Whether you can stay in Australia after completing your diploma will depend on the number of conditions such as your status of visa, what are your future plans, and the diploma program you have finished or not?
The Temporary Graduate visa (subclass 485) may allow you to stay in Australia for a fixed period of time after completing your diploma program. You can stay in Australia and work full-time for a period of up to 18 months through this student visa. This will help you to gain practical work experience in your field of study.
However, to be eligible for this student visa, you have to fulfill certain requirements such as having an eligible qualification, satisfying English language requirements, and applying within a certain duration after completing your studies.
