De-normalize a national format of German tax number (Steuernummer)
Normalize a German steuernummer to the national format
Validation of German Steuernummern
Get information about a German tax office (Finanzamt)
A simple package to validate German personal TAX-ID
Validates with regex the German Steuernummer and allows to return the region (Bundesland) and/or unified region number (Vereinheitlictes Bundesschema)
A Ruby gem for German tax system utilities including Steuernummer conversion between formats, and other tax-related functionality.