.png)
US Taxes for Americans in Portugal: FBAR, FEIE, the Treaty and Catching Up (2026 Guide)
Updated: Oct 6
Who this guide is for: Americans in Portugal, and Portuguese founders selling to the US
Moving to Portugal does not end your relationship with the IRS. A US citizen or green-card holder files a US return on worldwide income every year, wherever they live, and reports foreign accounts on top of it. Most of the people who call us from Lisbon, Porto and Cascais are not trying to avoid that — they simply never heard it, or heard it years after they moved. This guide lays out the US rules that actually apply in Portugal, what the Autoridade Tributária e Aduaneira (AT) side of the picture means for the US return, and how to catch up if you are behind.
I am an Enrolled Agent, licensed by the US Treasury to represent taxpayers before the IRS from anywhere in the world. We work with four groups in Portugal: US citizens and green-card holders who moved to Portugal for the lifestyle — retirees in the Algarve, remote workers in Lisbon and Porto; Americans on Portugal's digital-nomad and passive-income residence visas who still have US wages, rentals or investments; Portuguese-Americans and dual citizens with family, property or a business on both sides; Portuguese founders and freelancers who want a US LLC, EIN and US bank account to bill American clients. This is general information, not individual advice.
The US-Portugal tax treaty and totalization: what they do and do not do
The US and Portugal have an income tax treaty in force; it coordinates how pensions, dividends and double-taxation tie-breaks are handled but does not exempt US citizens from filing a US return on worldwide income.
The US-Portugal totalization agreement is in force, so where you pay Social Security contributions depends on how and where you work — self-employed Americans in Portugal can usually avoid paying into both systems at once.
The single most common misunderstanding we correct: a treaty never removes the obligation to FILE. It changes how specific income types are taxed, and the saving-clause in every US treaty lets the IRS tax its own citizens as if most of the treaty did not exist.
FBAR, FATCA and the accounts you have in Portugal
FBAR applies to Portuguese accounts at Caixa Geral de Depósitos, Millennium bcp, Novo Banco and every other local bank once the combined high balance of all foreign accounts crosses the reporting threshold.
FATCA (Form 8938) is a second, separate report with higher thresholds for people living abroad; missing one and not the other is common and fixable. Both are informational — no tax is due on the form itself — but the penalties for skipping them are the largest in the expat rulebook.
FEIE vs. Foreign Tax Credit in Portugal
The Foreign Earned Income Exclusion covers wages and self-employment income earned while a bona fide resident of Portugal or physically present abroad long enough; it does not cover US-source income, pensions or Social Security.
Portugal taxes residents at meaningful rates, so the Foreign Tax Credit usually does more work here than the FEIE — and stacking both on the same income is not allowed, so the mix has to be modeled.
The choice is not permanent, but revoking the exclusion locks you out of it for several years, so the decision should be modeled against your actual mix of wages, self-employment and investment income before the first return is filed.
Businesses, pensions and investments: the forms that surprise people in Portugal
A Portuguese LDA company or a stake in a family business can trigger Form 5471; Portuguese mutual funds and many pension-wrapped investment products are often PFICs with their own reporting.
Private Portuguese pension arrangements and the treaty article covering pensions interact in ways that surprise retirees — the US treatment of a Portuguese pension depends on how it is classified, not on what it is called.
Every one of these forms carries an automatic, per-form penalty for non-filing that has nothing to do with whether tax was owed — which is why they matter more than the 1040 itself for many long-term residents.
What the Autoridade Tributária e Aduaneira (AT) taxes — and how it interacts with your US return
Portugal taxes residents on worldwide income, so an American who becomes Portuguese-resident should assume the AT sees the same income the IRS does — the two systems then reconcile through the treaty and the credit mechanism.
Portugal has changed its special regimes for new residents more than once, so anyone who moved counting on a preferential status should confirm what regime they are actually in and what it still covers.
We are a US firm: we handle the US side in-house and coordinate with your local accountant on the Portugal side, rather than pretending to be licensed in both.
Portugal-specific patterns we see
Three things come up in Portugal cases more than anywhere else:
The NHR-era retiree community is full of people who filed their Portuguese side correctly under a special regime and assumed that ended their US obligations — it did not, and the gap only surfaces when a bank asks for FATCA paperwork.
Golden-visa and fund-subscription investors often discover that the Portuguese fund they bought is a PFIC, turning a residency investment into a multi-year US reporting problem.
Portugal's remote-work visa wave means many Americans arrive mid-year with US wages, Portuguese payroll and stock compensation all in the same year — the residency split has to be built deliberately, not reconstructed in April.
Behind on US taxes? The streamlined path back
Americans in Portugal who have not filed for years generally qualify for the Streamlined Foreign Offshore Procedures — three years of returns, six years of FBARs, a non-willfulness statement and no failure-to-file penalty — as long as the IRS has not already written to them.
The program is designed for exactly this population, and the non-willfulness statement is the part that needs a professional's attention — it is a signed narrative to the IRS, not a checkbox.
Portuguese founders and freelancers: reaching US clients with a US LLC
Not everyone reading this is American. Many of our Portugal clients are Portuguese founders, freelancers and agencies who bill US customers and want dollar banking, Stripe and a US invoice. A non-US person can own a US LLC and get an EIN without a Social Security Number; the annual price is a Form 5472 information return and a pro-forma 1120, and the reward is US market access without a US tax return on the owner's worldwide income in most single-owner setups.
The trap is doing it halfway — forming the LLC and skipping the 5472, which carries its own automatic penalty.
Portugal cities we serve
We work with clients in Lisbon, Porto, Cascais, Faro, Braga, Funchal and Coimbra and everywhere else in Portugal, entirely by video call, secure portal and e-signature, on US hours and Portugal hours.
Frequently Asked Questions
Do I have to file US taxes if I live in Portugal?
Yes. US citizens and green-card holders file on worldwide income every year regardless of where they live; the treaty and the FEIE reduce the tax, not the filing duty.
Do my Portugal bank accounts need an FBAR?
FBAR applies to Portuguese accounts at Caixa Geral de Depósitos, Millennium bcp, Novo Banco and every other local bank once the combined high balance of all foreign accounts crosses the reporting threshold.
Is there a US-Portugal tax treaty?
The US and Portugal have an income tax treaty in force; it coordinates how pensions, dividends and double-taxation tie-breaks are handled but does not exempt US citizens from filing a US return on worldwide income.
Does Portugal have a Social Security totalization agreement with the US?
The US-Portugal totalization agreement is in force, so where you pay Social Security contributions depends on how and where you work — self-employed Americans in Portugal can usually avoid paying into both systems at once.
I have not filed in years while living in Portugal. What now?
Americans in Portugal who have not filed for years generally qualify for the Streamlined Foreign Offshore Procedures — three years of returns, six years of FBARs, a non-willfulness statement and no failure-to-file penalty — as long as the IRS has not already written to them.
Related Reading
Talk to an Enrolled Agent
This article is general information, not individual tax advice. Book a free 20-minute review or call, text or WhatsApp us to talk through your own situation.
Comments