If you are wondering how much a prenup costs in Australia, the short answer is: it varies, but it is rarely cheap. A binding financial agreement (the legal term for what most people call a prenup) involves a formal drafting process and a mandatory independent legal advice requirement for both parties. Those two factors alone shape most of the cost. Understanding where the money goes can help you budget properly and avoid the common mistake of trying to cut corners in a process where shortcuts can make the whole agreement unenforceable.
What is a prenup under Australian law?
In Australia, prenuptial agreements are governed by the Family Law Act 1975 and are formally known as binding financial agreements (BFAs). They can be made before a marriage or de facto relationship, during one, or after separation. The agreement sets out how property, assets, and financial resources will be divided if the relationship ends. For a BFA to be legally binding, both parties must receive independent legal advice from a separate solicitor before signing. This is not optional. If either party did not receive that advice, a court can set the agreement aside entirely.
Typical costs: what most people pay
The cost of a prenup in Australia generally falls somewhere between $2,000 and $10,000 per party, meaning the total combined cost can range from $4,000 to $20,000 or more. Simple agreements between couples with straightforward financial situations sit at the lower end. Complex arrangements involving business interests, significant property portfolios, trusts, or international assets push costs considerably higher.
Here is a rough breakdown of what typically contributes to the final bill:
- Initial consultation: Most family law solicitors charge between $300 and $600 for an initial consultation to discuss your circumstances and what the agreement needs to cover.
- Drafting fees: The lawyer who drafts the agreement will charge for their time. This can range from $1,500 to $5,000 depending on complexity.
- Independent legal advice for the other party: Your partner must engage their own solicitor. That solicitor's fees are separate and add to the overall cost of the process.
- Revisions and negotiations: If either party requests changes, each round of amendments adds to the total.
Why both parties need their own lawyer
The independent legal advice requirement exists to protect both people. A solicitor advising one party cannot advise the other. Each solicitor must sign a certificate confirming they explained the agreement's effect and whether it was to the disadvantage of their client. This safeguard is precisely why a prenup agreement attorney plays such a central legal role, not just a transactional one. Skipping this step, or trying to share a single lawyer to save money, will almost certainly result in an agreement that cannot be enforced.
What drives the cost higher?
Several factors can push the cost of a BFA well above the average range:
- Complex asset structures: Business ownership, family trusts, self-managed super funds, and overseas property all require careful drafting and sometimes specialist input from accountants or financial advisers.
- Disagreements between the parties: If negotiations become difficult, solicitors spend more time corresponding, and costs escalate accordingly.
- Urgent timelines: Requesting a rushed agreement before an imminent wedding can attract premium rates.
- Geographic location: Solicitors in major cities like Sydney and Melbourne often charge higher hourly rates than those in regional areas.
- Experience of the solicitor: Senior family law specialists charge more per hour but may also draft more robust agreements that are less likely to be challenged later.
Can you use a cheap or online template?
Some services advertise low-cost or template-based prenuptial agreements. In Australia, these carry serious risk. A BFA is not just a contract between two people. It is a document that overrides the otherwise applicable provisions of the Family Law Act. Courts scrutinise them carefully, and any procedural defect, including inadequate legal advice, missing certificates, or poorly drafted terms, can result in the agreement being set aside. Paying less upfront can mean paying far more in litigation costs later, at exactly the time when you can least afford it.
Is it worth the cost?
That depends on what you are protecting. For couples with significant assets on either side, business interests, or children from previous relationships, a properly drafted BFA offers real protection and genuine peace of mind. It removes uncertainty about what would happen financially if the relationship ended. For couples with minimal assets and straightforward finances, the cost may outweigh the practical benefit at this stage of their lives, though circumstances can change quickly after marriage.
It is also worth noting that the cost of not having an agreement can dwarf the cost of drafting one. Property settlement disputes, as covered in detail in our guide on how property settlement works after separation in Australia, can take years and cost tens of thousands of dollars in legal fees, emotional strain, and lost time. A BFA agreed upon in good faith at the start of a relationship is almost always cheaper than contested litigation at the end of one.
How to keep costs reasonable
A few practical steps can help manage the cost without compromising the quality of the agreement:
- Start the process early. Rushing always costs more.
- Have an honest, open conversation with your partner about your finances before you engage lawyers. The more aligned you are going in, the less time lawyers spend negotiating.
- Prepare a clear list of your assets, liabilities, and income so your solicitor can work efficiently.
- Ask your solicitor for a fee estimate upfront. Most reputable family law firms will provide a cost range at the initial consultation.
- Consider whether a simpler agreement covering the key concerns is sufficient, rather than trying to anticipate every conceivable scenario.
If you are unsure whether a binding financial agreement is right for your situation, speaking with a family law solicitor is the best starting point. You can also read more about binding financial agreements: what they are and how they work to get a fuller picture before your first appointment. The cost of getting proper advice now is almost always worth it.