Contact
Filing a report
Do you believe a business is not complying with the rules? File a report with us.
- I am a business owner, and wish to file a report
- I am a consumer, and wish to file a report (in Dutch)
All reports can help us stop violations.
Asking a question
Ask a question as a consumer
Ask your question online (in Dutch) or call +31-88-0707-070
(Monday through Friday from 9:30 a.m. until 1 p.m.)
Question or tip-off on behalf of a business
Call +31-70-7222-000 (option 2 or 3)
(Monday through Friday from 9:30 a.m. until 1 p.m.)
Other contact options
E-mail: acm-post [at] acm [punt] nl (acm-post[at]acm[dot]nl)
Postal address: P.O. Box 16326, 2500 BH, The Hague, the Netherlands
Courier address:
Zwarteweg 30, 2511 VS, The Hague, the Netherlands
Address for visitors:
Muzenstraat 41, 2511 WB, The Hague, the Netherlands
Please remember to bring your ID when visiting ACM.
Reception: call +31-70-7222-000 (option 9)
(Monday through Friday from 9 a.m. until 5 p.m.)
Intelligence unit
Would you anticipate any personal risks if it became known that you had filed a report about a business? If so, file a report anonymously with our Intelligence unit.
Leniency office
Have you concluded illegal agreements with competitors, and do you wish to stop participating in them? If you notify us of your participation in a cartel, you may get a lower fine or escape a fine altogether. This is called a leniency application.
Legal advice
We offer general information about the laws and rules that you must comply with. If you seek legal advice, we will refer you to others.
Complaints about ACM
Our representatives and officers perform their duties with great care. If you feel you have not been treated properly, you have the opportunity to file a complaint.
Abuses by ACM
Are you a supplier or an ACM employee (current or former)? And do you believe ACM does not comply with the rules? File a report anonymously.
Press office
Are you a reporter, and do you have a question? Please contact one of our press officers.
Request for information (WOO request)
We publish decisions and rules on our website. Would you like to know about something that has not or not yet been published? If so, you can file a request for information.
Request for enforcement
With a request for enforcement, you ask ACM to take action against a violation. Requests for enforcement must meet certain requirements.