When couples plan a future together, discussions about finances and property are often overshadowed by the excitement of building a life.
However, a prenuptial agreement, or prenup, can be the missing puzzle piece that helps to protect both parties’ financial interests.
A prenup is a legally binding contract created under the Family Law Act 1975 (specifically section 90B) to establish how financial assets, liabilities, and property will be divided in the event of a separation.
Any legal adult aged 18 or over can enter into a prenuptial agreement, whether they are planning a marriage or a de facto relationship.
These agreements are available to both heterosexual and same-sex couples.
In Australia, prenuptial agreements, also known as Binding Financial Agreements (BFAs), offer a clear framework to manage financial matters in a marriage or de facto relationship.
These agreements help safeguard valuable assets, provide clarity on spousal maintenance, and can reduce the likelihood of disputes if the relationship breaks down.
Whether you’re entering a marriage or de facto relationship, engaging a prenup lawyer in Sydney, Melbourne, or Brisbane, ensures the agreement complies with all legal requirements, such as obtaining independent legal advice and making a complete financial disclosure.
With the right guidance, couples can use prenups to protect their financial future and create a foundation of trust and transparency.
Keep reading to learn more about how prenuptial agreements can help protect your interests and get your relationship started on the right foot.
Why Consider a Prenup?
A prenuptial agreement can provide peace of mind and financial security for both partners entering a marriage or de facto relationship.
While no one likes to imagine the possibility of a relationship breakdown, planning for the unexpected can prevent significant stress and uncertainty in the future.
Read here for prenuptial agreements for de facto relationships
Here are some key reasons to consider a prenup :
1. Protecting Financial Assets :
Prenups are particularly valuable for individuals with significant assets, such as real estate, business interests, or property acquired before the relationship.
They ensure these assets remain protected, regardless of the outcome of the relationship.
2. Clarifying Financial Expectations :
A prenup outlines each partner’s financial rights and responsibilities, providing clarity on issues like spousal maintenance, debt allocation, and financial matters during the relationship.
This can help avoid misunderstandings and conflicts later on.
3. Safeguarding Family Interests
For those with children from previous relationships or family members reliant on certain assets, a prenup can preserve inheritances, trusts, or separate property.
4. Reducing Legal Disputes
Without a prenup, the family court may determine property division based on factors like financial contributions and the length of the relationship.
A prenup minimises court involvement by pre-determining the distribution of assets.
5. Planning for Financial Security
By addressing potential scenarios in advance, a prenup allows couples to focus on their relationship with the reassurance that their financial future is secure.
A well-structured prenup, created with professional legal advice, provides not only asset protection but also a roadmap for navigating financial complexities during the relationship and beyond.
If you’re wondering what a woman should ask for in a prenup, find out here.
How Does a Prenup Work?
A prenuptial agreement, or Binding Financial Agreement (BFA), works as a legally enforceable document that defines how financial assets, liabilities, and property will be handled during the relationship and in the event of a separation.
Its purpose is to provide clarity and protect the interests of both parties, avoiding potential disputes if the relationship ends.
What Can a Prenup Cover?
A prenuptial agreement can address a wide range of financial matters, covering assets and liabilities that each party brings into the relationship as well as those acquired during it.
Common items addressed in a prenup include money and savings, real estate and property, business interests, inheritances, investments, and superannuation.
The agreement can also set out arrangements for spousal maintenance, outline who is responsible for specific debts and liabilities, and include provisions for the entitlements of both current and future children.
The Prenup Process in Australia
Here’s how the prenup process typically works :
1. Open Communication :
Both parties need to discuss their financial circumstances, goals, and expectations openly.
This is an essential step in creating an agreement that reflects their shared understanding.
2. Complete Financial Disclosure
Both individuals must provide full transparency about their financial assets, income, liabilities, and other relevant details.
A lack of financial disclosure can render the agreement invalid, as transparency is a cornerstone of any successful prenup.
3. Drafting the Agreement
The agreement is drafted to outline how assets, debts, and property will be divided in the event of a separation.
It can also include provisions for spousal support, asset protection, or specific instructions related to businesses owned.
4. Obtaining Independent Legal Advice
To ensure the agreement is legally binding, both parties must receive independent legal advice from separate lawyers.
This step is crucial for understanding individual rights, avoiding undue influence, and ensuring both parties enter the agreement voluntarily.
Without this step, the agreement will not be legally binding.
5. Signing and Finalising the Agreement
Once reviewed and agreed upon, the prenup is signed and witnessed to meet all legal requirements under the Family Law Act.
At this stage, the agreement becomes a legally binding contract.
A well-executed prenup is an effective tool for safeguarding financial interests and providing certainty for the future.
However, working with an experienced family lawyer is essential to ensure the agreement’s validity and compliance with Australian family law.
Pros and Cons of Prenuptial Agreements
A prenuptial agreement can offer significant benefits, but it’s important to weigh these against potential drawbacks.
Here’s a closer look at the pros and cons of such agreements :
Pros of Prenuptial Agreements
1. Asset Protection :
Prenups can help to safeguard valuable assets, ensuring they remain with their original owner if the relationship breaks down.
This is especially important for individuals with business interests or property acquired before the relationship.
2. Clear Financial Boundaries
They establish a clear division of financial assets and responsibilities, reducing the potential for disputes over property and financial matters.
3. Reduced Legal Disputes
A prenup minimises court involvement by providing a pre-determined plan for asset division and spousal maintenance.
4. Family Security
For those with children from previous marriages, prenups can preserve inheritance rights and other financial protections.
5. Certainty in Financial Planning
Couples can plan their financial future with confidence, knowing their financial interests are well-defined.
6. Privacy
A prenuptial agreement is a private arrangement between the parties and their lawyers.
If a relationship ends without a prenup in place, property and financial disputes may need to be resolved through court proceedings, which can reduce the level of privacy available to both parties.
A prenup helps couples avoid that exposure.
Cons of Prenuptial Agreements
1. Perceived Lack of Trust
Suggesting a prenup may feel unromantic or imply a lack of trust, which can create tension in the relationship.
2. Potential for Invalidity
A prenup can be set aside if it fails to meet legal requirements, such as lack of independent legal advice, non-disclosure of assets, or evidence of undue influence.
3. Limited Flexibility
Life circumstances change, and prenups may not fully account for events like future children, changes in income, or new financial circumstances. Prenups can be updated to accommodate these changes.
4. Emotional Impact
Discussing and negotiating a prenup can be emotionally taxing, as it involves planning for the event of a separation.
5. Power Imbalances
If one party is in a significantly stronger financial position than the other, there is a risk that the prenup could be used to exert financial control.
While safeguards such as independent legal advice exist to protect both parties, it’s important for each person to feel genuinely comfortable with the terms before signing.
6. Associated Costs
While a prenup can save money in the long term, the associated costs of drafting and legal advice can be significant upfront.
Despite a few cons, a binding financial agreement can be a valuable tool for couples seeking clarity and security in their financial arrangements.
Consulting with a family lawyer can help determine whether a prenup suits your unique needs and ensure it is legally sound.


Do-it-yourself prenuptial agreements: pros and cons
Creating a prenuptial agreement without professional help might seem like a cost-effective option, but there are significant risks involved.
Here’s a breakdown of the pros and cons of a DIY prenup :
Pros of a DIY Prenup :
1. Cost Savings :
By avoiding legal fees, a DIY prenup can be less expensive than hiring a prenup lawyer.
2. Personal Control
Couples can work together to draft the terms, tailoring the agreement to suit their preferences and financial goals.
3. Speed and Convenience
With templates readily available online, drafting a DIY prenup can be quick and straightforward.
Cons of a DIY Prenup :
1. Risk of Invalidity
A DIY prenup is unlikely to meet the strict legal requirements outlined in the Family Law Act.
For example, failing to obtain independent legal advice can render the agreement unenforceable.
2. Lack of Legal Expertise
Without input from an experienced family lawyer, critical legal issues may be overlooked, such as provisions for spousal maintenance or addressing changes in financial circumstances.
3. Potential for Court Challenges
If the agreement is found to involve non-disclosure, undue influence, or fails to meet procedural requirements, it may be set aside by the family court.
4. Incomplete Financial Disclosure
DIY prenups often miss the crucial step of complete financial disclosure, which is essential for ensuring fairness and enforceability.
5. Long-term Costs
While cheaper initially, a poorly drafted prenup can lead to expensive legal disputes down the track.
While DIY prenups might work for couples with minimal assets or simple financial arrangements, they are rarely a substitute for a legally binding contract crafted with professional legal advice.
For peace of mind and compliance with Australian family law, consulting a family lawyer, like ours here at Unified Lawyers, is highly recommended.
Are prenuptial agreements always enforceable?
While prenuptial agreements (or Binding Financial Agreements) are designed to be legally binding, they are not always enforceable.
Many people wonder, “can a Binding Financial Agreement be overturned?” The answer is yes, under specific circumstances.
The Family Court has the authority to set aside such agreements if they fail to meet legal requirements under the Family Law Act 1975 or are found to be unjust or improperly executed.
What Makes a Prenup Legally Binding?
Before understanding how a prenup can be overturned, it’s important to know what makes one valid in the first place.
Under section 90B of the Family Law Act 1975, a prenuptial agreement must meet several criteria to be considered legally binding.
The agreement must be in writing and signed by both parties.
Each party must be a legal adult.
Both parties must have received independent legal advice, with each party’s lawyer explaining the advantages and disadvantages of the proposed agreement.
Each lawyer must also sign a statement confirming that this advice was provided.
If any of these criteria are not met, the agreement will not be enforceable.
Situations Where a Prenup May Be Overturned
1. Lack of Independent Legal Advice
Both parties must receive independent legal advice before signing a prenup.
Failure to do so can render the agreement invalid.
Each party’s lawyer must confirm in writing that advice was provided.
2. Incomplete Financial Disclosure
A prenup requires complete financial disclosure from both parties.
If one party hides assets or misrepresents their financial circumstances, the agreement can be challenged in court.
3. Evidence of Duress or Undue Influence
A prenup must be entered voluntarily.
If one party can demonstrate they were pressured or coerced into signing, the agreement may be declared void due to undue influence.
A well-known example of this is the Thorne v Kennedy case, in which a husband pressured his wife to sign a prenuptial agreement just days before their wedding.
The court ultimately found the agreement to be voidable because the husband’s conduct was unconscionable — he had brought his wife to Australia on the promise of marriage but then refused to proceed with the wedding unless she signed.
You can learn more about the Thorne v Kennedy case here.
4. Unconscionable Conduct
Courts may set aside a prenup if it is deemed grossly unfair to one party, especially if they were disadvantaged during the drafting process.
This includes situations where one party lacked proper understanding of their legal rights.
5. Material Changes in Circumstances
If unforeseen events occur that the agreement did not account for, the court may find the prenup is no longer fair or relevant.
One of the most common examples of a material change is the birth of children.
If a couple has children and the prenup makes no provisions for them, there is a strong likelihood the agreement could be set aside.
Other material changes can include significant shifts in employment, health, or income.
6. The Agreement Is No Longer Just and Equitable
It’s important to understand that a prenup’s fairness is assessed not only at the time it was signed, but also at the time it is enforced.
Provisions that seemed reasonable when the agreement was created may no longer be considered just and equitable years later, particularly if circumstances such as children, career changes, or health issues have significantly altered one party’s position.
To maximise the likelihood that a prenup will be upheld :
- Work with an experienced family lawyer to draft the agreement.
- Ensure both parties obtain and receive independent legal advice.
- Include provisions that account for future changes, where possible.
Understanding these limitations highlights the importance of creating a thorough and legally sound agreement.
While prenuptial agreements are powerful tools, they are not immune to scrutiny, and consulting a prenup lawyer is essential to navigate this complex legal terrain.

When are prenuptial agreements a good idea?
Prenuptial agreements are valuable in situations where clarity and protection are crucial.
They’re especially beneficial for those with valuable assets, such as businesses or property, or for individuals with children from a previous relationship who want to secure inheritances.
Prenups also help address financial disparities between partners and provide a clear plan for handling debts and assets.
They can also be particularly relevant where one party expects to receive an inheritance or financial assistance from a family member during the relationship, or where there is a significant difference in liabilities between partners.
If you’re considering whether a prenup is right for you, Unified Lawyers can guide you through the process.
Our experienced family law team will ensure your agreement is tailored to your needs and complies with Australian law, giving you confidence and peace of mind.
How to Raise a Prenup With Your Partner
If a prenuptial agreement has crossed your mind, it’s worth raising the topic with your partner so you can discuss it together and do your research as a team.
However, bringing up the conversation can be easier said than done, it often touches on sensitive feelings around trust and commitment.
One helpful way to think about a prenuptial agreement is to treat it like insurance. Nobody buys car insurance expecting to have an accident, but they have it in place to protect themselves if the worst does happen.
A prenup works the same way, the terms only come into effect if the relationship ends, and having one doesn’t mean you expect it to.
Timing can also make a difference.
If you’re already planning a wedding, discussing wills, or talking about having children together, these conversations create a natural opening to raise the idea of a prenup.
Approaching it as a suggestion rather than a demand tends to lead to a more productive and respectful discussion, and allows both of you to explore the idea together before making any decisions.
What happens if you don’t sign a prenup?
Without a prenuptial agreement, Australian family law determines how assets, debts, and property are divided in the event of a separation.
This process considers factors like financial and non-financial contributions, the length of the relationship, and future needs, which can lead to unpredictable outcomes.
For couples with significant assets or complex financial arrangements, not having a prenup could result in lengthy and costly disputes in the family court.
A lack of clarity might also create stress and uncertainty about each partner’s rights and obligations.
If protecting your financial interests and avoiding potential disputes is important to you, seeking advice from one of our trusted family lawyers here at Unified Lawyers, is a smart move.
We can help you explore your options and ensure your financial future is secure.

How much does a prenup cost in Australia
The cost of drafting a prenuptial agreement in Australia can vary depending on the complexity of the agreement and the assets involved.
Factors such as the need for complete financial disclosure, the involvement of multiple parties (like business partners or trustees), and negotiations between the couple can influence the price.
As a general guide, the cost of a prenuptial agreement in Australia typically falls somewhere between $6,000 and $12,000, though this will depend on the complexity of your individual circumstances.
Typically, costs include :
- Legal fees for drafting the agreement and ensuring it meets legal requirements.
- Fees for both parties to obtain independent legal advice, which is mandatory under Australian family law.
While there are upfront costs, a well-drafted prenup can save significant time, money, and stress by avoiding disputes in the future.
Unified Lawyers provides clear guidance and expert legal support, ensuring your agreement is thorough, enforceable, and tailored to your needs.
How to get a prenup in Australia
Getting a prenuptial agreement in Australia involves several steps to ensure it meets all legal requirements under the Family Law Act 1975.
Here’s how it works :
1. Discuss Financial Goals
Both parties should have an open discussion about their financial circumstances, goals, and expectations for the agreement.
2. Complete Financial Disclosure
Transparency is key. Both parties must provide a full account of their financial assets, liabilities, and income.
3. Draft the Agreement
The agreement is drafted to address property division, debts, and spousal support in the event of a separation.
4. Obtain Independent Legal Advice
Both parties must consult separate lawyers to ensure the agreement is fair and understood.
This step is essential to make the prenup enforceable.
We can guide you through this process, ensuring your prenup is legally sound and tailored to your unique situation and needs.
Our experienced family law team takes the stress out of drafting and finalising your agreement, giving you peace of mind about your financial future.
Why you will need a lawyer
A prenuptial agreement is a complex legal document that must meet strict criteria under the Family Law Act 1975 to be enforceable.
While it may be tempting to handle the process independently, engaging a lawyer is essential for several reasons :
1. Legal Expertise
A lawyer ensures the agreement complies with Australian family law and includes provisions that protect your financial interests while addressing both parties’ needs.
2. Independent Legal Advice
Both parties must receive independent legal advice to confirm they understand the terms and their rights.
Without this, the agreement could be set aside by the court.
3. Avoiding Common Pitfalls
Lawyers help prevent issues like non-disclosure of assets, undue influence, or terms that fail to reflect changing circumstances, all of which could jeopardise the agreement’s validity.
At Unified Lawyers, our family law experts work closely with clients to draft prenups that stand up to legal scrutiny.
By ensuring every step of the process is handled professionally, we help protect your rights, minimise risks, and give you confidence in your agreement.
How Unified Lawyers can help
From navigating the prenup process to ensuring your agreement is legally enforceable, Unified Lawyers is here to guide you every step of the way.
Our experienced family law team specialises in crafting Binding Financial Agreements that protect your financial interests while addressing your unique circumstances.
We take the time to understand your needs and provide clear, compassionate advice, ensuring every detail is handled with care.
Whether you’re safeguarding valuable assets, planning for future children, or clarifying financial responsibilities, we’ll ensure your agreement meets all legal requirements under Australian family law.
By partnering with us, you can move forward with confidence and peace of mind.
Let us help you take the stress out of creating your prenup. Contact expert family lawyers in Brisbane, Sydney, or Melbourne today to book a free consultation and start the process of securing your financial future.
