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Federal Central Tax Office

Tax identification number, allocation (BZSt)

Germany is following the example of many of its neighbors in the European Union and is modernizing its complicated and expensive tax system. With the introduction of the tax identification number (IdNr), the Federal Ministry of Finance...

Germany is following the example of many of its neighbors in the European Union and is modernizing its complicated and expensive tax system. 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. The IdNr will replace the tax number in future for income tax purposes. For a transitional period it is necessary that both numbers are used in parallel. The IdNr remains valid for life and does not change if you move or get married. The IdNr is an 11-digit number and does not contain any information about you or the responsible tax office.
You will receive the tax identification number (including children, since tax liability can arise from birth) for clear identification in the taxation procedure.
You will be informed automatically by letter from the BZSt after your birth or when you first move to Germany from abroad as soon as the registration authority has sent the required data to the BZSt.
Will replace the tax number in the future for the area of income tax. For a transitional period it is necessary that both numbers are used in parallel.
Remains valid throughout your life and does not change when you move or get married.
Is an 11-digit number and does not contain any information about you or the responsible tax office.
The tax identification number can be seen in the following documents, among others:
income tax assessment
Income tax certificate
Notice from the BZSt
Other correspondence with the tax office
Is available to your current employer for wage tax deduction

If your IdNr cannot be found, it can be requested again using an input form from the Federal Central Tax Office (see links).

Address and contact information

Address

Federal Central Tax Office
Infocenter
An der Küppe 1 53225 Bonn

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Important notes

Prerequisites

  • A domestically registered resident

Documents required

No

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 notification of the ID number can take up to 4 weeks. For data protection reasons, the ID number can only be given by letter.

Deadlines

No

Procedure & Fees

Procedure

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.

Fees

No

Legal notes

Legal basis

§§ 139a and
139b tax code.

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