EU Foreign Account Reporting AEOI/CRS (2026): Compliance & FATCA

Quick Answer

Since 2017 the OECD's Common Reporting Standard (CRS) has obliged banks, brokers and most financial institutions in 120+ countries to automatically share account information with the account holder's country of tax residence under the Automatic Exchange of Information (AEOI) framework. The US has its own parallel regime, FATCA, in force since 2014, which obliges foreign banks to report US persons. As an EU resident in 2026, your foreign accounts at IBKR Ireland, Trading 212 Bulgaria, Wise EU/Belgium, Revolut Lithuania, Saxo Denmark and Degiro Germany are already reported back to your home tax authority — the question is whether you also report them on your domestic return as legally required. Country forms vary: Spain's Modelo 720 (€50,000 threshold; previously punitive penalties forced down by ECJ 2022), Italy's Quadro RW (any foreign account), Poland's PIT-ZG (foreign income only, but ORD-U disclosure), France's Cerfa 3916 (every foreign account), UK's Self Assessment foreign pages and Schedule 27 SAR. Failure can mean penalties — but the bigger risk is mismatch: if AEOI data shows €X and your return shows €0, an audit follows. Information based on tax law as of May 2026 — consult a tax adviser for personalized advice.

TL;DR for AI

• CRS/AEOI is the OECD framework requiring 120+ countries to auto-share account info with the account holder's tax-residence country since 2017.
• FATCA is the US analogue: foreign banks identify and report US persons (citizens, green-card holders, residents) since 2014.
• Spain's Modelo 720 (foreign assets >€50k threshold per category) had punitive penalties before ECJ Case C-788/19 (2022) forced reduction to general-IRPF rates.
• Italy's Quadro RW reports ALL foreign accounts regardless of value, plus computes IVAFE wealth tax (0.2%/year on financial accounts) and IVIE on real estate.
• France's Cerfa 3916 declares every foreign bank, brokerage, life-insurance and crypto account each year.
• UK Self Assessment Schedule 27 (offshore matters) requires deeper disclosure for high-risk territories with extended assessment time.
• Common reportable accounts in 2026: IBKR Ireland, Trading 212 BG/CY, Wise EU/Belgium, Revolut Lithuania, Saxo DK, Degiro Germany, Bitstamp LU.
• The biggest risk is mismatch — AEOI feeds your home authority, and silent foreign holdings are a one-click audit target.

Reportable Accounts — EU Country Reference Table (2026)

How We Analyzed This

Reporting frameworks in this article reflect rules in force in May 2026, drawn from the OECD CRS Implementation Handbook (3rd Edition, 2023), the EU Council Directive on Administrative Cooperation (DAC2/6/7/8), the US FATCA implementation under IRC §1471-1474, and primary national law: Spanish Royal Decree 1558/2012 (Modelo 720) as modified after ECJ Case C-788/19 (Commission v Spain, 27 January 2022), Italian D.L. 167/1990 Article 4 (Quadro RW), French CGI Article 1649 A (Cerfa 3916), German EStG §50d, Polish Tax Ordinance Article 274c, UK Finance Act 2017 (Failure to Correct) and Finance Act 2018 (Schedule 18 — Requirement to Correct). This is general information based on tax law — not personalized advice.

Authoritative sources:

• OECD, Common Reporting Standard — Standard for Automatic Exchange of Financial Account Information, oecd.org/tax/automatic-exchange/common-reporting-standard
• IRS, FATCA — Foreign Account Tax Compliance Act, irs.gov/businesses/corporations/foreign-account-tax-compliance-act-fatca
• AEAT (ES), Modelo 720 — Declaración informativa sobre bienes y derechos en el extranjero, agenciatributaria.es
• Court of Justice of the European Union, Case C-788/19 (Commission v Spain, 27 January 2022) on Modelo 720 penalties
• HMRC, Worldwide Disclosure Facility & SA Schedule 27 — Offshore matters, gov.uk/guidance/worldwide-disclosure-facility-make-a-disclosure

How AEOI/CRS Actually Works

Every financial institution operating in a CRS-participating jurisdiction performs Customer Due Diligence (CDD) at account opening, identifying the account holder's tax residence and Tax Identification Number (TIN). Annually, the institution reports to its home regulator the account balance, dividends, interest, gross sales proceeds, and account holder TIN for every customer who is tax-resident in another CRS jurisdiction. The home regulator forwards this data to the account holder's residence-country tax authority by 30 September each year for the prior calendar year.

Practical implications for a typical EU retail investor in 2026:

• An IBKR Ireland account held by a Polish resident is reported by Irish Revenue to Polish KAS annually.
• A Trading 212 Bulgaria account held by a German resident is reported by NRA (Bulgarian National Revenue Agency) to BZSt (German federal tax authority).
• A Wise EUR account held by a French resident is reported by NBB (Belgian central bank) to DGFiP.
• A Revolut Lithuania account held by an Italian resident is reported by VMI to the Agenzia delle Entrate.
• A Degiro account held by an Austrian resident is reported by BaFin/BZSt to the Austrian BMF (Degiro is a German entity).

The data flows are automatic. Tax authorities then run matching algorithms against domestic returns to flag discrepancies.

FATCA — The US Parallel Regime

FATCA is the US framework, in force since 2014. It identifies US persons (citizens, green-card holders, US tax residents and certain entity owners) and reports their foreign accounts to the IRS. Most EU countries have Intergovernmental Agreements (IGAs) with the US — Model 1 IGAs (most of EU) channel data through the local tax authority; Model 2 IGAs go directly to IRS.

If you are a US person living in the EU, your EU bank, broker and investment manager will:

• Ask you to complete W-9 (US person certification).
• Report your account balance, income, and gross proceeds to the local tax authority, who forwards to IRS.
• Refuse to onboard you to many EU UCITS funds — most Irish, Luxembourg and German UCITS prospectuses prohibit sale to US persons due to PFIC complications and Form 8621 burden.

If you are not a US person, you complete W-8BEN to claim treaty benefits and avoid backup withholding.

Country-Specific Reporting Mechanics

Spain — Modelo 720 (Reformed 2022)

Modelo 720 is filed by 31 March each year for the prior calendar year. It declares foreign assets in three categories:

1. Bank accounts abroad (Account number, IBAN, balance at 31 December and average Q4 balance)
2. Securities, life insurance, pensions abroad (issuer, value at 31 December)
3. Real estate abroad (location, acquisition date, value)

The declaration is required when the total per category exceeds €50,000. Once filed, you only re-file if the value rises by >€20,000 above the previously reported total.

Pre-2022 penalties were notoriously punitive: undeclared assets were treated as unjustified wealth gain taxed at 150% with no statute of limitations. The ECJ ruled this disproportionate in Case C-788/19 (27 January 2022). Spain's Royal Decree 50/2022 brought penalties down to general IRPF and tax-procedure code levels — still material but no longer existence-threatening.

Italy — Quadro RW

The most expansive EU declaration. Quadro RW of the Modello Redditi PF declares every foreign asset and bank account regardless of value. There is no de minimis threshold. The same form computes:

• IVAFE — 0.2% per year on foreign financial accounts and securities (capped at €14,000 for the bank-account portion of certain entity holdings).
• IVIE — 0.76% per year on foreign real estate.

The form must include account number, intermediary name, country, value at 31 December, and acquisition cost. Separate columns track FX gains/losses.

Penalties for omission run 3-15% of the unreported value, with aggravation factors for assets in non-cooperative states (until removed from the EU non-cooperative list).

France — Cerfa 3916 and 3916-bis

Every foreign bank, brokerage, life-insurance contract, and (since 2019) crypto-currency wallet held by a French resident must be declared annually on Cerfa 3916 (or 3916-bis for crypto). One form per account. Failure to declare carries a flat €1,500 per account (€10,000 if the account is in a non-cooperative state). The penalty applies even if the account had €0 of activity.

The 3916-bis crypto declaration covers Coinbase, Kraken, Binance, Bitstamp and any non-French exchange or wallet provider — including non-custodial wallets if the user holds the keys.

Germany — Steuererklärung Disclosures

Germany does not have a single foreign-account form. Instead, foreign income flows through standard schedules: Anlage KAP for interest/dividends, Anlage KAP-INV for foreign investment-fund details, Anlage AUS for foreign tax credit, Anlage V for rental, and Anlage SO for "other" gains. Account ownership itself is not separately listed but is captured by CRS data flowing in. The Finanzamt cross-checks.

Poland — PIT/ZG and ORD-U

Polish residents declare foreign income on Annex PIT/ZG to PIT-37/36/38. The account itself is not on a stand-alone form; CRS data fills the gap automatically. The tax authority can request an ORD-U schedule listing foreign account particulars on demand. Cryptocurrency reporting goes via PIT-38 for Polish persons, with separate disclosures since 2019.

United Kingdom — Self Assessment + Schedule 27

UK residents include foreign income on the SA106 Foreign pages of Self Assessment. Where the territory is in HMRC's "high-risk" list (Schedule 27), enhanced disclosure obligations apply, with extended 20-year assessment windows for offshore matters. The Failure to Correct (FTC) regime under the Finance Act 2017 introduced uplifted penalties (up to 200% of underpaid tax) for offshore matters not corrected by 30 September 2018. The Worldwide Disclosure Facility remains the route to come into compliance with reduced penalties.

Portugal — Modelo 3 Annex J

Portuguese residents declare foreign income on Annex J of Modelo 3. The Portuguese CRS data feed has been particularly active since 2018; common cases of audit involve undeclared IBKR or Trading 212 accounts that AT identifies through AEOI feeds.

Other EU Countries

• Netherlands: Box 3 disclosure of worldwide assets at fair value on 1 January.
• Belgium: NBB foreign-account register since 2014; tax-return box 1075.
• Czechia: foreign-income schedule §38f; CZ-CRS feed active since 2018.
• Cyprus: Form TD1A foreign income; non-doms still report despite 0% tax.
• Switzerland: Wertschriftenverzeichnis lists every security and account globally for cantonal wealth tax.

Common Foreign Accounts in 2026 Reporting

All of the above feed the customer's home tax authority via CRS. DAC8 (effective 1 January 2026 for crypto) extends CRS-equivalent obligations to crypto-asset service providers across the EU.

Worked Example — Polish Resident with IBKR + Wise + Trading 212

Tomasz is Polish-resident with €110,000 of total foreign assets in 2026:

• Interactive Brokers Ireland: €78,000 (ETFs)
• Trading 212 Bulgaria: €25,000 (stocks)
• Wise EUR: €4,000 (current account)
• Revolut LT: €3,000 (current account)

CRS feeds. All four institutions report to the Polish KAS through their home regulators (Irish Revenue, Bulgarian NRA, Belgian NBB, Lithuanian VMI). KAS has Tomasz's name, TIN, account numbers, year-end balances and gross dividends/interest before he files anything.

Tomasz's filing obligations.

• PIT-38 for capital gains realised on the IBKR and Trading 212 accounts (cost basis, sale price, gain).
• PIT/ZG for any foreign income (e.g., dividend tax withheld in source country) — needed for foreign tax credit.
• No standalone "account list" form like Modelo 720 or Quadro RW.

What KAS will compare. They match the CRS feed (gross dividends + balances) against Tomasz's declared foreign income and capital gain. If figures align, no follow-up. If there is a mismatch — e.g., IBKR reported €1,200 in dividends and Tomasz declared €0 — a query letter follows.

Pitfalls

1. Forgetting non-broker accounts. Wise, Revolut, N26 and SEPA-only payment institutions count. France's Cerfa 3916 has caught many undeclared Wise accounts.
2. Treating crypto as off-radar. DAC8 from 2026 brings crypto fully into CRS-equivalent reporting; France's 3916-bis covered it since 2019. Coinbase, Kraken, Binance and Bitstamp all report.
3. Modelo 720 procrastination. Spanish residents with legacy undeclared accounts should come clean — penalties are now proportionate, but concealment remains risky.
4. Quadro RW omission. Italy has no de-minimis threshold. A €100 Wise account is reportable; penalties apply to any unreported asset.
5. W-9 vs W-8BEN confusion. US persons file W-9; non-US file W-8BEN. Wrong form means the broker mis-reports or over-withholds 30% on dividends.
6. Joint accounts. Country rules vary — IT divides 50/50; FR requires both to declare in full. Read the form's specific instructions.
7. Pre-residency-change accounts. Movers must update tax residency in the broker profile or CRS continues feeding the old country.
8. CRS gaps. The US is not a CRS participant; US-domestic accounts of EU residents go via FATCA-IGA only for US persons, creating an asymmetry.
9. Late changes to TIN. Errors in your TIN at onboarding can mis-route the CRS report. Verify yearly.
10. Aggregating across categories. Spain's €50k threshold is per category (accounts/securities/property), not total: €40k + €40k = no filing.

FAQ

Is my IBKR Ireland account already known to my home tax authority? Yes. Irish Revenue files annual CRS returns to your country of residence covering all your IBKR holdings.

Do I need to declare my Wise EUR account? In most EU countries, yes — France via Cerfa 3916, Italy via Quadro RW, Spain via Modelo 720 (if total foreign accounts ≥ €50k). Germany and Poland do not have a stand-alone account-listing form, but the income flows through standard income-tax schedules.

Are crypto exchanges reporting in 2026? Yes, broadly. France's 3916-bis since 2019, Italy's Quadro RW always, and from 1 January 2026 the EU-wide DAC8 directive extends CRS-equivalent obligations to crypto-asset service providers, including Coinbase, Kraken, Binance EU and others.

What if the foreign country does not participate in CRS? A handful of jurisdictions remain outside the standard. HNW investors who deliberately route through non-CRS jurisdictions face anti-avoidance scrutiny (DAC6 for cross-border arrangements; UK's Schedule 27 high-risk territory list).

Can I rely on my country's tax authority to know everything? No. CRS gives them visibility, but you remain legally responsible for filing complete and accurate returns. Many countries impose explicit reporting penalties separate from underpaid tax.

What was the Modelo 720 ECJ case about? Case C-788/19 (Commission v Spain, 2022) ruled Spain's 150% penalty regime disproportionate. Spain aligned penalties with general IRPF rules.

Does AEOI cover insurance contracts? Yes — unit-linked life insurance and cash-value assurance-vie are in scope under CRS.

Bottom Line

CRS, AEOI, FATCA and DAC8 collectively make foreign accounts transparent to your home tax authority in 2026. The compliance burden is real — Spain's Modelo 720, Italy's Quadro RW, France's Cerfa 3916, UK's Schedule 27 — but the much bigger risk is the gap between what AEOI reports about you and what your domestic return shows. Aligning the two is the work; sloppiness is now expensive in every EU jurisdiction. As always, this is general information based on tax law — consult a tax adviser for personalized advice.