From the 2023 tax year (declared in 2024), Spanish tax residents must file Modelo 721 if they hold foreign crypto-asset balances exceeding €50,000 at year-end. The new form sits alongside Modelo 720 for foreign bank accounts and securities; failure carries minimum penalties.
Spanish tax residents holding crypto at non-Spanish custodians or self-custody addresses.
Primary: Agencia Tributaria ↗
Corroborating: Boletín Oficial del Estado ↗
Verified 2026-04-21 · methodology · report a correction