Short answer
Subclass 300 is a temporary visa for a person outside Australia who intends to come to Australia, marry their sponsor, and then apply for a Partner visa in Australia.
The subclass 300 visa is for prospective spouses. It is designed for a couple who intend to marry after the visa is granted.
It is not the same as a Partner visa already based on an existing spouse or de facto relationship. The applicant needs to satisfy the subclass 300 criteria, including the intention to marry and sponsorship requirements.
Last checked 14 August 2026.