FBAR and Form 8938 are two separate filing requirements with different thresholds, different filing destinations, and different definitions of what counts as a reportable asset, and filing one does not satisfy the other. FBAR (FinCEN Form 114) is required once the aggregate value of a client's foreign financial accounts exceeds $10,000 at any point in the year, filed with FinCEN, not the IRS. Form 8938 (FATCA) has thresholds that start at $50,000 and scale up by filing status and residency, is filed as an attachment to the federal return, and covers a broader category of specified foreign financial assets, not just accounts. A client can owe one, the other, both, or neither, and the CPA workflow has to check both independently.

The default case: does the client need to file at all

Start with FBAR, because its threshold is lower and catches more clients. Any US person with a financial interest in, or signature authority over, foreign financial accounts (bank accounts, brokerage accounts, and certain foreign-held retirement or pooled fund accounts) must file FinCEN Form 114 if the aggregate value of those accounts exceeded $10,000 at any point during the calendar year, even for a single day (FinCEN FBAR guidance). Aggregate means every foreign account added together, not each account measured against $10,000 individually. A client with four accounts holding $3,000 each has $12,000 in aggregate value and must file.

Form 8938 asks a different question at a higher bar. For a single filer living in the US, the threshold is total specified foreign financial assets exceeding $50,000 on the last day of the year or more than $75,000 at any point during the year. Married filing jointly living in the US raises that to $100,000 / $150,000. Taxpayers living abroad get much higher thresholds: $200,000 / $300,000 for a single filer, $400,000 / $600,000 for MFJ (2025 Instructions for Form 8938). Form 8938 also reaches assets FBAR doesn't touch, including foreign stock or securities held outside an account, interests in foreign entities, and certain foreign financial instruments.

Why these are not the same requirement

The IRS's own comparison page states it directly: "The Form 8938 filing requirement does not replace or otherwise affect a taxpayer's obligation to file FinCEN Form 114 (FBAR)" (IRS, "Comparison of Form 8938 and FBAR Requirements"). A single filer living in the US with $200,000 in one foreign brokerage account clears the FBAR $10,000 threshold and the Form 8938 $75,000 any-time threshold, so both filings are required. The point that trips up preparers isn't the math, it's the assumption that filing an FBAR "covers" the FATCA obligation, or vice versa. It doesn't. Run both threshold tests independently for every client with foreign holdings, every year, because balances fluctuate and a client who filed neither last year can cross into one or both this year.

FBAR is due April 15, with an automatic extension to October 15 that requires no separate extension request (FinCEN FBAR guidance). Form 8938 is filed with the federal income tax return, so it follows the return's due date, including any extension filed for the 1040 itself.

Penalties are severe, and non-willful still costs real money

FBAR penalties scale sharply with willfulness. A non-willful failure to file can draw a penalty currently adjusted up to $16,536 per violation. A willful violation carries a maximum penalty of the greater of $165,353 or 50% of the account balance at the time of the violation (Treasury/FinCEN inflation-adjusted penalty figures, effective for penalties assessed on or after January 17, 2025). These are the inflation-adjusted current maximums, not the older $10,000/$100,000 statutory base figures still floating around in older articles. Form 8938 carries its own separate penalty structure for failure to file, layered on top of, not instead of, FBAR exposure.

Income reporting still applies, independent of the forms

Filing FBAR or Form 8938 correctly doesn't excuse a client from reporting the income those accounts generate. US citizens and resident aliens owe US tax on worldwide income regardless of where they live or where the account sits (IRS Publication 54). Interest, dividends, and capital gains from foreign accounts belong on the return the same as domestic income, and the amounts should reconcile to the accounts disclosed on FBAR and Form 8938. If a client paid foreign tax on that same income, Form 1116 (Foreign Tax Credit) is usually the mechanism to avoid double taxation, crediting foreign income tax paid against the US liability (IRS, Foreign Tax Credit guidance).

CPA review checklist

Ask every client with any non-US connection, not just the ones who volunteer it, whether they hold foreign bank accounts, foreign brokerage accounts, foreign retirement accounts, or signature authority over any account they don't personally own, including a parent's or employer's account. Run the $10,000 aggregate FBAR test and the filing-status-specific Form 8938 test separately. Confirm foreign-source interest, dividends, and gains are reported and reconciled to the disclosed accounts. If foreign tax was withheld or paid, check whether Form 1116 applies. Document the client's answers in writing regardless of outcome, since the exposure here is penalty risk even when no tax is ultimately due.

FAQs

Do foreign accounts need to be reported even if they generated no income? Yes. Both FBAR and Form 8938 are asset-based reporting requirements, triggered by account value, not by whether the account produced taxable income during the year (FinCEN FBAR guidance, https://www.irs.gov/businesses/small-businesses-self-employed/report-of-foreign-bank-and-financial-accounts-fbar).

Are FBAR and Form 8938 the same requirement? No. They have different thresholds, different filing destinations (FinCEN for FBAR, attached to the IRS return for Form 8938), and different asset definitions. Filing one does not satisfy the other, and the same account can require both filings (IRS, "Comparison of Form 8938 and FBAR Requirements," https://www.irs.gov/businesses/comparison-of-form-8938-and-fbar-requirements).

Are jointly held foreign accounts reportable? Generally yes. A US person with a financial interest in, or signature authority over, a jointly held foreign account counts that account's full value toward both the FBAR aggregate test and, where applicable, the Form 8938 threshold. The exact treatment depends on ownership structure and authority, so this needs a case-by-case review rather than a blanket assumption.

What happens if a client misses FBAR or Form 8938? Non-willful FBAR failures currently carry penalties up to $16,536 per violation; willful failures go up to the greater of $165,353 or 50% of the account balance. Form 8938 has its own separate failure-to-file penalty. Reasonable-cause and voluntary-disclosure options exist and should be evaluated before a late filing is submitted (Treasury/FinCEN penalty adjustment notice, effective January 17, 2025).

Does filing FBAR mean the account income doesn't need to be reported separately? No. FBAR and Form 8938 disclose the existence and value of foreign assets; they don't substitute for reporting the income those assets generate. Interest, dividends, and gains from foreign accounts are still taxable and belong on the return (IRS Publication 54, https://www.irs.gov/publications/p54).

Foreign-account intake is one of the easiest questions to skip during a rushed client interview, and one of the most expensive to skip wrong. [SignalsHQ] surfaces the FBAR and Form 8938 thresholds against the prior year's data so the question doesn't get missed.