Modelo 720 Spain: everything you need to file on time and avoid penalties

What Modelo 720 is — and what it is not

Modelo 720 is an informational declaration — it tells the Spanish Tax Agency (AEAT) what foreign assets you hold. It is not, in itself, a payment of tax. Filing Modelo 720 does not create a tax liability; it declares assets that may be subject to other taxes (IRPF on income they generate, Impuesto sobre el Patrimonio on their value, IRNR if applicable).

The obligation was introduced in 2012–2013 as part of a broader package of anti-avoidance measures, on the assumption that residents with undeclared foreign assets were likely hiding income and capital from the AEAT. The original penalty regime was extreme: €5,000 per data item for incorrect, incomplete, or late declarations, with minimums of €10,000 per category — and the possibility of treating the entire undeclared foreign balance as untaxed income subject to full IRPF at marginal rates, without any statute of limitations applying.

The European Court of Justice struck down the disproportionate penalty regime in January 2022 (case C-788/19, Commission v Spain). Spain enacted Ley 5/2022 to bring its penalties in line with the general regime for informational returns. The much-litigated Art. 39.2 LIRPF — which allowed undeclared foreign assets to be treated as unjustified capital gains without limitation period — was also modified; AEAT can no longer apply the unlimited look-back, but can still apply the four-year general inspection period.

The three categories and how to apply the €50,000 threshold

Modelo 720 covers three entirely separate asset categories, each with its own €50,000 threshold:

Category A — Foreign bank accounts. All accounts held at banks or credit institutions outside Spain: current accounts, savings accounts, fixed-term deposits, and any other deposit product. The declaration reports: the name and country of the foreign bank, the account IBAN or equivalent identifier, the legal titularity (sole owner, joint owner, authorised signatory, beneficial owner, trustee), the 31 December balance, and the average Q4 balance. You must include accounts for which you are only an authorised signatory (apoderado), even if you are not the beneficial owner.

Category B — Securities, insurance, and income rights held abroad. This covers: shares, bonds, and other securities held at foreign brokers or custodians; life insurance policies with investment element (unit-linked, investment bonds) issued by non-Spanish insurers; and income rights such as pension scheme entitlements with a realisable value. For each position: the ISIN (for listed securities), the issuer, the 31 December market value or surrender value, and the titularity. ISAs, 401(k)s, SIPPs, and investment bonds issued by UK or other non-Spanish insurers typically fall in this category.

Category C — Real estate and rights in real estate outside Spain. Foreign properties owned outright, co-owned, or over which you hold usage rights (usufruct, surface rights, timeshare interests). Valued at acquisition cost (not current market value). UK residential property, French farmhouses, holiday homes in other countries — all fall here if owned by a Spanish tax resident.

Each category has its own independent €50,000 threshold. You only declare categories that exceed the threshold. If your foreign bank accounts total €30,000 and your UK investment portfolio is €80,000, you declare Category B only. If your accounts are €60,000 and you have no foreign securities or real estate, you declare Category A only.

The 31 March deadline: why it is absolute

The Modelo 720 filing window is 1 January to 31 March each year. There are no extensions. There are no grace periods. If you miss 31 March, you can still file a late declaration voluntarily — but the late-filing surcharges apply from day one after the deadline.

The AEAT’s electronic platform for Modelo 720 accepts submissions around the clock through 31 March. Filing on the last working day before 31 March (if 31 March falls on a weekend, the deadline is actually 31 March itself, not the preceding Friday — unlike some Spanish tax filing calendars that defer to the next business day) risks technical issues, and BMC files all Modelo 720 returns well before the deadline as standard practice.

When a re-declaration is and is not required

A common area of confusion is whether you need to file Modelo 720 every year. The rule is:

Year 1 (first declaration): File if any category exceeds €50,000. You declare the full content of all triggering categories.

Year 2 onwards: File only if:

• Any previously-declared category has increased by more than €20,000 since the most recently filed declaration for that category
• You have acquired a new asset belonging to any category (regardless of whether other categories have changed)
• Any asset previously declared has been cancelled or transferred (a partial exit from the declared position requires an update)

If your declared foreign portfolio is worth €100,000 in Year 1 and €105,000 in Year 2, no Modelo 720 is required for Year 2. If it grows from €100,000 to €121,000, a full update of Category B is required.

Note: This does not mean you should ignore your foreign assets in years when no Modelo 720 is required. The income those assets generate must still be declared on your annual IRPF return. A bank account that generates €2,000 in interest must be declared on IRPF whether or not the account’s balance triggers a Modelo 720 update.

UK assets post-Brexit: what Spanish residents need to know

UK nationals who are Spanish tax residents, and Spanish nationals who have lived in the UK and hold UK financial assets, are among the most frequent Modelo 720 filers. Common UK assets that require declaration include:

ISAs. Stocks and shares ISAs and cash ISAs are held at UK financial institutions and are categorised as Category B (investment accounts) and Category A (savings/cash accounts) respectively. ISAs have no equivalent tax-free status in Spain — the interest, dividends, or gains they generate are fully taxable on the Spanish IRPF return. And the underlying accounts/portfolios must be declared on Modelo 720 if they exceed the threshold.

SIPPs and personal pensions. A SIPP with a fund value exceeding €50,000 is generally declarable in Category B. The declaration requires the current transfer value. Annuity pensions in payment (where the capital has been converted to a guaranteed income with no transfer value) are generally not declarable as there is no realisable capital value.

UK property. Jointly-owned UK residential property must be declared in Category C if the acquisition cost (per declaring resident, not the total property value) exceeds €50,000. For a Spanish-resident individual who jointly owns a UK property with a non-resident family member, only their share of the acquisition cost is relevant for the threshold.

UK bank accounts. Current and savings accounts at UK banks are Category A. Post-Brexit, these are foreign accounts for Modelo 720 purposes — even accounts at UK branches of Spanish banks (Santander UK, BBVA UK) if the account’s IBAN is a GB IBAN.

Modelo 721: virtual assets held abroad

Since 2024, Spain introduced a parallel obligation: Modelo 721 for virtual assets (activos virtuales) held abroad. The first filing obligation applied to assets held as of 31 December 2023, with the return due in early 2024.

Modelo 721 covers:

• Cryptocurrency (Bitcoin, Ethereum, etc.) held at foreign exchanges (Binance, Coinbase, Kraken, and others not registered with the CNMV in Spain)
• NFTs and other tokenised assets with a value above the threshold
• Stablecoins held at non-Spanish platforms
• Cryptocurrency held in self-custody wallets (Ledger, Trezor, MetaMask, etc.)

The same €50,000 threshold applies: if the aggregate value of all foreign virtual assets exceeds €50,000 on 31 December, Modelo 721 must be filed in the January–March window.

Crypto held at Spanish-registered exchanges or custodians is reported separately on domestic forms (not Modelo 721), but the taxable gains and losses must still be reported on IRPF. For clients with significant crypto portfolios spanning both Spanish and foreign platforms, BMC prepares a consolidated crypto tax position covering IRPF reporting, Modelo 720, and Modelo 721 as an integrated package.

See our dedicated guide on Spain crypto tax and Modelo 721 for the full crypto compliance picture.

Late filing and regularisation: what to do if you have missed prior years

If you are a Spanish tax resident who has not filed Modelo 720 for past years and believes you were obliged to, the recommended course of action is voluntary regularisation before the AEAT initiates any enquiry.

Voluntary late filing (espontánea, without prior AEAT contact) triggers the reduced surcharge regime:

• Filed within 3 months of the original deadline: 5% surcharge + interest
• Filed 3–6 months late: 10% surcharge + interest
• Filed 6–12 months late: 15% surcharge + interest
• Filed more than 12 months late: 20% surcharge + interest (no penalty, just surcharge)

Filing after AEAT contact (in response to a requerimiento or notificación) triggers the formal penalty regime: €200 per data item with minimums per category.

BMC manages multi-year Modelo 720 regularisations regularly. We prepare all missing declarations, calculate the total exposure, and file in a sequence that minimises surcharges and provides the cleanest possible voluntary regularisation record.

The interaction with IRPF: why the two must align

Every Modelo 720 declaration creates a cross-reference point for the AEAT. If you declare a UK savings account with a 31 December balance of €80,000 on Modelo 720 but your IRPF return does not reflect any interest income from that account, the AEAT’s automatic cross-check system (Servicio de Análisis de Riesgos) will flag the inconsistency.

The consequences range from an automatic requester (AEAT data request) requiring you to explain the discrepancy, to a formal inspection leading to a corrected IRPF assessment with penalties. BMC reviews the Modelo 720 against the prior year IRPF before filing both, ensuring the declared foreign asset position and the income reporting are fully consistent.

BMC’s Modelo 720 engagement structure

First-time filings. For clients filing Modelo 720 for the first time, we conduct a full foreign asset inventory, apply the threshold test per category, prepare the complete declaration with all required data points, and submit electronically. We also prepare a summary document listing all declared assets with their 720 reference data, which is updated annually as the reference record.

Annual update review. For existing Modelo 720 filers, we conduct an annual review in January–February to determine whether any category has increased by more than €20,000 since the last declaration. If yes, we prepare an update declaration. If no, we document the no-filing decision. We also check whether any new foreign assets have been acquired.

Late regularisation. For clients who missed Modelo 720 for prior years, we calculate the total surcharge exposure, prepare all missing declarations in the correct sequence, and file them with the AEAT as a voluntary regularisation package.

Frequently asked questions

I am a Spanish resident who also holds a Spanish bank account abroad (e.g. Santander UK). Does it count? Yes. The territorial criterion is where the account is held — if the financial institution is based outside Spain and the account has a non-Spanish IBAN, it is a foreign account for Modelo 720 purposes, regardless of the bank’s ultimate parent. A Santander UK account is a UK account.

My foreign property is jointly owned with my non-resident spouse. What do I declare? You declare your share of the acquisition cost. If you hold a 50% undivided share of a French property that was acquired for €200,000 total, your share is €100,000 — above the €50,000 threshold. Your non-resident spouse has no Spanish Modelo 720 obligation (they are not a Spanish tax resident). You declare the asset, they do not.

What happens if the value of my declared portfolio drops below €50,000? Once an asset or category is declared, you do not remove it from future declarations simply because the value falls below the threshold. You must continue declaring the asset until it is fully sold or transferred. A partial reduction below €50,000 does not end the obligation — only a complete disposal or transfer of the asset removes it from future declarations.

I have a US 401(k) from employment in the United States. Do I need to declare it? Yes, if the fund value on 31 December exceeds €50,000 and you are a Spanish tax resident. US defined contribution retirement accounts (401(k), IRA, Roth IRA) are declarable in Category B (income rights with realisable value). The declaration does not create Spanish tax on the account — withdrawals are taxable on IRPF when received — but the account must be declared on Modelo 720 if above the threshold.

The deadline has passed. Can I still file? Yes — late filing is better than non-filing. Voluntary late filing (without any prior AEAT contact) triggers surcharges but not penalties. BMC can file the late return and manage the resulting surcharge payment as part of the regularisation engagement.