Spain Exempts Self-Custody Crypto from Form 721 Reporting

Spain's tax authorities have clarified that cryptocurrency held in self-custody wallets does not need to be reported under Form 721, as long as the owner retains control of their private keys and the assets are not held by a foreign third-party custodian.

The guidance from Spain's Directorate General of Taxes sets out the treatment in binding consultation V0848 26, issued on April 21. The Spanish Tax Agency's guidance on Form 721 states that the reporting requirement depends on who controls and safeguards the private cryptographic keys.

Under the rules, Form 721 covers virtual currencies located abroad when they are held by entities that safeguard private cryptographic keys on behalf of customers or otherwise maintain, store, and transfer the assets. However, if a taxpayer keeps control of their own private keys, even in a hot wallet setup, it is not considered third-party custody.

The distinction between custodial and noncustodial wallets depends on whether control over the crypto assets or the keys remains with a third party or with the user. Regulated crypto custody has become more prominent in Spain's financial sector, with Cecabank launching a regulated custody platform in June after securing authorization for crypto custody.

Exclusion from Form 721 does not mean activity involving a self-custody wallet is outside every crypto reporting framework, as the European Union's DAC8 tax reporting regime requires reporting crypto asset service providers to collect information on reportable users and transactions. The filing obligation can extend beyond people who still hold qualifying assets on December 31.