FBAR for Americans in the UK

How UK current accounts, ISAs and SIPPs count toward the $10,000 combined-peak FBAR threshold, and how the FBAR differs from Form 8938.

By Danilson Ramos · Founder, Atamatax

Updated July 2026

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The FBAR (FinCEN Form 114) is a U.S. report of non-U.S. financial accounts. It's filed electronically with FinCEN, separately from your tax return. For Americans in the UK it's easy to overlook — ordinary UK accounts can push you over the threshold without any single account looking large.

When an American in the UK has to file

Generally, when the combined value of your non-U.S. financial accounts exceeded $10,000 at any point during the year — the peak, not the year-end balance. Because it's a combined and currency-converted figure, a current account, a cash ISA, and a SIPP together can cross the line even if none is big on its own.

A common UK mistake: assuming an ISA is 'tax-free, so it doesn't count'. ISAs are tax-free in the UK, but for FBAR purposes they're generally still reportable foreign accounts.

What UK accounts may count

UK current and savings accounts.
Cash and stocks-and-shares ISAs.
SIPPs and other UK pension/investment accounts (account-level reporting).
Accounts where you have signature authority, even if you're not the owner.

FBAR vs Form 8938 (FATCA)

	FBAR (FinCEN 114)	Form 8938 (FATCA)
Filed with	FinCEN, separately	Your tax return
Threshold	$10,000 combined peak	Higher; varies by status & residence
Scope	Financial accounts	Specified foreign financial assets

Many U.S. persons in the UK file both the FBAR and Form 8938. They overlap but have different thresholds and aren't the same filing.

Not sure if your UK accounts cross the FBAR line?

The free Tax Risk Check helps you think through the combined-peak threshold and whether Form 8938 is also in play. Atamatax provides preparation support; this is not individualized tax or legal advice.

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Authorities cited

31 CFR §1010.350 — 31 CFR §1010.350 — FBAR (FinCEN Form 114) filing requirement and $10,000 threshold
FinCEN Form 114 (FBAR) — Report of Foreign Bank and Financial Accounts (FBAR)
IRS Form 8938 — About Form 8938 — Statement of Specified Foreign Financial Assets
IRC §6038D — IRC §6038D — Information reporting of specified foreign financial assets (Form 8938)

Primary sources (Cornell Legal Information Institute for the US Code and CFR; IRS.gov for forms, procedures, and treaty documents). This page is general information, not individualized tax or legal advice.

Atamatax provides tax preparation support and educational resources. This website does not constitute legal or tax advice.

Frequently asked questions

Does my ISA count toward the FBAR even though it's tax-free in the UK?

Yes — a UK ISA is generally a reportable foreign account for U.S. purposes and counts toward the FBAR's $10,000 combined peak, regardless of its UK tax-free status. Its investments may also raise separate PFIC questions.

What if no single UK account ever held $10,000?

The FBAR threshold is the combined peak across all your non-U.S. accounts, not per account, so several smaller accounts that add up to over $10,000 at any point in the year can trigger it.

Is the FBAR the same as Form 8938?

No. The FBAR (FinCEN 114) goes to FinCEN with a $10,000 combined threshold; Form 8938 (FATCA) is filed with your return and has higher, status-dependent thresholds. Many people in the UK have to file both.

FBAR for Americans in the UK

When an American in the UK has to file

What UK accounts may count

FBAR vs Form 8938 (FATCA)

Not sure if your UK accounts cross the FBAR line?

Authorities cited

Frequently asked questions

Related guides

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