Anonymously report information on cartel law infringements to the Bundeskartellamt Unfortunately this specification of service has not yet been completely translated.

You can anonymously submit information on possible infringements of cartel law to the Bundeskartellamt and receive feedback on them.

Via the whistleblower system (BKMS) you can provide the Bundeskartellamt with information, in particular

  • illegal agreements between competitors,
  • illegal agreements between suppliers and customers,
  • abuse of a dominant market position.

Your contact details will not be recorded, you will remain anonymous. Once you have submitted your tip, you can set up a protected personal mailbox. Via this letterbox you can also remain anonymous in contact with the Bundeskartellamt. This is usually very helpful for the processing of the case.

Via the mailbox

  • you will receive feedback from the Bundeskartellamt,
  • can answer any questions you may have and
  • you will be informed about the progress of your notification.


Forms: no
Online procedure possible: yes
Written form required: no
Personal appearance required: no



Related Links

  • § 54 Absatz 1 Gesetz gegen Wettbewerbsbeschränkungen (GWB)

Related Links

  • Hinweise, Informationsmaterialien und Beispiele auf der Internetseite des Bundeskartellamts

You can enter your report online on the website of the whistleblower system (BKMS):

  • Select the topic on which you want to provide information and then enter your information. This is done via a free text field as well as via certain questions with selection fields (Yes/ No/ No information). In addition, you can attach a file (Word, Excel, PDF, etc.) up to 2 megabytes (MB) in size to your report. Your contact details will only be recorded if you provide them voluntarily.
  • Once you have sent your notification, the Bundeskartellamt can retrieve and check the information you have filed in the BKMS.
  • You will receive a reference number as proof that your notification has been successfully filed in BKMS.
  • You also have the option of setting up a protected personal mailbox after submitting your notification. You can use this mailbox to communicate anonymously with the Bundeskartellamt. You choose your own user name and password. Via the mailbox you will receive feedback from the Bundeskartellamt, can answer any questions and will be informed about the progress of the case.

Responsible for the content
Federal Ministry of Economics and Climate Protection (BMWi)

Last update or date of publication