Reviewed and updated: 29 October 2026. The original publication date is retained above.
Holding cryptoassets can raise more than one Spanish tax question. Transaction records, income, wealth and information reporting should be reviewed separately rather than reduced to a single form.
Keep a usable transaction history
Retain exchange statements and wallet records, including dates, amounts, fees and the nature of each transaction. Identify transfers between your own wallets separately from purchases, disposals, exchanges or rewards.
A record of the final balance alone may not explain what happened during the year. If records come from several platforms, prepare a consistent history before calculating the Spanish tax treatment.
Distinguish Modelo 720 from Modelo 721
Virtual currencies are not reported in Modelo 720. A separate information return, Modelo 721, may apply to qualifying virtual currencies held abroad through third-party custodians.
Custody arrangements matter. Whether you control the keys yourself or a third party safeguards them is relevant to the reporting analysis, together with the custodian’s location and the other applicable conditions.
Review the other obligations
The absence of a Modelo 721 filing obligation does not by itself resolve income-tax or wealth-tax questions. Equally, filing an information return does not replace any separate tax return that may be required.
Explore overseas asset reporting and Spanish tax returns to discuss the scope of a review.
Official reference: AEAT: Modelo 721 FAQ.