In the dynamic and often opaque world of federal taxation, 2026 presents a landscape characterized by stark contrasts and burgeoning challenges. The Internal Revenue Service, an agency simultaneously grappling with significant legacy issues—including substantial workforce attrition, a bewildering churn of leadership, and a multitude of unfilled senior positions—is paradoxically demonstrating a renewed vigor in enforcement. This isn't accidental; it's a strategic pivot. Despite its internal turbulence, the IRS has shrewdly directed significant Inflation Reduction Act appropriations toward cutting-edge AI-driven risk analytics and the formation of highly specialized audit units. The tangible result? A noticeable escalation in examination activity targeting ultra-high-net-worth individuals, intricate large partnerships, and complex corporate structures.
For any taxpayer whose financial architecture places them within the agency's current enforcement crosshairs, the imperative for 2026 is clear: a sophisticated, highly proactive, and meticulously planned approach to tax controversy is not merely advisable, it is an absolute necessity. Generic compliance is no longer sufficient; strategic foresight is paramount.
The IRS's Strategic Enforcement Vectors for 2026
Despite the aforementioned internal disruptions, the IRS’s examination priorities have remained remarkably consistent and, crucially, have been clearly articulated across various agency communications. This clarity allows for preemptive strategic planning, even as the agency itself navigates operational complexities. Our deep experience advising UHNW families and complex corporate entities indicates that these areas represent not just potential audit triggers but systemic risk exposures if not properly managed.
High-Net-Worth Individuals and Families. The agency's dedicated Private Wealth and Family Office unit continues its focused pursuit of individuals and associated entities whose sheer scale of income and assets inherently suggest advanced tax complexity. The audit triggers are often nuanced, requiring a granular understanding of both statutory provisions and prevailing IRS interpretative positions. Primary focus areas include:
- Material Participation Documentation for Pass-Through Entities: The IRS is rigorously scrutinizing claims of active trade or business engagement, particularly where passive activity loss rules are implicated for losses reported on Schedule E. A paper trail demonstrating actual, continuous, and substantial involvement is critical, moving beyond mere financial investment.
- Passive Loss Characterization and the Real Estate Professional Exception: This area remains a perennial source of contention. The agency meticulously evaluates whether taxpayers genuinely meet the stringent requirements to qualify as real estate professionals, often challenging the aggregation of activities and the adequacy of time logs.
- Charitable Contribution Valuations: Particularly scrutinized are non-cash contributions such as conservation easements, artwork, and interests in closely held businesses. The IRS frequently questions the appraisal methodologies and the underlying economic realities of these donations.
- Travel, Entertainment, and Fringe Benefit Expenses: These deductions, especially those claimed by owner-operators or through corporate entities for personal benefit, are subjected to intense scrutiny regarding substantiation and business purpose.
- Foreign Information Reporting Compliance (FBARs, Forms 5471, 8938): The increasing global financial transparency regime means that any lapse in reporting offshore assets, foreign corporations, or financial accounts is a significant red flag, often triggering severe penalties.
Large Partnerships and Pass-Throughs. Partnerships boasting assets exceeding $10 million are now firmly within the sights of the IRS's Large Partnership Compliance program. The agency has significantly enhanced its capabilities to dissect complex partnership agreements and transactional flows. Specific areas of intense focus include:
- Basis-Inflating Transactions: The IRS is actively seeking out schemes designed to artificially inflate a partner's outside basis, which can lead to unwarranted loss deductions or reduced gain on disposition.
- Tiered Pass-Through Structures: Structures designed to defer income recognition or manipulate character are under severe scrutiny, especially where economic substance appears lacking.
- Economic Substance Questions: The overarching principle here is whether a transaction has a non-tax business purpose and a reasonable expectation of profit independent of tax benefits. This subjective standard empowers the IRS to challenge complex arrangements where the tax tail wags the economic dog.
Cross-Border Transactions. The international tax arena remains a high-stakes domain. Despite broader staffing challenges, the IRS has demonstrably expanded its international enforcement footprint. Transfer pricing, complex treaty positions, and rigorous PFIC/CFC reporting requirements are perennial audit priorities, reflecting the globalized nature of modern commerce and investment.
The Loper Bright Revolution: Re-Calibrating Judicial Deference in Tax Litigation
The Supreme Court’s landmark 2024 decision in Loper Bright Enterprises v. Raimondo delivered a seismic shock to the landscape of administrative law, fundamentally recalibrating the dynamic between federal agencies and the judiciary. By unequivocally overruling the nearly four-decade-old Chevron doctrine, which mandated judicial deference to reasonable agency interpretations of ambiguous statutes, the Court has unleashed profound consequences for tax jurisprudence.
Historically, the IRS, particularly through the Treasury Department's regulatory authority, enjoyed broad deference when its interpretations clarified ambiguous provisions of the Internal Revenue Code. Courts would generally accept such interpretations provided they met a "reasonableness" standard. Under Loper Bright, this protective shield has been largely dismantled. Courts are now compelled to independently scrutinize the statutory text, applying their own legal judgment without the prior interpretive leash of Chevron.
The practical ramification for taxpayers is monumental: those challenging Treasury Regulations or IRS guidance now possess a materially stronger and more equitable position in litigation. Courts are exhibiting a heightened willingness to examine the scope of IRS authority, meticulously evaluating whether regulations genuinely implement congressional intent or, conversely, overreach beyond the statutory grant. This demands a renewed focus on statutory construction and legislative history.
Further bolstering the taxpayer's position is Corner Post, Inc. v. Board of Governors. This decision clarified that the six-year statute of limitations under the Administrative Procedure Act (APA) for challenging agency regulations commences not from the regulation’s promulgation date, but from the date an entity is first subject to the rule. This opens a critical litigation pathway for newer businesses to contest long-standing IRS regulations that might have been immune from challenge under prior interpretations of the APA.
Strategic Implication: This new legal paradigm demands a sophisticated litigation strategy. Taxpayers entangled in controversy must now raise statutory and constitutional arguments earlier, more aggressively, and with greater precision. Furthermore, the selection of the litigation forum—whether the U.S. Tax Court, U.S. District Courts, or the Court of Federal Claims—becomes an even more critical strategic decision, as each forum may exhibit nuanced approaches to deference and offers differing procedural advantages, including jury access in some District Court cases. The era of agency-friendly litigation postures is decidedly over.
The Employee Retention Credit: A Continuing Crisis and the Reckoning
The Employee Retention Credit (ERC), a vital pandemic-era payroll tax relief program, continues to generate an enormous volume of IRS enforcement activity in 2026. However, recent legislative enactments have dramatically elevated the stakes for both claimants and promoters. This isn't merely an audit wave; it's a full-scale reckoning driven by widespread fraud and aggressive, often unsubstantiated, claims.
Under the provisions of the One Big Beautiful Bill Act (OBBBA), the IRS has been mandated to automatically deny all ERC claims for Q3 and Q4 of 2021 that were filed after January 31, 2024, and were still pending at the Act's enactment. This blanket denial, while perhaps expedient for the IRS, creates an immediate and substantial liability for many taxpayers. Compounding this, the assessment period for those quarters has been unilaterally extended to six years, granting the IRS an unusually protracted window to pursue deficiencies and claw back erroneous refunds.
Beyond outright denial, the OBBBA also significantly enhanced penalty regimes:
- Section 6676 Erroneous Refund Penalties now apply to employment tax claims filed after July 4, 2025, imposing severe financial consequences for invalid claims.
- Enhanced Promoter Penalties target those who assisted in filing improper ERC claims after the same date, reflecting the IRS’s determination to curb the proliferation of unscrupulous ERC mills.
Moreover, consistent with the post-Loper Bright jurisprudential shift, courts are increasingly evaluating ERC eligibility based on their own independent statutory interpretation rather than automatically deferring to IRS guidance. This development, while generally empowering taxpayers, cuts both ways: it may provide relief where IRS guidance was unduly restrictive, but it can also expose taxpayers who relied solely on favorable, but statutorily weak, IRS pronouncements.
Employers with any pending ERC claims must, with absolute urgency, map their claim status, understand their protest and refund-suit deadlines, and meticulously prepare documentation built explicitly around statutory eligibility criteria—not merely relying on IRS notices that courts may now choose to disregard. The time for passive waiting is over; aggressive, proactive defense is now the only viable strategy.
The Cannabis Tax Question: Is §280E Still Constitutional?
One of the most consequential and economically impactful open questions in federal tax law revolves around the application of Internal Revenue Code §280E. This provision notoriously denies ordinary and necessary business expense deductions to businesses that "traffic in controlled substances" on Schedule I or II. Its application to state-legal cannabis operations creates a fundamentally unsustainable tax environment, frequently resulting in effective tax rates that bear no resemblance to true economic income.
The crucible for this fundamental challenge is New Mexico Top Organics v. Commissioner, a case currently pending before the U.S. Tax Court. The singular remaining issue is a profound one: can §280E constitutionally apply to a business operating entirely lawfully under state law, particularly at a juncture where the federal government’s own health agencies have formally recommended rescheduling cannabis from Schedule I to Schedule III? This recommendation, coupled with a presidential executive order directing the Attorney General to expedite rescheduling, places §280E’s continued applicability in significant constitutional doubt.
For cannabis businesses, the stakes are nothing short of existential. Section 280E currently prohibits deductions for even the most basic operating expenses—payroll, rent, utilities, marketing—creating a punitive tax burden that stifles growth and profitability. Should the Tax Court, or higher appellate courts, ultimately rule that §280E no longer applies, especially in light of rescheduling efforts, the cash tax and operational structuring implications for the burgeoning cannabis industry would be immediate, dramatic, and overwhelmingly positive. This legal battle represents a critical inflection point for an entire industry.
Expanded Alternative Dispute Resolution: A Strategic Pathway
While the headlines often focus on litigation, not all tax controversies must culminate in protracted court battles. Recognizing the efficiency imperative and the need to manage its own caseload, the IRS has significantly expanded its Alternative Dispute Resolution (ADR) offerings in 2026, introducing meaningful procedural improvements that sophisticated taxpayers can leverage.
- Post-Appeals Mediation (PAM) now offers a crucial "second bite at the apple," allowing for the appointment of a new, neutral mediator for a final settlement attempt even when initial mediation efforts have stalled. This provides an invaluable opportunity to bridge lingering impasses.
- Fast Track Settlement has evolved into a more flexible tool, now available on an issue-by-issue basis. This allows for the resolution of discrete, isolated issues within a broader examination, even if other more contentious matters remain unresolved, thereby narrowing the scope of potential litigation.
- A newly introduced "last chance" Fast Track option is available for certain taxpayers after the issuance of a 30-day letter or a formal protest, providing a final opportunity to settle before the matter proceeds to statutory notice or litigation.
Critically, neither PAM nor Fast Track requests can be denied without first-line executive approval. This institutionalized escalation pathway provides taxpayers with genuine leverage, ensuring that their requests for ADR are given due consideration rather than being summarily dismissed at lower levels.
For taxpayers facing examination, early and strategic engagement with these enhanced ADR programs can often produce faster, less financially onerous resolutions than formal litigation. This is particularly true for disputes where the IRS holds strong positions on some issues but weaker arguments on others, allowing for a targeted, cost-effective resolution strategy.
Taking Decisive Action in a Complex Landscape
The federal tax landscape of 2026 is defined by its complexities: an IRS simultaneously constrained and empowered, judicial doctrines in flux, industry-specific crises, and evolving dispute resolution mechanisms. If you find yourself confronting an IRS examination, facing a proposed deficiency, or navigating the treacherous waters of an ERC dispute, the single most critical step you can take is to immediately engage qualified federal tax counsel.
The strategic choices made during the initial weeks of a tax controversy—from meticulous record preservation and forum selection to the precise framing of arguments and a disciplined evaluation of ADR options—disproportionately shape the ultimate outcome, often more than any subsequent action. In this intricate environment, specialized expertise is not a luxury; it is a fundamental requirement for protecting your assets and your peace of mind.
This article is for informational purposes only and does not constitute legal advice. For tailored guidance specific to your unique tax controversy situation, we invite you to contact Anthony Girand, Esq. to discuss how our firm can assist you.