13-digit tax number
Simply determine your
13-digit ELSTER® tax number
To create the e-balance sheet, you need a 13-digit ELSTER® tax number. You can use our converter to quickly and easily calculate this number from your known tax number. Then you only have to enter your federal state and your 10, 11- or 12-digit tax number.
10-, 11- or 12-digit tax number:
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|Invalid tax number|
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|Your uniform tax number is:|
Failed to identify the matching check digit calculation method.
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All about the 13-digit tax number
The tax office assigns a tax number to every natural and legal person in Germany. With the introduction of the ELSTER procedure, which enables the submission of electronic tax returns, a standardized nationwide scheme was introduced – the 13-digit tax number. Here you can read exactly what it is, where you can find the number and how it is made up.
Tax ID or tax number?
There are two tax numbers in Germany:
- Tax ID
- Tax number
What is the tax ID?
The tax ID (tax identification number) was introduced primarily to facilitate the work of the authorities. This is because the tax ID is valid for life and it never changes. The Federal Central Tax Office issues the tax ID. Actually, it was supposed to replace the “old” tax number – but that has not happened yet. So it happens that every citizen still has two tax numbers.
What is the tax number?
The tax number is a 10 or 11 digit number and is assigned to you by your tax office. Unlike the tax ID, it can change over the course of your life – for example, if you move and a different tax office is now responsible for you. In addition, the tax number is state-specific. It is important for the following persons and entities:
- Tax offices: The tax number enables the tax office to clearly identify your tax return.
- Banks: If the tax office needs to obtain information about the maintenance of limits in the case of exemption orders, for example.
- Employers: With the tax number, the employer can deduct the wage tax.
- Self-employed: Those who are self-employed must indicate their tax number on their invoices.
Federal standard format: 13-digit tax number
The ELSTER procedure enables the electronic transmission of tax returns. With the introduction of the procedure, a uniform federal scheme for tax numbers had to be developed. As a result, the state-specific formats had to be converted into a new, uniform format. The uniform federal tax number format has a total of 13 digits. For example, if you want to apply for Corona aid, you will need this 13-digit number.
What is the composition of the 13-digit tax number?
The individual digits of the tax number each have a meaning. This applies to both the state-specific and the uniform federal tax numbers. For example, the specific tax number for Berlin is composed as follows: FF/BBB/UUUUP. The letters stand for:
- F = digit of the tax number office (BUFA-No.)
- B = digit from the district number
- U = digit from the personal distinction number
- P = check digit
Where can I find my 13-digit tax number?
You can find the state-specific tax number on all documents you receive from the tax office. This includes, for example, the tax assessment notice. Of course, it is also possible to ask for the tax number by phone at the tax office.
However, some federal states only distribute 10-, 11- or 12-digit tax numbers. You can convert these state-specific numbers into the new, 13-digit format yourself. To convert to the 13-digit ELSTER tax number, you can consult the table below.
Conversion of the state-specific tax number into the uniform 13-digit format
|State||State specific format||Federal standard format|