Sealed unopened letter on a dark desk at dusk, representing a foreign bank FATCA notice to a US resident
US · Journal

A FATCA Letter From Your Foreign Bank: What a US Resident Should Do

Your bank wants a W-9. If the account was never on an FBAR, the letter starts a clock — and the domestic streamlined track has a trap the guides miss.

Published 5 November 2026 · Reviewed by a licensed professional
A FATCA letter is the bank asking you to document your US status — and for a US resident with an unreported foreign account, it usually arrives while the streamlined domestic route is still open.

A FATCA letter is your bank asking you to document your tax status, not the IRS opening an enquiry. Answer it truthfully and by the date on the letter — a US person signs a Form W-9. The part that matters is what happens next: once you confirm your status, the account becomes reportable, and if it was never on an FBAR or a Form 8938, you want your correction under way before that report reaches the IRS.

Almost everything written about these letters is addressed to Americans living abroad. If you live in the United States and hold an account overseas — an inherited account in your home country, a pension from a stint abroad, a brokerage account you opened before you moved — your position is materially different, and the differences are the ones that decide the outcome.

What the letter is, and what it is not

Under the Foreign Account Tax Compliance Act, non-US financial institutions must identify accounts held by US persons and report them. The letter is the identification step. Your bank has found something in your file that suggests a US connection and is asking you to confirm or deny it, usually on a self-certification form or on a W-9 or W-8BEN.

It is not an audit. It is not a notice. It is not evidence that the IRS has you in mind. Banks send these in batches — on onboarding, on periodic re-documentation, and whenever a file shows what the rules call US indicia: a US place of birth, a US address or telephone number, a standing instruction to a US account, or a power of attorney held by someone with a US address. Most recipients are entirely compliant and the letter is a formality.

Equally, it is not nothing. Your reply is what moves the account from undocumented to documented and reportable, and the bank reports it whether you reply or not. Ignoring the letter does not keep the account quiet; it usually gets the account restricted or closed while the reporting happens anyway.

Answer it, and answer it truthfully

If you are a US citizen, a green-card holder, or a resident under the substantial presence test, you are a US person and the form is a W-9. Do not send a W-8BEN to buy time. That form certifies foreign status under penalty of perjury, and a false certification to a financial institution is a far worse problem than the one you are trying to postpone.

If the deadline is tight and you need advice first, write to the bank and ask for a short extension while you take professional advice. Banks grant these routinely. What they will not do is leave an undocumented account open indefinitely.

Two instincts to resist. Do not close the account, and do not move the money to another foreign bank. Neither erases a reporting history, and the second simply buys you a second FATCA letter.

The sequence the letter starts

This is the part the general guides leave out, and it is the reason the letter is useful rather than merely alarming. There is a sequence, it has slack in it, and you are at the front of it.

Where your bank sits in a Model 2 jurisdiction, or reports directly, it files the FATCA report with the IRS on Form 8966 — due, per the IRS instructions for the form, "on or before March 31 of the year following the end of the calendar year" the report covers. Where your bank sits in a Model 1 jurisdiction, the instructions are explicit that "Reporting Model 1 FFIs do not file Form 8966 directly to the IRS": the bank reports to its own tax authority, which then exchanges the data with the IRS. That adds a further leg, and a further lag.

Against that, the streamlined procedures close on a specific event. The IRS states that a taxpayer under a civil examination of their returns for any taxable year "will not be eligible to use the streamlined procedures," and that a taxpayer under investigation by IRS Criminal Investigation is also ineligible. The door is open until it is shut, and it shuts on the IRS's initiative, not yours.

So the letter arrives at the one moment when you still hold the initiative. That is worth something, and it does not last.

You are on the domestic track, and it is not the gentle one

There are two streamlined tracks and your residence picks which. The foreign track requires you to meet a non-residency test: for a US citizen or lawful permanent resident, that means that in at least one of the most recent three years for which the return due date has passed, you had no US abode and you were physically outside the United States for at least 330 full days. If you live in the United States, you fail that test, and you are on the Streamlined Domestic Offshore Procedures.

The two tracks ask for the same filings — amended returns for the most recent three years for which the due date has passed, and FBARs for the most recent six years — but they do not carry the same cost. The foreign track imposes no offshore penalty. The domestic track does. The IRS domestic page sets it out: "The Title 26 miscellaneous offshore penalty is equal to 5 percent of the highest aggregate balance/value of the taxpayer's foreign financial assets that are subject to the miscellaneous offshore penalty." The certification is Form 14654, not the Form 14653 the expat guides keep naming. We walk through the difference in SDOP or SFOP after moving back to the US.

The penalty base is narrower than people assume. An asset enters it only if it should have been reported on an FBAR and was not, or should have been reported on a Form 8938 and was not, or was properly reported but its income was not. And the base is built from year-end values, not peak balances — the highest of those year-end aggregates across the covered periods. How the SDOP penalty base is measured works through the arithmetic.

The eligibility trap: SDOP will not take a return you never filed

This is the single most consequential fact for a US resident, and it is absent from essentially every article on FATCA letters.

The domestic procedures accept amended returns only. The IRS page states, in terms, that "You may not file delinquent income tax returns" under these procedures, and eligibility requires that you "have previously filed a U.S. tax return (if required) for each of the most recent 3 years."

The practical effect is a hard fork:

A related point for the many people whose returns were filed but whose FBARs never were: not every case is a streamlined case. Filed your returns but never filed an FBAR covers when the simpler delinquent-FBAR route is the right one, and when it is not.

Two further gates. You need a valid taxpayer identification number — the IRS is clear that without an SSN or ITIN "your tax return will not be processed under the streamlined procedures." And you must certify that the conduct was non-willful, with facts behind it rather than an assertion. What non-willful actually means is the place to start, and why SDOP submissions get rejected shows what a thin certification costs.

What streamlined does not buy

Be clear-eyed about this, because some of what is written about FATCA letters oversells it badly.

Streamlined is not an amnesty and it is not immunity. The IRS states that returns submitted under the procedures "will not be subject to IRS audit automatically, but they may be selected for audit," and that such returns "may be subject to IRS examination, additional civil penalties, and even criminal liability." It confers no protection from criminal prosecution. Where there is a real prospect that the conduct was willful, the IRS directs taxpayers to the Criminal Investigation Voluntary Disclosure Practice instead — a different programme with different terms, compared in streamlined or voluntary disclosure. That assessment belongs with a professional before anything is filed, not after.

Nor should anyone promise you a timetable. The IRS publishes no processing time for a streamlined submission, and any firm that quotes you one is inventing it.

If you are a resident but not a citizen

Green-card holders and substantial-presence residents are the likeliest recipients of a foreign-bank letter, because the account in question is usually a perfectly ordinary account in the country they came from. The non-residency test works differently for them: an individual who is neither a US citizen nor a lawful permanent resident meets it by having failed the substantial presence test of section 7701(b)(3) in one of the relevant years — a single test, with no abode limb and no day count of its own.

Worth knowing, too, that the account you have held since childhood is as reportable as one opened yesterday.

What you actually have to file

Two separate obligations, routinely confused, and the letter is a good moment to check both.

You can easily owe one and not the other. Form 8938 versus the FBAR sets the two side by side.

A sensible order of operations

  1. Note the bank's deadline, and ask for an extension if you need one. Do not let it pass in silence.
  2. Establish whether you are in fact a US person. Usually obvious; occasionally not.
  3. Before you sign anything, work out whether the account was reported. Pull the relevant years' returns and FBARs and look.
  4. If it was reported, return the W-9 and carry on.
  5. If it was not, take advice on the route before you reply — and gather the records for the covered years now, because the base and the certification both depend on them.
  6. Return the W-9, truthfully, within the bank's window.

Our US team prepares streamlined submissions for US residents, including the Form 14654 penalty computation and the non-willfulness certification, and every filing is reviewed and signed by a licensed CPA or Enrolled Agent before it goes anywhere. If a letter has landed and you are not sure where you stand, book a consultation — our pricing for disclosure work is fixed and quoted up front. If your position is the mirror image of this one and you are reading from abroad, your bank asking whether you are a US person is the article for you.

Sources

This article is general guidance, not advice on your circumstances. Whether a particular failure was non-willful is a question of fact, and it should be assessed by a licensed professional before any submission is made.

Frequently asked questions

What happens if I ignore a FATCA letter from my bank?+
The reporting happens anyway. An account the bank cannot document is treated as undocumented and reported on that basis, so silence does not keep it private — it simply removes your say in how it is characterised. What you also risk is the account itself: non-response is the most common reason banks restrict or close accounts held by US persons. If you need time to take advice, ask the bank for an extension rather than letting the date pass.
Is a FATCA letter an IRS audit?+
No. The letter comes from your bank, not the IRS, and it is a customer-documentation exercise rather than an enquiry into you. Banks send them in batches, on onboarding and on periodic reviews, and most recipients are fully compliant. It matters only because of what follows it: your reply is what makes the account reportable, and the IRS treats the opening of a civil examination as the point at which the streamlined procedures close.
Should I close my foreign account after getting a FATCA letter?+
No, and moving the money to another foreign bank is worse. Closing an account does not erase the years in which it should have been reported, does not remove it from the streamlined penalty base, and does not stop the bank reporting what it already holds. A sudden closure or transfer immediately after a documentation request is also precisely the pattern that makes a non-willfulness certification harder to support later.
How long do I have to respond to a FATCA letter?+
There is no universal deadline — the date is set by the bank, and it varies by institution and by country, so read the letter rather than relying on a figure from a guide. Banks will usually grant a short extension on request if you explain that you are taking professional advice. Use that window to establish whether the account was reported on your returns and FBARs, because that is the question that determines everything that follows.
Can I still use the streamlined procedure after my bank has reported my account?+
Often, yes. Eligibility does not turn on whether the bank has reported; it turns on whether the IRS has initiated a civil examination of your returns for any year, or whether you are under investigation by IRS Criminal Investigation, either of which makes you ineligible. The data also reaches the IRS with a lag — a directly reporting institution files Form 8966 by 31 March of the following year, and a Model 1 institution reports to its own tax authority first, which then exchanges. That said, the window is finite and it closes on the IRS's initiative, so a letter is a reason to move rather than to wait.

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