IRS audit revenue drop masks complex changes in enforcement metrics

The Treasury Inspector General for Tax Administration released a report indicating that IRS examination revenue - the amount of enforcement money ultimately collected - dropped 35% in fiscal year 2025, falling from $10 billion to $6.5 billion. This decline coincides with a reduction in IRS enforcement personnel, but the revenue figure does not represent a comparable fall in the tax amounts auditors initially propose. In 2025 the IRS closed 497,621 audits, recommending $26.8 billion in additional tax, a modest 7.6% decrease from the previous year’s $29 billion.

Because proposed adjustments must survive appeals and collection processes, only a portion become assessed tax and an even smaller share is actually collected, often over several years. The report also highlights a shift toward correspondence audits, which rose to $7.7 billion in proposed tax in 2025, a 61% increase since 2021, while face-to-face audits have declined. These dynamics show that staffing changes affect audit types and revenue metrics in nuanced ways.