TIN – Check digit tools

Steuerliche Identifikationsnummer – Wikipedia

The tax identification number (or tax ID number) is a nationally standardized and permanent eleven-digit identification number for citizens registered in Germany for tax purposes.

The eleventh digit is a check digit that is calculated from the first ten digits of the number sequence.

GC Wizard offers the following check digit tools for TINs:

Checking the validity of a TIN

Calculate the check digit of a TIN

Calculate missing digits of a TIN

If the TIN is incorrect, correct options are calculated.