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Offshore tax evasion and FATCA/FBAR foreign-account reporting
FBAR since 1970s; FATCA 2010· Fraud or scheme
Fact, law or dataA rule, statute, definition or measured number.
Americans owe tax on worldwide income, so hiding money in foreign accounts is evasion; FBAR and FATCA reports now expose most such accounts.
See it on the Money & Finance map →How it works
For decades, secret Swiss and Caribbean accounts let wealthy Americans skip tax on interest and gains. Two reports closed most of the gap. The FBAR, a FinCEN form under the Bank Secrecy Act, is due from any US person whose foreign accounts total over $10,000 at any point in a year; an account at a bank in Seoul counts. FATCA (2010) makes foreign banks report US clients to the IRS or face 30% withholding on US payments. Willful FBAR violations can cost half the balance.
Why it matters
Bank secrecy for US taxpayers has largely ended: over 100 countries share account data under FATCA, and about 56,000 people came forward through IRS amnesty programs, paying over $11 billion.
Facts, rules and data
The UBS (2009) and Credit Suisse (2014) cases, which cost the banks $780 million and $2.6 billion; IRS program data; and journalist leaks such as the 2016 Panama Papers.
Debates and risks
How much wealth sits offshore is debated; economist Gabriel Zucman estimates about 8% of world household financial wealth. Critics say the US, outside the OECD's reporting standard, has become a haven for foreign money.
Connections (3)
▸Offshore tax evasion and FATCA/FBAR foreign-account reporting is a long-running crackdown target of Internal Revenue Service (IRS)Fact, law or data
The connection
Since US tax applies to worldwide income, unreported foreign interest and gains are evasion. The IRS uses FATCA reports from foreign banks, FBAR data, whistleblowers and bank cases to find accounts, and ran amnesty programs that traded lower penalties for disclosure.
When and why
Intensified after 2008; Offshore Voluntary Disclosure Program 2009–2018; foreign banks' FATCA reporting since 2014.
How we know
IRS program statistics, over 56,000 disclosures and over $11 billion collected, plus DOJ cases against Swiss banks.
Debates and risks
How much evasion remains is unknown, and the Treasury's own tax inspector general has questioned how well the IRS uses FATCA data.
▸Bank Secrecy Act and anti-money-laundering rules requires FBAR reports that expose Offshore tax evasion and FATCA/FBAR foreign-account reportingFact, law or data
The connection
The act's foreign-account rule requires any US person with over $10,000 abroad to file an FBAR each year. It began as an anti-laundering tool, but because penalties for willfully skipping it can reach half the balance, it became the government's strongest weapon against hidden accounts.
When and why
Since the 1970s; now FinCEN Form 114, filed online, due in April and automatically extended to October.
How we know
Courts have upheld large willful penalties; the Supreme Court's 2023 Bittner ruling capped non-willful penalties per report, not per account.
Debates and risks
Whether heavy penalties for honest mistakes, often by immigrants with home-country accounts, are fair remains debated.
▸Offshore tax evasion and FATCA/FBAR foreign-account reporting was blown open at UBS through Whistleblower award programs (SEC, IRS, CFTC)Fact, law or data
The connection
UBS banker Bradley Birkenfeld told US authorities in 2007 how the bank helped Americans hide money in Switzerland. His evidence forced UBS to pay $780 million and hand over thousands of client names, breaking Swiss secrecy. The IRS later paid him $104 million, encouraging more tips.
When and why
Geneva and Washington, 2007–2012; UBS settled in February 2009; Birkenfeld served about 30 months in prison for his own role.
How we know
The DOJ's UBS deferred prosecution agreement, Birkenfeld's IRS award, and Senate investigation reports.
Debates and risks
Prosecutors said he first hid his own biggest client's role; whether rewarding him was right is still argued.