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Hamburg-Harburg tax office

Tax identification number, notification (tax offices)

With the introduction of the tax identification number (IdNr), the Federal Ministry of Finance and the Federal Government want to simplify the taxation process and reduce bureaucracy.

Detailed description

You can see the personal tax identification number (IdNr) in the following documents:

  • Income tax notice
  • Income tax certificate
  • Information letter from the tax office about the electronic wage tax deduction features (sent in October/November 2011)
If your ID number cannot be found, you can request it again using an input form from the Federal Central Tax Office (see links).




  • A domestically registered resident

Documents required


Please note

The local tax offices cannot issue tax identification numbers and cannot influence the allocation process of the Federal Central Tax Office.
The registration offices are responsible for changing the civil status data in the registration register (e.g. marriage, birth).




  • The identification number (IdNr) will be sent to you automatically by letter from the BZSt after your birth or when you move to Germany from abroad for the first time, as soon as the registration authority has sent the required data to the BZSt.

Processing time

It may take up to 4 weeks for your IdNo to be communicated.

When registering for the first time in Germany or after birth, shipping can take 4-8 weeks.

If it has not been sent after 3 months, it is also advisable to submit a written application to the BZSt, stating the required data.



Legal remedies


Legal basis

§§ 139a and 139b tax code.

Address and contact information

Hamburg-Harburg tax office

Mon - Tue 8 a.m. - 2 p.m., Thurs 8 a.m. - 5 p.m., closed on Wednesdays and Fridays

Postfach 90 03 52, 21043 Hamburg. Briefkasten vorhanden. Behinderteneingang rechts neben dem Haupteingang. Bei der ersten Leerung des Tages wird als Eingang das Datum des vorherigen Werktages (Samstag kein Werktag) auf den Schreiben vermerkt.

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Keywords: Identification feature ID No. Tax ID Tax ID number Tax ID No. ID no

Last updated: 12.07.2024