Bonus points can be gained, which increase your selection rank for entry to university courses.
Note this doesn’t increase your ATAR directly, but your selection rank which = ATAR + bonus points.
Bonus points are given for academic merit-achieving bands 6-4, disadvantage (visit the UAC-EAS page),sporting excellence, regional bonus points, community service and they vary between universities and courses.
As an example, you can receive 3 bonus points for achieving band 6 in a related subject, 2 for band 5 and 1 for band 4.
There is usually a maximum limit on academic bonus points of about 5-6. Bonus points for disadvantage are additional.
For more information about bonus points