If you do nothing after you receive a reminder notice for the infringement offence, the police, local council or other authority can lodge the infringement notice or reminder notice with the District Court, so that it can be enforced. A lodgement fee of $30.67 is automatically added to the amount of the unpaid fee and the whole amount will then be treated in the same way as if you’d been fined by a judge in court (see: “Category 1 driving offences: Fines or community-based sentences only”).
The District Court will give you another four weeks (28 days) to pay the infringement fee and court costs. If you do nothing, they’ll also add another enforcement fee of $102.22.
Note: As well as driving-related issues, infringement notices can also be given out by various government agencies or local councils for offences in other areas of life, like littering or breaching dog bylaws. If you don’t pay the infringement notice by its due date, it is lodged with the courts and dealt with in the same way as if it had been, for example, a parking ticket.