IRS Service Strains Worsen Amid Budget Cuts
The IRS service strains facing the upcoming filing season are intensifying as staffing levels fall, budgets tighten, and backlogs grow. Federal watchdogs warn that reduced workforce capacity and delayed modernization efforts could slow return processing and affect refund timelines.
The Treasury Inspector General for Tax Administration reported that IRS staffing dropped sharply in early 2025, falling from about 103,000 employees in January to roughly 77,000 by May. That represents an estimated 25% reduction in headcount in just five months. The watchdog said the agency is now operating at staffing levels similar to October 2021.
TIGTA also noted that proposed fiscal year 2026 budget scenarios, if enacted, would reduce annual IRS funding by roughly 20%. The report warned that delivering consistent taxpayer service while modernizing information technology systems and enforcing tax laws will become more difficult under those constraints.
A separate January 2026 filing-season readiness memo stated that recent workforce-reduction efforts had returned IRS staffing to earlier levels, while work inventories increased. The memo linked staffing losses and operational disruptions to growing inventories in several key processing programs.
According to TIGTA, reduced staffing and funding uncertainty remain central risks as the agency prepares for the next filing season.
TIGTA reported that by December 2025, total inventory in key individual return processing programs had risen to about 2.0 million items. That figure compares with about 1.5 million in December 2024 and approximately 871,000 in December 2019, before the pandemic.
The watchdog attributed the increase to staffing reductions and a lapse in appropriations, which disrupted efforts to reduce inventory. It warned that inventory carried into a filing season can affect timely processing and increase the risk of refund delays.
As of November 30, 2025, the IRS paid more than $2.6 billion in interest to individuals. TIGTA said some of those payments were tied to processing delays and other interest obligations.
Growing inventories, especially in paper and correspondence categories, are considered ongoing service risks. TIGTA stated that delayed processing could affect refund timing and raise additional costs.
The $2.6 billion in interest paid during Processing Year 2025 underscores the financial implications of delays. When refunds are not issued within statutory timeframes, the IRS must pay interest to affected taxpayers.
TIGTA emphasized that sustained inventory levels entering a filing season can create compounding challenges. Higher backlogs may further strain limited staffing resources.
Oversight findings show improvement in IRS phone performance compared with pandemic-era lows. The Government Accountability Office reported that during the 2023 filing season, IRS customer service representatives answered 7.7 million calls, a 65% increase over 2022.
The average time to answer improved from 28 minutes to 3 minutes, according to the GAO. However, the agency continued to struggle with correspondence services, with 61% of taxpayer mail inquiries considered late as of the end of that filing season.
TIGTA cautioned that widely cited phone metrics do not reflect all public-facing phone lines. In its fiscal year 2026 management challenges report, TIGTA noted that an 88% level of service figure covered calls to only 33 of roughly 100 IRS phone lines and only during filing season.
The watchdog stated that when it tested 103 public-facing lines, 18 lines had hold times of 30 minutes or more, and most of those lines were not included in official service metrics.
GAO reported that the IRS “continued to struggle in providing correspondence services,” highlighting ongoing imbalances between phone-based assistance and paper workflows. TIGTA similarly cited extensive inventories in correspondence and error-resolution categories entering the 2026 season.
These delays contribute to broader IRS service strains, particularly for taxpayers who must rely on mailed responses or paper documentation.
Both GAO and TIGTA describe modernization initiatives as central to improving taxpayer experience and reducing reliance on manual processing. However, watchdogs report that funding changes and staffing reductions have delayed several projects.
GAO stated that the IRS began reassessing certain Inflation Reduction Act-related projects because of changes in funding and staffing levels. The agency faces challenges in demonstrating improvements while operating under uncertain resource conditions.
TIGTA’s readiness memo added that modernization efforts intended to create efficiencies are delayed and that expected gains may not occur during the upcoming filing season.
The Congressional Budget Office has explained that reductions in IRS resources can affect enforcement capacity and alter federal revenue projections. CBO analysis describes how rescinding IRS funding may reduce long-term revenue collections.
Budget decisions, therefore, influence both taxpayer service performance and enforcement outcomes.
Across multiple federal reports, oversight agencies consistently point to staffing reductions, funding uncertainty, and delayed modernization as central risks.
TIGTA stated that delivering “quality service to taxpayers” while modernizing systems and enforcing tax laws will be challenging under a reduced workforce and constrained budget.
GAO reported that the IRS “continued to struggle in providing correspondence services” and recommended steps to improve processing and evaluate hiring efforts.
During a lapse in appropriations in October 2025, the IRS announced that live telephone assistance would be limited and that walk-in Taxpayer Assistance Centers would close temporarily. The agency warned taxpayers to expect longer delays after operations resumed due to a growing backlog of correspondence.
The combined findings suggest that IRS service strains remain sensitive to staffing levels, budget decisions, and modernization timelines.
Taxpayers may see improved phone access in certain areas, but correspondence delays and processing backlogs continue to pose risks. Filing electronically and responding promptly to IRS notices may help reduce the risk of delays.
Watchdog reports indicate that the pace of inventory reduction and project completion will play a key role in determining service performance in the coming filing season.
By William Mc Lee, Editor-in-Chief & Tax Expert—Get Tax Relief Now
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