By Michael Maroney | Director, Research & Development Tax Credits

The Phoenix Design Group, Inc. v. Commissioner decision issued on December 23, 2024, is an important reminder of the hurdles faced when substantiating research activities for the R&D tax credit. The court denied all research credits claimed by Phoenix Design Group (PDG), a multidisciplinary engineering consulting firm, for failing to meet key statutory requirements. The court held that PDG failed to show that substantially all activities related to the business components constituted a process of experimentation (POE), and that merely complying with building codes is not enough to meet the definition of qualified research.

This case highlights critical lessons about substantiating claims and the importance of demonstrating qualified research activities under IRC §41.

Key Facts

PDG, a C-corporation, is a multidisciplinary engineering consulting firm that designs mechanical, electrical, plumbing and fire protection (MEPF) systems. The IRS disallowed research credits PDG claimed from 2013 through 2016 and imposed penalties. More than 200 projects were identified over the tax years in question, but a sample of three projects was used to determine:

  1. Whether any of the sampled projects involved qualified research, and
  2. Whether PDG is liable for the accuracy-related penalties imposed by the IRS.

Ultimately, the court decided that without explanations of the engineers’ work or processes, it could not be determined how PDG reached the solutions to issues faced over the course of its business components. The credits were denied and PDG was liable for the penalties imposed. Many of the activities performed were determined to be routine engineering rather than qualified §41 research.

Key Issues and Court Findings

  1. Process of Experimentation: PDG’s claims failed to demonstrate that substantially all activities involved a systematic evaluation of alternatives using the scientific method. The court rejected the argument that broad American Institute of Architects (AIA) design phases inherently reflected a POE. The lack of documentation tying specific employee activities to resolving technical uncertainties during various design stages proved fatal.


    Example:
    For Gerald Champion Military Psychiatry Unit, Project No. 13008.00, the court noted that while PDG engineers revised designs and issued updated drawings, there was no explanation of why or how these revisions addressed uncertainties. For example, the decision to use a variable air volume system to allow individual temperature control was described but not substantiated as part of an iterative design process.

    Takeaway: Clients must clearly document specific qualified activities under the scientific method at every AIA phase (Pre-Design, Schematic Design, Design/Development, and Construction Documents). Use detailed surveys and narratives to align these activities with resolving technical uncertainties. Avoid relying solely on broad categorizations like AIA design phases.

  2. Shrink-Back Rule Application: The court applied the shrink-back rule to evaluate subsets of PDG’s MEPF systems and found none qualified. Even granular subsets failed to demonstrate a sufficient nexus to qualifying research.


    Example
    : For Vanderbilt University Engineering and Science Building (VU ESB), Project No. 12010.01, PDG engineers designed an HVAC system that accounted for laboratory exhaust air, plume height, and room-specific pressure requirements. However, the court found that the activities were routine design adaptations rather than elements of a POE, as uncertainties were neither clearly defined nor systematically resolved. The court found that PDG failed to present evidence that a POE was followed with respect to any business components and subcomponents. The court instead held that PDG merely made decisions or selected options when faced with issues or resolved uncertainties through the actions of other contractors.

    Takeaway: Break down business components into manageable subsets for evaluation. Ensure that all subsets meet the statutory requirements for qualified research, including satisfying the substantially all and POE tests.

  3. Lack of Contemporaneous Documentation: PDG employees recorded time using generic narratives without tying activities to the technical uncertainties resolved or to specific phases. This lack of detail undermined the credibility of the claims and the consistency of the process. The hour sheets did not detail specific activities engineers undertook to resolve uncertainty, and there were discrepancies between hour sheet descriptions and descriptions of PDG’s six-stage design process.


    Example:
    In the BHNM Oxford project, Project No. 13003.00, PDG engineers recorded significant time revising designs for HVAC systems and electrical configurations but provided no contemporaneous records explaining how or why these changes were made. For instance, the placement of air handling units on the roof instead of mechanical rooms was influenced by client preference rather than documented technical evaluation. Throughout the trial, PDG did not clearly distinguish the work performed by various types of engineers at the Company, including mechanical engineers, electrical engineers, and plumbing engineers. PDG also failed to clearly distinguish the work done by CAD designers.

    Takeaway: Encourage clients to maintain contemporaneous documentation, such as detailed employee time records, meeting notes, design calculations, and revisions. Use AIA phase templates as testimony to document how each phase constitutes elements of a POE.

Cited Excerpts

“Merely connecting an activity to a larger plan that may resemble the scientific method does not satisfy the process of experimentation test. While the design process as framed by petitioner may appear similar to the scientific method, the assertion alone is not sufficient for us to find that PDG employees engaged in the process of experimentation.”

“We are also skeptical of whether PDG employees followed petitioner’s description of the six-stage design process because of the way the hour sheets are filled out. PDG employees did not categorize any of their hours on the basis of design phase. Additionally, the descriptions do not appear to line up with the work completed in each stage.”

Key Takeaways

PDG’s inability to substantiate its claims led to a denial of its R&D tax credits, amounting to significant financial penalties and reputational damage. The court highlighted systemic documentation issues and a lack of credible evidence to demonstrate that activities qualified as research under IRC §41. This case serves as a stark reminder that even technically complex work must be clearly documented as qualified research to withstand scrutiny during audits or litigation.

This case underscores the importance of detailed and consistent documentation for substantiating R&D tax credits and serves as a reminder to proactively refine methodologies for documenting and demonstrating qualified research activities. The importance of tying activities to uncertainties and focusing on how tasks and activities tie back to the AIA phases and 4-part test is essential in positioning and preparing Clients with robust and consistent evidence to be better equipped to sustain their credits during audits or litigation.

About the Author

Michael Maroney | KBKG Director

Michael Maroney | Director – Research & Development Tax Credits

Michael Maroney is a Director with KBKG and advises clients on tax matters related to federal and state Research and Development (R&D) Tax Credits. He has advised numerous Fortune 1000 clients across a variety of industries and has successfully defended his client’s R&D claims before the IRS and state taxing authorities… Read More