From justicefamilylawyers.com.au: A postnuptial agreement in Australia is a legal contract made between a married couple after marriage, detailing the division of assets and debts in the event of separation, divorce, or death.

For the agreement to be legally binding, both parties must sign it, receive independent legal advice, and meet specific requirements under the Family Law Act.

Common reasons for creating a postnuptial agreement include changes in financial status, protection of children’s interests from previous relationships, and addressing significant debts.