FATCA enforcement was built to expose Americans hiding money in offshore accounts. A Treasury watchdog report released Apr. 8, 2026 says the IRS still isn’t turning its data on the highest-balance nonfilers into cases. The reporting burden the law created, meanwhile, keeps landing on ordinary Americans abroad, including people who just need a bank account where they live.
What the watchdog found
The 2026 report is the latest in a series, and its title is blunt: the IRS has not successfully addressed the highest-balance FATCA nonfilers. It identified more than 400 high-balance nonfilers flagged through FATCA data. The IRS referred 164 for possible examination and examined 12, assessing about $41 million in additional tax, the report found. Another 241 received letters that carried no penalty.
The pattern is not new. A 2022 audit of FATCA enforcement laid out the gap in full. When Congress passed the Foreign Account Tax Compliance Act in 2010, the Joint Committee on Taxation projected it would raise about $8 billion through 2020.
The IRS has since spent nearly $683 million building and running the system. It assessed about $14 million in penalties on Americans who failed to file Form 8938, the annual disclosure for foreign assets. TIGTA counted 330,082 potential nonfilers with foreign accounts above $50,000, and at least $3.3 billion in minimum penalties the agency never assessed, though it cautioned that some of those cases could involve data errors or reasonable cause.
The IRS pushes back
The IRS rejects the framing. In its response to the audit findings, the agency calls FATCA “a data source, not a compliance program,” and says the reporting feeds enforcement across the service rather than a single campaign. FATCA information contributed to cases producing $1.5 billion in tax deficiencies as of April 2025, the agency said. Voluntary compliance, it argues, is where the law does its quiet work, and that is hard to measure.
Who carries the burden
FATCA’s lever is a 30% withholding tax on US-source income that noncompliant foreign banks may face if they don’t report their American clients. For a small bank with a handful of US customers, the compliance cost outruns the revenue.
A Government Accountability Office review of foreign asset reporting found that some institutions closed or denied accounts to Americans after FATCA because of the added cost and risk, and the National Taxpayer Advocate has reported the same. FATCA bank account closures follow, and not for the wealthy the law targeted.
The 2026 reporting thresholds are unchanged. A single filer abroad must file Form 8938 on specified foreign assets if those assets top $200,000 at year-end or $300,000 at any point, and the separate report of foreign bank accounts applies once foreign accounts total $10,000 at any time in the year.
Those numbers reach teachers and retirees, not the account holders TIGTA describes with balances in the hundreds of millions. The strain also pushes some toward the exit. The State Department cut the renunciation fee to $450 this year.
A law that misses its mark
The fixes on the table are structural. The National Taxpayer Advocate has recommended a same-country exception that would exempt accounts an American holds in the country where they live, which confirms it’s a proposal, not law. The broader ask is residence-based taxation, which would end the citizenship-based tax system for expats that turns US account holders into a liability for their banks. Neither has passed.
In the meantime the IRS keeps narrowing the pressure at the edges. Under temporary relief for missing tax IDs, compliant Model 1 banks won’t be treated as significantly noncompliant solely for that gap on certain preexisting accounts through 2027, if they meet the conditions. FATCA enforcement stays pointed at the wrong target.
The offshore accounts it was written for keep slipping the net, and the reporting rules keep reaching the people who already left.
