The FBAR from Japan: Which Accounts Count, and What Happens If You Missed It

In one line: if all your non-U.S. accounts together ever exceeded $10,000 — even for a single day — you file an FBAR. It is separate from your tax return, and the penalties for skipping it dwarf most tax bills.

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What the FBAR actually is

The FBAR (FinCEN Form 114) is not a tax form. It is an information report: a list of your foreign financial accounts, their highest balances for the year, filed electronically with FinCEN — a different agency from the IRS, through a different system (BSA E-Filing), never attached to your Form 1040. No tax is calculated on it. That is precisely why people miss it: “I owed nothing, so I assumed I had nothing to file.”

The $10,000 test — aggregate, at any moment

The threshold is not per account and not at year end. Add up all your non-U.S. accounts — every bank account, brokerage account, and more — at their combined highest point of the year. Over $10,000, even for one day? Every account gets reported, including the one holding ¥3,000.

For someone living in Japan, this threshold is almost a formality. An ordinary salary account plus a small brokerage balance crosses it without trying. The practical rule: if you live in Japan and bank in Japan, assume you file.

Accounts people forget

• NISA and brokerage accounts — reportable, separately from the PFIC tax rules that apply to the funds inside.
• Joint accounts with a Japanese spouse — you report the full value, not your half.
• Accounts you can sign for but don’t own — a company account with your signature authority counts.
• iDeCo and pension-type accounts — the conservative practice is to report them.
• Old accounts — the furusato bank account from your first year in Japan still counts while it exists.

The maximum value is converted at the Treasury year-end rate, and the deadline tracks the tax season: April 15, with an automatic extension to October 15 — no form needed for the extension.

What missing it costs

Non-willful violations start above $16,000 per report (inflation-adjusted). Willful violations reach the greater of about $165,000 or 50% of the account balance — per year. The U.S. learns about Japanese accounts automatically: your bank already reports U.S.-person accounts under FATCA. The question is not whether the account is visible; it is who reports it first, you or the bank alone.

If you have missed years

Do not simply start filing “from now on” — a sudden clean year on top of silent ones is its own red flag. And do not file the back years quietly. There are official routes, and they are generous to people who come forward first:

• Delinquent FBAR procedures — if your tax returns were otherwise complete and you simply missed the FBAR, late reports with a reason statement typically resolve with no penalty.
• Streamlined Foreign Offshore Procedures — if tax returns were also missed or wrong and the failure was non-willful, three years of returns and six years of FBARs bring you fully current, with every offshore penalty waived for those living outside the U.S.

Which route fits depends on your facts — and the willfulness question deserves a professional’s eyes before anything is filed.

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This article is general information for 2025, not advice on any specific situation. Thresholds and penalty amounts adjust annually.