By Lina Irawan 
The 2026 tax season concluded under a cloud of conflicting narratives, with the Internal Revenue Service declaring a "successful" operational period despite an unprecedented reduction in its workforce. This assertion, however, stands in stark contrast to the dire warnings issued by seasoned tax administration experts who foresee profound, long-term repercussions from the drastic cuts orchestrated by Elon Musk’s controversial Department of Government Efficiency (DOGE). The agency, tasked with the monumental responsibility of collecting the nation’s revenue, processed 140.2 million individual returns and disbursed over 90.4 million refunds, figures that represent a marginal decrease from the preceding year. While the immediate statistics might suggest resilience, critics argue that the true cost of these efficiency measures will only become apparent years down the line, potentially eroding the very foundations of America’s tax system.
The genesis of this dramatic transformation lies in the mandate of DOGE, an initiative championed by Elon Musk with the stated goal of streamlining federal operations. In early 2025, DOGE targeted the IRS, a federal agency often criticized for its perceived inefficiencies and technological stagnation. The result was a staggering reduction of over 25,000 personnel from a workforce that had traditionally hovered around 100,000 employees. This massive layoff, executed in waves starting in February 2025, sent shockwaves through the agency and the broader federal landscape. Proponents of the cuts, largely aligned with a philosophy of lean government and tech-driven optimization, argued that the IRS was bloated and ripe for modernization, and that a smaller, more agile workforce, complemented by advanced technology, could perform its duties more effectively.
For its part, the IRS presented a confident front. An agency spokesperson told Fortune that "Contrary to claims from critics, the IRS delivered a historic, successful 2026 filing season efficiently processing returns and issuing average refunds that were 11 percent higher than last year as Americans benefited from the President’s Working Families Tax Cuts." This statement highlighted not only the agency’s operational capacity post-cuts but also credited a hypothetical new tax policy for increased refund amounts, suggesting a positive economic impact for taxpayers. IRS Chief Executive Officer Frank Bisignano, who took the helm with a mandate for modernization, reportedly remains "committed to maintaining the right workforce to deliver the world-class service American taxpayers deserve," even as the agency projects ending 2026 with approximately 74,000 employees, roughly the same level as at the close of 2025. This stability, however, is merely a plateau after a precipitous drop, raising questions about the actual "right workforce" level required for its complex mission.
The Veteran’s Warning: Douglas O’Donnell on the Long Game
Among the most vocal and credible critics is Douglas O’Donnell, whose illustrious career at the IRS spanned nearly four decades, from 1986 until his departure in 2025. O’Donnell twice served as acting Commissioner, from November 2022 to March 2023 and again from January to February 2025, providing him with a profound, insider perspective on the agency’s intricate workings and systemic challenges. Now a senior managing director in the KPMG Washington National Tax practice, his concerns are not rooted in political partisanship but in a deep understanding of tax administration.
O’Donnell’s primary apprehension is that DOGE’s extensive cuts, coupled with an already shrinking agency budget, will not manifest as immediate failures but rather as a gradual degradation of the IRS’s capacity over time. "I’ve been very concerned with the ability of the agency to carry out on its mission, whether it’s at the services level or enforcement level, but also just in general to be a functioning federal government agency going forward," he told Fortune. He emphasized that while the 2026 season might appear stable, the true impacts on taxpayer service, compliance, and enforcement capabilities are likely to accumulate, leading to a less effective and less trusted tax system in the years to come. The agency’s headcount, though stabilized at 74,000 for the end of 2026, represents a significant reduction from its pre-DOGE strength, leaving a void in institutional knowledge and operational capacity.
Beyond DOGE: A Legacy of Underinvestment and Modernization Hurdles
Crucially, O’Donnell is quick to clarify that the IRS’s fundamental problems did not originate with DOGE or the preceding administration. He highlights a systemic issue of chronic underinvestment and a persistent lag in modernization efforts that predate the recent cuts by decades. For years, the IRS has struggled to keep pace with technological advancements seen in tax agencies of other developed nations, and even in the private sector. This stagnation has led to inefficiencies, increased operational costs, and a suboptimal experience for taxpayers.
A prime example of this enduring challenge is the agency’s decades-long battle to go paperless. Despite efforts spanning "nearly four decades," paper tax returns continue to represent a disproportionate burden on the IRS. According to a February 2026 report from the Treasury Inspector General for Tax Administration (TIGTA), paper returns constitute a mere 6% of all submissions but account for a staggering 72% of the agency’s processing costs. This stark disparity underscores the inefficiency inherent in relying on outdated manual processes. The IRS has ambitious plans to slash the expense of paper processing from $450 million to less than $20 million by 2029, a goal that has been repeatedly articulated but often sputtered in execution. O’Donnell noted, "It was clear that there had been underinvestment for a number of years across multiple administrations. So it’s not pointing any fingers here." This historical context is vital, as it frames the DOGE cuts not as the sole cause of IRS woes, but as an exacerbation of existing vulnerabilities.
The IRA’s Promise Interrupted: A Brief Window of Hope
A significant attempt to rectify these long-standing issues came with the 2022 Inflation Reduction Act (IRA). This landmark legislation included an unprecedented $80 billion infusion specifically earmarked for the IRS, intended to transform it into a "modern tax administration." The strategic plan encompassed several critical areas: upgrading antiquated technology infrastructure, enhancing data security, improving taxpayer and employee access to information, and crucially, rebuilding the agency’s workforce. The funds were designed to enable the IRS to hire and retain highly skilled workers through targeted recruitment campaigns, offer competitive salaries, and provide more flexible work opportunities to attract top talent in a competitive labor market. The vision was clear: to create an IRS capable of delivering efficient service, robust enforcement, and secure operations for the 21st century.
However, O’Donnell argues that the progress spurred by the IRA was not merely stalled but actively "reversed" by the DOGE cuts. The first wave of personnel reductions in February 2025, followed by subsequent layoffs, meant that the very human capital needed to implement technological overhauls and strategic hiring initiatives was stripped away. Modernization is not simply about buying new software; it requires skilled personnel to integrate systems, train staff, manage projects, and provide user support. With a significantly diminished workforce, the IRS’s capacity to execute the IRA’s ambitious modernization agenda was severely compromised.
Efficiency or Erosion? Frank Bisignano’s Vision and the IT Cuts
In stark contrast to O’Donnell’s concerns, IRS CEO Frank Bisignano presented a more optimistic outlook in his April testimony before the Senate Finance Committee. Bisignano claimed substantial efficiency gains, stating, "We have successfully cut $2 billion from the IRS information technology budget without any operational disruptions. We achieved these cost savings by renegotiating, scaling back, and in some cases eliminating, wasteful IT and professional services contracts." While on the surface, cutting "wasteful" contracts seems prudent, the long-term implications of such aggressive IT budget reductions are a subject of intense debate. Critics question whether these cuts will truly lead to sustained efficiency or if they will merely defer necessary investments, ultimately leading to greater costs and technological vulnerabilities down the line. Cutting "professional services contracts," for instance, might mean foregoing external expertise crucial for complex system overhauls or cybersecurity enhancements, potentially leaving the agency more exposed to future challenges.
The Paradox of Automation: Why Less Can Be More (Initially)
A key point of contention for O’Donnell revolves around the intended objectives of DOGE. "It’s hard to know exactly what the objective of DOGE was. I’ll just say that. I’m not completely sure because there’s really no strategic document that’s out there. The focus seemed to be cutting in the enforcement space and the technology space, but maintaining the service levels as much as possible," he observed. This seemingly contradictory goal – cutting technology staff while expecting technological improvements to maintain service – highlights a fundamental misunderstanding of how automation and digital transformation typically unfold.
Economic research, particularly from institutions like McKinsey, demonstrates that automation, especially in its initial phases, often increases demand for labor. Human workers are essential to smooth out the inevitable "kinks" associated with adopting new technologies, from system integration to user training and troubleshooting. Furthermore, successful automation can lead to greater productivity and an expansion of operations, which might initially require more personnel to manage increased capacity before significant labor reductions become feasible. O’Donnell articulated this paradox precisely: "If you’re going to improve services through digital means, you’re going to need to have a bit of a bump in the budget to be able to invest in the systems and the digital capabilities, and at some point, then you can reduce the number of people." The DOGE cuts, by immediately reducing staff, particularly in technology and enforcement, effectively undermined the agency’s ability to make the very investments needed for long-term efficiency and reduced reliance on a large workforce. The concern, he stressed, was "that there was not a replacement, at least not an immediate one, that could step in and provide the level of service."
The Shadow of Reduced Enforcement: Erosion of Taxpayer Confidence
While the IRS claims to have maintained service levels, the long-term implications for enforcement are particularly troubling. The agency’s ability to conduct audits and ensure compliance is a cornerstone of a fair and effective tax system. A robust enforcement presence provides a critical deterrent against tax evasion and helps to close the "tax gap"—the difference between taxes legally owed and taxes actually collected. With fewer experienced personnel, particularly in complex areas like large corporate audits, the IRS’s capacity to scrutinize high-value returns is significantly diminished.
O’Donnell underscored this danger: "In the large corporate space, just over time, losing employees, you just basically reduce what you can get to, and you cover less of it." He elaborated, "Over time, that diminishes the ability of leaders in the IRS to have confidence that taxpayers are complying because you’re not getting to a large enough number of them to be sure about that." This erosion of oversight not only encourages non-compliance among sophisticated taxpayers but also undermines public confidence in the fairness and integrity of the tax administration system. If ordinary citizens perceive that large corporations and wealthy individuals are not being held accountable, their willingness to comply voluntarily may also wane, leading to a broader breakdown in the tax system. The peace of mind that taxpayers are indeed filing their taxes correctly every year is directly linked to the perception of a functional and vigilant oversight mechanism.
A Bleak Fiscal Horizon: Budget Cuts and the Threat to Core Services
The challenges facing the IRS are compounded by a starkly diminishing budgetary outlook. The agency’s annual discretionary budget, which stood at $12.2 billion for fiscal year 2025, has already fallen to $11.2 billion for fiscal 2026. Projections indicate an even sharper decline, with the White House proposing a further cut to $9.8 billion for fiscal 2027. This consistent downward trend represents a significant contraction of resources, far exceeding the "efficiency gains" touted by the agency.
Such severe budget reductions carry dire consequences. They will inevitably lead to a further reduction in enforcement operations, directly impacting the agency’s ability to collect revenue and maintain compliance. Moreover, critical modernization initiatives, including the potentially groundbreaking Direct File program, are now at risk. Direct File, launched in 2024, allowed eligible Americans to file their federal income taxes directly with the IRS for free, offering a crucial alternative to commercial tax preparation services. Scrapping such a program, which was lauded for its potential to save taxpayers money and simplify filing, would be a major setback for taxpayer service and innovation. The implications of these cuts extend beyond mere inconvenience; they threaten the core functions of the IRS and its capacity to serve the public effectively.
Rebuilding in an AI Era: The Road Ahead for the IRS
Despite the bleak outlook, avenues for negotiation and potential relief exist. IRS leadership, under CEO Bisignano, will undoubtedly engage with the Treasury Department and the Office of Management and Budget to advocate for additional funding or to at least discuss how to prioritize and complete essential tasks with reduced resources. Congressional appropriations staff also frequently consult with the IRS to understand its needs and inform budgetary decisions. However, the political will to provide substantial, sustained funding remains a significant hurdle.
The future challenges for the IRS are multifaceted. Beyond merely rebuilding its workforce, reportedly through a plan to hire 8,000 new employees to replace some of those lost, and resuming technological improvements, the agency must navigate the rapidly evolving landscape of artificial intelligence. Integrating AI tools effectively and securely is paramount for the IRS to achieve genuine modernization. This involves identifying affordable, effective, and secure AI solutions, a complex undertaking that requires significant investment in research, development, and cybersecurity. The agency must train its existing and new workforce to leverage these technologies while ensuring the privacy and security of sensitive taxpayer data.
O’Donnell’s ultimate concern encapsulates the agency’s dilemma: "If the objective of the IRS is to be able to improve service to taxpayers, 24/7, 365, you’re going to need to have systems availability to do that, and in order to have the systems, you have to build them, and then you have to maintain them." He concluded, "And I don’t know how that happens in an environment where you’ve got reduced budgetary support to perform those actions to take those steps." The immediate "success" of the 2026 tax season, viewed through the narrow lens of processed returns and refunds, may mask a deeper, more troubling reality. Without sustained investment in its workforce, technology, and core infrastructure, the IRS risks becoming an increasingly antiquated institution, struggling to fulfill its vital mission in an increasingly complex and digital world. The full ramifications of the DOGE cuts, and the subsequent budgetary austerity, are yet to be fully realized, but experts warn that the nation’s tax system may pay a heavy price in the long run.
