How does Hacienda detect crypto?

AEAT detection methods:

1. Information requirements to Spanish exchanges (Bit2Me, Bitnovo)
2. Cross-referencing Models 172/173 from other taxpayers
3. EU DAC8 directive — European exchanges must share user data with tax authorities
4. Blockchain analysis tools
5. Third-party reports

Penalties for non-declaration: 50-200% of unpaid tax + late payment interest

Best protection: File correctly with complete documentation. kointax provides all required Spanish tax models and calculation documentation.

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