Do I report the whole joint account on my FBAR or just my share?

The whole account. The IRS states that where two people jointly own a foreign financial account, each person must report the entire value of the account, and IRM 4.26.16 confirms that account values are not prorated between holders. You report the greatest value the account reached at any point in the calendar year, converted to US dollars at the Treasury Bureau of the Fiscal Service rate for the last day of that year. Your ownership percentage and your contributions to the account are irrelevant.

Can we file one FBAR together using Form 114a if only I am American?

The question does not arise, because the spouse exception only relieves a spouse who already has a filing obligation. Your British spouse has none, so there is nothing to combine. You file alone, reporting the joint accounts at full value, and your spouse signs nothing. Form 114a is still used in your case if a professional firm files on your behalf, since it is the authorisation for that filing. The IRS confirms Form 114a is retained for your records, not submitted.

I was added to my British husband's UK account only for convenience - is it reportable?

Yes. The FBAR tests legal title and control rather than who funded the account. IRM 4.26.16 confirms a direct financial interest exists where you are the owner of record or hold legal title, whether the account is maintained for your benefit or for the benefit of others. Even without ownership, the ability to direct the bank to move funds is signature authority, which is an independent trigger. Never having used the account does not remove the filing duty, though it is relevant to any later penalty discussion.

Can I still file late FBARs penalty-free in 2026?

Not under a published guarantee. The IRS removed its Delinquent FBAR Submission Procedures page on 1 July 2026, and its FBAR page now says filing late or not at all is a violation that may subject you to penalties, and directs you to file as soon as possible to keep potential penalties to a minimum if you have not been contacted. IRM 4.26.16 still allows examiners to decline to assert a penalty, and a non-willful penalty should not apply where reasonable cause is shown and accurate FBARs are filed.

Missed FBAR: Joint Accounts With a Non-US Spouse

Q: Does my non-US spouse have to file an FBAR?

No, unless they are a US person in their own right. The FBAR obligation applies to US citizens, US residents including green card holders, and US entities. A British spouse with none of those connections has no FinCEN Form 114 duty, even where the joint account is large and even though you must report that account at its full value on your own filing. Check the status question carefully, because an unabandoned green card or a US birthplace can create US person status unexpectedly.

Q: Will my UK bank already have told the IRS about our joint account?

Very possibly. GOV.UK confirms the UK-US agreement requires UK financial institutions to report to HMRC on US customers holding accounts with them, and HMRC passes that information on. HMRC's manual at IEIM402140 states that each holder of a jointly held account is attributed the entire balance of the account. So the figure reaching the IRS about your UK joint account is the full balance, attributed to you as the American holder, which is exactly the figure a missing FBAR fails to report.

Missed FBAR filings on accounts held jointly with a non-US spouse are among the most common compliance failures we see in US citizens living in the United Kingdom, and the answer to the question that brings most people to this page is blunt: yes, the joint account is reportable, and you report the entire maximum balance, not your half. The IRS states the rule without qualification - if two people jointly own a foreign financial account, each person has a financial interest in that account, and each person must report the entire value of the account on an FBAR. Your spouse being British changes nothing about your own obligation. The money originating from their salary, their family or the sale of a flat they bought years before you met changes nothing either. What their non-US status does change is whether they have any filing duty of their own, and whether the two of you can lawfully collapse the exercise into a single filing rather than two.

That distinction matters enormously in practice, because most of the anxiety we encounter in these cases is not about the US person's own exposure. It is about whether a British spouse who has never had any connection to the United States is being dragged into the American tax system by a form they did not know existed. They are not. But the mechanics need to be handled precisely, and where several years have been missed on a large joint balance, the order in which the filings are made now matters more than it did a year ago.

Do I report the whole joint account on my FBAR, or only my half?

The whole account. There is no proration on FinCEN Form 114 and there never has been. The IRS guidance on reporting foreign bank and financial accounts states that where two people jointly own an account, or several people each own a partial interest, each person must report the entire value of the account. The Internal Revenue Manual at IRM 4.26.16 repeats the point from the examiner's side: each US person with an interest in a jointly owned account has a financial interest in it, the entire account value is reported on each FBAR, and accounts are not prorated between holders.

This is the single most expensive misunderstanding in this area, because it feeds directly into the threshold test. A couple with a joint current account that peaked at the equivalent of 9,000 dollars and a joint savings account that peaked at the equivalent of 8,000 dollars will often conclude that neither account crosses the reporting line and that their half of each is smaller still. Both conclusions are wrong. The FBAR looks at the aggregate of the maximum values of every reportable account, at full value, and that couple is over the line.

The value reported is the greatest value held in the account at any point during the calendar year. The IRS instructs filers to figure that maximum in the currency of the account and then convert it to US dollars using the Treasury Bureau of the Fiscal Service exchange rate on the last day of the calendar year - not the rate on the day the peak occurred, and not an average rate. For sterling accounts held through a year of currency movement, using the wrong convention can shift a reported figure materially, and on a large joint portfolio that inaccuracy is visible.

Does my non-US spouse have to file an FBAR?

No, unless they are themselves a US person. The FBAR obligation attaches to US persons, which the IRS defines to include US citizens, US residents, and domestic entities. A British spouse who is not a US citizen, does not hold a green card and does not meet the substantial presence test has no FinCEN Form 114 obligation of their own, no matter how large the joint balance is and no matter that the account is reported in full on their American spouse's FBAR.

It follows that when only one of you is a US person, there is only ever one FBAR in the picture. That sounds obvious, but it disposes of a surprising amount of confusion, because much of the published material on joint FBAR filing is written for couples where both spouses are Americans. The rules about combining two filings into one simply do not engage where the second spouse never had a filing requirement to begin with. Your filing covers the joint accounts because you have a financial interest in them. Your spouse's absence from the FinCEN system is the correct outcome, not an omission that needs curing.

One caution: US person status is a matter of fact, not of self-identification, and we see it acquired accidentally. A British spouse who spent years in the United States on a green card that was never formally abandoned may still be treated as a lawful permanent resident for tax purposes. A spouse born in the United States to British parents is a US citizen whether or not they have ever held the passport. Before concluding that a non-filing spouse has no obligation, that status question has to be answered properly rather than assumed.

How does the $10,000 aggregation rule actually work across UK accounts?

The threshold is not per account and it is not a year-end snapshot. An FBAR is required where the aggregate value of all foreign financial accounts in which the US person has a financial interest or over which they have signature authority exceeded 10,000 dollars at any time during the calendar year reported. Three features of that sentence catch people out repeatedly.

Aggregate, not individual. Every reportable account is added together at its own maximum value. Six UK accounts that each peaked at the equivalent of 3,000 dollars produce an aggregate well over the threshold even though no single account came close.
At any time, not on 31 December. A balance that existed for one afternoon counts. Proceeds from a UK property sale that sat in a joint account for six weeks before being reinvested set the maximum value for that account for the entire year.
Full value on joint accounts, counted for each US holder. The joint account is not halved before it is added to the aggregate, and if both of you happened to be US persons, the same balance would appear at full value on both filings.
Signature authority counts even without ownership. IRM 4.26.16 describes signature authority as existing where an individual, alone or with another, can control the disposition of money or assets in the account by direct communication with the institution holding it.
The threshold is tested in US dollars, so sterling balances that sit comfortably below 10,000 pounds for most of a year can still cross the line once converted at the year-end Treasury rate.

For the high-net-worth households we act for, the aggregation test is almost never the difficult question - a joint offset mortgage savings pot alone will usually settle it. What matters is completeness. An FBAR that reports four accounts when seven were reportable is a defective filing, and defective filings are harder to remediate than absent ones because they establish that the filer knew about the regime.

When can we use FinCEN Form 114a and file a single FBAR?

FinCEN Form 114a, Record of Authorization to Electronically File FBARs, does two quite different jobs, and conflating them causes real errors. Its first job is to support the spouse exception, under which a spouse who would otherwise have to file need not do so. The IRS sets out three conditions, all of which must hold.

Every foreign financial account that the non-filing spouse is required to report is jointly owned with the filing spouse. A single account in the non-filing spouse's sole name destroys the exception, even a dormant one.
The filing spouse reports all of those jointly owned accounts on a timely filed FBAR that is electronically signed.
Both spouses complete and sign FinCEN Form 114a. The IRS is explicit that you do not submit Form 114a with the FBAR - you keep it for your records.

If any condition fails, the position reverts to the default: both spouses are required to file separate FBARs, and each reports the full value of the jointly owned accounts. Note the word timely in the second condition. The spouse exception is built around a timely filed return, which is precisely what is absent in a missed FBAR case. Where a couple who are both US persons are catching up on prior years, we generally prepare separate filings for those years rather than attempting to shelter one spouse behind an exception whose own conditions are not satisfied.

The second job of Form 114a is ordinary preparer authorisation. When a professional firm files your FBAR through the BSA E-Filing System, you sign a Form 114a authorising that filing. This use has nothing to do with marriage and applies equally to a single filer. It is retained, not submitted, and it should be kept alongside the account records that the IRS expects you to hold for five years from the FBAR due date.

What happens when only one spouse is a US person?

This is the configuration that describes most American households in the UK, and it is simpler than the literature suggests. The spouse exception is irrelevant to you. It exists to relieve a spouse who has a filing obligation from having to discharge it separately. A British spouse with no US status has no obligation to relieve. There is nothing for them to be excepted from, and no Form 114a is needed to establish that.

The practical consequences are worth stating plainly, because they are the reassurance most non-US spouses are looking for. Your spouse does not sign your FBAR. Your spouse does not obtain a US taxpayer identification number in order for you to file it. Your spouse does not become a US filer, does not acquire a US tax residence, and does not acquire any US reporting duty in respect of their own separate UK accounts, investments or business interests by virtue of appearing on your form. Your US income tax filing status is a separate question entirely and does not drive the FBAR analysis in either direction.

I was added to the account purely for convenience - is it still reportable?

Almost certainly yes, and this is where good-faith non-compliance most often originates. The FBAR tests legal title and control, not economic benefit. If you are an owner of record or hold legal title to the account, you have a direct financial interest in it, and IRM 4.26.16 makes clear that this holds whether the account is maintained for your own benefit or for the benefit of others. Even where you are not an owner, the ability to direct the disposition of funds by instructing the bank is signature authority, and signature authority is an independent reporting trigger.

So the American spouse added to a British spouse's long-standing savings account so that either of them can move money reports it. The US person added to an elderly parent-in-law's UK current account to help manage their affairs reports it. The founder who is a signatory on a UK company account reports it under the signature authority rules even though not a penny of it is theirs. None of these people put money in. All of them have a reporting obligation, and the fact that they never used the access is not a defence to the filing requirement, though it is highly relevant to how a penalty question is approached later.

Which UK accounts get missed most often?

The FBAR reaches financial accounts held at institutions located outside the United States. UK households hold a wider variety of these than the American terminology suggests, and the products that get overlooked are usually the ones that do not feel like bank accounts.

Joint current accounts and joint instant-access savings accounts, including premium and reward accounts marketed with monthly fees and interest tiers.
The linked savings pot inside a UK offset mortgage arrangement. The mortgage itself is a liability and not reportable, but the offset savings account is a separate account held at the lender and is frequently reportable in its own right - and it often carries a very large balance for a household that is offsetting a substantial loan.
Cash ISAs and stocks and shares ISAs. An ISA is free of UK tax but the UK wrapper has no effect on US reporting, and the underlying account remains a foreign financial account.
Joint general investment accounts and platform accounts, including cash held on the platform awaiting investment.
Building society accounts, fixed-term bonds and notice accounts opened for a single deposit and then forgotten.
NS&I products, which should be reviewed on their own terms rather than assumed to fall outside the definition because they are government-backed.
Escrow or client accounts holding UK property sale proceeds where the US person has control over the funds.
Foreign currency accounts and multi-currency e-money accounts used for cross-border salary or dividend receipts.

For clients with UK business interests, the account inventory usually needs to extend beyond the household. Accounts of a UK company over which a US shareholder or director has signature authority are reportable by that individual under the signature authority rules, and those filings are missed at least as often as personal joint accounts.

A worked example: ten years missed on a joint UK portfolio

The following illustration uses fictional people and figures chosen to show how the mechanics interact. Nathan is a US citizen who moved from Boston to London in 2015 and works in structured credit. Imogen is British, has never lived in the United States and has no US status of any kind. They married in 2017 and hold their UK affairs jointly.

Their reportable accounts for the 2024 calendar year, expressed at their maximum values, were a joint current account that peaked at 84,000 pounds when Nathan's bonus landed, a joint offset savings pot averaging 310,000 pounds against their Wandsworth mortgage, a joint investment platform account holding 620,000 pounds, Nathan's sole-name UK current account at 22,000 pounds, and a joint fixed-term deposit of 150,000 pounds opened with the proceeds of Imogen's pre-marital flat sale. Nathan also became a signatory on his UK employer's petty cash account holding around 9,000 pounds.

Nathan reports every one of those accounts, at full value, on his own FinCEN Form 114 - including the fixed-term deposit funded entirely by Imogen's property, and including the employer account he has never touched. Imogen files nothing. The aggregate is far above the 10,000 dollar threshold, which in a case like this is never the interesting question. The interesting question is that Nathan filed no FBAR at all for the ten years from 2015, having assumed throughout that a joint account with a British wife was a British matter.

The consequences of that assumption are not evenly distributed across the ten years. The offset savings pot and the platform account were funded from Nathan's post-tax UK earnings and generated interest and dividends that were, in fact, reported on his US returns because his return preparer had the tax vouchers even though nobody asked about the FBAR. That distinction - income correctly reported, form not filed - is the pivot on which the whole remediation strategy turns, and it now turns differently than it would have done in 2025.

Missed FBAR catch-up routes after 1 July 2026

Until recently, a case like Nathan's had an obvious home. The IRS operated Delinquent FBAR Submission Procedures, under which a taxpayer who had properly reported and paid tax on the income from the accounts, and who had not been contacted about the missing forms or placed under examination, could file the late FBARs with an explanation and the IRS undertook not to impose a penalty. On 1 July 2026 the IRS removed that page from its website. The URL now returns a not-found error, and the removal was made without an accompanying announcement.

The current IRS FBAR page states the position differently. It says that filing an FBAR late or not at all is a violation and may subject you to penalties, and that if the IRS has not contacted you about a late FBAR and you are not under civil or criminal investigation, you should file late FBARs as soon as possible to keep potential penalties to a minimum. That is a materially weaker formulation than the withdrawn undertaking. It is not, however, an announcement that late filers will be penalised. The IRS still directs late filers to explain their reason for filing late and to follow the instructions for a specific compliance option where one is being used.

The underlying penalty framework is unchanged and remains the better guide to likely outcomes. IRM 4.26.16 records that examiners may determine that the facts and circumstances of a particular case do not justify asserting a penalty at all, and that a non-willful penalty should not apply where the violation was due to reasonable cause and accurate delinquent or amended FBARs are filed. Penalty ceilings under 31 USC 5321 are adjusted annually for inflation, with the current figures published at 31 CFR 1010.821, which is why any specific dollar amount quoted in an article older than a few months should be treated with suspicion. The practical implication of the July 2026 change is one of sequencing and documentation: the contemporaneous reasonable cause record now has to be built into the submission rather than relied on as a backstop, and the window before any IRS contact is worth more than it was.

How do the Streamlined Foreign Offshore Procedures work in a mixed-nationality household?

Where the missed FBARs sit alongside unreported income or unfiled returns, the Streamlined Foreign Offshore Procedures remain available and are the route we most often use for US citizens resident in the UK. The IRS conditions for taxpayers residing outside the United States are specific.

The non-residency requirement: in at least one of the relevant years the individual had no US abode and was physically outside the United States for at least 330 full days.
Returns for each of the most recent three years for which the US tax return due date, or properly extended due date, has passed.
FBARs for each of the most recent six years for which the FBAR due date has passed - a longer look-back than the income tax component, which is why a household can end up filing six FinCEN Form 114 reports and three returns.
A signed certification that the failure to file returns, report income, pay tax and submit required information returns including FBARs resulted from non-willful conduct.
Eligible taxpayers who comply will not be subject to failure-to-file and failure-to-pay penalties, accuracy-related penalties, information return penalties, or FBAR penalties.

In a household like Nathan and Imogen's, only Nathan enters the procedure. Imogen is not a party to it, does not sign the certification and does not appear as a filer. Her details appear only where the FBAR form itself calls for information about a joint account holder. The certification is drafted around Nathan's own conduct and understanding, and in our experience the joint-account facts - that the accounts were opened in the ordinary course of a UK marriage, held at high-street UK institutions, funded from taxed UK earnings and never concealed - are among the strongest evidence of non-willfulness available.

What has our UK bank already reported about the joint account?

More than most clients expect, and the answer explains why missed FBARs on large joint balances are a poor risk to carry. GOV.UK guidance on automatic exchange of information confirms that the agreement between the UK and the USA requires UK financial institutions to report to HMRC on US customers who hold accounts with them, and that HMRC then shares that information with the relevant country. This is why UK banks send self-certification letters asking whether you are a US citizen or US tax resident, and why an American place of birth on a passport prompts follow-up correspondence.

The detail that matters here is how a joint account is treated in that reporting. HMRC's International Exchange of Information Manual at IEIM402140 states that each holder of a jointly held account is attributed the entire balance or value of the joint account, as well as the entire amounts paid or credited to it. The manual illustrates the point with a joint account holding 60,000 pounds, which is reported at 60,000 pounds for a reportable holder rather than at half that figure. In other words the UK side of the exchange mirrors the FBAR rule exactly. Where a US citizen holds a UK joint account with a non-US spouse, the figure travelling from the UK institution through HMRC to the IRS is the whole balance, attributed to the American holder alone. A missing FinCEN Form 114 is therefore missing against a number the IRS may already hold.

How is my non-US spouse's privacy handled?

This concern is raised in almost every mixed-nationality engagement and it deserves a direct answer rather than reassurance. FinCEN Form 114 contains a dedicated part for accounts owned jointly, which captures the number of joint owners and identifying details for the principal joint owner, including name and address, together with a taxpayer identification number where one exists and is known. A British spouse who has never had any US connection will not have a US taxpayer identification number, and the form does not require you to obtain one for them. Nothing on the form asks for a UK National Insurance number or a Unique Taxpayer Reference.

What that disclosure does not do is equally important. It does not enrol your spouse in the US tax system, create a filing history for them, or give the IRS a basis to seek information about their separate UK affairs. It does not require them to sign anything. Where a spouse is genuinely uncomfortable, the practical alternative is structural rather than procedural: converting joint holdings into separate accounts changes what is reportable in future years, though it obviously does nothing about years already missed, and it should be weighed against the UK legal and financial consequences of unpicking joint ownership. On the UK data protection side, the disclosure is made by you as the account holder in discharge of a legal obligation in the United States, and it sits alongside the far broader disclosure the UK bank is already making under the intergovernmental agreement described above.

Does the joint account also go on Form 8938?

Often, and the two regimes must be run separately because neither substitutes for the other. The IRS comparison of Form 8938 and FBAR requirements states that the Form 8938 filing requirement does not replace or otherwise affect the obligation to file FinCEN Form 114. The thresholds differ sharply. For taxpayers living outside the United States who are unmarried or married filing separately, Form 8938 is required where the total value of specified foreign financial assets exceeded 200,000 dollars on the last day of the tax year, or 300,000 dollars at any time during the year. For a married couple filing a joint return the figures are 400,000 dollars and 600,000 dollars. A US citizen married to a non-US spouse will very often be filing separately, so the lower pair applies, and a household that comfortably clears the joint thresholds on paper can find that the individual filer is over the line by a wide margin. Where FBARs have been missed, Form 8938 has usually been missed with them, and the remediation has to address both.

How we prepare a missed FBAR catch-up filing

Our work on these engagements is tax preparation and compliance, and it begins with an account inventory rather than with forms. We reconstruct every UK account in which the US person held legal title or signature authority across the look-back period, including accounts closed part-way through a year, which are reportable for the year in which they existed. We obtain maximum-value evidence for each account year by year, convert at the correct Treasury year-end rate, and reconcile the resulting figures against what the UK institutions are likely to have reported through HMRC, so that the filing is consistent with the data already in the IRS system.

We then determine the correct route - late filing with a properly drafted explanation where income was fully reported, or the Streamlined Foreign Offshore Procedures where returns or income were also affected - and we document the reasonable cause narrative contemporaneously rather than reactively. For households where only one spouse is a US person, we keep the non-filing spouse out of the US system entirely, limiting their involvement to the joint-owner information the form itself requires. Given the July 2026 withdrawal of the delinquent FBAR route and the fact that both the streamlined procedures and any late-filing relief depend on the IRS not having contacted you first, the value of acting before that contact is now the single most important variable in the outcome.