The federal research and development (R&D) tax credit under Internal Revenue Code Section 41 rewards qualifying research, subject to statutory exclusions and substantiation requirements. This study examines the documentation, experimentation, and contractual issues raised by research-credit disputes, including Phoenix Design Group, Inc. v. Commissioner, T.C. Memo. 2024-113. It distinguishes established requirements from unsupported assertions about a new judicial standard.
The Statutory Nexus: Interplay Between Research Deductions and Section 41
Historically, Section 41 referred to expenditures eligible for treatment under Section 174. The Tax Cuts and Jobs Act generally required capitalization of specified research or experimental expenditures for tax years beginning in 2022 through 2024, with five-year domestic and fifteen-year foreign amortization beginning at the midpoint of the expenditure year.
Public Law 119-21 changed this framework. For tax years beginning after December 31, 2024, Section 174A generally permits immediate deductions for domestic research or experimental expenditures, with an alternative capitalization election. Section 41 now refers to Section 174A. Foreign research expenditures generally remain subject to fifteen-year amortization under Section 174 and are excluded from the credit. Transition rules address previously capitalized domestic costs; their application depends on the taxpayer and applicable elections.
The deduction and credit rules have different scopes. A research expense can qualify for deduction or amortization without qualifying for the credit. Credit disallowance does not, by itself, establish that the corresponding deduction is improper.
Comparative Framework of Research Expenditures
The original table headings are retained below. “Section 174 (SRE) Status” describes the historical category; domestic expenditures for tax years beginning after 2024 are generally governed by Section 174A. Inclusion always depends on the activity, cost allocation, and applicable tax-year rules.
| Expenditure Type | Section 174 (SRE) Status | Section 41 (QRE) Status | Amortization Treatment |
|---|---|---|---|
| Direct Research Wages (W-2 Box 1) | Research-related compensation generally included | Qualifying wages for research, direct supervision, or direct support; not automatically all Box 1 wages | Domestic timing described below |
| Employee Fringe Benefits | Research-related benefits may be included | Generally excluded unless included in statutory qualifying wages | Domestic timing described below |
| Research Supplies and Materials | Research-related costs generally included | Qualifying supplies; excludes land and depreciable property | Domestic timing described below |
| Cloud Computing/Computer Rental | Research-related costs may be included | Only eligible computer-use costs meeting the statutory and regulatory conditions; not all cloud services | Domestic timing described below |
| Domestic Contract Research | Eligible contract costs may be included without the credit’s standard percentage limitation | Generally 65% of eligible payments; special rates can apply | Domestic timing described below |
| Foreign Research Wages/Contracts | Qualifying foreign research costs included | Excluded | Generally fifteen years, using the midpoint convention |
| Overhead and Indirect Costs (G&A) | Only properly attributable research costs; not blanket inclusion of all G&A | General overhead excluded; separately qualifying costs require their own analysis | Domestic timing described below |
| Patent and Legal Fees | Costs incident to obtaining a patent may qualify; unrelated legal costs do not automatically qualify | Patent and legal services generally excluded | Domestic timing described below |
Domestic timing: the former five-year capitalization regime generally applied to tax years beginning in 2022–2024, subject to subsequent transition relief. For tax years beginning after 2024, qualifying domestic expenditures generally may be deducted under Section 174A; an elective amortization method is available. These timing rules do not determine credit eligibility.
Clarifying the Tiedemann Attribution and the Uncertainty Standard
The supplied draft attributes an 80% experimentation ruling and an IRS “Classifier” decision to Tiedemann v. Commissioner without an identifiable opinion citation or docket number. The cited article instead discusses Little Sandy Coal, Phoenix Design Group, and Meyer, Borgman & Johnson. The claimed Tiedemann holdings could not be verified and should not be treated as established precedent.
The underlying uncertainty requirement is established in the research regulations. The relevant question is whether available information establishes the capability, method, or appropriate design of the product. An unfinished design or ordinary commercial challenge does not alone establish qualifying uncertainty. It is useful to document the technical unknowns when research begins, but the regulations do not create a universal requirement for a formally approved, pre-project uncertainty document.
The Role of IRS Refund-Claim Review
Research-credit refund claims are subject to procedural validity requirements as well as substantive examination. Taxpayers should supply the required business-component, activity, and expense information when submitting a claim and retain supporting records. Administrative screening does not establish that every claim is decided by an automated system. No verified evidence supports the draft’s assertion that a Classifier system denied a Tiedemann claim or made later substantiation legally unavailable.
Deconstructing the Four-Part Test
Section 41 requires qualifying research expenditure treatment, technological information, a connection to a new or improved business component, and a qualifying process of experimentation. The requirements apply separately to business components and must be considered alongside statutory exclusions.
The Research Expenditure Test: Elimination of Uncertainty
The activity must address uncertainty concerning development or improvement. The historical Section 174 framework remains relevant to the older tax years at issue in litigation; current domestic expenditure treatment must account for Section 174A. Research deductions cover a broader range of costs than the credit.
The Technological in Nature Test
The experimentation must fundamentally rely on physical or biological sciences, engineering, or computer science. Existing technologies may be used. There is no general requirement to advance knowledge throughout an industry or invent a technology previously unknown to the world.
The Business Component Test
A business component can be a product, process, software, technique, formula, or invention held for sale, lease, license, or use in the taxpayer’s trade or business. The intended improvement must concern function, performance, reliability, or quality; purely aesthetic or stylistic changes do not satisfy the qualified-purpose requirement.
The Process of Experimentation Test
A qualifying process identifies uncertainty, identifies alternatives, and evaluates those alternatives through methods such as modeling, simulation, or systematic trial and error. Revisions and calculations alone do not prove experimentation. The substantially-all threshold is generally 80%, measured on a consistent, reasonable basis under the regulations.
The Phoenix Design Group Case Study
In Phoenix Design Group, T.C. Memo. 2024-113, the Tax Court examined mechanical, electrical, plumbing, and fire-protection engineering activities. The taxpayer failed to establish qualifying research for the trial projects. Its general design workflow and timesheets did not adequately demonstrate the uncertainty and investigative activities claimed. The decision does not exclude engineering services as an industry.
Analysis of Project Failures in Phoenix Design Group
| Project Element | Judicial Finding | Reason for Disqualification |
|---|---|---|
| MEPF Design | Qualifying uncertainty not established | Potential design revisions did not prove technical uncertainty. |
| Calculations | Investigative activity not demonstrated | Calculations using available information did not establish experimentation. |
| Iterative Changes | Design workflow insufficient | Iterations did not themselves demonstrate evaluation of technical alternatives. |
| Documentation | Evidence insufficient | Timesheets and descriptions did not substantiate the claimed research. |
| Penalties | Separate, fact-dependent issue | Credit disallowance does not automatically establish a penalty in another case. |
The court considered shrinking back to engineering subsystems, but not merely to design phases or particular employees. Its analysis illustrates why a narrower claim still needs evidence supporting the relevant component.
Funded Research and the Allocation of Economic Risk
Section 41 excludes research to the extent funded by another person. For a research provider, the analysis considers whether payment depends on successful research and whether the provider retains substantial rights in the results. Contract labels alone do not settle either question.
The Economic Risk Analysis in Recent Rulings
The Smith proceedings, Docket Nos. 13382-17, 13385-17, and 13387-17, and System Technologies, Inc., Docket No. 12211-21, illustrate the importance of contract interpretation and governing law. The procedural rulings discussed in January 2025 commentary should not be characterized as final victories establishing entitlement to all claimed credits.
In Smith, unresolved issues involving the agreements and foreign law prevented summary judgment for the IRS. In System Technologies, the court rejected the IRS’s funded-research position on its partial-summary-judgment motion: Indiana law preserved remedies, including refunds, for a total breach despite the contractual warranty provisions. This supported treating payment as contingent on successful research. The two rulings should not be reduced to an identical finding of disputed facts.
The Substantial Rights Requirement
Retaining substantial rights does not necessarily require exclusive ownership, but incidental knowledge gained from an engagement is insufficient. Work-made-for-hire and ownership clauses must be read with licenses, restrictions, and the rest of the agreement. The draft’s specific characterizations of Tangel and Grigsby are not necessary to establish this rule and are not relied on here.
Comparison of Rights and Risk in Research Contracts
The retained column headings describe indicators only. A “Low-Risk (Qualified)” entry does not establish qualification.
| Contractual Feature | High-Risk (Funded) | Low-Risk (Qualified) |
|---|---|---|
| Payment Terms | Payment assured regardless of research success | Payment genuinely contingent on success; a fixed fee alone proves neither result |
| Ownership | All substantial rights transferred | Meaningful retained rights, subject to the complete agreement |
| Warranty/Remedy | Provider entitled to payment despite failure | Enforceable remedies expose the provider to loss of compensation on failure |
| Rights to Exploit | No substantial right to use results | Substantial usable rights beyond incidental experience |
Implications for Future R&D Tax Credit Claims
A defensible claim connects the technical work, the relevant business component, and the claimed expenses. Taxpayers should reconcile the credit calculation with payroll and accounting records and distinguish the credit analysis from deduction timing.
Documentation Linked to Activities
Useful evidence includes engineering notes, design versions, test results, technical meeting records, and support for employee allocations. These materials should explain what was uncertain, which alternatives were evaluated, and how claimed costs relate to that work. A particular time-tracking system or a separate narrative for every claimed hour is not universally mandated.
Defining Uncertainty at the Outset
Recording technical unknowns early reduces reliance on memory. Update the record when an uncertainty arises, changes, or is resolved. A project-stage checkpoint can be a useful internal practice, but it does not guarantee credit eligibility and should not be presented as a newly established Tiedemann requirement.
Routine Activities and the 80% Threshold
The experimentation percentage is not a blanket test of every administrative and commercial activity in a project. Taxpayers must identify the appropriate business component and apply the regulatory measurement rules. They cannot manufacture compliance by deleting unfavorable activities from the denominator. Where appropriate, the shrinking-back rule permits consideration of qualifying subsets.
Industry-Specific Considerations: Engineering and Software
Building-code compliance neither proves nor automatically defeats qualifying research. Engineering claims need evidence of the actual technical uncertainty and evaluation performed. Similarly, routine coding or testing is not automatically qualifying experimentation. Certain internal-use software must also satisfy additional requirements, subject to regulatory exceptions.
Administrative and Regulatory Developments
Revisions to Form 6765
The December 2025 instructions make Section G business-component information optional for tax years beginning before 2026 and generally required for tax years beginning after 2025, subject to specified exceptions. Refund claims have additional information requirements. The form’s business-component disclosure rules are distinct from the substantive 80% experimentation test.
Notice 2023-63, Notice 2024-12, and Research Expenditure Treatment
Notice 2023-63 provided interim guidance for the post-TCJA capitalization regime. Notice 2024-12 clarified research-provider treatment, including circumstances involving financial risk and rights in the resulting research product. A provider’s lack of exploitation rights does not by itself resolve expenditure treatment where the provider bears financial risk. The notices should not be treated as an automatic Section 41 disqualification rule. Their application must also account for the tax year and the later enactment of Section 174A.
Strategic Recommendations for Taxpayers
Review technical eligibility, cost support, contractual rights, and deduction treatment before filing. Section 6662 can impose a 20% accuracy-related penalty on an underpayment attributable to specified grounds, including negligence or a substantial understatement. Penalties are not automatic whenever a credit is denied. Section 6664’s reasonable-cause and good-faith provisions may apply, depending on the circumstances.
Implement a Systematic Experimentation Framework
- Describe the technical problem and information unavailable when the relevant research began.
- Record alternatives and how they were evaluated, including unsuccessful approaches where relevant.
- Retain modeling, simulation, testing, or trial-and-error evidence connected to the claimed work.
- Support cost allocations with records and explanations that can be checked against the underlying accounts.
Contractual Alignment
- Review payment, acceptance, ownership, licensing, warranty, and termination provisions together.
- Consider the governing law and the parties’ enforceable rights and obligations.
- Ensure any retained research rights are meaningful and consistent with the commercial agreement.
- Do not assume removing work-made-for-hire wording or adding milestone labels creates eligibility.
Utilization of the Shrinking-Back Rule
If the overall business component fails the research tests, assess appropriate subsets in the prescribed sequence and document the activities and costs for each claimed subset. A design phase, an employee, or an arbitrary grouping of favorable tasks is not necessarily a business-component subset.
