As a driver you start with zero demerit points, but if you commit an offence that has a demerit point penalty, then they are added to your driving record.
If you reach or exceed the maximum demerit points allowable for your licence within a 3-year period, you could have your licence suspended, or it might not be renewed.
The demerit point check will display any active demerit points you've accrued within the last 3 years and 4 months. This is to allow time for any unpaid penalties, or penalties delayed due to appeal proceedings, to be added to your driving record. To learn more about accumulating points and how demerit points age over time, visit Demerit points.
You can check your demerit point balance online using your MyServiceNSW Account.