Most US-Connected Persons living abroad assume that what happens in their overseas bank account stays in their overseas bank account. They're wrong. The architecture of international financial reporting has been quietly and systematically rebuilt over the past fifteen years — and today, the IRS has more visibility into foreign accounts than most account holders realize.
The two mechanisms doing this work are Foreign Bank Account Report (FBAR) and the Foreign Account Tax Compliance Act (FATCA). They are related, they overlap, and together they form one of the most aggressive extraterritorial reporting regimes in the world. Understanding both is not optional .
FBAR — formally known as FinCEN Report 114, means that if you are a US person and you have financial accounts outside the United States with an aggregate value exceeding $10,000 at any point during the calendar year, you are required to file an FBAR with the Financial Crimes Enforcement Network (FinCEN), a bureau of the US Treasury.
A few things about this requirement are worth emphasizing:
• The $10,000 threshold is aggregate — not per account. If you have three accounts worth $4,000 each, you file.
• “At any point during the year” means the peak balance, not the year-end balance. A brief transfer that pushes you over the threshold triggers the obligation.
• The filing deadline is April 15, with an automatic extension to October 15.
• FBAR is filed separately from your tax return — it goes to the Financial Crimes Enforcement Network (FinCEN), not the IRS, via the BSA E-Filing System.
The accounts covered include bank accounts, brokerage accounts, mutual funds, trusts, and other financial accounts. If you have signatory authority over an account — even one you don't own the account — it will likely need to be reported .
FATCA is a 2010 law that turned the global banking system into an extension of IRS reporting infrastructure. Under FATCA, foreign financial institutions (FFIs) are required to identify US account holders and report their account information directly to the IRS. Institutions that refuse face a 30% withholding penalty on their US-sourced income — a threat significant enough that virtually every major financial institution worldwide fell into compliance.
The result: your bank in Hong Kong, your brokerage in Singapore, your insurer in the UK — they are reporting your account details to the IRS whether you know it or not. In many cases, they reported your information before you even thought to disclose it yourself.
FATCA also introduced a separate filing requirement for US taxpayers: Form 8938, Statement of Specified Foreign Financial Assets, which is filed with your tax return. The thresholds are higher than FBAR:
• $50,000 at year-end or $75,000 at any point during the year (for single filers living in the US)
• $200,000 at year-end or $300,000 at any point (for single filers living abroad)
• Higher thresholds apply for married couples filing jointly
The most common place people trip up is not malicious concealment — it's genuine ignorance. Many US-Connected Persons simply didn't know these obligations existed. They moved abroad, opened local accounts, lived their lives, and assumed their foreign finances were their own business.
The IRS does not distinguish between willful and non-willful violations the way most people expect. Even 'non-willful' FBAR violations carry penalties of up to $10,000 per violation per year. Willful violations can reach the greater of $100,000 or 50% of account value — per year.
The second most common mistake is assuming that because FATCA reporting exists, personal FBAR filing is redundant. It isn't. Both obligations run in parallel. Your bank's FATCA report does not substitute for your own FBAR filing.
For US-Connected Persons who have not been filing, there are IRS programs — including the Streamlined Filing Compliance Procedures — that allow non-willful non-filers to come into compliance with reduced penalties. The window for these programs is not guaranteed to remain open, and the IRS has signaled increasing enforcement attention on foreign account reporting.
For those already in compliance, the ongoing administrative burden is real but manageable with the right professional support. The more important question is whether your investment and account structures are organized to minimize the reporting surface — a topic we'll return to throughout this series.
Next in the series: You've earned income abroad. Now who actually gets to tax it? We'll look at the Foreign Earned Income Exclusion and Foreign Tax Credit — the tools available to reduce double taxation, and why neither works as cleanly as advertised.
I write about cross-border financial planning and the obligations facing US-Connected Persons living and working internationally. Nothing in this series constitutes legal, tax or investment advice. Let's update the site.