If you are a Spanish tax resident with bank accounts, investments, or property abroad, Form 720 (Modelo 720) is one of the most critical—and potentially costly—compliance obligations you face. This informative declaration requires you to report foreign assets exceeding €50,000 in any of three categories: bank accounts, securities/investments, or real estate. Failure to file, late filing, or filing with errors triggers penalties starting at €300 and potentially reaching €20,000 per category, and in extreme cases, the Spanish Tax Agency historically treated undeclared assets as taxable income with penalties up to 150% of deemed gains (though recent reforms have moderated these penalties).
What makes Form 720 uniquely challenging is that it is NOT a tax return—you don’t pay tax with it—but it is a mandatory reporting obligation that feeds into your annual income tax (Modelo 100) and wealth tax (Modelo 714) filings.
Many expats discover Form 720 only after moving to Spain, and by then they have often missed the March 31st deadline for their first year of residency, triggering automatic penalties. This comprehensive guide answers the three essential questions: WHO must file Form 720 (Spanish tax residents with foreign assets >€50,000 in any category, including expats, digital nomads, retirees, and dual citizens), WHAT assets must be declared (bank accounts, brokerage accounts, life insurance, foreign real estate, shares in foreign companies, and—critically—cryptocurrencies held on custodial exchanges), and WHEN you must file (January 1–March 31 annually, with the declaration covering assets held as of December 31 of the prior year). Whether you just moved to Spain and hold foreign assets from your home country, you’re an expat with an inherited property abroad, or you’re a digital nomad with crypto holdings on Binance or Kraken, this guide provides clear examples, step-by-step filing instructions, and practical strategies to avoid penalties—and the clarity to know when you need professional tax advice to navigate this complex obligation.
Part I: Understanding Form 720—What It Is and Why It Exists
What Is Form 720 (Modelo 720)?
Form 720 (Declaración Informativa sobre Bienes y Derechos Situados en el Extranjero) is an annual informative declaration that Spanish tax residents must file to report foreign assets exceeding €50,000 in any of three categories.
Key characteristics:
- It is NOT a tax return (you don’t pay tax when filing Form 720)
- It is purely informative (it tells the Spanish Tax Agency what foreign assets you own)
- It is mandatory if you meet the filing thresholds
- It feeds into other tax obligations (income tax, wealth tax, and future capital gains tax calculations)
Why does Form 720 exist?
The Spanish government introduced Form 720 in 2013 as part of its strategy to combat tax evasion and enhance financial transparency in cross-border holdings. The form serves several purposes:
- Prevent tax evasion (ensure Spanish residents report worldwide income)
- Combat money laundering (track large international asset movements)
- Align with international tax cooperation (OECD Common Reporting Standard, FATCA for US persons)
- Help taxpayers comply with Spanish tax obligations (by creating a central database of foreign assets)
How Form 720 Relates to Other Spanish Tax Obligations
Form 720 does NOT replace other tax returns. It complements them:
| Form | Purpose | Is it a tax return? | When filed? |
|---|---|---|---|
| Modelo 720 | Declare foreign assets >€50,000 | ❌ No (informative only) | Jan 1–Mar 31 |
| Modelo 100 | Annual income tax return (IRPF) | ✅ Yes (pay tax on income) | April–June |
| Modelo 714 | Wealth tax return | ✅ Yes (pay tax on assets >€700K) | April–June |
| Modelo 210 | Non-resident income tax (if you’re not resident) | ✅ Yes (pay tax on Spanish income) | Quarterly |
| Modelo 721 | Declare foreign crypto assets on custodial exchanges | ❌ No (informative only) | Jan 1–Mar 31 |
Why this matters: If you fail to file Form 720 but later file Modelo 100 (income tax) reporting foreign investment income, the Spanish Tax Agency will notice the discrepancy and assess penalties for non-compliance with Form 720.
Part II: WHO Must File Form 720?
The Core Rule: Spanish Tax Residents with Foreign Assets >€50,000
You must file Form 720 if ALL of the following conditions are met:
- You are a Spanish tax resident (you spent 183+ days in Spain during the calendar year OR your main economic interests are in Spain)
- You own foreign assets (assets located outside Spain’s territory)
- The total value of foreign assets in ANY ONE CATEGORY exceeds €50,000 as of December 31 of the reporting year
The three categories are:
- Category 1: Bank accounts and deposits held abroad
- Category 2: Securities, investments, life insurance, and annuities held abroad
- Category 3: Real estate and real property rights held abroad
Important: The €50,000 threshold applies to each category SEPARATELY. If you exceed the threshold in one category, you must declare ALL assets in that category (even if individual assets are below €50,000).
Who Qualifies as a Spanish Tax Resident?
You are a Spanish tax resident if ANY of the following apply:
1. Physical presence test: You spend 183+ days in Spain during a calendar year (January 1–December 31)
2. Economic interest test: Your main economic interests or business activities are in Spain (even if you spend <183 days in Spain)
3. Family residence test: Your spouse and/or dependent children reside in Spain (creates presumption of Spanish tax residency)
Examples:
Example 1: British expat moves to Spain
- You moved from London to Madrid on July 1, 2025
- You spent 184 days in Spain in 2025 (July 1–December 31)
- Result: You are a Spanish tax resident for 2025
- Form 720 obligation: Yes, if you have foreign assets >€50,000 in any category as of December 31, 2025 (you must file Form 720 by March 31, 2026)
Example 2: Digital nomad splits time between Spain and Portugal
- You spent 150 days in Spain and 150 days in Portugal in 2025
- Your main business (freelance consulting) is conducted from Spain
- Result: You are a Spanish tax resident for 2025 (economic interest test)
- Form 720 obligation: Yes, if you have foreign assets >€50,000
Example 3: Spanish citizen working in the US
- You’re a Spanish citizen but live and work in New York
- You spent 30 days in Spain in 2025 (visiting family)
- Result: You are NOT a Spanish tax resident for 2025 (you’re a US tax resident)
- Form 720 obligation: No
Specific Cases: Who Must File
Expats Who Just Moved to Spain
Scenario: You moved to Spain in 2025 and became a Spanish tax resident. You left behind bank accounts, retirement accounts, and possibly property in your home country.
Form 720 obligation: Yes, you must file Form 720 by March 31, 2026 (covering assets held as of December 31, 2025) if any category exceeds €50,000.
Common mistake: Many expats don’t realize Form 720 applies to them in their FIRST YEAR of Spanish residency. You must file even if you’ve only been a Spanish resident for 6 months.
Digital Nomads and Remote Workers
Scenario: You work remotely from Spain and hold foreign bank accounts (PayPal, Wise, Revolut), foreign brokerage accounts (US stocks), and crypto on foreign exchanges (Binance, Kraken).
Form 720 obligation: Yes, if you’re a Spanish tax resident and any category exceeds €50,000.
Important for crypto holders: Cryptocurrencies held on custodial exchanges (Binance, Kraken, Coinbase) located outside Spain are reportable under Modelo 721 (a separate form specific to crypto), NOT Modelo 720. However, if you hold fiat currency (EUR, USD, GBP) on foreign exchanges, that may be reportable under Modelo 720 (Category 1: bank accounts).
Retirees with Foreign Pensions and Property
Scenario: You retired to Spain from the UK. You receive a UK state pension and a private pension from a UK pension fund. You own a house in London that you rent out.
Form 720 obligation: Yes, if any of the following exceed €50,000:
- UK pension fund balance (Category 2: securities/investments/life insurance)
- UK rental property value (Category 3: real estate)
- UK bank accounts (Category 1: bank accounts)
Note: UK state pension payments you receive are taxable in Spain (reportable on Modelo 100), but the pension fund itself must be declared on Form 720 if its value exceeds €50,000.
Dual Citizens (Spanish + Another Nationality)
Scenario: You’re a Spanish citizen who lived abroad (US, Canada, UK, etc.) for many years and now returned to Spain. You still hold foreign bank accounts, property, and investments from your time abroad.
Form 720 obligation: Yes, once you become a Spanish tax resident again, you must file Form 720 if any category exceeds €50,000.
Common mistake: Dual citizens sometimes assume that because they’re Spanish citizens, they’re exempt from reporting foreign assets. This is WRONG. Spanish tax residency (not citizenship) triggers the Form 720 obligation.
Heirs Who Inherit Foreign Assets
Scenario: You’re a Spanish tax resident and you inherit foreign assets (foreign bank account, foreign property) from a deceased relative abroad.
Form 720 obligation: Yes, if the inherited foreign assets exceed €50,000 in any category, you must file Form 720 in the year following the inheritance.
Example: Your parent in Canada passed away in October 2025 and left you a Canadian bank account with CAD $80,000 (~€55,000). You accept the inheritance in November 2025. You must file Form 720 by March 31, 2026, reporting the Canadian bank account (Category 1).
Part III: WHAT Assets Must Be Declared?
The Three Categories of Foreign Assets
Form 720 divides foreign assets into three categories. You must file if ANY ONE category exceeds €50,000 total value.
[Image of diagram illustrating the three asset categories of Modelo 720]
Category 1: Bank Accounts and Deposits Held Abroad
What must be declared:
- ✅ Checking accounts (current accounts)
- ✅ Savings accounts
- ✅ Time deposits and certificates of deposit
- ✅ Accounts where you are the holder, joint holder, or have signing authority (power of attorney)
- ✅ Accounts where you are designated as a beneficiary
- ✅ Dormant accounts (even if you haven’t used them in years)
- ✅ Fiat currency held on foreign exchanges (e.g., USD balance on a foreign trading platform)
What does NOT need to be declared:
- ❌ Spanish bank accounts (even if the bank is foreign-owned, e.g., Santander UK branch in Spain is NOT foreign)
- ❌ Accounts with balances below €50,000 total across all accounts
Valuation: Use the balance as of December 31 of the reporting year. If the balance fluctuated during the year, only the December 31 balance matters.
Examples:
Example 1: Expat with multiple foreign bank accounts
- You have:
- UK bank account: £25,000 (~€29,000)
- US bank account: $30,000 (~€27,000)
- Canadian bank account: CAD $5,000 (~€3,500)
- Total: ~€59,500
- Form 720 obligation: YES (Category 1 total exceeds €50,000)
- What to declare: ALL three accounts (even though individually each is below €50,000)
Example 2: Joint account with spouse
- You and your spouse jointly own a US bank account with $120,000 (~€108,000)
- Your share: €54,000 (50% of €108,000)
- Form 720 obligation: YES (your share exceeds €50,000)
- What to declare: The full account value (€108,000) specifying your 50% ownership percentage
Example 3: Dormant UK account you forgot about
- You moved from UK to Spain 5 years ago
- You have a dormant UK savings account with £60,000 (~€70,000) that you forgot about
- Form 720 obligation: YES (Category 1 exceeds €50,000)
- What to declare: The UK account (even if dormant and you haven’t used it in years)
Category 2: Securities, Investments, Life Insurance, and Annuities Held Abroad
What must be declared:
- ✅ Shares and stocks in foreign companies (US stocks, UK stocks, etc.)
- ✅ Bonds and obligations
- ✅ Mutual funds and ETFs held in foreign accounts
- ✅ Brokerage accounts (Fidelity, Vanguard, Interactive Brokers, etc.)
- ✅ Life insurance policies issued by foreign insurers
- ✅ Pension funds and retirement accounts (401(k), IRA, UK SIPP, Canadian RRSP)
- ✅ Annuities held abroad
- ✅ Participation in foreign investment vehicles (trusts, partnerships, etc.)
What does NOT need to be declared:
- ❌ Spanish securities held in Spanish brokerage accounts
- ❌ Securities with total value below €50,000 across all holdings
Valuation: Use the market value as of December 31 of the reporting year.
Examples:
Example 4: US expat with retirement accounts
- You’re a US citizen who moved to Spain and became a Spanish tax resident
- You have:
- 401(k) with Fidelity: $150,000 (~€135,000)
- Roth IRA with Vanguard: $80,000 (~€72,000)
- Taxable brokerage account with Charles Schwab: $40,000 (~€36,000)
- Total: ~€243,000
- Form 720 obligation: YES (Category 2 far exceeds €50,000)
- What to declare: ALL three accounts (401(k), Roth IRA, brokerage account)
Example 5: British expat with UK pension
- You have a UK private pension (SIPP) with £80,000 (~€93,000)
- Form 720 obligation: YES (Category 2 exceeds €50,000)
- What to declare: The UK pension fund value as of December 31
Example 6: Crypto investor (custodial exchange)
- You hold $100,000 (~€90,000) in Bitcoin and Ethereum on Binance (custodial exchange located outside Spain)
- Form 720 obligation: NO—crypto on custodial exchanges is declared on Modelo 721, NOT Modelo 720
- However: If you also hold fiat currency (USD, EUR) on Binance, that MAY be reportable under Modelo 720 (Category 1: bank accounts)
Category 3: Real Estate and Real Property Rights Held Abroad
What must be declared:
- ✅ Houses and apartments (residential property)
- ✅ Commercial property (offices, shops, warehouses)
- ✅ Land (plots, agricultural land)
- ✅ Real rights over real estate (usufruct, lease rights, partial ownership)
- ✅ Partial ownership in foreign property (e.g., you own 50% of a property with your sibling)
What does NOT need to be declared:
- ❌ Spanish real estate (even if you bought it as a foreigner)
- ❌ Property with total value below €50,000 (calculated at acquisition cost, not current market value)
Valuation: Use the acquisition cost (purchase price), NOT current market value. This is a critical distinction.
Examples:
Example 7: British expat with UK property
- You own a house in London that you purchased in 2015 for £300,000 (~€348,000 at 2015 rates)
- Current market value: £500,000 (~€580,000)
- Form 720 valuation: Use acquisition cost (£300,000 converted at the exchange rate when you purchased it = ~€348,000)
- Form 720 obligation: YES (Category 3 exceeds €50,000)
- What to declare: The London property at acquisition cost (~€348,000)
Example 8: Inherited property abroad</p
