Declaring foreign bank accounts in Spain: the full map

If you come from Sweden, Denmark, Norway or Finland, your tax agency already sees most of your accounts through automatic reporting — you're used to transparency. Spain adds a layer you have to action yourself: once you become a Spanish tax resident, you must actively report accounts held abroad, through three forms that trip up newcomers. Here's the clear map, built for an internationally mobile reader.

First, the distinction that changes everything: report ≠ pay

The most reassuring — and most misunderstood — point: these declarations are purely informative. You pay no tax by filing a Modelo 720; you simply inform the administration that your assets exist. Tax happens elsewhere: in your annual Renta return, on the income those accounts produce (interest, capital gains). Confusing the two is the error that paralyses so many new residents: the 720 isn't a tax, it's a census.

The three tiers of the Spanish system

Remember the practical hierarchy: the Modelo 720 concerns the vast majority of expats, the ETE only touches large estates (€1 million threshold), and the D6 mainly targets investors holding securities directly abroad. All three are independent: you can owe one, two, or none. The official detail is on the Agencia Tributaria and Bank of Spain portals.

The real question: "do I have to declare my Revolut, N26 or Wise?"

It's THE question of the modern expat, and the answer fits in one sentence: what matters is the country of the institution that issued your IBAN, not the app.

• Revolut (Lithuanian IBAN, LT…)

  A foreign institution from Spain's viewpoint: the account falls under the Modelo 720 if the balance on 31 December — or the last-quarter average, whichever is higher — pushes the accounts category over €50,000.

• N26 (German IBAN, DE…)

  Same: a German institution, so a foreign account to declare above the threshold. Using it daily in Spain doesn't change its legal location.

• Wise (Belgian, European IBAN…)

  Same logic, by issuing institution. A dormant balance is irrelevant: it's the 31/12 balance or the quarterly average that triggers the obligation, not your usage.

• The threshold is per CATEGORY, not per account

  You add up ALL your foreign accounts. Three accounts at €20,000 each = €60,000 combined = obligation to declare, even if none exceeds €50,000 alone. The classic 'each account is under the threshold' mistake.

In short: a neobank account doesn't escape the rule just because it's an app. A specialised gestor settles edge cases, but the principle is stable — and automatic bank-data exchange (the CRS standard) means Hacienda already receives data from most of these institutions. "Quiet" omission no longer exists.

The accounts expats actually use (and declare)

Since we're on the subject of foreign accounts: here are the providers most internationally mobile expats keep or open to juggle euros and other currencies across borders. They're genuinely useful — just remember each one counts toward the Modelo 720 once the category total crosses €50,000.

The calendar and the mechanics of the Modelo 720

Penalties: why nobody jokes about the 720

Historically, the Modelo 720's penalty regime was fearsomely severe — until the Court of Justice of the EU struck it down in 2022 for disproportion. Fines have since reverted to the far more measured general regime, but the obligation to declare remains fully in force and forgetting it is still sanctionable. We detail the post-CJEU regime, the amounts and voluntary regularisation in our complete Modelo 720 guide — required reading before your first filing.