Missed FBAR: Form 114a and BSA E-Filing for Late UK Account Reports

A missed FBAR is put right by filing FinCEN Form 114 electronically through FinCEN's BSA E-Filing System for each calendar year that was missed, selecting a reason for filing late inside the system itself, and retaining a signed FinCEN Form 114a wherever anyone other than the account owner presses the submit button. There is no ordinary paper route, the report is never attached to a Form 1040, and it is never posted to an IRS service centre. That is the entire mechanism, and it is the part almost every guide skips in favour of a general discussion of penalties.

The mechanics matter more now than they did a year ago. The IRS removed its Delinquent FBAR Submission Procedures page from irs.gov around 1 July 2026. There is no longer a named, publicly documented IRS route for late FBARs with its own published eligibility test, which means the two things you can actually control are the accuracy of the reports themselves and the quality of the record you build around them. For an American in London with a NatWest current account, a cash ISA, a share dealing account and a partnership capital account, that record is the file. This article walks the screens, the signatures and the evidence, in the order you will meet them.

Where does a missed FBAR actually get filed?

FinCEN Form 114, the Report of Foreign Bank and Financial Accounts, is an anti-money-laundering report filed with the Financial Crimes Enforcement Network under the Bank Secrecy Act. It is not a tax form. The IRS administers FBAR enforcement, but the filing itself goes to FinCEN, electronically, through the BSA E-Filing System at bsaefiling.fincen.gov. The IRS confirms on irs.gov/businesses/small-businesses-self-employed/report-of-foreign-bank-and-financial-accounts that filing must be done electronically and that a paper filing requires an exemption requested from FinCEN's Resource Center before you file. In practice nobody in our client base has ever needed one.

The obligation itself is unchanged for late years. A US person with a financial interest in, or signature or other authority over, one or more foreign financial accounts must file where the aggregate value of those accounts exceeded 10,000 US dollars at any time during the calendar year. The threshold is aggregate and it is a high-water mark, not a year-end balance. The report is due 15 April following the calendar year reported, with an automatic extension to 15 October that nobody has to request. Those points are set out at irs.gov/newsroom/details-on-reporting-foreign-bank-and-financial-accounts.

The BSA E-Filing System is a year-by-year system. Each calendar year is a separate report with its own submission, its own confirmation and its own identifier. Six missed years means six reports, not one catch-up filing. There is a drop-down for the calendar year being reported, and prior years remain selectable, which is precisely how late reports are made.

• One FinCEN Form 114 per calendar year, filed separately, each with its own reason for filing late
• Filed at bsaefiling.fincen.gov, not with the Form 1040 and not to any IRS address
• The 10,000 US dollar test is aggregate across all foreign accounts and applies to the highest balance at any point in the year
• A UK cash ISA, a stocks and shares ISA, a Premium Bonds holding at NS and I, a UK brokerage account and a UK business account are all reportable accounts, even where the income is tax free in the UK
• UK tax treatment is irrelevant to the reporting question, and paying UK tax correctly does not discharge the FBAR obligation

Which of the two filing routes applies to you?

There are two ways a late FBAR reaches FinCEN, and choosing between them determines whether Form 114a is needed at all.

The first route is filing your own report. FinCEN provides an individual filing option that does not require you to register or create a BSA E-Filing account. You complete the report, sign it electronically as the account owner and submit it. Because you are both the account owner and the filer, no separate authorization exists to sign. FinCEN sets out the routes at fincen.gov/how-do-i-file-fbar.

The second route is a third party filing on your behalf. Attorneys, certified public accountants, enrolled agents and firms that file for clients cannot use the individual option. They must be registered with the BSA E-Filing System as an institution, with a user identity issued by FinCEN, and they file as an authorised third party. That is where FinCEN Form 114a becomes mandatory. The distinction catches people out because the individual option is easy to find and easy to use, but a spouse filing for the other spouse, or a family office employee filing for a principal, is not the account owner filing their own report. Anyone submitting a report that is not their own needs the authorization in hand before submission.

What is FinCEN Form 114a and why does it never go to FinCEN?

FinCEN Form 114a, the Record of Authorization to Electronically File FBARs, is the signature document by which an account owner authorises somebody else to transmit their FBAR. It is the FBAR equivalent of a signature authorisation, and it is the single most commonly mishandled piece of paper in a late-filing project.

The form has two parts. Part I is completed and signed by the account owner, and by the spouse where a joint report is being filed. Part II identifies the third party who will transmit the report, with the preparer name, identifying number and firm details, and carries the preparer signature confirming the FBAR will be filed as directed. Both parts are dated.

The critical instruction is printed on the form itself: it is not sent to FinCEN. The account owner and the authorised filer each keep a copy, and it is produced only if FinCEN or the IRS asks for it. The retention period stated on the form is five years, matching the FBAR record retention rule. So the authorization never appears in the submission, never generates an acknowledgement, and leaves no trace in the BSA system. If it is missing, nobody tells you. You discover the gap only when somebody asks for it, which by definition is the worst moment to discover it. In the late-filing work we prepare, the 114a set is assembled and scanned before a single report is transmitted, precisely because there is no system-side safety net.

How do you choose the reason for filing late?

When the calendar year selected in the BSA E-Filing System is a year whose deadline has passed, the system requires a reason for filing late before it will accept the report. This is a mandatory selection, not an optional comment. The list of standard reasons covers the ordinary human explanations: forgetting to file, not knowing the requirement existed, believing the balance was below the threshold, not realising the account counted as foreign, statements not received or lost, information arriving late, and being unable to obtain a joint spouse signature in time. There is also an option for a reason not on the list, which opens a free-text box.

Two things follow from that design. First, if you are filing under the Streamlined Filing Compliance Procedures, the IRS instruction is specific and non-negotiable: select the other option and enter the words Streamlined Filing Compliance Procedures in the explanation box. That instruction is published at irs.gov/individuals/international-taxpayers/u-s-taxpayers-residing-outside-the-united-states. Using a canned reason instead of the required wording detaches the FBAR filings from the streamlined submission in FinCEN's records, and there is no elegant way to repair that afterwards.

Second, where streamlined is not in play, the free-text box is a drafting exercise, not a tick-box. It is short, and it is the only narrative FinCEN will ever hold about why the report is late. A sentence that is accurate, specific and consistent across all six years is worth far more than a vague one. Consistency is the point. If year 2019 says the account statement was lost and year 2020 says the requirement was unknown, the file contradicts itself. Pick the reason that is genuinely true across the period and use it uniformly, unless the facts really did change mid-period.

• The late reason is mandatory and is captured inside the report, not in a covering letter
• Streamlined filers must use the other option with the exact words Streamlined Filing Compliance Procedures
• The free-text explanation should be identical, or deliberately and defensibly different, across every late year
• The explanation must not contradict the narrative in a Form 14653 certification if one is being filed
• Never describe conduct in the box that you have not thought through with the rest of the file in front of you

When can spouses file one joint FBAR, and when can they not?

The joint report is an exception, and it is narrower than most people assume. The IRS states that a married couple may file a single FBAR only where all of the reportable financial accounts of the non-filing spouse are jointly owned with the filing spouse, and where the couple completes and signs FinCEN Form 114a. Income tax filing status is irrelevant. A couple filing separately for US income tax purposes can still use the joint FBAR exception, and a couple filing jointly cannot use it if the conditions are not met.

The condition that kills joint reports in the UK is ordinary and easy to miss. One single account in one spouse's sole name breaks it. A dormant Halifax savings account opened before the marriage, a workplace share incentive plan account, an old building society passbook account, a sole-name ISA, and the exception is gone for that year. An ISA is worth calling out specifically, because ISAs cannot be held jointly under UK rules. If either spouse holds an ISA, that spouse holds a reportable account that is not jointly owned, and the joint FBAR exception fails on its face for every year the ISA existed.

The consequence for a late-filing project is structural. Each spouse files their own FinCEN Form 114 for each affected year, reporting the jointly held accounts in full on both reports. Joint accounts are reported at their full maximum value on each owner's report, not split. Two spouses with six missed years therefore produce twelve reports, twelve late-filing reasons and, where a preparer transmits them, twelve authorizations.

Is it an original late report or an amendment?

These are different filings and the distinction is often blurred. An original late report is a year for which nothing was ever filed. An amendment is a year where a report was filed but was wrong, incomplete or missed an account. The BSA system asks you to identify which you are doing at the top of the report.

An amended report requires the prior report BSA Identifier, the number FinCEN issued when the original was accepted. That identifier is delivered by email and through the secure messaging area of the BSA E-Filing System at the time of the original submission. Years later, when the original was filed by a preparer who has since been replaced, or through the individual option with a confirmation email long deleted, the identifier is frequently unrecoverable. FinCEN's line item instructions anticipate this and direct the filer to fill the identifier field with zeros rather than leave it blank, so the amendment can be processed. An amended report must be complete in itself. It replaces the original, so every account is re-entered, not just the one being corrected.

A practical warning. Where a year was filed but omitted an account entirely, resist the instinct to file a second original for the missing account. That produces two competing reports for the same year. Amend the year, list all accounts, and keep the working papers that show what changed and why.

How do you sequence Form 114a signatures across six delinquent years?

This is the point at which orderly projects come apart, and no competitor guide addresses it. Form 114a authorises the electronic filing of an FBAR. It is tied to the reports being authorised, which means a six-year catch-up needs the authorization to cover all six years, and the cleanest approach is one authorization per report year rather than a single global sheet. That gives you a one-to-one match between an authorization and a submission acknowledgement, which is exactly what you want in a file that may be read cold years later.

The order of signature matters. The account owner, and the spouse where a joint report genuinely qualifies, sign Part I first. The preparer signs Part II afterwards. The preparer then transmits. A preparer signature dated before the owner signature, or a transmission dated before either, is an obvious defect on the face of the document. It is also entirely avoidable.

• Prepare one Form 114a per calendar year being filed, clearly identifying the report year on each
• Owner signs Part I first, then spouse where the joint exception genuinely applies, then the preparer signs Part II
• Every signature is dated, and no date precedes the date of the authorization it depends on
• Transmit only after the full signature set for that year is complete and scanned
• Match each acknowledgement and BSA Identifier to its authorization in a single index
• Both the owner and the filer retain their copies for five years

One more sequencing point. If the couple has separated or one spouse is uncooperative, the joint report simply cannot be filed, because Part I requires the non-filing spouse to sign. That is why one of the standard late-filing reasons refers to being unable to obtain a joint spouse signature in time. In that situation each spouse files individually rather than waiting, because waiting is the worse outcome.

How do you evidence a maximum account value when a UK bank will not produce old statements?

This is the practical bottleneck in almost every UK catch-up. FBAR asks for the maximum value of each account during the calendar year, converted to US dollars using the Treasury Reporting Rates of Exchange for the last day of the year reported, which the Bureau of the Fiscal Service publishes at fiscaldata.treasury.gov. Note that this is a different rate source from the ones used for income tax purposes on the Form 1040, and mixing them is a common and avoidable error.

UK banks routinely hold customer records for around six years, and online banking portals typically show far less than that. A request for 2018 statements on a closed account often produces nothing at all. The standard applied by FinCEN is a reasonable approximation of the greatest value in the account during the year, based on periodic account statements where they exist. The form does carry an indicator for a maximum value that cannot be determined, but treat that as a genuine last resort. A report with an approximation supported by working papers is a far stronger document than one that declares the value unknown.

The lever most people never use is the UK data protection regime. Under UK GDPR you have a right of access to the personal data a UK bank holds about you, and that right covers transaction and account records. The Information Commissioner's Office explains the process at ico.org.uk. A subject access request is normally free and the organisation must normally respond within one month, which is materially faster and more reliable than a general customer service request for archived statements. Address it to the bank's data protection officer, name the accounts and the exact date range, and ask for transaction data rather than formatted statements, because banks can often produce raw data for periods where they cannot regenerate a statement.

• Make a subject access request in writing to the bank's data protection officer, specifying accounts and date range
• Ask for transaction level data, not only reproduced statements, and ask for closure balances on closed accounts
• Reconstruct from what else survives: annual interest certificates, ISA annual statements, mortgage redemption figures, employer share plan records, contract notes from a UK broker and P60 or self assessment records showing UK interest
• Where an account funded a known event, such as a property completion or a bonus receipt, use the surrounding documents to fix the high point
• Round the approximation upward rather than downward, document the method in a memorandum, and keep the memorandum with the filing

What if the underlying US returns are wrong as well?

The BSA E-Filing route deals with the report. It does not fix a Form 1040 that omitted UK interest, dividends, rental profit or gains from a UK brokerage account. Where the income was never reported, the FBAR is a symptom rather than the disease, and the Streamlined Filing Compliance Procedures are the framework the IRS publishes for taxpayers whose failures were non-willful.

For a US citizen living in the UK, the Streamlined Foreign Offshore Procedures at irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures require three years of delinquent or amended income tax returns, six years of delinquent FBARs, and a signed certification on Form 14653 that the conduct was non-willful. Eligibility turns on a non-residency test, which for a US citizen means that in at least one of the three years there was no US abode and the individual was physically outside the United States for at least 330 full days. The FBARs are still filed through the BSA E-Filing System in exactly the way described above, with the other reason selected and the streamlined wording entered.

The sequencing question we are asked most often is whether the FBARs go first. The answer is that the streamlined submission is a package and the pieces must be internally consistent. The accounts on the six FBARs, the income on the three returns and the narrative on the Form 14653 have to describe the same facts. Filing FBARs early, before the return positions are settled, is how a file ends up with a report showing an account that the certification does not mention.

A worked example: six years of missed UK account reports

The following is an illustration only, with figures and exchange rates assumed for clarity rather than drawn from any actual filing. Assume a dual US and UK citizen working in corporate finance in London, married to a British spouse who is not a US person. Assume the couple holds a joint Barclays current account, that the US spouse holds a sole-name stocks and shares ISA and a sole-name UK brokerage account, and that no FBAR has ever been filed. Assume the joint account peaked at 180,000 pounds in one year, the ISA at 90,000 pounds and the brokerage account at 240,000 pounds, and assume a year-end Treasury rate of 1.25 US dollars to the pound purely for illustration.

The mechanics fall out as follows. The non-US spouse has no FBAR obligation at all, so no joint report question arises on their side. The US spouse alone files. The joint current account is reported in full at its maximum, not at half, so the illustrative 180,000 pounds converts to 225,000 US dollars. The ISA and the brokerage account are reported at their own maxima. The aggregate is far above the threshold, and it would have been above it on the current account alone.

• Six separate FinCEN Form 114 submissions, one per calendar year, each listing all three accounts
• Six late-filing reason selections, consistent across the years
• Six Form 114a authorizations if a preparer transmits, each signed by the US spouse and then by the preparer, retained and never sent to FinCEN
• A maximum value memorandum per account per year, supported by whatever the subject access request produced
• Three years of amended or delinquent Form 1040 returns reporting the ISA and brokerage income, since neither is tax free for US purposes despite the UK treatment
• A Form 14653 narrative consistent with the late-filing wording used inside the reports

Note what the illustration does not include. It does not include a spouse joint report, because the ISA in sole name would have prevented one even if the spouse had been a US person. That single fact changes the shape of the whole project.

What records must you keep once the late reports are filed?

The recordkeeping rule is separate from the filing rule and it survives the filing. The IRS states that records must be kept generally for five years from the FBAR due date, and specifies what those records must show: the name maintained on the account, the account number, the name and address of the financial institution, the type of account, and the maximum value during the reporting period.

For a late-filing project the file should also hold the submission acknowledgements and BSA Identifiers for each year, the Form 114a set, the maximum value memoranda and the subject access request correspondence with the bank. Where a UK institution could not produce records, keep the refusal. Evidence that you asked and were told no is itself evidence of the diligence behind an approximation, and it costs nothing to file the email.

What does the UK side of the file look like?

Nothing about a missed FBAR is filed with HMRC, and the FBAR has no UK equivalent. What the UK side supplies is data and corroboration. Under the automatic exchange of information framework described at gov.uk/guidance/automatic-exchange-of-information-introduction, UK financial institutions report on US customers holding accounts with them, and HMRC passes that information to the United States. Your UK bank has, in many cases, already told HMRC about the account, and HMRC has already told the IRS.

The practical consequence is that a late report is rarely the first the US authorities have heard of a UK account. That is an argument for accuracy rather than for panic. The account details on your report should be capable of matching what the institution reported, which means using the institution's legal name, the full account number without spaces or punctuation, and the correct account type. A mismatch between a self-reported account and an institution-reported account creates a question that would not otherwise exist.

Practitioners should also note that UK-side documents are the best available evidence for the US filing. Annual ISA statements, interest certificates, broker contract notes and self assessment records showing UK interest are all admissible working papers for a maximum value approximation, and they are frequently easier to obtain than bank statements.

The failure modes we see most often

• Attaching Form 114 to a Form 1040 or posting it to an IRS address, where it simply does not exist as a filing
• A preparer transmitting reports with no Form 114a signed, or with the preparer signature dated before the owner signature
• Assuming a joint report is available when one spouse holds an ISA or any other sole-name reportable account
• Filing a second original report for a year that was already filed, instead of amending it
• Using the income tax exchange rate rather than the Treasury Reporting Rates of Exchange for 31 December
• Reporting half of a joint account balance rather than the full maximum value
• Ticking a standard late reason on a streamlined submission instead of entering the required streamlined wording
• Treating the withdrawn IRS delinquent FBAR page as if it were still a live named route with published eligibility

None of these are difficult to avoid. They persist because the FBAR sits outside the tax return process, uses its own system, its own identifiers and its own authorization document, and because the guidance available online concentrates on penalty exposure rather than on the eight or nine screens that actually decide whether the filing is clean. Get the sequence right, keep the paper, and a missed FBAR becomes a defined administrative exercise rather than an open question. FinCEN publishes the current filing guidance at fincen.gov/report-foreign-bank-and-financial-accounts, and its Resource Center can be reached on 800-949-2732 or at FRC@fincen.gov for system and access questions.

Related reading and tools

• US Tax Services & IRS Compliance
• UK Tax Services
• IRS Streamlined Filing
• UK Income Tax Calculator
• US Federal Income Tax Calculator

Every situation is different. Book a cross-border tax consultation to discuss how these rules apply to you.

Authoritative sources

IRS — Streamlined Filing Compliance Procedures

FinCEN — Report of Foreign Bank and Financial Accounts (FBAR)

HM Revenue & Customs

GOV.UK — Tax on foreign income

IRS — Foreign Earned Income Exclusion

IRS — Foreign Tax Credit

ICAEW

Chartered Institute of Taxation (CIOT)

AICPA

MoneyHelper (UK)