Where Can I Find My Business Tax Number?
You can find your tax number in the top left corner of your most recent tax assessment notice from the tax office. If you are new to business, it will be in the notification letter informing you of your tax number. Alternatively, you can consult your tax advisor.
The Bundesschema (Federal) Tax Number Format
Please note that the Bundesschema (federal) format for tax numbers consists of 13 digits. Previous state-specific numbers contained 10 or 11 digits.
👉 On ELSTER.de, you can learn how to convert your existing tax number into the new format (in German) or you simply use the Steuernummer-Umrechner from the Bundesministerium für Finanzen (in German, too).
Which Tax Number Should I Use for the Online TSE?
Always use the tax number of your business. If you are a sole proprietor and only have one tax number, enter that one.
Do Not Enter Your Private Tax Number
Warning: Once a tax number has been entered, it cannot be changed later! Never enter your private tax number.
My Tax Number Is Not Accepted – What Should I Do?
If your tax number is not recognized, it is likely due to the format. Find out how to resolve this issue here: The Online-TSS does not accept my tax number