[Spain: Self-Custodied Crypto Assets Do Not Require Form 721 Declaration] Golden Finance reported on September 29, citing crypto.news, that the Spanish tax authority has confirmed that as long as holders control their private keys and assets are not custodied by foreign third parties, self-custodied wallet crypto assets do not need to be declared under Form 721. This stance originates from a binding response V0848 26 issued by the tax agency on April 21. Form 721 applies to virtual currencies held abroad by institutions that custody private keys on behalf of clients; the determining criterion is the ownership of private key control, with hot and cold wallets treated equally. The threshold for this framework is €50,000.