If a marriage agreement is appropriate and desirable, the people involved will negotiate the terms of the agreement and one or both of the parties will draft a written agreement. As with all family law agreements, it is important that both parties make complete financial disclosure and get independent legal advice about what exactly the agreement means, how it affects their present rights and responsibilities towards one another, and how it will impact on those rights and responsibilities if the marriage comes to an end. Getting independent legal advice makes the agreement harder to change later on by preventing one spouse from saying "I didn't know what it meant" or "she had the lawyer, not me."

<blockquote><tt>(3) On application by a spouse, the Supreme Court may set aside or replace with an order made under this Part all or part of an agreement ... only if satisfied that one or more of the following circumstances existed when the parties entered into the agreement:</tt></blockquote>