FBAR & FATCA for Tax-Residency Planning: Reporting as a US Person

If you hold a green card or meet the Substantial Presence Test, you are a US person for tax purposes, and US persons must report their foreign financial accounts on the FBAR (FinCEN Form 114) and, if they cross higher thresholds, on Form 8938 under FATCA. Becoming a US tax resident is the trigger; physical citizenship is not required.

This is the part of residency planning most newcomers miss. The income-tax rules get the attention, but the moment you become a resident you also inherit two separate foreign-account disclosure regimes, each with its own form, threshold, and penalty structure. Crossing the residency line on the calendar is the same act that switches both reporting duties on.

What makes you a 'US person' for reporting

For FBAR and FATCA purposes, a US person is broader than a citizen. It captures anyone treated as a US tax resident, which is exactly the population this site is built around. If you cross the residency line through status or day-counting, the reporting obligations attach to you the same way they attach to a born citizen.

• US citizens, including dual citizens living abroad who may never have filed.
• Green-card holders (lawful permanent residents), resident from your first day of LPR presence, regardless of where you actually live.
• Substantial Presence Test residents, non-citizens who cross the weighted 183-day SPT in a year become US persons for that year.
• Certain entities, US corporations, partnerships, trusts, and estates, which matter if you hold accounts through a company.

FBAR vs. Form 8938: two different forms

People treat 'FBAR' and 'FATCA' as one thing. They are not. The FBAR is filed with FinCEN (Treasury) under the Bank Secrecy Act; Form 8938 is filed with your tax return under FATCA. They have different thresholds, different filing addresses, and overlapping but not identical coverage. Many US persons must file both, reporting the same accounts twice on different forms.

The FBAR threshold is a low aggregate dollar figure measured at the highest balance any account reached during the year, not on December 31. Form 8938 uses higher thresholds that differ depending on your filing status and whether you live inside or outside the US, and it reaches assets the FBAR does not, such as certain foreign stock, partnership interests, and contracts held outside an account. Because exact figures change, confirm the current numbers on the relevant FBAR and FATCA instructions before you file.

When residency starts is when reporting starts

The disclosure clock follows your residency starting date. If you become a US person partway through the year, your reporting obligation generally covers the resident portion of that year. A green-card holder is a resident from the first day of LPR presence; an SPT resident's residency starting date is typically the first day they are present in the year they meet the test.

• Green-card arrival: you are a US person from day one of LPR presence, foreign accounts become reportable for that year forward.
• SPT crossover: the year you meet the weighted 183-day test, you generally report for the resident part of the year.
• Dual-status years: the resident portion carries the reporting duty; how the nonresident portion is treated depends on the form and your facts.
• Exempt-individual years: days that don't count toward SPT (students, certain visa holders) can keep you a nonresident, and out of reporting, for longer than the raw day count suggests.

Expatriation: the reporting follows you out

Reporting obligations do not simply vanish when you leave. A green-card holder remains a US person, with full FBAR and Form 8938 duties, until they formally abandon the green card, not merely move away. And long-term residents who give up the card, like citizens who renounce, run into the expatriation regime, which has its own tax and certification consequences.

A green-card holder is treated as a long-term resident if they held LPR status in at least 8 of the last 15 tax years. Expatriating as a long-term resident can trigger the exit tax and Form 8854 certification, and that certification asks you to confirm you've complied with US tax obligations, including the years of foreign-account reporting you may or may not have filed. A clean reporting history is what makes a clean exit possible.

Abandoning a green card to escape US tax without first cleaning up unfiled FBARs and returns can backfire. Form 8854 effectively certifies prior compliance, and the years counted toward 'long-term resident' status are the same years you should have been reporting foreign accounts. Sort the history before you expatriate, not after.

Common reporting traps for new residents

• Assuming the FBAR only covers bank accounts. It also reaches foreign brokerage, certain pension and retirement accounts, and accounts you merely have signature authority over.
• Forgetting accounts back home. The account you left in your origin country is exactly the foreign account the FBAR is designed to capture once you become a US person.
• Reporting on one form but not the other. FBAR and Form 8938 are separate; filing one does not satisfy the other.
• Measuring on December 31. The FBAR threshold looks at the highest balance during the year, so a mid-year peak counts even if the account is empty at year-end.
• Ignoring the obligation after leaving the US. An un-surrendered green card keeps the duty alive.

Penalties for non-compliance are real, and the IRS distinguishes between non-willful and willful failures. There are also disclosure programs for people who genuinely did not know, newly minted residents are a classic example. The practical defense is the same one this whole site is about: knowing precisely when you became a US person, and acting on it deliberately.

Track the day you become a US person

FBAR and FATCA obligations switch on at your residency starting date, so the single most useful thing you can do is know that date cold. Tax Days logs your US presence trip by trip and runs the rolling SPT formula in real time, so you can see the exact moment you cross into US-person status and report foreign accounts on time. Pair it with our SPT calculator and 183-day calculator to plan around the line rather than stumble across it.