.
- New material — testing alternative approaches to resolve uncertainty about whether a new material can be used in structural connections.
- New load — evaluating alternative approaches to resolve uncertainty about whether a connection can handle a new load type.
- Seismic — testing alternative approaches to resolve uncertainty about whether a connection can achieve the required seismic performance.
Routine Design vs. Connection Development
A central distinction is between routine connection design and connection development:
- Routine design — designing connections using established standards and known methods. There is no technical uncertainty. This is design, not research.
- Connection development — developing new connection approaches where there is a technical uncertainty about whether the connection 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 structural connection for a new high-strength material and is uncertain whether any available connection design can achieve the required strength. The company evaluates alternative designs, 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 bolted connection using an established standard, 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 connection development claims include design records identifying the uncertainty and alternative approaches, structural test results, and records of how results informed design changes. For more, see our page on R&D tax credit documentation.
Key Takeaway
Structural connection development may constitute qualified research when the work evaluates alternative approaches to resolve a technical uncertainty about connection performance. Routine connection design using established standards generally is not qualified research. Because the distinction is fact-specific, professional review is appropriate before claiming the credit.