Overview: What Is a Prenuptial Agreement in Australia?
A prenuptial agreement (or prenup) is a written agreement between two people about how their property, financial resources and spousal maintenance will be dealt with if their relationship breaks down. In Australia, a prenup is a type of binding financial agreement (BFA) made under the Family Law Act 1975 (Cth).
When a binding financial agreement covers a matter, the court's usual power to divide property and order maintenance does not apply to that matter (ss 71A and 90SA). Instead of a judge deciding what is fair, the agreement you both signed decides it.
Book a consultation to discuss whether a prenuptial agreement is right for your situation.
Prenup, BFA or Financial Agreement: One Document, Several Names
You will see several names for the same thing:
- Prenuptial agreement or prenup: the everyday name for an agreement made before marriage.
- Binding financial agreement or BFA: the common legal name. The Act itself calls it a "financial agreement".
- Postnuptial agreement: an agreement made during a marriage.
- Cohabitation agreement: the everyday name for an agreement made before a couple moves in together.
The section of the Act under which an agreement is made determines the applicable rules.
What a Prenup Can and Cannot Cover
A prenup can deal with:
- Property each of you owns now, such as a home, investments or a business
- Property either of you acquires later in the relationship, including a future inheritance (s 90B(2)(a))
- Superannuation, which the agreement can treat in the same way as property (s 90XH)
- Interests in family trusts and companies
- Spousal maintenance during the relationship or after it ends
A maintenance clause must name the person it provides for and state the amount or value. Otherwise it is void (s 90E; s 90UH). A court can also still order maintenance if, when the agreement took effect, one of you could not support yourself without an income-tested pension or allowance (s 90F; s 90UI).
A prenup is not the place to settle where your future children will live. If a court is ever asked to make parenting orders, your child's best interests are the paramount consideration (s 60CA). Child support is dealt with under its own rules. You can read more on our child support page.
Book a consultation to discuss what your agreement should cover.











