Pilot models at scale: What George v. Commissioner teaches about the research credit

The US Tax Court’s recent decision in George v. Commissioner, T.C. Memo. 2026-10, addressed the application of the Section 41 research credit to supply qualified research expenses (QREs), focusing on whether chickens used in drug trials can qualify as “supplies.” The case provides useful insight into how courts evaluate technical uncertainty under Section 174 for purposes of the Section 41(d)(1)(A) subtest to qualified research, as well as the process of experimentation requirement under Section 41(d)(1)(C) in determining QREs.

Background

George’s of Missouri, Inc., the taxpayer’s S corporation, raises chickens from hatch to processing and handled the live production side of a large poultry operation. In commercial poultry production, “breeders” are hens that produce eggs while “broilers” are chickens raised for processing and sale. Once hatched, broilers are placed on farms and raised under tightly managed conditions, with producers managing feed composition, vaccines, and medications. To keep flocks healthy and profitable, George’s routinely tested different combinations of drugs, vaccines, feed additives, and the chickens themselves, often across entire flocks in real-world conditions, to evaluate their effectiveness. The dispute in George centered on whether these large-scale, production-level trials to develop a healthier, more uniform chicken qualified the chickens as supply QREs.

The Tax Court’s analysis

The Court examined whether the taxpayer faced the requisite uncertainty with respect to the development of a business component (here, a healthier chicken). In George, vendor testing occurred in controlled, “sterile” environments designed to eliminate external variables, whereas the taxpayer’s operations involved fluctuating temperatures, differing farm conditions, and complex biological interactions that could materially affect outcomes. The Court recognized that successful results in one real-world setting do not necessarily translate to another setting with different production environments, inputs, or biological conditions. As a result, prior success (whether in the lab or in other operational contexts) does not thereby eliminate taxpayer-specific uncertainty as to that setting. Thus, the Court found that taxpayer-specific uncertainty depends on whether the taxpayer faces uncertainty regarding performance under the specific operating conditions at issue.

The Court also addressed the type of trials performed by the taxpayer. The taxpayer did not run controlled lab tests; it raised broilers to full weight under actual production conditions to determine whether treatments worked. The Court found that this real-world testing could satisfy the technical uncertainty standard under Section 174. While additional requirements must be met for property to qualify as a “supply” for research credit purposes, satisfying the Section 174 standard allowed the taxpayer to treat the chickens as pilot models – and thus the chickens themselves, along with feed and other associated costs – as eligible inputs in the QRE analysis. That finding supports the notion that large-scale, production-level testing can qualify as experimentation under Section 174, even where it occurs outside a controlled laboratory setting.

In addition to addressing the Section 174 uncertainty standard, the Court rejected the Internal Revenue Services’ attempt to impose rigid substantiation requirements for the “substantially all” standard under the process of experimentation requirement. The taxpayer did not maintain detailed logs [...]

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IRS roundup: May 1 – May 11, 2026

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for May 1, 2026 – May 11, 2026.

May 1, 2026: The IRS Office of Chief Counsel issued Chief Counsel Advice 202618011, addressing whether a taxpayer can apply a revised cost allocation method under Treasury Regulation § 1.482-9 as a set-off in a transfer pricing context. The guidance concludes that a taxpayer may use a revised allocation key if it is more reliable in tracing costs to the benefits received by controlled affiliates, even if the original method was reasonable.

The Office of Chief Counsel explained that a more granular, two-step allocation method linking costs to specific business divisions before apportioning among entities better reflects arm’s-length pricing than a broad allocation based solely on overall revenue. Accordingly, the IRS accepted the taxpayer’s revised method as a valid set-off under § 1.482-1(g)(4), emphasizing that cost allocations must reasonably align with the economic benefits conferred.

May 4, 2026: The IRS issued Revenue Procedure 2026-22, providing indexed employer shared responsibility payment amounts under § 4980H for 2027. The guidance adjusts the statutory amounts to $3,780 under § 4980H(c) and $5,670 under § 4980H(b), reflecting the applicable premium adjustment percentage.

May 5, 2026: The IRS issued Revenue Procedure 2026-21, establishing a significant issue ruling program under the jurisdiction of the Associate Chief Counsel (Corporate) that allows taxpayers to request letter rulings on discrete legal issues within larger corporate transactions rather than requiring rulings on the entire transaction. The program applies primarily to transactions under §§ 332, 351, 355, 368, and 1036 and is intended to improve efficiency and timeliness of rulings by focusing on issues that are germane, specific, and not clearly resolved under existing authority.

The IRS also released its weekly list of written determinations (e.g., Private Letter Rulings, Technical Advice Memorandums, and Chief Counsel Advice)

Recent court decision

May 4, 2026: In Kadau v. Commissioner, T.C. Memo. 2026-37, the US Tax Court held that a taxpayer’s micro-captive insurance arrangement lacked economic substance under § 7701(o) and sustained 40% accuracy-related penalties under § 6662(i) for nondisclosed noneconomic substance transactions, totaling approximately $174,500 for tax years 2012 to 2015. The Court found that the arrangement failed both prongs of the economic substance test, concluding it did not meaningfully change the taxpayer’s economic position and lacked a substantial non-tax business purpose, finding that the taxpayer engaged in a circular flow of funds and paid excessive, non-arm’s-length premiums.

The court further held that the taxpayer failed to adequately disclose the arrangement, justifying application of the heightened 40% penalty rate.




IRS roundup: April 20 – May 1, 2026

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for April 20, 2026 – May 1, 2026.

April 23, 2026: The IRS has reportedly begun the process of terminating a lead criminal investigation agent involved in probes of Malta pension structures and Puerto Rico’s Act 60 tax incentives, raising concerns about the continuity of those enforcement efforts. The agent was actively pursuing complex cases involving wealthy taxpayers and multinational structures, and his removal comes amid broader IRS workforce reductions and enforcement resource constraints.

The development has prompted questions from practitioners and policymakers about whether enforcement momentum in these areas will slow, even as the IRS continues to signal that investigations into offshore pension arrangements and Puerto Rico tax planning strategies remain ongoing.

April 24, 2026: The IRS Office of Chief Counsel issued Chief Counsel Advice 202617012, addressing when small corporations may qualify for a more liberal application of reasonable cause relief from penalties under § 6038A for failure to file Form 5472. The guidance explains that corporations with gross receipts of $20 million or less may be eligible if they meet specific criteria, including a lack of knowledge of the filing requirements, limited US presence, and prompt compliance once notified by the IRS.

The Office of Chief Counsel clarified that a “liberal” standard means the IRS should apply greater flexibility in evaluating reasonable cause, but taxpayers must still demonstrate good faith and reasonable cause to the satisfaction of the secretary.

April 29, 2026: The IRS published a notice announcing a public hearing on proposed regulations under § 45Z (the Clean Fuel Production Credit). The hearing has been expanded to run May 27 – 29, 2026, beginning at 9:00 am EDT each day. The proposed regulations address credit eligibility, life cycle emissions rates, and certification and registration requirements for clean fuel producers. Individuals seeking to attend the hearing must request access by May 22, 2026.

The IRS also released its weekly list of written determinations (e.g., Private Letter Rulings, Technical Advice Memorandums, and Chief Counsel Advice)

Recent court decisions

April 21, 2026: In Liberty Global, Inc. v. United States, in a split decision, the US Court of Appeals for the Tenth Circuit held that the codified economic substance doctrine under § 7701(o) applied to a taxpayer’s multistep transaction. The Court found that the taxpayer’s transaction structure generated no meaningful economic change and had no substantial non-tax purpose.

April 22, 2026: In Simmons v. Commissioner, T.C. Memo. 2026-34, the US Tax Court sustained the IRS’s deficiency determinations and accuracy-related penalties under § 6662(a), holding that the taxpayer failed to adequately substantiate several business and rental deductions. The Court found that the taxpayer did not meet the strict substantiation requirements of § 274(d) for automobile expenses and provided no evidence supporting claimed food expenses while also disallowing interest deductions under § 163(a) because the taxpayer failed to show that the expenses [...]

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IRS roundup: April 13 – April 17, 2026

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for April 13, 2026 – April 17, 2026.

April 13, 2026: The IRS issued Notice 2026-26, providing updated monthly interest rates for pension funding calculations, including the corporate bond yield curve, spot segment rates under § 417(e)(3), and 24-month average segment rates under § 430(h)(2). The notice also provides the 30-year Treasury rate for March 2026 (4.85%) and related weighted average rates used in determining minimum funding requirements.

April 13, 2026: The IRS issued Revenue Procedure 2026-19, providing updated domestic asset/liability percentages and investment yields used by foreign insurance companies to compute minimum effectively connected net investment income under § 842(b) for 2025. The guidance sets the domestic asset/liability percentages at 128.2% for foreign life insurers and 202.4% for foreign property and casualty insurers, with corresponding domestic investment yields of 2.1% and 2.2%, respectively.

The revenue procedure also provides instructions for calculating estimated tax and installment payments, requiring taxpayers to use these updated percentages and yields when determining minimum effectively connected net investment income and reflects data derived from 2023 tax return information.

April 13, 2026: The IRS issued Revenue Ruling 2026-8, providing updated Standard Industry Fare Level rates and the terminal charge for valuing noncommercial flights on employer-provided aircraft under § 61 and Treasury Regulation § 1.61-21(g). Starting January 1 through June 30, 2026, the ruling sets the terminal charge at $54.48 and establishes mileage rates of $0.2980 (up to 500 miles), $0.2272 (501 to 1,500 miles), and $0.2184 (more than 1,500 miles), which are used to calculate the taxable value of this fringe benefit.

April 16, 2026: The IRS issued Revenue Ruling 2026-9, providing monthly applicable federal rates (AFRs) for May 2026, including short-, mid-, and long-term rates under § 1274, as well as adjusted AFRs, § 382 rates, and low-income housing credit percentages. The ruling also sets the § 7520 rate at 5.00% for determining present value calculations.

The IRS also released its weekly list of written determinations (e.g., Private Letter Rulings, Technical Advice Memorandums, and Chief Counsel Advice)

Recent court decision

April 15, 2026: A federal district court in Texas held that the IRS exceeded its statutory authority in designating certain micro-captive insurance arrangements as “listed transactions” under § 6707A, finding that the agency failed to demonstrate that such transactions are presumptively tax-avoidant. Relying on Loper Bright, the court emphasized that it must exercise independent judgment in determining the limits of the IRS’s statutory authority, rejecting any deference to the agency’s interpretation and focusing on whether the regulations fell within the outer bounds of Congress’s delegation. The court concluded that § 6707A requires a meaningful distinction between transactions that merely have the potential for abuse and those that are more likely than not tax-avoidant and found that the administrative record did not support the heightened standard required for listed transactions. The court therefore declared Treasury [...]

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IRS roundup April 1 – April 9, 2026

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for April 1, 2026 – April 9, 2026.

April 3, 2026: The White House proposed significant budget cuts to the Treasury Inspector General for Tax Administration (TIGTA), reducing its funding by nearly 17% for fiscal year 2027 to the lowest level since 2007. TIGTA warned that the cuts, combined with recent staffing losses, could lead to a 35% reduction in oversight activities at a time when risks at the IRS are increasing and have already forced the watchdog to cancel dozens of audits and reviews.

The proposal comes alongside broader reductions to IRS funding and staffing, including cuts to enforcement resources, raising concerns among practitioners that diminished oversight could weaken accountability and tax administration – particularly as the IRS undergoes workforce reductions and expands its use of new technologies, such as artificial intelligence.

April 6, 2026: Taxpayers are urging the Supreme Court of the United States to consider whether the Seventh Amendment guarantees a right to a jury trial for IRS civil penalties in Hirsch v. US Tax Court, arguing that the Court’s 2024 decision in SEC v. Jarkesy should apply in the tax context. Hirsch arises from fraud penalties exceeding $15 million that were assessed against taxpayers who allegedly misrepresented US Virgin Islands residency. A ruling in the plaintiffs’ favor could significantly alter IRS enforcement by making penalties harder to impose and potentially slowing audits and collections.

To date, courts have largely rejected similar arguments, relying on the “public rights” doctrine and long-standing precedent treating tax penalties as remedial rather than punitive, but practitioners note that the issue is gaining traction. If the Supreme Court requires jury trials for certain tax penalties, it could reshape the balance between taxpayers and the IRS, particularly for high-dollar cases, while raising concerns about reduced deterrence and increased administrative burdens on the agency.

April 6, 2026: The IRS issued Revenue Procedure 2026-14, providing guidance for states to nominate population census tracts for designation as qualified opportunity zones, effective January 1, 2027, under §§ 1400Z-1 and 1400Z-2, as amended by the One Big Beautiful Bill Act. The revenue procedure outlines eligibility requirements for low-income communities, limits designations to 25% of eligible tracts per state, and establishes deadlines for nominations and US Department of the Treasury certification.

The IRS also released its weekly list of written determinations (e.g., Private Letter Rulings, Technical Advice Memorandums, and Chief Counsel Advice).

Proposed changes to the Voluntary Disclosure Program (VDP)

April 6, 2026: The IRS proposed updates to VDP that would replace the one-time 75% civil fraud penalty with 20% accuracy-related penalties applied annually over the six-year disclosure period while also imposing a new requirement that taxpayers pay all taxes, penalties, and interest and file all required returns within 90 days of conditional acceptance. Practitioners generally support the move away from the 75% penalty but warn that the cumulative penalties (along [...]

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