If you're an international student, then you have the option to pay your fees in two instalments. If you choose this option you must pay at least 50% of your total fee amount by the specified date..
If you don't pay at least 50% by this date, then you'll no longer be able to pay by instalments. All remaining fees for the study period will be overdue and you will need to pay them immediately. You'll receive an email shortly after the payment due date, listing the final date to pay to avoid cancellation of your enrolment.
Find out the dues dates for your minimum 50% payment and the remaining balance of your fees, and further conditions on the Invoice due date webpage.
Domestic students are unable to pay by instalments and must either pay or defer their fees by their domestic invoice due date.