Is a US dollar account at a UK bank reportable on the FBAR?

Yes. The IRS states that an account at a financial institution located outside the United States is a foreign financial account, and the Internal Revenue Manual at 4.26.16 confirms that it is the location of the account, not the nationality of the institution or the currency of the balance, that governs. A dollar account at a UK bank is foreign and counts towards the $10,000 aggregate threshold.

Do I need to convert a dollar-denominated account for FBAR purposes?

No. FinCEN's Reporting Maximum Account Value guidance states that for an account denominated in US dollars, the maximum value is the largest US dollar value of the account during the report year. No exchange rate is applied. The maximum-value rule still applies in full, so you report the highest balance reached during the calendar year, not the 31 December figure.

Which exchange rate does FinCEN require for accounts in other currencies?

FinCEN directs filers to the Treasury's Financial Management Service rate for the last day of the calendar year, published by the Bureau of the Fiscal Service as the Treasury Reporting Rates of Exchange. This is a year-end spot rate and is not the same as the annual average rate commonly used to translate income on a US tax return. Where no Treasury rate exists, another verifiable rate may be used if the source is stated.

My dollar account paid no interest and was open for six weeks. Is it still reportable?

Yes. The IRS confirms that whether an account produced taxable income has no effect on whether it is a foreign financial account, and there is no minimum holding period. An account opened for a US property completion and closed weeks later is reported at its maximum value for that calendar year, even if it was closed before 31 December and even if it earned nothing.

How many years of missed FBARs do I need to correct?

Where income was correctly reported and only the FBAR was missed, late reports are filed for the years affected with a reasonable-cause explanation. Where income was also unreported and you meet the non-residency test, the Streamlined Foreign Offshore Procedures require delinquent FBARs for the most recent six years for which the due date has passed, together with three years of amended or delinquent returns and a signed Form 14653.

What happened to the Delinquent FBAR Submission Procedures?

The IRS withdrew the published Delinquent FBAR Submission Procedures page around 1 July 2026 and the page no longer resolves on IRS.gov. No replacement procedure has been published. Late FBARs are now filed on the basis of reasonable cause under 31 USC 5321(a)(5)(B)(ii), or through the Streamlined Foreign Offshore Procedures where income was also unreported and the eligibility conditions are met.

Missed FBAR: UK Account Held in US Dollars

A Missed FBAR on a UK account denominated in US dollars is still a missed FBAR, because the currency the account is held in has no bearing whatsoever on whether it is reportable. FinCEN Form 114 captures financial accounts by reference to where the institution sits, not by reference to what sits inside them. The IRS states the test plainly on its FBAR page: an account at a financial institution located outside the United States is a foreign financial account. A dollar account at a London bank is located outside the United States. It is therefore foreign, it counts towards the $10,000 aggregate threshold, and it must be listed individually on the report.

This is one of the most common reporting failures we see among internationally mobile clients, and it is almost never deliberate. It arises because the account looks and behaves like a domestic one. The statements are in dollars, the balance needs no translating, nothing appears on a foreign exchange report, and the client has often opened it specifically to handle a US transaction. Every instinct says the account belongs on the American side of the ledger. The filing rule says otherwise.

Why Does a Missed FBAR Happen on an Account That Is Already in Dollars?

The failure is a category error rather than an oversight. Most people, quite reasonably, build a mental model of foreign account reporting around currency risk. They assume the regime exists to capture value that sits outside the dollar system, and so an account already inside the dollar system feels out of scope. Once that assumption is in place, everything else reinforces it. There is no conversion to perform. There is no exchange gain to report. There is no unfamiliar currency code on the statement. The account simply does not trigger any of the mental alarms that a euro or sterling balance would.

There is a second reinforcing factor specific to UK banking. A dollar account at a UK institution is frequently opened as a sub-product of an existing sterling relationship. It arrives as an extra line on the same online banking dashboard, under the same customer number, often with a sort code that looks identical to the sterling account. Clients describe it as a currency pocket rather than an account, and they describe it that way to their preparer. Nothing about the customer experience signals that a separate reportable account has come into existence.

What Actually Makes an Account Foreign for FBAR Purposes?

A foreign financial account is an account maintained at a financial institution physically located outside the United States. That is the whole test. The Internal Revenue Manual at 4.26.16 puts it beyond argument: it is the location of an account, not the nationality of the financial institution, that determines whether an account is foreign for FBAR purposes. The manual then gives the two worked illustrations that settle most disputes, confirming that an account held at an overseas branch of a US-based bank is a foreign financial account, while an account at a US branch of a foreign-based bank is not.

Read those two examples together and the currency argument collapses entirely. A dollar account at the London branch of a US bank is reportable. A sterling account held at a New York branch of a UK bank is not. Currency appears nowhere in the analysis. Neither, incidentally, does income: the IRS is explicit that whether the account produced taxable income has no effect on whether it is a foreign financial account. A zero-interest dollar holding account that sat idle for eleven months is exactly as reportable as an interest-bearing sterling deposit.

The location of the branch or institution governs, not the currency of the balance and not the nationality of the bank
An overseas branch of a US bank is foreign for FBAR purposes; a US branch of a foreign bank is not
Whether the account generated interest, dividends or any taxable income at all is irrelevant to the reporting question
The account is reportable even if it was open for only part of the year, and even if it has since been closed
The $10,000 test is an aggregate across all foreign accounts at any moment in the calendar year, not a per-account test
Signature or other authority over an account you do not own can trigger the same obligation

Do You Convert a Dollar Account for the FBAR, and Which Rate Applies?

No conversion is required, and this is where FinCEN's own guidance is unusually helpful. Its Reporting Maximum Account Value page states that for an account denominated in US dollars, the maximum value of the account is the largest US dollar value of the account during the report year. There is no translation step, no rate to source and no rounding convention to apply. What survives, and what clients consistently miss, is the maximum-value rule itself.

FinCEN defines maximum value as a reasonable approximation of the greatest value of currency or non-monetary assets in the account during the calendar year. It permits reliance on periodic account statements, provided those statements fairly reflect the maximum account value during the year. The figure you report is therefore the high-water mark, not the 31 December balance. A dollar account that peaked at $1.4 million in March on a completion and closed the year at nil is reported at its peak. An account opened on 2 January and emptied on 20 January is reported at the highest figure it touched in those eighteen days.

For any non-dollar balance you do hold, FinCEN directs filers to the Treasury's Financial Management Service rate for the last day of the calendar year, now published by the Bureau of the Fiscal Service as the Treasury Reporting Rates of Exchange. Where no Treasury rate exists, FinCEN permits another verifiable exchange rate provided the filer states the source, and where a country operates multiple rates, the rate to use is the one that would apply if the currency in the account were actually converted into dollars on the last day of the calendar year.

Why the FBAR Rate Is Not the Rate on Your Tax Return

This is the single most frequent technical error in self-prepared corrections, and it is worth isolating. FinCEN Form 114 uses a year-end spot rate published by Treasury. Income items on the Form 1040 are generally translated using the rate in effect when the income was received, with the IRS annual average rate commonly used for items received evenly through the year. The two are different instruments serving different purposes, and they will not agree.

The practical consequence for a dollar-account holder is counter-intuitive but welcome. If every one of your UK accounts were dollar-denominated, your FBAR would contain no rate-driven variables at all. In practice almost nobody is in that position, and the mixed case is where errors cluster: a sterling current account converted at the Treasury year-end rate, a dollar sleeve carried at face value, and interest on both translated on an entirely different basis for the return. A consistent, documented convention across the two filings is what withstands scrutiny.

Multi-Currency Wallets, Offset Facilities and Sweep Arrangements

Modern UK banking products complicate the account-identification step far more than the valuation step. A single customer relationship can present as one product while operating several distinct currency balances, each with its own identifier. The safest working assumption is that where a balance has its own account number or currency identifier and can be independently credited, debited and statemented, it is an account for reporting purposes and should appear in its own right. Aggregating several currency sleeves into a single reported line understates the account count and, where the sleeves peak at different moments, can also misstate value.

Offset and sweep arrangements need particular care. A liability is not a reportable financial account, so the mortgage or facility itself falls outside Form 114. The deposit balance that sits alongside it does not. Where a dollar deposit is held at a UK bank and used to reduce interest on a sterling facility, the deposit remains a foreign financial account with its own maximum value, notwithstanding that the client experiences it as a net position. The same applies to a sweep account that automatically moves surplus dollars into an overnight or notice product: the destination balance is an account, and the sweep mechanism means its peak may occur on a date that appears nowhere in the client's own records.

Treat each separately identified currency balance as its own account unless the bank confirms there is a single account number
Report the deposit side of an offset arrangement at its gross maximum value; do not net it against the associated facility
Ask the bank for full-year transaction histories on sweep and notice products, because monthly statements may not show intra-month peaks
Check whether the dollar sleeve carries a distinct IBAN or account number, which is usually decisive
Capture accounts you can sign on but do not own, including family or company accounts held at UK institutions
Log the opening and closing dates of short-life accounts, because closure does not remove the filing obligation for that year

Why Wealthy Clients Open UK Dollar Accounts in the First Place

Understanding the origin of these accounts explains why they are so consistently omitted. Three patterns account for most of them. The first is a US property purchase: a UK-resident buyer accumulates the deposit and completion funds in a dollar account at their existing UK bank to avoid converting at an unfavourable moment, then wires the whole balance to a US title company. The account may exist for six weeks and touch seven figures. The second is a dollar-denominated bonus or carried interest distribution, paid by a US parent or a US fund into a UK dollar account and left there while the recipient decides what to do with it. The third is a share-sale settlement, where proceeds from a US-listed holding or a cross-border transaction land in dollars and sit pending reinvestment.

In all three cases the money is conceptually American, the counterparties are American, and the account is a transit point rather than a savings vehicle. None of that changes the answer. The account was maintained at an institution outside the United States, it exceeded the aggregate threshold, and it required reporting. Because these accounts are short-lived and often closed by year end, they also tend to be invisible on the following January's document gather, which is precisely how a single omission becomes a six-year pattern.

A Worked Scenario: Six Weeks, One Account, Four Missed Years

Marcus Ellery is a US citizen who has lived in London for eleven years and works in leveraged finance. In 2021 he contracted to buy an apartment in Miami. To avoid converting sterling at a poor rate close to completion, he opened a dollar account with his UK bank in February, funded it progressively to $1.62 million by late April, and wired the balance to the title company in May. The account stayed open with a nominal balance and was closed in 2024.

Marcus had filed FBARs every year for his sterling current account and his UK brokerage account. He did not list the dollar account for 2021, 2022 or 2023, on the reasoning that it held dollars, existed to buy American property, and paid no interest. On review, three points emerged. First, the 2021 report understated his aggregate foreign holdings by $1.62 million, because the maximum-value rule captures the April peak rather than the negligible year-end figure. Second, the 2022 and 2023 reports were also incomplete, because a dormant account is still an account. Third, the omission ran alongside otherwise clean filings, which is the classic evidential profile of inadvertence rather than concealment.

The correction required amended FBARs for each affected year, each one listing the dollar account at its true maximum value and preserving the previously reported accounts. It also required a documented explanation of why the account was opened, when it peaked, and why it was excluded. That narrative, supported by the bank's own transaction history and the completion statement, is the substance of the reasonable-cause position.

The Section 988 Trap That Convinces People No Report Is Due

There is a more sophisticated version of this mistake, and it tends to appear in clients who have had the currency analysis done correctly elsewhere. A US person's functional currency is the dollar. Holding and disposing of dollars therefore produces no foreign currency exchange gain or loss under the section 988 rules, because there is no non-functional currency in the transaction. A client who has previously been taken through the exchange-gain analysis on a sterling account, and who correctly concludes that the dollar account raises none of those issues, frequently draws the further conclusion that the dollar account is outside the foreign account regime altogether.

It is not. Section 988 is a rule about measuring income; FBAR is a rule about disclosing accounts. They operate on different statutes, answer to different agencies and share no thresholds. The absence of an exchange gain removes a line from the return. It removes nothing from Form 114. Where this reasoning has been applied consistently across several years, it also tends to have been applied to every dollar-denominated holding the client owns, so the review should extend to dollar share classes, dollar money market holdings and dollar cash balances inside UK investment accounts.

The UK Side Says Something Different, and That Makes It Worse

The second gap that catches sophisticated clients is a genuine divergence between the two systems, which is then over-extrapolated. HMRC's Capital Gains Manual at CG78321 confirms that from 6 April 2012 foreign currency bank accounts held by individuals are treated as simple debts, which do not give rise to chargeable gains or allowable losses in the hands of the original creditor. In other words, from the UK perspective, movements on a foreign currency bank account genuinely dropped out of the capital gains computation for individuals.

Clients who know this often carry it across the Atlantic. The reasoning runs that the account is invisible to HMRC's capital gains rules and produces no US exchange gain, so it is invisible to everyone. The UK simplification is real and it is correctly understood; it simply has no counterpart in the US disclosure regime. FBAR reporting is not a tax computation and does not depend on a chargeable event occurring. An account with no UK tax consequence and no US tax consequence is still an account that must be listed.

How Do You Fix a Missed FBAR on a UK Dollar Account Now?

The remediation landscape changed materially in 2026. The IRS withdrew its published Delinquent FBAR Submission Procedures page around 1 July 2026, and the page no longer resolves on IRS.gov. No replacement procedure has been published. Any guide still describing a guaranteed penalty-free route for filing late FBARs where income was fully reported is describing something that no longer exists in published form. The underlying law is unchanged, but the published assurance is gone.

Two routes remain, and the correct one depends on whether the omission was confined to the report or extended to the return. Where the dollar account produced no unreported income and the tax returns are otherwise complete, the position is a late-filed FBAR supported by reasonable cause. The IRS states on its own guidance pages that it will not penalise those who properly report a foreign financial account on a late-filed FBAR where the IRS finds reasonable cause for the late filing. The statutory hook sits at 31 USC 5321(a)(5)(B)(ii), which disapplies the non-willful penalty where the violation was due to reasonable cause and the balance in the account was properly reported. Both limbs must be satisfied, which is why the late report must be accurate as well as prompt.

Where income was also unreported, the Streamlined Foreign Offshore Procedures remain live and are the appropriate route for a non-resident filer. The non-residency test requires that, in any one or more of the last three years, the individual had no US abode and was physically outside the United States for at least 330 full days. A qualifying submission comprises amended or delinquent returns for the most recent three years, delinquent FBARs for the most recent six years for which the due date has passed, and a signed Form 14653 certifying that the failures resulted from non-willful conduct, which the IRS defines as negligence, inadvertence, or mistake, or conduct resulting from a good faith misunderstanding of the requirements of the law. The FBARs are filed through the BSA E-Filing System, selecting Other as the reason for late filing and entering Streamlined Filing Compliance Procedures in the explanation box.

What Is at Stake if a Missed FBAR Is Left Uncorrected?

The civil penalty framework sits in 31 USC 5321(a)(5). The non-willful ceiling is a statutory $10,000 per violation, and the willful ceiling is the greater of a statutory $100,000 or 50 percent of the balance in the account at the time of the violation. Both statutory figures are subject to annual inflation adjustment, so the amount actually in force for a given year should be checked against the current regulation rather than assumed. In Bittner v. United States, decided in February 2023, the Supreme Court held that the non-willful penalty is computed per report rather than per account, which materially limits exposure for filers with many accounts but does nothing for a filer whose reports were simply never complete.

Deadlines and records matter alongside the penalty analysis. The FBAR is due 15 April with an automatic extension to 15 October, it must be filed electronically through FinCEN's BSA E-Filing System, and the IRS states that filers must keep account records generally for five years from the FBAR due date. Separately, a dollar account at a UK institution may also be a specified foreign financial asset for Form 8938, where the thresholds for filers living abroad begin at $200,000 at year end or $300,000 at any point for a single filer, and $400,000 or $600,000 for joint filers. A dollar account large enough to be forgotten is often large enough to cross both.

The practical message for a high-net-worth filer is that this is a document problem before it is a legal one. Reconstruct the full-year history of every UK-held balance, dollar-denominated or not, establish each account's true peak, and produce a contemporaneous record of why the account existed. Accurate late reports supported by a coherent factual narrative are a substantially stronger position than incomplete reports filed on time.