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The Steuer-ID is an 11-digit personal tax identification number. This guide is about the personal ID number, not a separate tax number issued for particular tax matters.
At a glance
- Chase after
- 3 months without a letter
- Validity
- For life; unchanged by moving or marriage
Your checklist
First steps
Your checklist stays on this device.
The Steuer-ID is personal and long-term
Germany assigns an 11-digit tax identification number to individuals. It is intended to identify you in tax administration and is different from a tax number used for a particular tax return or business matter.
Registration usually starts the process
After your registration office transmits the required data, the BZSt sends the number to your registered address. The linked BZSt page explains the official process and how to request the number again if necessary.
Keep personal data secure
Treat the number as personal information. Share it only when a legitimate form or authority asks for it, and use official channels if you need a replacement.
If the letter is delayed or missing
Check that your address registration was completed and that your name is visible on the mailbox. The BZSt sends the first Steuer-ID separately by post; it does not arrive as part of the Anmeldung appointment.
If the letter is missing or the number has been lost, follow the BZSt’s official retrieval instructions. Keep the number private and share it only through legitimate employer, tax, or government processes. Avoid sending identity documents through social media or unofficial lookup services.
Three months without a letter
Berlin’s service page says that after your first registration the Bürgeramt forwards your data to the BZSt, which sends the number by letter to your registered address. If no letter has arrived within three months of first registering in Germany, you can send your personal data to the BZSt, which then contacts the registration office.
The number stays valid for life and does not change when you move or marry. If you cannot find it, you can request a new notice from the BZSt online or in writing. It is often also printed on your latest income tax assessment or wage tax certificate. In urgent cases you can ask your Finanzamt in person with ID; without ID the number is sent only to your registered address.
Common questions
Is the Steuer-ID the same as my tax number?
No. The personal Steuer-ID is distinct from a tax number that may be issued for a tax return or business activity.
Can I choose how to receive it?
The BZSt sends the personal ID by post to the registered address. Follow the official BZSt instructions if you need it again.
Does my Steuer-ID change when I move?
No. It is a personal, long-term identifier. Register your new address with the local registration authority; do not request a new tax ID just because you moved. Contact the BZSt if official records do not match.
What should I do if the letter never arrives?
First check that your registration and mailing address are correct and that your name is on the mailbox. If it is still missing, use the official BZSt request route; the number is sent by post, not by email.
How long should I wait for my Steuer-ID letter?
Berlin’s service page says to contact the BZSt if no letter has arrived within three months of your first registration.
Official sources
Read this first
- Federal Central Tax Office: tax identification numberOfficial federal tax authority
- Berlin service portal: tax identification numberAllocation after registration, three-month rule and replacement notice
Rules can vary by nationality, work or study status, and city. Confirm your route with the official authority before you act.