There is a phishing email from MijnOverheid in circulation. It mentions the following:
There is a document in your Message box of Tax Collaboration Municipalities and Water Boards. Go to MyGovernment to view the message. You may need to take action on this message. So read it on time.
The links in this e-mail will take you to a site to enter your account number.
Do not do this! MyGovernment never sends e-mails with a link and will never ask for an account number.