Online portal of the Federal Central Tax Office; registration

If you want to submit applications and returns electronically via the online portal of the Federal Central Tax Office, you must register in advance to use it.



1. alternative: you have an ELSTER certificate file
2. alternative: to register with the BOP, you must apply in advance for an individual BZSt number and a secret value


Before registration:
Apply in advance for an individual BZSt number and the so-called secret value:

  • Visit the home page of the Federal Central Tax Office on the Internet:
  • Click on one of the following tabs as needed:
  • Private individual
  • Company
  • Select the appropriate department for your request and click there on the sub-item "electronic data transmission".
  • Fill out the form linked there with the necessary information and explanations and click on "Submit".
  • If your information is complete, you will receive a letter with your personal BZSt number and an e-mail with the secret value in the following days.

Registration process Certificate file:
If you have decided to use the login version by means of a certificate file on the BOP, you can register as follows:

  • Visit the BOP website and click on "Create user account" on the home page.
  • You will automatically be taken to the "Account Creation - How to" subpage, where you will see an overview of the registration process and will be guided through the rest of the process.
  • On the following page, select your favorite login option. For most users, the recommended selection option "Certificate file" is the best choice.
  • Enter your personal data and the BZSt number you applied for in advance in the following online form.
  • Under the "Shared secret" heading, select "BZSt secret" from the drop-down list, enter your personal secret and confirm it.
  • Assign a user name and answer a security question of your own choice.
  • Finally, check the data you have entered and submit it if it is correct.
  • After sending the data, you will receive a 1st e-mail for verification of your e-mail box, the receipt of which you must confirm.
  • After successful confirmation you will receive a 2nd e-mail for verification with an activation ID as well as an activation code by mail.
  • After receiving this 2nd e-mail and the letter, click on the link from the 2nd e-mail or go to "My user account" on the start page of the "BOP" and further to "Activate user account".
  • Then click on the item "Certificate file" under the heading "Registration".
  • Enter the personal activation ID from the e-mail and the activation code from the letter and click "Submit".
  • In the next step, assign a personal password for the use of your personal certificate file. You will use this PIN to log in to the BOP in the future. If you lose the PIN, you will have to register again.
  • Finally, you will receive a certificate file with the extension ".pfx" to download and save on your computer.
  • With this, you have successfully created a BOP user account, which you can now use to transfer your applications and notifications to the BZSt without a signature and electronically.
  • To complete the registration process, log in to the portal for the first time using your login details and the certificate file and complete your profile.


You must complete the registration process within 100 days.

Processing time

As a rule, registration takes 10 working days.

Required documents

  • Required Documents

    As a rule, no additional documents are required.

Online procedures

  • BOP-Portal - Registrierung

    The online portal of the Federal Central Tax Office (BOP portal) allows you to transmit data electronically to the Federal Central Tax Office. Private individuals or (tax consulting) companies must register on the portal once and free of charge.


  • There are no costs for you.


You will not be able to appeal.


Responsible for editing:Bundesministerium der Finanzen

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  • Online transactions, Bavaria-wide
  • Online transactions, locally limited
  • Form, Bavaria-wide
  • Form, locally limited
  • Prefillable Form, Bavaria-wide
  • Legal bases, Bavaria-wide
  • Legal bases, locally limited
  • Fees, Bavaria-wide
  • Fees, locally limited

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