Is a UK current account really reportable on an FBAR even if the balance is usually tiny?

Yes. The FBAR reports the account itself, not the income it earns or the balance you normally carry, so a near-empty current account at a UK bank is reportable if you are a US person. There is no exception for small or everyday accounts. What matters is the highest balance it reached during the year and whether your accounts added together crossed $10,000.

What balance do I report for my current account - the one on 31 December?

No. You report the greatest value the account held at any single moment during the calendar year, not the year-end figure and not an average. For a salary account that usually means the peak set the day your pay lands, before the mortgage and bills leave. You convert that peak to US dollars using the Treasury year-end exchange rate.

Does my offset mortgage savings account need its own entry on the FBAR?

Almost always, yes. The offset or linked savings pot is a separate financial account held at your lender, with its own balance, even though it is bundled with the mortgage. You report its own highest value for the year. Because offset pots are often large, that single account frequently settles the $10,000 aggregate question by itself.

If I report my UK current account, do I also have to report the mortgage?

No. A mortgage is a liability - money you owe - and the FBAR only reports financial accounts where you hold money or assets. You do not report the loan balance or the property. You do report the current account the payment leaves from and the offset savings pot, if you have one, because those are accounts.

I share my current account with my British partner - do I report half or all of it?

All of it. The FBAR does not prorate joint accounts, so each owner is treated as having a financial interest in the whole balance. You report the account's full highest value, not fifty per cent. Your non-US partner takes on no US filing duty and does not need a US tax number just because the account appears on your form.

I have never filed an FBAR for my UK account - how do I catch up now?

If there is also unreported income or unfiled returns, the Streamlined Foreign Offshore Procedures cover three years of returns, six years of FBARs and a non-willful certification. If your returns and income were always correct and only the forms are missing, you file the late FBARs through the BSA E-Filing System with a reason, before the IRS contacts you. Coming forward first is what protects you.

Missed FBAR: UK Current Account Used for Your Mortgage

A missed FBAR on the one UK account you use for everything - the account your salary lands in, the direct debits leave from, and the mortgage payment disappears each month - is the single most common reporting gap we see in US citizens living in Britain. It feels too ordinary to count. It is a high-street current account in pounds, opened long before anyone mentioned American tax, used for groceries, gym memberships and the mortgage. Surely that is not what the US Treasury means by a foreign financial account. It is exactly what they mean. An everyday UK current account held by a US person is almost always reportable on FinCEN Form 114, and the fact that it is mundane is precisely why it gets left off.

This article is about that account specifically, rather than the exotic holdings people expect an FBAR to catch. We will look at why the ordinary current account crosses the line, how a single salary payment can briefly push its balance far higher than you would guess, how the aggregate ten-thousand-dollar test pulls it in alongside everything else, and why the offset savings pot linked to your mortgage is a separate account in its own right. We will also be clear about one thing that reassures people: the mortgage itself is a debt, and a debt is not something you report on an FBAR. The account it is paid from is.

Why is an everyday UK current account almost always FBAR-reportable?

The FBAR rule does not care what an account is for. It reaches any financial account held at an institution located outside the United States in which a US person has a financial interest or over which they have signature authority. A current account at a UK bank or building society is a financial account at a non-US institution. Your US citizenship or residence makes you a US person. That is the whole test. There is no exception for small accounts, no exception for accounts used only for day-to-day spending, and no exception for an account you have held since university and never once thought of as an investment.

People reach for exceptions that do not exist. The account pays almost no interest, so it feels as though it should not count - but the FBAR is a report of the account, not of the income it produces, and a zero-interest current account is as reportable as any high-yield savings bond. The account is in pounds and never touches the United States - irrelevant, because the location of the institution is what matters, not the currency or where you spend the money. The balance is usually low - and we will come to why that is the most dangerous assumption of all, because what matters is the highest balance the account reached, not the balance you tend to carry around in it.

Does a salary landing really affect my highest balance?

Yes, and this is the mechanism that catches careful people out. The figure you report for each account is not your average balance and not the balance on 31 December. It is the greatest value the account held at any single moment during the calendar year. For a current account that your salary is paid into, that peak is set the instant your pay arrives, before the mortgage direct debit, the bills and the standing orders pull it back down. An account that hovers around a few hundred pounds for most of the month can show a maximum value several times higher on the one day each month that payday lands.

That matters because the peak is what goes on the form and what feeds the threshold test. Say your salary nets £3,200 a month and lands on the 28th. For a day or two the account holds that plus whatever was already there - perhaps £4,000 in total - before the mortgage payment and the rest leave at the start of the month. Your lived experience of the account is of a near-empty buffer. Its reportable maximum is £4,000. Across twelve paydays the account quietly spends part of every month well above the level you would have quoted if someone asked you, off the cuff, what it holds.

How does the aggregate $10,000 test actually work?

The ten-thousand-dollar threshold is the part that turns a modest current account into a filing obligation. An FBAR is required when the aggregate value of all your foreign financial accounts exceeded $10,000 at any time during the year. Aggregate is the operative word. You do not test each account on its own. You take the highest balance each account reached during the year, convert each to US dollars, add them together, and compare the total to the threshold. A current account that never individually looks threatening is pulled over the line by everything sitting beside it.

It is a total, not a per-account figure. A current account peaking at the equivalent of $6,000 and a linked savings pot peaking at $5,000 produce an aggregate of $11,000, and both must be reported, even though neither reached $10,000 on its own.
It uses each account's own highest balance, measured independently. The accounts do not have to hold their peaks on the same day; you take each one's maximum for the year and sum those maxima.
It is tested at any time during the year, not at year end. A balance that existed for a single afternoon counts just as much as one held for months.
It is measured in US dollars. Sterling balances are converted using the Treasury Bureau of the Fiscal Service rate for the last day of the calendar year, so a current account comfortably under £10,000 can still carry a dollar value that helps push the aggregate across.
Once the aggregate is crossed, every reportable account goes on the FBAR - not only the ones that caused the total to tip over. Crossing the threshold with two accounts means reporting both of them, and any others you hold.

Is my offset-mortgage savings pot a separate reportable account?

Almost always, yes. A UK offset mortgage links a savings account to your home loan so that the cash in the savings pot reduces the interest charged on the mortgage. The attraction is that your money works against your borrowing without being locked away. For FBAR purposes, the point that matters is that the offset savings pot is a distinct financial account held at the lender, with its own balance and its own maximum value, and it is reportable on its own terms. The fact that it is bundled with a mortgage product does not merge it into the loan or make it disappear.

This catches people because the offset pot often holds a large balance - that is the entire point of offsetting, since the more you park there, the less mortgage interest you pay. A household offsetting a substantial loan might keep tens of thousands of pounds in that linked account. On its own, that single pot will usually settle the aggregate question before you even look at the current account. If your salary account and your offset savings sit with the same bank, it is tempting to treat them as one relationship, but the FBAR treats them as two accounts and expects the highest balance of each, reported separately.

Is the mortgage itself reported on my FBAR?

No. This is the one piece of genuinely good news in the exercise, and it relieves a worry we hear constantly. The FBAR reports financial accounts - places where you hold money or assets. A mortgage is a liability, money you owe to the lender, and the FBAR has no box for what you owe. You do not report the outstanding mortgage balance, you do not report the property, and the size of the loan has no bearing on whether or what you file. What you do report is any account connected to servicing it: the current account the monthly payment leaves from, and the offset or linked savings pot if you have one. The debt is invisible to the form; the accounts around it are not.

What about a joint current account held with my UK spouse?

If your everyday account is held jointly with a British spouse who is not a US person, you still report it, and you report the entire balance rather than your half. The FBAR has no concept of proration between account holders. Where two people jointly own an account, each owner is treated as having a financial interest in the whole of it, so your maximum value is the full peak the account reached, not fifty per cent of it. The money landing from your spouse's salary makes no difference, and the account being as much theirs as yours makes no difference to your own obligation to report it in full.

Your non-US spouse, for their part, takes on nothing by appearing on your form. They do not acquire a US filing duty, they do not need a US taxpayer number, and they do not sign your FBAR. The form asks for some identifying information about a joint owner, but it does not pull them into the American system. The only practical consequence worth flagging is that a joint current account used for the household and the mortgage is reported in full by you - which is often the single account that tips a couple's aggregate over the threshold without either of them realising it had.

A worked example: a salary landing and an offset pot cross $10,000

The following figures are illustrative. Daniel is a US citizen who has lived in Leeds since 2016 and has a single UK current account plus an offset mortgage on his flat. He has always assumed that because the current account runs close to empty, there was nothing to report. He never filed an FBAR for any year he has been in the UK.

His current account is where his salary of around £3,000 net lands each month. For most of the month it holds a few hundred pounds, but on payday it peaks at roughly £3,400 once his pay meets the small buffer already sitting there. Converted to US dollars at the year-end Treasury rate, that peak is in the region of $4,300. On its own it is under the threshold, which is exactly why Daniel waved it away and never gave it another thought.

But Daniel also has the offset savings pot linked to his mortgage, into which he has steadily moved spare cash to cut his interest. During the year it peaked at £8,000, around $10,200. Add the current account's peak and the offset pot's peak together and the aggregate is comfortably past $10,000. Both accounts are reportable, and Daniel has a missed FBAR for every year the pattern held. The account he thought was far too trivial to count is reportable precisely because the account sitting beside it carried the total over the line.

A practical account sweep before you file

Before preparing any catch-up filing, we run a complete sweep of every account the US person could conceivably have an interest in or authority over, because a filing that reports three accounts when five were reportable is a defective filing and harder to stand behind than a late but complete one. Use the following checklist to build your own inventory before you start:

Your main UK current account - the one your salary lands in and the mortgage leaves from - captured at its highest balance during the year, including the payday spikes.
Any offset or linked savings pot attached to your mortgage, treated as a separate account with its own maximum value.
Other current accounts, including a seldom-used second account or a packaged account kept mainly for travel insurance or breakdown cover.
Instant-access and fixed-term savings accounts, notice accounts and building society accounts, even ones opened for a single deposit and then forgotten.
Cash ISAs and stocks-and-shares ISAs - the UK tax wrapper does not remove the underlying account from US reporting.
Joint accounts held with a spouse or anyone else, reported in full regardless of who funds them.
Any account you can operate but do not own, such as a parent's account you help manage, which is reportable under the signature authority rules.
Closed accounts - an account shut partway through a year is still reportable for that year, measured at its highest balance while it was open.

Missed FBAR catch-up routes: Streamlined or late filing

Once you know the current account should have been on an FBAR, the question is how to put several missing years right. There are two realistic routes, and which one fits depends on whether you also have unreported income or unfiled US returns behind the missed forms. For many expats the current account's trivial interest was either reported or too small to change the tax owed, but the returns themselves may never have been filed at all - and that difference drives the choice of route.

Where there is unreported income or unfiled returns behind the missed FBARs, the Streamlined Foreign Offshore Procedures are usually the right home for a US person living in the UK. Broadly, the procedure asks for amended or delinquent US tax returns for the most recent three years for which the due date has passed, FBARs for the most recent six years, and a signed certification that the failures were non-willful - that you simply did not know, rather than deliberately hiding the account. Done properly, eligible taxpayers are not charged the usual failure-to-file, accuracy or FBAR penalties.

Where your returns were always filed and the income was properly reported, and the only thing missing is the forms themselves, the position is narrower than it once was. The IRS previously ran a standalone delinquent-FBAR route with a published no-penalty undertaking, but that page was withdrawn in 2026 and should not be relied on as a live program. The current guidance is to file the late FBARs through the BSA E-Filing System as soon as possible, giving a reason for filing late, provided you have not already been contacted about them. Acting before any IRS contact is the single most valuable thing you can do, because both routes depend on you coming forward first.

Putting your missed FBAR right

A missed FBAR on an everyday UK current account is rarely a sign of anything sinister - it is almost always someone who genuinely did not know that the account their salary lands in and their mortgage leaves from was a reportable foreign account. That makes it very fixable. The work is methodical rather than dramatic: inventory every account, capture each one's true highest balance including the payday peaks, convert at the correct year-end rate, confirm that the mortgage debt stays off the form while the accounts around it go on, and choose the right catch-up route before the IRS reaches you. Our role is to run that process end to end as a straightforward compliance exercise, so the ordinary account that was quietly left off for years is brought back into line cleanly and does not have to be worried about again.