Is a Jersey or Guernsey bank account a foreign account for FBAR if I live in the UK?

Yes. FinCEN defines a foreign financial account as a financial account located outside the United States. An account maintained with a bank in Jersey, Guernsey or the Isle of Man meets that definition, just as a London account does. It counts towards the $10,000 aggregate maximum-value test and must be listed as its own entry on FinCEN Form 114, showing the island institution and jurisdiction rather than the UK parent bank.

Are the Channel Islands and the Isle of Man part of the UK for tax purposes?

No. The UK Government's fact sheet on the Crown Dependencies explains that Jersey, Guernsey and the Isle of Man are self-governing dependencies of the Crown, not part of the UK, with their own fiscal systems. For a UK resident, income from island accounts is foreign income that belongs on the foreign pages of Self Assessment, and HMRC treats unreported island income as an offshore matter.

Can I still use the Delinquent FBAR Submission Procedures for missed island accounts?

No. The IRS withdrew its Delinquent FBAR Submission Procedures page around 1 July 2026, so it should not be relied on as a named route. Late FBARs are now filed through FinCEN's BSA E-Filing System with a reason for late filing selected. Where income from the accounts was also missing from US returns and the conduct was non-willful, the Streamlined Foreign Offshore Procedures are the usual catch-up route.

How do I value a multi-currency Guernsey custody account for the FBAR?

Find the account's maximum value during the calendar year, including securities as well as cash, using statements that fairly reflect the peak. Then convert to US dollars using the Treasury Reporting Rates of Exchange for the last day of the calendar year, not the rate on the date of the peak. If no Treasury rate exists for a currency, use another verifiable rate and record its source.

Do I also need Form 8938 for my Crown Dependency accounts?

Often, yes. For taxpayers living abroad, the IRS threshold is more than $200,000 at year end or more than $300,000 at any time for single filers, and more than $400,000 or $600,000 for joint filers. Form 8938 is filed with the income tax return and is separate from the FBAR, so reporting an island account on one form does not satisfy the requirement on the other.

How do I correct unreported Jersey or Isle of Man interest with HMRC?

Use HMRC's Worldwide Disclosure Facility. You notify HMRC through the Digital Disclosure Service, receive a Disclosure Reference Number, and then have 90 days to submit a full disclosure that calculates the tax, interest and penalties, with payment due on submission. Preparing the UK figures before the US returns helps, because UK tax paid on the same income can support US foreign tax credits.

Missed FBAR: Jersey, Guernsey & Isle of Man Accounts

A Missed FBAR on a Jersey, Guernsey or Isle of Man account is one of the most common gaps we find when a US citizen or green-card holder living in the UK first comes to us for return preparation. The direct answer is simple: every account held with a bank, custodian or investment platform in the Crown Dependencies is a foreign financial account for US purposes, so it counts towards the $10,000 aggregate FBAR test and must be reported on FinCEN Form 114. If you have not filed, you can still catch up, either by filing late FBARs through FinCEN's BSA E-Filing System with a reason for late filing, or, where tax returns are also affected, through the Streamlined Foreign Offshore Procedures.

The complication is that these same accounts are also offshore for HMRC. A UK resident who never reported island interest or gains to the IRS has frequently left them off UK Self Assessment as well, on the assumption that an account opened through a London relationship manager is somehow domestic. This guide sets out how the US and UK rules apply to Crown Dependency accounts, how to value multi-currency holdings, how Form 8938 overlaps, and how we sequence a combined US and UK correction for high-net-worth clients.

Why is a missed FBAR on Crown Dependency accounts so common?

In the returns we prepare for UK-based Americans, the pattern is consistent. A client banks with a UK private bank or wealth manager. At some point, often when balances grew or when a multi-currency facility was needed, the relationship manager opened a deposit or custody account with the bank's offshore arm in St Helier, St Peter Port or Douglas. The statements carry the same brand, the same relationship manager signs the letters, and the account is funded from and paid back to a UK current account. The client reasonably thinks of it as part of their UK banking.

Many of these clients file FBARs for their UK current account and ISA platform and still miss the island account entirely, because it never occurred to them that it was a separate jurisdiction. Others filed nothing at all, because they believed FBAR was a rule for people hiding money in tax havens rather than for ordinary sterling deposits. Either way, the result is an incomplete FBAR history, and often an incomplete Form 8938 and UK tax return as well.

Offshore deposit accounts opened for higher interest rates or larger deposit protection structures offered by island banks.
Multi-currency current and call accounts used to hold US dollars, euros and sterling side by side.
Custody and discretionary investment accounts booked in Jersey or Guernsey by a UK wealth manager.
Private-banking accounts in the Isle of Man opened during an earlier posting or before a move to the UK.
Accounts held in the name of a personal investment company where the individual is a director or signatory.

Are Jersey, Guernsey and Isle of Man accounts foreign financial accounts for FBAR?

Yes. A foreign financial account is a financial account located outside of the United States. That is the wording FinCEN uses in its FBAR filing instructions, and it reflects the definitions in the Bank Secrecy Act regulations at 31 CFR 1010.350. The test is about where the account is maintained, not about what currency it holds, which brand appears on the statement, or whether the jurisdiction is in the European Union, the UK or anywhere else. The instructions list the types of account caught: securities, brokerage, savings, demand, checking, deposit and time deposit accounts, among others, plus shares in a pooled fund with a regular net asset value and cash-value insurance or annuity policies.

An account booked with a bank in Jersey, Guernsey or the Isle of Man is located outside the United States. It is therefore a foreign financial account, exactly as a London account is. The US rules do not draw any distinction between a UK account and a Crown Dependency account: both are foreign, both count towards the threshold, and both must be listed separately on the FBAR. The practical point is that the island account must appear as its own line with the island institution's name and address, not rolled into the UK parent bank's entry.

The IRS summary of the requirement at https://www.irs.gov/businesses/small-businesses-self-employed/report-of-foreign-bank-and-financial-accounts-fbar confirms that a US person must file if the aggregate value of their foreign financial accounts exceeded $10,000 at any time during the calendar year. FinCEN's own overview at https://www.fincen.gov/report-foreign-bank-and-financial-accounts states the same rule and links to the filing instructions, the due-date guidance and the exchange rates to use.

The "it's basically UK" misconception

The single biggest driver of missed filings on these accounts is the belief that the Channel Islands and the Isle of Man are part of the United Kingdom. They are not. The UK Government's own fact sheet on the Crown Dependencies, published at https://assets.publishing.service.gov.uk/media/5e398990e5274a08e229ca0f/crown-dependencies-factsheet-february-2020.pdf, explains that Jersey, Guernsey and the Isle of Man are self-governing dependencies of the Crown, are not part of the UK, and have their own legislatures, legal systems and fiscal arrangements. The UK is responsible for their defence and international relations, but each island sets its own taxes.

This matters for two separate reasons. For US purposes, the jurisdiction on the FBAR must be correct, and the account must be listed as held with an institution in Jersey, Guernsey or the Isle of Man rather than in the United Kingdom. For UK purposes, income arising from an account in the islands is income from a source outside the UK. HMRC treats it as offshore, which carries different reporting on the Self Assessment return and a heavier penalty regime if it has been left out. Clients who assumed the islands were part of the UK are usually wrong on both sides at once.

How do island banks report you to the IRS under FATCA?

Each Crown Dependency has its own intergovernmental agreement with the United States under the Foreign Account Tax Compliance Act. The US Treasury's list of FATCA agreements at https://home.treasury.gov/policy-issues/tax-policy/foreign-account-tax-compliance-act shows Jersey, Guernsey and the Isle of Man as separate jurisdictions, each with a Model 1 agreement in force. They are not covered by the UK's agreement.

Under a Model 1 agreement, the financial institution identifies account holders who are US persons and reports their account details to its own local tax authority, which then exchanges the information with the IRS. In practice this means an island bank that has your US citizenship or US place of birth on file will have been reporting your account balance and income to the IRS through the island authority. A client who has never filed an FBAR for that account is therefore not invisible. The IRS may already hold data showing an account that does not appear on any FBAR or Form 8938, and that mismatch is precisely what makes a voluntary, well-documented catch-up so much better than waiting.

The $10,000 aggregate maximum-value test explained

The FBAR threshold is an aggregate test. You add together the maximum value of every foreign financial account in which you had a financial interest or over which you had signature authority during the calendar year. If that total exceeded $10,000 at any time, every account must be reported, including small ones. A high-net-worth client with a UK current account, an ISA platform, a Jersey deposit and a Guernsey custody account will almost always be over the threshold, and all four accounts go on the form.

The maximum value of an account is, in FinCEN's words, a reasonable approximation of the greatest value of currency or non-monetary assets in the account during the year. Periodic statements can be relied on if they fairly reflect that peak. For custody and investment accounts, that means the highest total value of cash plus securities, not just the cash line, and not the year-end value. The maximum value is determined account by account in the account's own currency, then converted to US dollars.

Multi-currency accounts and Treasury Reporting Rates of Exchange

Many island accounts hold several currencies in one relationship. The FinCEN instructions require you to convert the maximum value of each account into US dollars using the Treasury rate for the last day of the calendar year, not the rate on the date the peak occurred. The current Treasury Reporting Rates of Exchange are published at https://fiscaldata.treasury.gov/datasets/treasury-reporting-rates-exchange/treasury-reporting-rates-of-exchange, and FinCEN's FBAR page links directly to them. If no Treasury rate is available for a currency, the instructions allow another verifiable rate, provided you record its source. Values are rounded up to the next whole dollar.

Identify whether the institution treats the multi-currency facility as one account with sub-balances or as separate accounts with separate numbers; each separately numbered account is its own FBAR entry.
For each account, find the peak value during the year from the statements, including securities in custody accounts.
Where a single account holds several currencies, work out a consistent peak for the account as a whole and document the method used.
Convert using the Treasury year-end rate for each currency, and keep the workpaper with the statements.
Use the same approach consistently across every year you are catching up, so the history is coherent if the IRS asks questions.

Form 8938 overlap for high-net-worth filers

The FBAR is not the only US report these accounts trigger. Form 8938, the Statement of Specified Foreign Financial Assets, is filed with the income tax return and has much higher thresholds for taxpayers living abroad. The IRS comparison at https://www.irs.gov/businesses/comparison-of-form-8938-and-fbar-requirements sets them out: for a single filer or married filing separately living abroad, more than $200,000 on the last day of the tax year or more than $300,000 at any time during the year; for married filing jointly living abroad, more than $400,000 at year end or more than $600,000 at any time.

High-net-worth clients with island custody accounts routinely exceed these limits, so a missed FBAR usually means a missed Form 8938 as well. The two forms overlap but are not identical. Form 8938 is part of the tax return, uses fair market value and its own rules on which assets are included, and is subject to its own penalty regime. Reporting on one does not satisfy the other. When we correct prior years we prepare both, and we reconcile them so the same account shows consistent values across the FBAR, Form 8938 and the income schedules.

Signature authority through a personal investment company

Some clients hold island accounts through a personal investment company rather than personally. Two FBAR concepts matter here, and this is a brief outline rather than a full treatment. First, financial interest: under the FinCEN instructions, a US person has a financial interest in an account owned by a corporation in which they own, directly or indirectly, more than 50 percent of the value or voting power. Second, signature authority: the authority of an individual, alone or with another person, to control the disposition of assets in an account by direct communication with the institution. A director who can instruct the bank has signature authority even if they own none of the company.

If the company is itself a foreign corporation controlled by a US person, other US information returns may also apply, and those need to be addressed in the same catch-up. The key FBAR point is that a company account in Jersey or Guernsey can be reportable by the individual, and it counts towards the individual's $10,000 aggregate.

Worked scenario: a Jersey deposit and a Guernsey custody account

The following figures are an illustration only, built to show the mechanics. They are not client data, and the exchange rates are assumptions for the example rather than actual Treasury rates for any year. Assume a US citizen, single, living in London for many years, with a UK current account whose peak balance in the year was 8,000 pounds, a Jersey sterling fixed-term deposit whose peak was 45,000 pounds, and a Guernsey multi-currency custody account held through the same UK private bank's island arm. Assume the Guernsey account's peak value comprised 60,000 US dollars of cash, 20,000 euros of cash and a sterling portfolio worth 90,000 pounds.

Using assumed year-end rates of 1.25 dollars per pound and 1.05 dollars per euro, the UK account converts to 10,000 dollars, the Jersey deposit to 56,250 dollars, and the Guernsey account to 60,000 plus 21,000 plus 112,500, or 193,500 dollars. The aggregate maximum value is 259,750 dollars, far above the 10,000 dollar FBAR threshold, so all three accounts must be reported, each on its own line with its correct jurisdiction. Note that the UK account alone would have been at the threshold but not over it; it becomes reportable because of the island accounts.

For Form 8938, assume the combined year-end value of the three accounts was 240,000 dollars. That exceeds the 200,000 dollar year-end threshold for a single filer living abroad, so Form 8938 is also required. On the UK side, the Jersey deposit interest and any Guernsey dividends, interest and realised gains are foreign income and gains that belong on the foreign pages of the Self Assessment return. If this client had never reported any of this, the correction would involve US FBARs, amended or delinquent US returns including Form 8938, and a UK offshore disclosure, all built from the same set of statements.

How do you fix a missed FBAR after 1 July 2026?

An important change has shaped every catch-up plan we have prepared since mid-2026. The IRS withdrew its Delinquent FBAR Submission Procedures page around 1 July 2026, so that named procedure should not be treated as an available route, whatever older guides still say. The remaining paths are these.

Late FBARs only: where all income from the island accounts was correctly reported on US returns and only the FBARs were missed, file each missing year through FinCEN's BSA E-Filing System. The FinCEN instructions require a late filer to select a reason for filing late from the drop-down list, or choose other and give a written explanation. The IRS advises that if it has not contacted you and you are not under investigation, you should file late FBARs as soon as possible to keep potential penalties to a minimum.
Streamlined Foreign Offshore Procedures: where income from the accounts was also left off US returns and the conduct was non-willful, this route requires the most recent three years of delinquent or amended returns, the most recent six years of FBARs, and a signed Form 14653 certification of non-willful conduct.
Where conduct may have been willful, neither route above is appropriate, and the case needs to be assessed on its own facts before anything is filed.

The Streamlined Foreign Offshore Procedures are described at https://www.irs.gov/individuals/international-taxpayers/us-taxpayers-residing-outside-the-united-states. For US citizens and green-card holders, eligibility requires meeting the non-residency test: no US abode and physically outside the United States for at least 330 full days in at least one of the most recent three years. The IRS defines non-willful conduct as conduct due to negligence, inadvertence or mistake, or a good faith misunderstanding of the law. Eligible taxpayers are not subject to failure-to-file, failure-to-pay, accuracy-related, information return or FBAR penalties. Green-card holders should check their status history carefully before relying on the route, because the residency analysis differs where a card has been abandoned or surrendered.

The Form 14653 narrative is where the Crown Dependency facts matter. A credible, specific explanation, such as believing an account opened and serviced by a UK bank's relationship team was part of the client's UK banking, and showing that UK accounts were otherwise reported, is far stronger than a generic statement. We draft the narrative from the documents: the account-opening correspondence, the statements and the client's prior filings.

Non-willful vs willful FBAR penalties

The civil penalty framework is set out in the Internal Revenue Manual at https://www.irs.gov/irm/part4/irm_04-026-016. For a non-willful violation, the statutory maximum is 10,000 dollars, adjusted annually for inflation, so the amount actually applied in a given year is higher than the headline figure. Following the Supreme Court's 2023 decision in Bittner v. United States, the non-willful penalty applies per annual report rather than per account. The manual also states that the non-willful penalty should not be imposed where the violation was due to reasonable cause and accurate delinquent or amended FBARs are filed.

For a willful violation, the maximum is the greater of 100,000 dollars, again adjusted for inflation, or 50 percent of the balance in the account at the time of the violation. Willfulness includes knowing violations, reckless disregard and willful blindness. For a client with a large Guernsey custody account, the gap between those two regimes is enormous, which is why the facts supporting non-willful conduct must be gathered and documented before choosing a route. Criminal penalties also exist for the most serious cases.

The UK side: offshore income for a UK resident

For a UK resident, income and gains from Jersey, Guernsey and Isle of Man accounts are foreign income and gains. GOV.UK guidance at https://www.gov.uk/tax-foreign-income explains that if you need to pay tax, you usually report foreign income, including foreign savings interest and dividends, on a Self Assessment return. From 6 April 2025 the old remittance basis for non-domiciled residents was replaced, and UK residents now pay tax on worldwide income unless they qualify for the new Foreign Income and Gains relief. Most long-term UK-resident Americans will not qualify for that relief, so island interest and gains are taxable in the UK as they arise.

The Crown Dependencies also take part in international automatic exchange of financial account information, so HMRC is typically in a position to see island balances belonging to UK residents. That is the UK counterpart to FATCA reporting to the IRS, and it is why a US catch-up that ignores the UK position leaves the client exposed on the other side.

HMRC's Worldwide Disclosure Facility

Where UK tax is owed on unreported offshore income or gains, the HMRC route is the Worldwide Disclosure Facility, described at https://www.gov.uk/guidance/worldwide-disclosure-facility-make-a-disclosure. GOV.UK states that anyone who wants to disclose a UK tax liability that relates wholly or partly to an offshore issue can use it, and offshore issues include income arising from a source in a territory outside the UK and assets held outside the UK. The older island-specific disclosure facilities are closed.

Notify HMRC through the Digital Disclosure Service and receive a Disclosure Reference Number.
Make the full disclosure within 90 days of the notification acknowledgement.
Self-assess the behaviour behind the error and calculate the tax, interest and penalties due.
Pay the full disclosure amount at the time of submission, as the facility's terms require.
Provide any supporting documents HMRC requests after submission.

UK offshore penalties depend on behaviour and on the jurisdiction category involved, and the time limits for HMRC to assess extend further back where there was carelessness or deliberate behaviour. Because the calculation depends on individual facts, we work it year by year rather than applying a single percentage.

Sequencing the US and UK corrections together

The failure mode we see most often is a client who fixes one country and forgets the other, or who fixes both with different numbers. Island statements are the single source of truth for both corrections, and the work should be built from them once. The order that works in our experience is as follows.

Collect every statement for each island account for all affected years, including account-opening documents that show the booking jurisdiction.
Build one schedule per account with peak values, year-end values, interest, dividends and realised gains in the account currency.
Prepare the UK figures first by UK tax year, because UK tax paid on the island income is an input to US foreign tax credits.
Prepare the US figures by calendar year, converting income at appropriate rates and applying foreign tax credits for UK tax on the same income.
File the US catch-up, whether late FBARs or the Streamlined Foreign Offshore Procedures, and the HMRC disclosure in a coordinated window, so neither authority receives information the other filing contradicts.

Because UK tax on island interest and gains will usually be paid as part of the HMRC disclosure, the US returns prepared under the Streamlined Foreign Offshore Procedures can often claim foreign tax credits that reduce or eliminate the US tax on the same income. Getting the UK numbers right first therefore tends to reduce the US bill. The difference between UK tax years and US calendar years needs careful apportionment, and it is one of the points we check most closely before anything is filed.

Practical checklist before you file anything

Confirm the booking jurisdiction of every account: Jersey, Guernsey, Isle of Man or the UK itself.
Confirm your status as a US person for each year, especially for green-card holders.
Check whether US returns were filed and whether island income appeared on them; this decides between late FBARs and the Streamlined route.
Check whether island income appeared on UK Self Assessment returns.
Identify any company accounts where you have signature authority or a more-than-50 percent interest.
Keep FBAR and account records for five years from 15 April of the year after the reporting year, as the FinCEN instructions require.

A missed FBAR on Crown Dependency accounts is fixable, and for most UK-based Americans the facts support a non-willful narrative. What turns a manageable correction into a difficult one is delay, inconsistency between the US and UK filings, and reliance on procedures that no longer exist. Treat the islands as what they are, separate jurisdictions whose institutions report to both the IRS and HMRC, and build both corrections from the same evidence.