From jbsolicitors.com.au: Australian Family Law defines marriage as a voluntary, lifelong union between two people, regardless of gender.

It outlines legal requirements such as age, consent, and the necessity of an authorized celebrant, while also addressing the recognition of same-sex marriages and the voiding of unlawful unions.

The legal effects of marriage is as important as the definition of marriage. Marriage in Australia has a number of legal consequences for the parties involved.