As the visitor visa is a temporary visa, you can only stay for the duration listed on your visa grant letter.
The length of your visa is finalized on a case-by-case basis. The following factors are taken into account when deciding your stay period:
Also, it is possible that the authorities will not grant you the entire length of stay that you apply for.
This visa may be issued with one or multiple entries. If you get a multiple-entry visa, you can leave and return to Australia while the visa is valid. Usually, you can get a stay of three, six, or twelve months under this visa, depending on your circumstances.
It is a criterion of this visa that you do not spend more than twelve months in Australia over the course of an eighteen-month duration. If you already have a Visitor visa, a Working Holiday visa, a Work and Holiday visa, or a bridging visa, and granting this visa would require you to remain in Australia for more than twelve months, you must demonstrate exceptional circumstances.