Harper v. Commissioner

The United States federal research and development (R&D) tax credit, codified under Internal Revenue Code (IRC) Section 41, has entered a period of profound judicial and regulatory transformation. For decades, the credit served as a primary fiscal incentive for technological innovation, yet its application within "non-traditional" industries such as architecture, engineering, and construction (AEC) remained a flashpoint for conflict between taxpayers and the Internal Revenue Service (IRS). The litigation involving Jeffrey A. and Katherine M. Harper, spanning both the United States Court of Appeals for the Ninth Circuit and the United States Tax Court, represents perhaps the most significant modern examination of the procedural and substantive boundaries of this incentive. Through the lens of Harper v. United States (847 Fed. App’x 408) and Harper v. Commissioner (T.C. Memo. 2023-57), the courts have addressed the fundamental tension between the IRS’s desire for rigid documentation—the "specificity requirement"—and the statutory reality of what constitutes a "business component" and "qualified research".

The Statutory Architecture of Section 41 and the Four-Part Test

To appreciate the significance of the Harper decisions, one must contextualize them within the rigorous framework of the "four-part test" established by Section 41(d). For any activity to qualify for the R&D tax credit, it must surmount four distinct legal hurdles, each of which serves to distinguish genuine innovation from routine commercial activity. The interplay of these tests dictates the eligibility of project-based expenditures, particularly in the design-build sector where the lines between "routine construction" and "experimental engineering" are frequently blurred.

The Harper litigation primarily focused on the third pillar—the business component test—and the fourth pillar—the process of experimentation—while simultaneously grappling with the procedural mechanics of how such claims are filed and audited.

Procedural Resilience: The Ninth Circuit and the Specificity Waiver

The first major milestone in the Harper saga occurred not in the Tax Court but in the Ninth Circuit Court of Appeals, addressing the jurisdictional validity of refund claims. Jeffrey Harper, as the sole shareholder of Harper Construction Co. (HCC), filed amended tax returns for the 2008 and 2010 tax years to claim R&D credits. The IRS conducted a substantive audit lasting more than four years, during which HCC provided over 100,000 pages of documentary support. However, upon the filing of a refund suit in district court, the IRS moved to dismiss the claim, asserting that the original amended returns failed the "specificity requirement" under Treasury Regulation § 301.6402-2(b)(1).

This regulation mandates that a refund claim must "set forth in detail each ground upon which a credit or refund is claimed and facts sufficient to apprise the Commissioner of the exact basis thereof". The district court initially sided with the IRS, concluding that the lack of upfront detail deprived the court of jurisdiction. However, the Ninth Circuit reversed this decision, establishing the "doctrine of waiver" as a potent defense for taxpayers.

The Ninth Circuit held that the IRS cannot retroactively assert a lack of specificity if it has already conducted a substantive examination and issued a final denial on the merits. Citing the Supreme Court precedent in Angelus Milling Co. v. Commissioner, the court determined that the IRS’s four-year audit constituted an "unmistakable" showing that the agency had dispensed with formal requirements and examined the merits of the claim. This ruling underscored a critical protection for taxpayers: once the government engages with the substance of a claim, it waives procedural objections related to the form of the initial filing.

Despite this victory, the Ninth Circuit’s decision served as a double-edged sword. While it protected the Harpers, it alerted the IRS to a procedural loophole that the agency has since moved to close through formalized disclosure standards, such as Chief Counsel Memo 20214101F, which now requires extensive project-level detail at the time a refund claim is filed.

Substantive Analysis: T.C. Memo. 2023-57 and the Construction Context

Following the procedural resolution, the focus shifted to the United States Tax Court, where Judge Copeland presided over Jeffrey A. Harper and Katherine M. Harper v. Commissioner. The dispute centered on claims for the 2012 and 2013 tax years, totaling approximately $825,266 in credits related to the activities of HCC, a design-build firm specializing in military and complex industrial projects.

The IRS moved for partial summary judgment, arguing that as a matter of law, HCC’s construction designs could not meet the definition of a "business component". The government’s position rested on four primary contentions: that designs are services rather than products; that HCC did not own the buildings; that the designs were not held for sale; and that the designs were not used in a "meaningful" or "habitual" way by the taxpayer.

The Rejection of the "Product" Narrowness

A central theme in the IRS's argument was that because buildings are owned by the client and Section 41 does not explicitly list "designs" as a business component, the research was ineligible. The Tax Court rejected this narrow interpretation. Judge Copeland noted that while a design might not be a "product" in the traditional sense of a retail commodity, it qualifies as a "process, technique, or invention". The court validated that design-build firms engage in technical research to develop the very processes and techniques they use to fulfill their contracts.

The Interpretation of "Use" and "Trade or Business"

The IRS attempted to impose a "habitual availment" standard for the use of a business component, arguing that a design for a specific aircraft hangar did not change HCC's day-to-day operations and thus was not "used" in the taxpayer’s business. The court disagreed, clarifying that the statutory language requires only that the component be "used by the taxpayer in a trade or business". Applying a unique design or technical solution to a single project constitutes sufficient "use" under the law.

The court’s denial of summary judgment was a watershed moment for the AEC industry. It essentially signaled that the IRS could no longer use the "business component" test as a categorical shield against architectural and engineering claims.

The Project-Based Reality: HCC’s Research Activities

The Tax Court’s analysis of HCC’s 53 projects during the years in question—ranging from aircraft hangars and military barracks to college buildings and medical clinics—revealed a complex multi-stage development cycle that mirrors the "process of experimentation" required by the law.

HCC’s workflow, as detailed in the record, consists of five key stages:

• Job Bid: Initial assessment of technical requirements and site constraints.
• Conceptual Design: Formulating novel architectural and engineering approaches to meet client-specific functional needs.
• Design Development: Iterative modeling and calculation to resolve structural and technical uncertainties.
• Documentation: Creating technical specifications, 3D models (BIM), and blueprints that embody the research results.
• Construction/Close-out: Implementing the designs, which may include LEED project analysis and green building reviews to ensure performance standards.

The court found that HCC "evidently engaged in a lengthy, multistep process of conceptual design and design development for each project, resulting in novel ideas and iterative improvements". This finding is critical because it acknowledges that the "uncertainty" resolved through research does not need to be a revolutionary breakthrough in basic science; rather, it can be the "appropriate design" of a functional structure within the constraints of engineering physics.

Comparative Jurisprudence: Little Sandy Coal and the Documentation Burden

While Harper provided a qualitative victory for AEC firms, the Seventh Circuit’s decision in Little Sandy Coal Co. v. Commissioner (62 F.4th 287) highlighted the quantitative dangers of inadequate documentation. The two cases together establish the modern "pincer" of R&D tax credit compliance: Harper defines what can qualify, while Little Sandy Coal dictates how you must prove it.

In Little Sandy Coal, a shipbuilding firm failed to prove that at least 80% of its activities—the "substantially all" requirement—constituted elements of a process of experimentation. The taxpayer relied on high-level estimates and subjective testimony rather than a "principled breakdown" of employee time mapped to specific experimentation tasks.

The 7th Circuit in Little Sandy Coal clarified that while direct support and supervision activities can be included in the numerator of the 80% fraction, they are only eligible if the taxpayer provides a clear nexus between the support and the experimentation. For construction firms following Harper, this means they must not only show that they designed a building (qualifying the business component) but also document that 80% of the claimed wages were spent evaluating alternatives and resolving uncertainties at the sub-component level (satisfying the process of experimentation).

Contractual Risk and the "Funded Research" Obstacle

The implications of Harper extend beyond the 4-part test to the "funded research" exclusion under Section 41(d)(4)(H). The IRS frequently argues that AEC firms are "hired to perform" and thus are paid regardless of whether their research is successful, meaning the research is "funded" by the client.

Two recent cases, AS+GG and System Technologies, further illustrate this battleground. In AS+GG, the Tax Court denied the IRS summary judgment because the contracts provided that payment was contingent on satisfying design milestones. Similarly, in System Technologies, the court found that under Indiana state law, a buyer could recover payments if research failed, meaning the researcher bore the economic risk.

For design-builders like HCC, the contractual framework is paramount. The court’s willingness to allow these claims signifies that a fixed-price contract, where the firm must deliver a functional design within a set budget, generally places the "risk of failure" on the taxpayer, thereby avoiding the funded research exclusion.

The New Regulatory Landscape: Chief Counsel Memo 20214101F and Form 6765

The most tangible implication of the Harper decisions for future R&D applications is the IRS’s dramatic shift toward standardized front-end disclosure. The "victory" in the 9th Circuit regarding specificity waiver prompted the IRS to issue Chief Counsel Memorandum 20214101F, which established a "minimum level of factual detail" required for a valid refund claim.

This memorandum, along with the recent updates to Form 6765, requires taxpayers to disclose for each business component:

• All research activities performed during the claim year.
• All individuals who performed each research activity.
• The specific information each individual sought to discover.
• A detailed breakdown of wages, supplies, and contract research costs per business component.

This "project-by-project" reporting requirement effectively codifies the "shrinking-back rule" into the filing process. Taxpayers can no longer aggregate an entire year of "engineering time" into a single bucket; they must articulate the technological uncertainty and process of experimentation for each project (up to 50 significant business components on Section G of the new Form 6765).

Section 174 Amortization and the Financial Ripple Effects

The implications of Harper are also intertwined with the mandatory capitalization of research expenditures under Section 174, as introduced by the Tax Cuts and Jobs Act (TCJA). For tax years beginning after 2021, costs that qualify for the R&D credit (QREs) must be capitalized and amortized over five years (domestic) or fifteen years (foreign).

This change has created a paradoxical situation for construction firms. While Harper makes it easier to claim that a design is a business component, that same qualification forces the firm to capitalize the related costs. If a firm identifies an activity as "qualified research" to get the 10% credit, it must also identify those same costs as "specified research expenditures" (SREs), which delays the 21% tax deduction over five years.

The Harper decision confirms that design firms have SREs, which necessitates a sophisticated allocation protocol to separate research costs from routine production costs.

Future Audit Strategies: Defending the AEC Claim Post-Harper

The Harper ruling provides the AEC industry with a powerful set of precedents to defend against IRS audits. However, the strategy must be proactive rather than reactive. Auditors have transitioned from arguing "you don't qualify" to arguing "you haven't proven 80% of your time was experimentation".

1. The Narrative of Iterative Improvement

Successful applications must now reflect the "lengthy, multistep process" cited by Judge Copeland. This involves documenting the "failed" iterations. In the AEC world, showing a 3D model with structural clashes that were later resolved through re-engineering is the ultimate proof of a process of experimentation.

2. Eliminating the "Routine Service" Label

The IRS often labels architectural services as "routine" or "standard professional practice". The Harper decision allows firms to counter this by demonstrating that meeting a unique client specification requires solving technical uncertainties that are not addressed in standard building codes or manuals.

3. Leveraging the Ninth Circuit Waiver Doctrine

For taxpayers facing long-term audits on older refund claims, the Ninth Circuit’s procedural victory remains a potent shield. If the IRS has examined 100,000 pages of data and interviewed engineers, it cannot legally revert to a "specificity" dismissal if it fails to find a merit-based reason to deny the credit.

Nuanced Conclusions and Industry Outlook

The litigation in Harper v. Commissioner has fundamentally altered the R&D tax credit landscape in the United States. It has validated that innovation is not the exclusive domain of white-lab-coat scientists but is equally present in the dusty drafting rooms of design-build firms and the iterative modeling of structural engineers. The Tax Court’s refusal to allow the IRS to redefine statutory terms like "use" and "product" according to a narrow, habitual standard ensures that the credit remains a viable incentive for project-based businesses.

However, the "new era of disclosure" initiated by the Ninth Circuit’s procedural battle and the IRS’s subsequent regulatory response demands a level of documentation density previously unseen in the AEC sector. Future R&D tax credit applications must be built upon a modular, sub-component-based foundation, where every claimed dollar is tied to a specific technological uncertainty and a systematic process of evaluation.

For construction and engineering firms, the takeaway from Harper is clear: eligibility is broad, but the burden of proof is deep. Firms that embed R&D tracking into their project management workflows—documenting why a design was changed, how a simulation resolved a clash, and which engineers worked on specific sub-level uncertainties—will be well-positioned to claim and defend significant tax benefits in 2025 and beyond. The Harper case serves as both a shield against bureaucratic overreach and a roadmap for the high-standard substantiation that is now the mandatory price of entry for federal innovation incentives.