If you live in Spain — or spend enough time here to become a tax resident — one of the first questions you’ll face is whether you must declare your foreign bank accounts, investments, or crypto holdings. The short answer is: yes, in many cases you do. Spain has strict reporting rules for overseas assets, and failing to comply can lead to penalties.

This guide explains what you must declare, when, and which assets are included, from traditional bank accounts to crypto wallets, ETFs, ISAs, 401(k)s, SIPPs, and offshore structures.

Who Needs to Declare Foreign Assets in Spain?

You must declare foreign assets if you are a Spanish tax resident. You are considered tax resident if:

• You spend more than 183 days per year in Spain, or
• Your main economic interests are in Spain, or
• Your spouse and minor children live in Spain

If you are not a tax resident, you do not need to declare foreign assets.

Learn more about Spanish tax residency rules.

What Form Do You Use? Modelo 720

Foreign assets are reported using Modelo 720, Spain’s informative declaration for overseas holdings. It is not a tax return — it is a reporting obligation.

You must file Modelo 720 if the total value of assets in any of these categories exceeds €50,000:

1. Bank accounts
2. Investments and securities
3. Real estate abroad

If you already filed it in the past, you only need to file again if the value increases by more than €20,000 or if you close/open accounts.

1. Do I Need to Declare Foreign Bank Accounts?

Yes — if the combined balance of all foreign bank accounts exceeds €50,000.

This includes:

• Current accounts
• Savings accounts
• Joint accounts
• Online banks (Revolut, N26, Wise, Monzo, etc.)
• Offshore accounts

You must report:

• Bank name
• Account number
• Maximum balance during the year
• End‑of‑year balance

2. Do I Need to Declare Foreign Investments?

Yes — if the total value exceeds €50,000. This category includes:

• ETFs
• Stocks and shares
• Bonds
• Mutual funds
• Investment platforms (eToro, Interactive Brokers, Vanguard, etc.)
• ISAs (UK)
• 401(k) plans (US)
• SIPPs (UK)
• Offshore investment bonds

Even if these accounts are tax‑advantaged in your home country, Spain still requires reporting.

For example:

• A UK ISA is tax‑free in the UK — but not in Spain.
• A US 401(k) is tax‑deferred in the US — but Spain may tax withdrawals.
• A SIPP is treated as a foreign pension plan and must be declared.

3. Do I Need to Declare Crypto?

Yes — crypto is now explicitly included in Spain’s foreign asset reporting rules.

You must declare:

• Crypto held on foreign exchanges (Binance, Coinbase, Kraken, etc.)
• Crypto held in custodial wallets
• Staking rewards
• NFTs (if held on foreign platforms)

Crypto held in private wallets (cold wallets) may fall under separate reporting rules, but Spain increasingly treats all crypto as declarable.

4. Do I Need to Declare Foreign Real Estate?

Yes — if you own property abroad worth more than €50,000, you must declare:

• Market value
• Address
• Ownership percentage

This applies even if the property is not rented out.

What Happens If You Don’t Declare?

Spain used to impose extremely high penalties, but the EU forced Spain to reduce them. Still, non‑compliance can lead to:

• Fines for missing or incorrect information
• Tax audits
• Reclassification of undeclared assets as unexplained income

It’s always safer to file Modelo 720 correctly.

Key Takeaways

• If you are a Spanish tax resident, you must declare foreign assets.
• Use Modelo 720 if any asset category exceeds €50,000.
• You must declare bank accounts, investments, pensions, crypto, and foreign property.
• ISAs, 401(k)s, SIPPs, ETFs, and offshore accounts are all included.
• Crypto on foreign exchanges must also be reported.

Need help declaring your foreign assets in Spain?

If you want expert guidance on Modelo 720, foreign investments, crypto reporting, or expat tax planning, I can help you navigate everything clearly and correctly. Start with foreign asset reporting help or ask about expat tax services.

Let’s make your Spanish tax obligations simple and stress‑free.