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Free compliance check

Audit your client data for GDPR and GoBD risks. No signup. Processed on Hetzner infrastructure in Germany.

• ✓ IBAN validation (DE / AT / CH / LI)
• ✓ Steuer-ID check digit (§ 139b AO)
• ✓ GDPR mandatory fields
• ✓ GoBD bookkeeping integrity
• ✓ DACH postal codes
• ✓ § 203 StGB tax-secrecy risks