Field help: (2023) Identification number
Identification number

Enter the 11-digit tax identification number (Steuer-Identifikationsnummer) that was sent to you by the Federal Central Tax Office in writing. IdNr or tax ID is often used as an abbreviation.

As a rule, you can find your identification number in your last income tax assessment notice (Einkommensteuerbescheid), in your employment tax statement (Lohnsteuerbescheinigung) and in every letter from your tax office.

If you cannot find your tax ID, you can submit your income tax return even without the tax ID to your tax office. Your identification number is known there.

Note: If you no longer have your tax ID, you can request it from the Federal Central Tax Office. It will then be sent to you by post.

Request identification number