The IRS’s failure to adopt a coordinated approach to tax fraud results in losses of at least $116 billion per year for the U.S. government, according to a recent Government Accountability Office report. The estimate, based on data from 2018 through 2024, places fraud-related losses at the lower end of a possible range that could climb to $304 billion annually—equivalent to between 2% and 6% of the $4.6 trillion in federal taxes owed in 2022.
The GAO report identifies a core structural weakness: the IRS operates without a dedicated antifraud strategy or a central office responsible for oversight. While the agency has long evaluated fraud risks, its efforts lack a unified plan or leadership focused exclusively on prevention. The report argues that establishing a strategic approach, and a specialized antifraud unit, could reduce losses by improving coordination across IRS divisions.
The IRS acknowledges some of the GAO’s concerns but resists sweeping changes. In its response, agency leaders stated they would examine the possibility of developing a full antifraud strategy, though they emphasized that existing efforts fall under the Chief Tax Compliance Officer, currently held by Jarod Koopman. IRS CEO Frank Bisignano disputed the GAO’s framing, insisting the report blurs the line between fraud and broader noncompliance, such as underreported income or filing errors. He also questioned whether consolidating fraud efforts would produce measurable benefits without additional evidence.
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Bisignano’s pushback highlights an ongoing debate over what constitutes fraud. The GAO’s estimate targets cases where taxpayers deliberately conceal income or misrepresent facts to evade taxes. However, the IRS’s broader tax gap, which encompasses all unpaid taxes due to noncompliance, reached $696 billion in 2022. The GAO’s fraud estimate suggests it accounts for 17% to 43% of that total, illustrating the difficulty of separating fraud from other forms of tax avoidance.
Tax experts confirm the complexity of the issue. Kathy Enstrom, chief operating officer at Moore Tax Law Group, observed that fraudsters frequently adjust their tactics to exploit detection gaps. “Fraud is difficult to quantify,” she stated, noting that criminals adapt quickly once weaknesses are identified. The IRS’s own Tax Gap Report has long tracked noncompliance but has never before isolated fraud as a distinct category with its own financial impact.
The GAO arrived at its estimate using a Monte Carlo simulation, a method that accounts for uncertainty by running multiple random samples. This approach reflects the reality that fraud detection is imperfect, some cases slip through, while others are incorrectly classified. The report’s wide range, spanning $116 billion to $304 billion, captures this variability, yet even the lower figure represents a substantial loss for federal revenue.
