Skip navigation

Tax identification number (tax ID / IdNr.) - information and disclosure

All information on the tax identification number (IdNr.) can be found on the website of the Federal Central Tax Office (BZSt).

The BZSt is responsible for issuing the IdNr.

You will find your IdNr. on:

  • Your income tax assessment notice or non-assessment certificate (NV certificate)
  • Your income tax statement from your employer
  • a letter in income tax matters from the tax office

Please note that the tax office cannot provide any information about your ID number by telephone for reasons of data protection (necessary identity check) and that it is also not possible to send information by e-mail. If required, your ID number can only be communicated in writing to the address under registration law.

If you do not (or no longer) have your ID number, you can request a new ID number from the BZSt on the following website.

You can reach the BZSt by telephone on 0228 406-1240 (from abroad + 49 228 406-1240).

After the birth, the child will receive the ID number from the BZSt by letter a few weeks later (in individual cases, the notification may take a little longer).
The same applies if you are registering for the first time in Germany at a registration office (city / municipality) and do not yet have an IdNr.


This page uses cookies. You can find out more information about the General Data Protection Regulation under Data protection.