Field help: Identification number

Enter the 11-digit tax identification number (Steuer-Identifikationsnummer) that was sent to you by the Federal Central Tax Office in writing.

You have to enter the tax identification number of your children in your tax return. This number is necessary in order to take child allowances into account. The data is also used for comparisons with the child benefit offices and when transferring allowances.

If you no longer have the tax ID, parents can request it from the Federal Central Tax Office. The ID will then be sent to the child's registration address. Use the following link: Request identification number.

If your child does not live with you, but you are the legal custodian, please send your enquiry with proof of custody (e.g. divorce decree, custody arrangement) to:

Bundeszentralamt für Steuern
Referat St II 3
11055 Berlin

If you have any further questions, please contact your tax office