Antitrust violations; transmission of submissions or complaints.

If you have indications of possible violations of antitrust law, you can submit them to the Federal Cartel Office as a submission or complaint.



  • none


For your submission or complaint, contact the Bundeskartellamt in writing or by telephone.

  • Send the Bundeskartellamt your comments on possible infringements of antitrust law. You have the following options:
    • Online form,
    • letter (by post),
    • telephone or
    • E-mail
  • Your submission or complaint will be forwarded to the responsible office at the Bundeskartellamt.
  • The Federal Cartel Office will examine your submission or complaint and contact you if it has any queries.
  • The Federal Cartel Office will then initiate an investigation under antitrust law on its own initiative.

Important note:
If you have insider information or strictly confidential documents which could be used to uncover

  • cartels or
  • abuses of power

you can use the Bundeskartellamt's anonymous whistleblower system (BKMS) for this purpose.


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Processing time

  • Feedback on input or complaint: usually within 2 to 8 weeks

Required documents

  • Required Documents

    • none

Online procedures


    • none


Responsible for editing:Bundesministerium für Wirtschaft und Klimaschutz

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