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Modelo 720: declare your foreign assets correctly and avoid penalties

Spanish tax residents must declare foreign assets over €50,000 on Modelo 720. Avoid severe penalties with expert filing and compliance from BMC.

Review your Modelo 720 obligations

The problem

When Spain introduced Modelo 720 in 2013, it imposed penalties so disproportionate that the European Court of Justice ruled against Spain in January 2022. While the penalty structure was revised, the obligation itself remains fully intact — and Spanish tax residents who fail to declare their foreign bank accounts, investments, and real estate above the 50,000-euro threshold still face substantial automatic surcharges and potential criminal liability for tax fraud. Many Spanish tax residents — both Spanish nationals and expatriates — are either unaware of the obligation or misunderstand the grouping rules and filing triggers. The declaration covers three categories: foreign bank accounts, securities and financial assets held at foreign brokers, and real estate located outside Spain. Each category is assessed independently, and the 50,000-euro threshold applies per category, not in aggregate. Missing a single category, or understating values, can trigger the same scrutiny as a complete non-filing.

Our solution

BMC has managed Modelo 720 filings for international clients since the form was introduced. We review your entire foreign asset position, apply the correct valuation methodology for each asset class, determine which categories are above the threshold and therefore reportable, and prepare and submit the declaration by the March deadline. We also advise on Modelo 721, introduced in 2024 for virtual assets (cryptocurrency and other digital assets held at foreign exchanges or in self-custody wallets above the threshold). The interaction between Modelo 720, Modelo 721, and the underlying income declarations (IRPF and IRNR) must be managed consistently to avoid triggering automatic inconsistency checks by the AEAT.

Process

How we do it

1

Foreign asset inventory

We work with you to identify every foreign asset subject to the declaration: bank and savings accounts, brokerage and investment accounts, pension schemes, life insurance with investment element, and real estate outside Spain. We apply the correct valuation date (31 December) and methodology for each asset class.

2

Threshold and trigger analysis

We assess whether each of the three categories (accounts, securities, real estate) exceeds the 50,000-euro threshold and therefore requires declaration. We also identify whether a subsequent year requires an update declaration — only required if any category increases by more than 20,000 euros since the last filed declaration.

3

Modelo 720 (and 721) preparation and filing

We prepare the complete declaration, including the legal titularity details, entity identifiers, and account numbers required for each asset. For crypto and digital assets, we prepare the parallel Modelo 721 covering foreign exchange holdings and self-custody wallets. Both are filed online by the 31 March deadline.

4

Consistency review with income returns

We reconcile the assets declared on Modelo 720/721 with the income declared on your annual IRPF return, ensuring dividends, interest, capital gains, and rental income from foreign assets are correctly reported in both places. Inconsistencies between the two filings are a primary trigger for AEAT audit selection.

€50,000
Per-category threshold triggering the obligation
31 Mar
Annual filing deadline
2024
Year Modelo 721 for crypto assets introduced

I had accounts in Germany, the US, and the UK that I had no idea I needed to declare in Spain. BMC reviewed everything, prepared the declarations, and explained exactly which assets were reportable and why. The whole process was straightforward once I had the right advisors.

Gabriele Hoffmann Senior executive, Spanish tax resident since 2019, Private client, originally from Frankfurt

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What Modelo 720 is — and what it is not

Modelo 720 is an informational declaration, not a tax return. Filing it does not by itself create a tax liability. Its purpose is to inform the Spanish Tax Authority (AEAT) about the existence, ownership, and approximate value of assets held outside Spain by Spanish tax residents. The AEAT then cross-references this data against income tax returns to verify that foreign-source income (interest, dividends, rental income, capital gains) is being correctly declared.

The three categories are assessed independently:

  1. Foreign bank and savings accounts — valued at the balance on 31 December and the average balance for Q4
  2. Securities, investments, and financial assets held at foreign brokers, insurers, or pension managers
  3. Real estate outside Spain — valued at acquisition cost or cadastral equivalent

Each category is assessed at 50,000 euros independently. A taxpayer with €45,000 in a foreign bank account and €40,000 in foreign securities has no obligation — neither category exceeds the threshold. A taxpayer with €55,000 in foreign securities and €30,000 in a foreign bank account must declare the securities category but not the accounts.

The 2022 reform: what changed and what did not

The European Court of Justice ruling in January 2022 (Case C-788/19) fundamentally changed the penalty landscape. Spain’s original penalties — a fixed minimum of €1,500 per asset class with no cap, plus a 150% punitive surcharge with no statute of limitations — were found to violate EU law. The reforms that followed:

  • Replaced the 150% surcharge with standard late-filing surcharges (5%, 10%, 15%, or 20% depending on delay)
  • Applied the normal four-year statute of limitations to Modelo 720 infractions
  • Removed the presumption that undeclared foreign assets represented undisclosed income

This does not mean the obligation is now trivial. Late filing still carries surcharges, and the AEAT continues to use Modelo 720 data as a primary tool for identifying undeclared income. The change is that the consequences are now proportionate rather than punitive.

Modelo 721: the crypto parallel obligation

Since 2024, Spanish tax residents must separately declare virtual assets held at foreign service providers on Modelo 721. The same 50,000-euro threshold applies, and the same 31 March deadline. The form requires identification of each asset type (Bitcoin, Ethereum, stablecoins, NFTs), the platform or wallet holding them, and the total value on 31 December.

Self-custody wallets — hardware wallets, software wallets, paper wallets not held through a platform — are also within scope if the aggregate value exceeds the threshold. This is a significant compliance challenge for active crypto holders, and BMC has developed specific procedures for reconstructing valuations and documenting wallet holdings.

Planning considerations for new Spanish residents

If you are planning to become a Spanish tax resident and have significant foreign assets, the period immediately before your residency begins is the optimal time to review your portfolio. Assets that are rearranged while you are still a non-resident have different consequences from rearrangements made as a resident. BMC’s pre-arrival planning service addresses Modelo 720 obligations alongside IRPF entry planning, Beckham Law eligibility, and wealth tax exposure.

Common mistakes we correct

  • Valuing at cost rather than market value for securities — AEAT requires market value at 31 December
  • Omitting employer equity schemes — unvested options and RSPs held at foreign brokers count
  • Ignoring foreign life insurance with an investment component — these fall under Category 2
  • Not filing an update declaration when a portfolio grows beyond the 20,000-euro annual increase threshold
  • Inconsistencies between Modelo 720 and IRPF — the most common audit trigger
FAQ

Frequently asked questions

Modelo 720 is an informational declaration that Spanish tax residents must file if the total value of any of three categories of foreign assets exceeds 50,000 euros on 31 December of the preceding year: (1) accounts in financial institutions outside Spain, (2) securities, insurance, and income from foreign sources, and (3) real estate outside Spain. The declaration is purely informational — it does not itself create a tax liability — but failure to file, or filing incorrectly, can result in penalties and triggers additional scrutiny of your income tax returns.
Spain's original Modelo 720 penalties were exceptionally severe: a minimum of 10,000 euros per unreported asset, plus a 150% surcharge on any tax imputed to the undeclared assets, with no statute of limitations. In January 2022, the European Court of Justice ruled this penalty structure violated EU law and the principle of proportionality. Spain revised the law in 2022, replacing the 150% surcharge with the standard late-filing surcharges (5-20% plus interest) and applying the four-year statute of limitations. The filing obligation itself was unchanged.
No. Once an initial Modelo 720 is filed, you only need to file an updated declaration in subsequent years if the value of any reported category has increased by more than 20,000 euros compared to the last filed declaration, or if you have acquired new foreign assets that were not previously declared, or if you have disposed of previously declared assets. However, many advisors recommend filing annually for complete documentation, particularly for clients with actively managed investment portfolios.
Modelo 721 was introduced in 2024 as a parallel declaration specifically for virtual assets — cryptocurrency, tokens, and other digital assets — held at foreign exchanges or in self-custody wallets outside Spain. It follows the same 50,000-euro threshold and 31 March deadline as Modelo 720. Virtual assets held at Spanish-regulated exchanges are declared separately on Modelo 172/173 by the exchange itself. Self-custody wallets and foreign exchange holdings are the taxpayer's own responsibility under Modelo 721.
No, Modelo 720 is an informational return, not a tax return. However, it creates a detailed record of your foreign assets against which the AEAT cross-checks your annual IRPF return. If you declare foreign bank accounts on Modelo 720 but do not declare the interest income on your IRPF, this inconsistency is flagged automatically. Similarly, capital gains on securities declared on Modelo 720 that do not appear on the IRPF are a standard audit trigger. The declaration itself does not create tax — but accurate IRPF reporting of income from those assets is essential.
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