Francisca Abrantes | Tax Consultant

Holding accounts abroad is no longer just for investors or travelers, many everyday fintech users now have international financial footprints. In Portugal, even zero-balance accounts must be reported in Annex J of your IRS return. Disclosure ensures transparency, separates reporting from taxation, and helps avoid fines.

The Age of Automatic Exchange

The Portuguese Tax Authority (Autoridade Tributária - AT) now operates with unprecedented visibility into international finances. We are firmly entrenched in the Common Reporting Standard (CRS) era. This global agreement ensures that financial institutions in over 100 countries automatically report account holder data to the tax authorities of their resident countries.

This means that when you open an account in a fintech app, that information is digitally "flagged" and shared with the AT. The focus is no longer on whether the AT will discover your foreign accounts, but on ensuring your tax return (Modelo 3) accurately reflects the information the government already possesses.

The Misconception of "No Profit, No Report"

The most common error we encounter is the assumption that reporting is only necessary if the account generated interest or holds a significant balance. In Portugal, the obligation to declare foreign accounts is formal, not just material. You are reporting the existence of the financial relationship, regardless of the amount of money held within it. It is a matter of transparency, not necessarily a matter of immediate taxation.

Even an account with:

• €0.00 balance throughout the year
• No transactions 
• No interest earned

...must still be declared if it was open at any point during the tax year.

Think of it as: Transparency first, taxation second.

The declaration is separate from income reporting. Most foreign accounts trigger only a disclosure obligation, not an immediate tax bill.

Navigating Annex J and the Fintech Landscape

When filling out your IRS return (Modelo 3), foreign financial activities are reported in Annex J.

Specifically, Table 11 is dedicated to listing every foreign bank account (IBAN) held during the previous tax year.

Defining "Foreign" in the Digital Age

A bank account is considered "foreign" if it is held with a financial institution located outside Portugal. In practice, this means that any IBAN that does not begin with "PT"** (Portugal's two-letter  country code).

It doesn't matter if you opened the account while sitting on your sofa in Lisbon. What matters is where the institution is registered. If your account is with a Lithuanian bank (IBAN starting with "LT"), it's a foreign account.

Common Examples & Jurisdictions

Here are the fintech platforms most frequently encountered in our practice, with the specific details you need for accurate reporting:

• Revolut (Lithuania - LT): Most Revolut accounts are now with Revolut Bank UAB (Lithuania). Declare the main account IBAN regardless of usage - daily spending, "Pockets," or savings all count.

• Degiro (Germany - DE): Investors often forget that behind their portfolio lies a "Cash Account" (FlatexDEGIRO) used to hold uninvested funds. This account has a German IBAN and is a mandatory disclosure.

• N26 / Bunq (Germany/Netherlands - DE/NL): Popular choices for digital nomads and tech-savvy savers. These are full-fledged bank accounts that trigger the reporting requirement.

• Wise (Belgium/various - BE): While often used for transfers, if you hold a "Balance" with a dedicated IBAN, the AT expects to see it listed.

• Interactive Brokers (Ireland/Luxembourg/Hungary): A staple for serious investors. Depending on which entity holds your account, the jurisdiction must be correctly identified.

The Difference Between Disclosure and Tax Liability

One of the primary reasons taxpayers hesitate to report foreign accounts is fear—fear of unexpected tax bills, double taxation, or triggering an audit simply by being transparent.

The reality is simpler: Disclosure is not taxation. Reporting an account's existence does not, by itself, create a tax liability.

Table 11 vs. Table 8: A Vital Distinction

Understanding which tables do what is the key to stress-free compliance:

• Table 11 (Identification): You provide the IBAN and the BIC/SWIFT. You do not report the balance. There is €0.00 tax associated with this table. It is purely for the AT's records.

• Table 8 (Income): This is where you report actual earnings (dividends, interest from a savings vault, or capital gains from selling stocks). If your foreign account is just a "transit" account with no interest, Table 8 remains empty, and you pay nothing.

The Consequences of Omission

The cost of forgetting to declare a foreign account typically exceeds any tax you might have owed. Here's what happens when the AT detects a mismatch through CRS data:

• Divergences: Your IRS settlement will be suspended. You will be asked to justify the existence of the account, often resulting in a delay of your tax refund.

• Fines (Coimas): Failure to declare a foreign account can lead to administrative penalties. While often negotiable if corrected voluntarily, these can range from €200 to significantly higher amounts depending on the omission's impact.

• Audits: Consistent failure to report foreign assets can trigger a more comprehensive "second look" at your global financial activities.

Summary Checklist for April

To ensure a "brilliant" and stress-free filing, taxpayers should:

• Download the "Statement of Assets" or "Tax Report" from every fintech/bank app they use.
• Identify the country code (the first two letters of the IBAN).
• Check for any accrued interest, even if it was just a few cents, as this moves the requirement from "Reporting" to "Taxation."

Compliance in the digital age is not about complexity - it is about consistency. By being proactive with Annex J, you align your digital footprint with your fiscal responsibilities, ensuring that your international financial flexibility remains an asset, not a liability.

Ensuring compliance with international accounts doesn’t have to be done alone. Our team is here to guide you, reach out via our contact form for tailored support.