The federal research credit under Internal Revenue Code Section 41 supports qualifying research activities, but technical complexity alone does not establish eligibility. In Phoenix Design Group, Inc. v. Commissioner, T.C. Memo. 2024-113, filed December 23, 2024, the Tax Court considered research credits claimed by an engineering consulting firm. This study examines that decision and its implications for engineering services.
Phoenix Design Group is the case analyzed here. The source document’s suggested connection to a broader “Valk” controversy is unsupported and should not be treated as part of the case history. Phoenix Design Group and Valk are not interchangeable case names.
The Statutory Architecture of the Research and Development Tax Credit
Section 41 requires a component-specific analysis of qualified research. Taxpayers must satisfy the research expenditure requirement, the technological-information requirement, the business-component and qualified-purpose requirements, and the process-of-experimentation requirement. They must also establish eligible costs and address the statutory exclusions.
The Business Component Test and Permitted Purpose
Section 41(d)(1)(B) requires research directed toward information intended to be useful in developing a new or improved business component. Section 41(d)(2)(B) defines the relevant categories as products, processes, software, techniques, formulas, and inventions held for sale, lease, or license, or used in the taxpayer’s business. An engineering firm must identify the particular component implicated by its work; describing an entire engagement as engineering does not complete that analysis.
The experimentation must relate to a new or improved function, performance, reliability, or quality. Style, taste, cosmetic, and seasonal design purposes do not qualify. Client design work can potentially qualify when all applicable requirements are met, including the rules for adaptation and funded research.
The Technological in Nature Requirement
The process used to discover information must fundamentally rely on physical or biological sciences, engineering, or computer science. Existing technologies and scientific principles may be used. The law does not require an advance beyond the common knowledge of skilled professionals in the field. Nevertheless, employing engineers or using technical software does not by itself demonstrate qualified research.
The Research Expenditure Test: Elimination of Technological Uncertainty
For the historical tax years discussed in Phoenix Design Group, Section 41(d)(1)(A) referred to Section 174. Uncertainty concerns the capability or method of developing or improving a component, or its appropriate design, based on information available to the taxpayer. A general statement that a project was challenging is insufficient to establish the nature of that uncertainty.
An objective examination of available information is different from requiring that no one in the industry knew a solution. The taxpayer need not expand the field’s common knowledge. The relevant evidence should establish what information was available at the outset, what remained unresolved, and what investigative activities the taxpayer performed.
For amounts paid or incurred in taxable years beginning after December 31, 2024, the amended Section 41(d)(1)(A) refers to domestic research or experimental expenditures under Section 174A, subject to the legislation’s transition provisions. Historical Section 174 references in court opinions should therefore be read in their tax-year context.
The Process of Experimentation Test
Under Treasury Regulation Section 1.41-4(a)(5), a process of experimentation evaluates one or more alternatives where capability, method, or appropriate design is uncertain at the beginning of the research. Modeling, simulation, and systematic trial and error are possible methods. Ordinary troubleshooting or design revisions qualify only when the actual activities satisfy the legal requirements.
There is no universal requirement to experience failed attempts or to use a particular hypothesis template. Nor does a project’s successful completion prove or disprove experimentation. The taxpayer must demonstrate the evaluative process actually undertaken.
The substantially-all threshold is 80% of the relevant research activities, measured on a cost basis or another consistently applied reasonable basis. It is applied separately to each business component and is not automatically a percentage of total project spending.
| Statutory Test | Code Section | Core Requirement | Common Pitfall |
|---|---|---|---|
| Business Component | §41(d)(1)(B), (2), and (3) | Information useful to a new or improved component; qualified purpose | Using a broad project label without identifying the component and intended improvement |
| Technological in Nature | §41(d)(1)(B)(i) | Fundamental reliance on qualifying scientific or engineering principles | Assuming personnel credentials establish the nature of the activities |
| Elimination of Uncertainty | §41(d)(1)(A); historical §174 and current §174A | Qualifying research expenditures and unresolved capability, method, or design questions | Failing to show what remained uncertain given the information available to the taxpayer |
| Process of Experimentation | §41(d)(1)(C) | Substantially all relevant activities involve an evaluative process for a qualified purpose | Equating ordinary project phases or design changes with demonstrated experimentation |
Deep Dive: Phoenix Design Group, Inc. v. Commissioner
Phoenix Design Group provided mechanical, electrical, plumbing, and fire-protection engineering services. The dispute concerned research credits for tax years 2013 through 2016. The parties used a stipulated sample of three projects to resolve the research-qualification dispute. The court found no qualifying research established for the sampled projects, resulting in disallowance under the parties’ agreement.
Analysis of the Sampled Projects
The sampled work included the Baptist Memorial Hospital–North Mississippi project in Oxford. The taxpayer relied on its design process to support qualification. The central problem was that descriptions of the process and completed designs did not adequately establish the particular uncertainties and experimental activities needed for Section 41.
Industry design phases can help organize evidence, but their names are not substitutes for evidence. A sequence of planning, schematic design, design development, and construction documentation does not establish that substantially all relevant activities involved evaluating alternatives to resolve technological uncertainty. Equally, the decision should not be read as a categorical prohibition on research performed within standard architectural or engineering phases.
The Failure of Investigative Activities
Applying known data to established calculations may resolve a design task without qualifying investigation. Firms should distinguish those activities from modeling or testing alternatives where the appropriate design remains uncertain. Describing a problem and presenting the finished solution leaves an evidentiary gap if the intervening evaluative work is not explained.
Documentation and Time-Tracking Deficiencies
The record did not adequately connect the claimed work to qualifying research activities. Broad descriptions of engineering duties or project phases are less useful than evidence explaining the particular component, uncertainty, alternatives, evaluation, and associated costs.
Contemporaneous technical records and reliable time allocations can strengthen a claim. However, the governing rules do not prescribe one mandatory timekeeping platform, and retrospective evidence is not automatically inadmissible. Its specificity, credibility, and relationship to underlying records matter. Strong documentation substantiates qualifying activities; it cannot transform routine work into qualified research.
| Project Aspect | Taxpayer Argument | Court Finding | Rationale |
|---|---|---|---|
| Design Methodology | Standard design stages demonstrated experimentation | Qualification was not established | A process description did not sufficiently prove the experimental activities performed |
| Uncertainty | Complex design challenges supported qualification | Qualifying uncertainty and investigation were inadequately demonstrated | Project difficulty alone did not establish the required uncertainty and evaluative work |
| Documentation | Project materials and work descriptions supported the claims | The evidence was insufficient | The record did not adequately connect claimed activities with the qualification requirements |
| Personnel Roles | Engineering work supported inclusion of employee costs | Job functions alone did not establish eligibility | Actual qualified services and related costs required substantiation |
The Mechanics of the “Substantially All” Rule and the Shrink-Back Rule
These rules help determine the level at which research qualifies. They are existing features of the statutory and regulatory framework, rather than new requirements created by Phoenix Design Group.
The 80% Threshold Calculation
On a consistently applied measurement basis, the relevant ratio is activities constituting elements of a qualifying process of experimentation divided by the research activities for the business component. The ratio must be at least 80%. The remaining activities must satisfy the applicable research expenditure requirement and must not fall within an exclusion.
This test should not be confused with the separate substantially-all rule for an employee’s qualified services. Direct research, direct supervision, and direct support also require careful treatment under the expense rules. Job titles, prototype novelty, and the percentage of a product that is new do not replace the required activity analysis.
Applying the Shrink-Back Rule
Treasury Regulation Section 1.41-4(b)(2) first applies the qualification requirements to the discrete business component. If the requirements are not met, the analysis proceeds to the most significant subset of elements and continues until a qualifying subset is found or the most basic element fails. This is not permission to select an arbitrary collection of favorable activities.
Phoenix Design Group illustrates that shrinking back cannot cure an evidentiary gap where qualifying work at a narrower level is also unsubstantiated. Identifying a potentially experimental subsystem is useful only when the taxpayer can establish its relevant activities and associated expenses.
Comparative Jurisprudence: Trends in Recent Court Cases
Related decisions illustrate distinct qualification and expense issues. Their holdings depend on their own records and should not be collapsed into a blanket rule against engineering research.
Little Sandy Coal v. Commissioner (2021/2023)
Little Sandy Coal Co. v. Commissioner, T.C. Memo. 2021-15, affirmed at 62 F.4th 287 (7th Cir. 2023), concerned shipbuilding projects and the substantially-all requirement. The taxpayer could not establish experimentation merely by pointing to the novelty of the vessels. The relevant inquiry concerns activities, supported by a defensible quantitative analysis. Routine quality-control testing must be distinguished from testing that evaluates alternatives to resolve design uncertainty.
Betz v. Commissioner and the Adaptation Exclusion
Betz v. Commissioner, T.C. Memo. 2023-84, examined research-credit claims involving pollution-control equipment. The decision addressed multiple qualification and substantiation issues. The court applied the adaptation exclusion as an alternative ground for a project involving an existing design with minor site-specific changes. It also examined whether information already available to the taxpayer resolved claimed uncertainty. It would overstate the decision to characterize all its disallowances as adaptation findings.
Moore v. Commissioner and the Supervision Requirement
Moore v. Commissioner, T.C. Memo. 2023-20, addressed a chief operating officer’s claimed qualified wages. Evidence of involvement in new product development did not adequately quantify time spent on qualified research. Supervising first-line supervisors did not establish direct supervision of research. The lesson is to substantiate actual qualified services; seniority alone neither qualifies nor categorically excludes an employee’s own research work.
| Case Name | Year | Key Issue | Judicial Outcome |
|---|---|---|---|
| Little Sandy Coal | 2023 appellate decision | 80% rule and prototype novelty | Disallowance affirmed; novelty did not establish the required experimental activities |
| Moore | 2023 | COO qualified services and wage substantiation | Claimed COO wages disallowed; qualifying time and direct supervision or support were not established |
| Betz | 2023 | Research qualification, substantiation, and adaptation | Credits disallowed; project-specific grounds included failure to establish qualifying research |
| Phoenix Design Group | 2024 | Engineering design process and research qualification | Sampled projects did not establish qualified research |
Why Technical Complexity Does Not Establish Qualification
A complex result, an original product, or a highly trained team may provide context for a claim, but none independently satisfies Section 41. These decisions reinforce the need to explain what the taxpayer actually did and how those activities meet each applicable requirement.
The Relationship Between Documentation and Substantiation
Specific records make a claim easier to evaluate and defend. No documented causal rule guarantees that more detailed records will sustain a credit. Contemporaneous evidence is valuable, while a later narrative is strongest when it accurately explains records and testimony rather than supplying unsupported assumptions.
The Importance of Methodology
The analysis should connect uncertainty, alternatives, evaluation, and results. A successful project can qualify even without repeated failures. An unsuccessful project can also qualify. Neither outcome eliminates the need to establish the nature and extent of the research activities.
Implications for the Architecture, Engineering, and Construction Sector
Firms should use their existing design records to explain the legal requirements in concrete terms. Drawings, calculations, simulation files, design-review notes, and correspondence may be useful when they show actual evaluation of alternatives. Standard project phases are an organizational aid, but a claim still requires component-specific analysis and reliable cost support.
The Funded Research Controversy and Contractual Risk
Section 41(d)(4)(H) excludes funded research. Treasury Regulation Section 1.41-4A(d), incorporated by the applicable research regulations, addresses payment arrangements and rights to research results. This is a separate eligibility issue and should not be presented as a distinct holding of Phoenix Design Group.
Contract analysis considers whether payment is contingent on successful research and whether the taxpayer retains substantial rights in the results. A fixed-price label alone is not conclusive. The agreement as a whole, including acceptance, payment, warranty, termination, and intellectual-property provisions, must be evaluated. No single mandatory phrase establishes eligibility, and ordinary commercial risk is not automatically research risk.
Accuracy-Related Penalties and the Cost of Non-Compliance
The 20% accuracy-related penalties in Phoenix Design Group followed the parties’ stipulation concerning the outcome. The case should not be described as announcing a new automatic penalty for weak research documentation or proving a new IRS enforcement strategy.
More generally, Section 6662 can impose penalties on qualifying underpayments, including those attributable to negligence or a substantial understatement. Applicable defenses, including reasonable cause and good faith under Section 6664(c), require their own analysis. Disallowance of a credit does not automatically resolve every penalty issue.
Future Outlook: Navigating the R&D Credit Landscape
Engineering firms should apply the rules for the relevant tax year and monitor current filing requirements. The Section 174A change affects the expenditure framework for later years, while the need to establish business components, qualified purposes, experimentation, eligible costs, and applicable exclusions remains central.
IRS Review of Research Credit Refund Claims
The IRS publishes specific information requirements for amended-return research-credit refund claims. Firms should consult the applicable Form 6765 instructions and IRS guidance when preparing a submission. The source document’s assertion that a new automated “Classifier” system denies weak claims without human review is unsupported and is not a reliable description of the published requirements.
Strategic Use of the Shrink-Back Rule
Identify business components accurately and retain evidence at the subsystem level where relevant. Apply shrinking back in the regulatory sequence if the original component fails the qualification requirements. Component selection should follow the actual product or process and its evidence, rather than an assumed preference for either a bottom-up or top-down presentation.
Improving Time-Tracking for R&D
A practical recordkeeping approach connects time and expenses to technical records that explain:
- The specific capability, method, or design uncertainty at the outset.
- The alternatives considered and the models, simulations, or tests used to evaluate them.
- The results and how they informed design decisions, including any revisions.
- The scientific or engineering principles applied.
- The employees’ actual qualified services and the basis for allocating their costs.
These are useful substantiation practices rather than mandatory fields for every time entry. Records should be accurate, proportionate to the work, and sufficient to support the claimed credit.
Final Thoughts
Phoenix Design Group demonstrates the risks of relying on broad descriptions of engineering work without establishing the activities required by Section 41. It does not make standard engineering phases inherently ineligible, require advancement of the industry’s common knowledge, or mandate failed experiments.
A supportable claim connects the applicable legal tests with the taxpayer’s actual components, uncertainties, evaluation of alternatives, and eligible costs. Clear technical records, defensible allocations, and careful consideration of exclusions provide a stronger basis for evaluating and substantiating research credits.
