Prenups and Binding Financial Agreements
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If you are thinking about protecting your assets, income, and future financial security, you have probably come across the terms prenup and Binding Financial Agreement. In Australia, these agreements give you the ability to decide how your property and finances will be divided if your relationship ends. For many couples, it is a practical and respectful way to avoid conflict, protect existing assets, and create clarity about what happens in the future.
This guide explains everything you need to know, with references to real case law, examples, and scenarios that help you understand how these agreements work and how they apply to your situation. The information is relevant across Australia and aligns with Queensland and Brisbane practice, where interpretation varies between states.
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Are Prenups and BFAs Legally Binding?
Yes, but they must meet strict rules to be enforceable. The Family Court and Federal Circuit and Family Court of Australia will examine these agreements very closely.
For your agreement to be binding:
- It must be signed by both parties
- Both parties must receive independent legal advice
- Your lawyers must sign a certificate confirming advice was given
- The agreement must comply with all sections of the Family Law Act
- The agreement must not be obtained through fraud, pressure, or unfair conduct
Courts in Brisbane see many BFAs challenged each year. The most common reason for failure is inadequate legal advice or one party feeling pressured to sign.
Case Law Example: Thorne v Kennedy
The High Court’s decision in Thorne v Kennedy (2017) is the most important case on prenups in Australia. It involved:
- A wealthy Australian man
- A woman with very few assets
- A prenup signed shortly before the wedding
- Undue influence
The court set aside the prenup on the basis of:
- Undue influence
- Unconscionable conduct
- Power imbalance
- Lack of real choice
This case shaped how Brisbane and Australian family lawyers draft BFAs today. You must have genuine bargaining power, adequate time to consider the agreement, and proper legal advice.
What You Can Learn from This Case
If you are preparing a prenup:
- Do not leave it until the last minute
- Make sure you understand everything you are signing
- Ask questions and clarify anything that worries you
- Choose your own independent lawyer
- Do not sign under pressure
These steps protect you from the agreement being overturned later.
Other Examples of BFAs Being Set Aside
Courts may set aside BFAs in situations such as:
- One party failing to disclose assets
- A partner giving misleading information
- The agreement being extremely one-sided
- Significant changes in circumstances, such as a child developing a disability
- Family violence affects a party’s ability to negotiate freely
For example, in a Queensland case involving a long-term de facto couple, the court set aside the BFA because one partner failed to disclose overseas investments. The judge ruled that the lack of honesty undermined the validity of the agreement.
Steps to Create a Prenup or BFA
1. Initial Discussion With Your Partner
Talk openly about your financial goals, concerns, and expectations. This helps prevent misunderstandings later.
2. Prepare a Draft Agreement
Your lawyer prepares a draft that includes: All assets and liabilities, Superannuation, Businesses & trusts, and Future financial considerations
3. Full and Honest Disclosure
You must list everything you own and owe. If you hide something, the agreement can be overturned.
4. Independent Legal Advice
Each person must see their own lawyer. This ensures fairness.
5. Signing the Agreement
Both parties sign after receiving legal advice and having enough time to think it through.
6. Store the Agreement Safely
You do not file BFAs in court, but keep them with your lawyer and in secure records.
What Can You Include in a Prenup or BFA?
You can tailor the agreement to your situation. Typical inclusions are:
1. Property Division
This covers:
- Real estate
- Cars and vehicles
- Superannuation
- Cash savings
- Shares and cryptocurrency
- Investments
- Personal valuables
You can specify how these assets will be divided if you separate.
2. Debts and Liabilities
Your agreement can set out:
- Who pays the mortgage
- How you split credit card debt
- Responsibility for ATO debts
- Personal loans or business debts
This avoids fights in the future about who is responsible.
3. Spousal Maintenance
You can agree whether one party will receive financial support if separation occurs.
4. Businesses and Companies
If you own a business in Brisbane or elsewhere, a BFA can protect:
- Your ownership shares
- Future growth
- Intellectual property
- Family trusts
- Cash flow distribution
Business owners often use BFAs as part of their asset protection strategy.
5. Inheritances
You can protect expected gifts or inheritances from your family.
6. Future Assets
You are allowed to include assets you may acquire later.
Understanding Prenups and Binding Financial Agreements in Australia
What Is a Prenup in Australia?
A prenup in Australia is more commonly known as a Binding Financial Agreement (BFA). It is a legally recognised contract that you and your partner can enter before marriage or before starting a de facto relationship. It sets out how your property, assets, liabilities, and financial resources will be divided if you separate later.
Unlike the United States, prenups in Australia are regulated by the Family Law Act 1975. This means they must meet strict legal requirements, or else they may be declared invalid.
Why You Might Consider a Prenup
You may want a prenup if:
- You own significant assets before entering a relationship
- You are expecting an inheritance
- You run a business
- You have children from a previous relationship
- You want clarity and financial certainty
- You want to avoid future disputes and court action
- A prenup can give you peace of mind and protect the things you have worked hard to build.
What Is a Binding Financial Agreement?
A Binding Financial Agreement is a broader legal term covering financial agreements made:
- Before marriage
- During marriage
- After divorce
- Before, during, or after a de facto relationship
- This makes BFAs a flexible tool. You might create one at the start of your relationship, or later on, once you have accumulated joint assets. There is no requirement that you must be planning a wedding or living together for any set period before making a BFA.
How a BFA Works
A BFA outlines:
- How property and assets will be divided
- Who keeps the home
- What happens to bank accounts, shares, and investments
- How debts will be handled
- Whether spousal maintenance will be paid
- What happens to future assets or inheritance
- In Brisbane and Queensland, BFAs are commonly used by professionals, business owners, and couples who want to minimise financial risk.
Why BFAs Are Popular in Brisbane and Across Australia
Prenups and BFAs have become increasingly common among:
- Professionals
- Business owners
- FIFO workers
- Couples entering relationships later in life
- People with blended families
- People who have gone through divorce previously
In Brisbane, many couples use BFAs to protect their home, family trusts, and investment portfolios.
Case Study Example: Protecting a Brisbane Home
Imagine you own a home in Brisbane’s northside valued at $750,000. You enter a new relationship, and you are concerned about protecting the house if things go wrong.
A BFA can state that:
- The Brisbane property remains yours
- The mortgage remains your responsibility
- Any increases in the home value stay with you
- Your partner has no claim to it if you separate
This allows you to share your life while still protecting the assets you built before the relationship.
How Prenups Work for De Facto Relationships
You can enter a BFA:
- Before becoming de facto
- During your de facto relationship
- After your separation
Many Australians mistakenly believe prenups only apply to married couples. In reality, they apply to any couple living together on a genuine domestic basis. In Brisbane, this often includes blended families or couples who move in together quickly due to renting costs.
What a BFA Cannot Cover
There are limits to what you can include. For example, a BFA cannot:
- Decide future parenting arrangements
- Set child support for future children
- Force behaviour within the relationship
- Override decisions about child welfare
Parenting and children’s issues must be handled separately through parenting plans or court orders.
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Frequently Asked Questions
Do BFAs actually work?
Yes, when drafted properly. High-quality BFAs that meet all requirements have a strong chance of being upheld.
Can you update a BFA?
Yes. You can create a new agreement that replaces the old one.
Do you need to file it with a court?
No. You simply store it securely.
Do both partners need a lawyer?
Yes. You cannot share the same lawyer.
Can you do a prenup after marriage?
Yes. These are called postnuptial BFAs.
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