What is the FBAR, and who is FinCEN?
The FBAR is the Report of Foreign Bank and Financial Accounts, filed on FinCEN Form 114. FinCEN is the Financial Crimes Enforcement Network, a bureau of the Treasury Department focused on money laundering and financial crimes. The filing requirement itself dates back to the 1970s under the Bank Secrecy Act, but enforcement was sleepy for decades. FinCEN delegated enforcement to the IRS in 2003, and the IRS has pursued non-filers aggressively ever since.
That history explains the oddity: this is a law enforcement disclosure, not a tax computation. The information lands in a database accessible to the IRS, FinCEN analysts, and law enforcement.
What triggers a filing?
A U.S. person must file if the aggregate value of all reportable foreign financial accounts exceeds $10,000 at any time during the calendar year. Unpack that carefully, because every word is doing work:
U.S. person is broad: citizens, resident aliens, domestic partnerships, corporations, LLCs, trusts, and estates.Foreign financial accounts go well beyond bank accounts: brokerage accounts, mutual funds, and even foreign life insurance policies with cash value.Financial interest or signature authority. You don't have to own the account. If you can sign on your employer's foreign account, you may have a filing requirement with no money of your own overseas.Aggregate means all accounts combined, and at any time means the high-water mark, not the year-end balance.
Example: Lucie, a U.S. resident, keeps three accounts in Belgium: checking at $4,000, savings at $5,000, and an old brokerage account that briefly hit $3,500 in March. No single account ever topped $10,000. Combined, they peaked at $12,500. Lucie must file, and she reports all three accounts, not just the amount over the threshold.
The form, and why it exists
So, you file it with your 1040, right? No, and this is where people get tripped up. Form 114 is filed electronically through FinCEN's BSA E-Filing System, completely separate from your income tax return. The due date is April 15, with an automatic extension to October 15. No extension request needed; it's granted automatically.
For each account, you report the maximum value during the year, the account type, the account number, and the institution's name and address. If a preparer files for you, you sign Form 114a authorizing it, which the preparer retains rather than submits.
Why does the government want this? Transparency. The FBAR exists to give law enforcement visibility into offshore holdings, full stop. Which is exactly why the penalties look nothing like ordinary tax penalties.
The penalties
This is where the FBAR earns its reputation:
Non-willful violations: up to $16,536 per late report (the statutory $10,000, indexed for inflation). The Supreme Court confirmed in 2023 that this applies per report, not per account, which was a meaningful win for filers with many small accounts. Reasonable cause relief is available. Willful violations: the greater of $165,353 or 50% of the account balance at the time of the violation. Per account, per year. Multiple years of willful non-filing can exceed the account itself. Criminal exposure: fines up to $250,000 and five years in prison, doubling where the failure is part of a pattern of illegal activity.
The IRS has six years to assess the civil penalty. That's a long look-back window for a form many people have never heard of.
Bottom line
If you have any foreign account, even a dormant one from a prior life abroad, add up the high-water marks. Over $10,000 combined, and you have an FBAR obligation regardless of whether the accounts earned a dime. The form costs nothing to file and a fortune to skip.
This post is general information, not tax advice for your specific situation.