The tax identification number is used to identify taxpayers in the taxation process. It ensures that tax returns, notifications, and correspondence can always be clearly assigned to the respective taxpayer.
The tax identification number is a "non-descriptive number." This means that it does not reveal any personal data or the responsible tax office.
Every newborn child and all new citizens are automatically assigned a tax identification number when they first register in Germany. It remains valid for life and does not change when you move or get married.
You can usually find your tax identification number
- on your income tax assessment or
- on your wage tax statement.
You can request your tax identification number using the input form of the Federal Central Tax Office (BZSt) if
- you register your newborn child within 3 months of their birth
- you have not yet received a letter with your tax identification number for your newborn child within 3 months of the birth
you have not yet received a letter with your tax identification number.
For data protection reasons, it is not possible to provide this information by telephone or email.
