German Tax ID Validator

Validate German Tax IDs before form submission.

Collect reliable German Steueridentifikationsnummer values directly in your Jotform forms. This widget checks the 11-digit format, digit distribution, and MOD 11,10 checksum before submission, then saves the accepted IdNr in your preferred normalized format. It helps teams replace error-prone number fields with guided validation for tax-sensitive workflows.

Skorzystaj z tego widżetu, by:

• Verify employee Tax IDs during onboarding
• Collect validated IdNr values for payroll records
• Check contractor tax information before intake
• Support finance and compliance data collection
• And more!

Learn more about how to use the German Tax ID Validator widget in your forms.