Tip-offs or indications

Tip off

Please note that, while you may submit your tip-off or complaint to us in English, we can only give you advice in Dutch.


Tip Ons

Fields with an * are mandatory

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Supporting documents


Other individuals


Personal details


Submitting your tip-off anonymously

If you wish to submit your tip-off to ACM anonymously, the usefulness of your information will be reduced. For example, we would not be able to ask you additional questions in case of uncertainties. That is why we would be very grateful if you would reconsider entering your personal details. ACM will keep your personal details confidential.

Do you have valuable information for us, but you will be personally at risk the moment it becomes known that you have helped ACM obtain this information? Please contact our intelligence unit by phone. They are happy to tell you more about what we do to safeguard your anonymity.

More information about submitting tip-offs anonymously