IRS Overtime Costs Surge Amid Workforce Exodus and Operational Crisis: A TIGTA Report Analysis
The Internal Revenue Service (IRS), already struggling to manage a ballooning backlog of tax returns and the lingering effects of a prolonged government shutdown, faced a significant fiscal and operational challenge in 2025. According to a recent report from the Treasury Inspector General for Tax Administration (TIGTA), the agency saw overtime expenditures climb by 12% during the first nine months of the year, even as its total workforce plummeted by roughly a quarter.
The report, dated May 15, 2026, paints a picture of a federal agency under immense strain, forced to rely heavily on a dwindling pool of frontline workers to compensate for a massive reduction in personnel. As the IRS grapples with systemic vacancies, the reliance on overtime has become a double-edged sword: a necessary lifeline to keep taxpayer services afloat, but one characterized by inconsistent oversight and questionable billing practices.
The Perfect Storm: Workforce Reductions and Operational Hurdles
The 2025 fiscal period proved to be one of the most volatile in the IRS’s recent history. The agency underwent a series of aggressive resignation programs designed to reshape the federal workforce. While these programs achieved their goal of reducing headcounts, the speed and scale of the departure—roughly 25% of the total staff—left the remaining employees struggling to manage the same volume of taxpayer demands.
A Shrinking Engine
The data provided by TIGTA is stark. While regular work hours dropped by 14% due to a combination of voluntary resignations, retirements, and involuntary terminations, the operational demands on the agency did not abate. In fact, the workload intensified as tax processing inventories surged by 33% between December 2024 and December 2025, climbing from 1.5 million to 2 million pending cases.
The situation was compounded by a 43-day government shutdown that concluded in November 2025. This period of inactivity created a massive "bottleneck effect," as the agency was forced to play catch-up with months of backlogged correspondence and unprocessed returns. The TIGTA report notes that this shutdown effectively nullified many of the agency’s attempts to streamline operations, forcing a reliance on expensive overtime hours just to keep the status quo from collapsing further.
Financial Implications: The $27 Million Overtime Spike
The financial cost of this operational imbalance is significant. Between January and September 2024, the IRS spent $198 million on overtime. For the same period in 2025, that figure rose to $225 million—an increase of $27 million.
TIGTA’s analysis suggests that this expenditure was not a result of inefficiency, but rather a direct response to the "Service-wide workforce reductions." With fewer people on the payroll to answer phones, process returns, and handle complex tax disputes, the agency had little choice but to authorize extended hours for the remaining staff.
Taxpayer Services: The Frontline Burden
The weight of this operational strain fell most heavily on the Taxpayer Services division. This division accounted for a staggering 87% of all overtime hours logged across the entire agency in 2025. Within that division, contact representatives and tax examiners—the primary points of contact for American taxpayers—reported 82% of the total overtime, totaling 4.3 million hours.
The reduction in these specific roles was particularly acute:
- Contact Representatives: Positions reduced by nearly 6,000 (a 23% decline).
- Tax Examiners: Positions reduced by nearly 4,000 (a 27% decline).
These employees are the backbone of the IRS. Their duties include managing accounts, calculating penalties and interest, verifying tax returns, and navigating the complex communication channels required to resolve taxpayer disputes. By losing nearly a quarter of its workforce in these categories, the IRS effectively stripped its front office, leaving the remaining staff to work long hours to prevent total service failure.
Questionable Claims and Oversight Deficiencies
While the surge in overtime is partially explained by systemic necessity, the TIGTA report also identified troubling gaps in how the IRS monitors and approves these extra hours. The report highlighted 476 "questionable overtime claims" submitted by approximately 300 employees.
The 12-Hour Ceiling
The national agreement between the IRS and the National Treasury Employees Union stipulates that bargaining unit employees should generally not exceed 12 workable hours in a single day. However, TIGTA identified numerous instances where this threshold was ignored.
The audit flagged claims where employees reported more than six hours of overtime on top of their regular schedule, resulting in days exceeding 12 hours. Even more concerning, the report identified 14 employees who claimed to have worked 20 or more hours in a single day. Of these extreme cases, 71% originated from the Taxpayer Services division, suggesting that the pressure to clear backlogs may have led to lax enforcement of workday limits.
Lack of Centralized Control
Perhaps most damning is the discovery that the IRS lacks a centralized mechanism to track or verify overtime. According to the report, each business unit within the IRS sets its own documentation and approval processes. While IRS-wide guidance theoretically mandates that overtime must be ordered or approved in writing, the absence of a unified, agency-wide system makes compliance difficult to enforce and impossible to audit effectively. Furthermore, the agency currently has no cap on the total number of overtime hours an employee can work in a given cycle, leaving the door open for both error and abuse.
Administrative Leave and the Separation Process
A unique factor in the 2025 workforce reduction was the implementation of administrative leave as part of the separation process. Two specific resignation programs allowed employees to remain on the payroll under administrative leave until their official separation date.
The volume of these hours was significant. TIGTA reported that administrative leave increased from 569 hours to more than 1.9 million hours during the period studied. This massive increase in non-productive, paid hours, combined with the spike in overtime pay for the remaining active staff, placed an unprecedented strain on the IRS budget.
Implications for the 2026 Filing Season
The TIGTA report serves as a warning for the upcoming fiscal year. While the report was intended for informational purposes and did not issue formal recommendations, the findings signal that the status quo is unsustainable.
Future Oversight and Accountability
TIGTA has signaled that it intends to conduct a deeper assessment of IRS controls over premium pay and mandatory overtime during the 2026 filing season. Additionally, the Inspector General plans to refer the names of the 300 employees associated with the "questionable claims" back to the agency for internal review.
The Path Forward
The implications for the American taxpayer are clear: as long as the IRS remains understaffed and burdened with high-volume backlogs, the reliance on overtime will likely persist. However, without a centralized, transparent system for approving and tracking those hours, the agency risks wasting taxpayer dollars and eroding public trust.
For the IRS, the challenge will be to balance the immediate need for service continuity with the long-term necessity of a stable, adequately staffed workforce. As the agency moves through the 2026 filing season, it faces the dual pressure of resolving its inventory backlogs while simultaneously addressing the internal oversight failures identified by the Inspector General.
The 2025 data confirms that the IRS is currently operating in a "crisis management" mode. Whether the agency can transition from this state of perpetual overtime to a more stable operational footing will depend on its ability to overhaul its internal controls, improve its hiring and retention strategies, and provide the level of service taxpayers expect without relying on a system that is currently showing significant signs of fatigue and lack of oversight.
