Crypto Tax Reporting (DAC8) FAQ
For Spanish nationals (individuals): Format = 8 digits + 1 letter Example: 12345678A For foreign individuals (NIE): Format = Letter (X/Y/Z or M) + 7 digits + control letter Example: X1234567T or M1234567A Found on ID, driver license, or Resident Permit.
Published on Feb 23, 2026Updated on Mar 16, 20263
