Extend Australia Travel Visa. You can to stay in australia during the processing of your extension. You cannot apply for a new visa in australia if your visa has a condition that prevents further stay.
Travel while your visa is being processed. You should apply for a visa extension at least 2 weeks before your tourist visa finishes. If you are able to apply you should do so at least two weeks before your current visa expires.
Travel on a bridging visa.
If you have remained in australia after the expiration of your visa it s very unlikely that you will be granted a bridging visa or that your expired visa will be extended. Let us discover how you can go around staying in australia for a longer period of time. You should apply for a visa extension at least 2 weeks before your tourist visa finishes. If you are able to apply you should do so at least two weeks before your current visa expires.