What Is a Post Nuptial Agreement?
A post nuptial agreement is a legal contract created by spouses after getting married.
It outlines how assets and financial responsibilities will be divided in the event of a divorce or separation.
In Australia, these agreements are called “Binding Financial Agreements.”
Post nuptial agreements, colloquially known as “postnups,” are becoming increasingly popular in Australia.
These legal contracts are entered into by married couples who wish to define the financial terms of their relationship.
🔑 Key Takeaway: A post-nuptial agreement provides a legal framework for asset division, offering financial clarity and peace of mind.
Why Consider a Post Nuptial Agreement?
Protecting Family Wealth
One of the primary reasons couples opt for a post nuptial agreement is to protect family wealth.
This is especially relevant when one spouse comes from a wealthy background or expects a significant inheritance.
The agreement can specify that certain assets remain separate property, thereby protecting them from division in the event of a divorce.
Providing for Children from Previous Marriages
A post nuptial agreement can ensure that children from previous marriages are financially provided for in blended families.
The agreement can specify what assets will go to which children, offering a clear roadmap for asset distribution.
Resolving Recurring Arguments Over Finances
Money is a common source of tension in relationships.
A post nuptial agreement can help by setting clear financial boundaries and responsibilities, potentially reducing arguments related to finances.
Protecting Business Interests
If one or both spouses are business owners, a post nuptial agreement can protect the business from being divided as a marital asset.
The agreement can specify that the business is separate property or outline how its value will be divided in the event of a divorce.
🔑 Key Takeaway: Post-nuptial agreements offer a structured way to manage various financial aspects of a marriage, from protecting family wealth to resolving financial disputes.

Legal Requirements
Be Voluntary for Both Parties
Both spouses must enter into the post nuptial agreement willingly, without any form of coercion or pressure.
This ensures that the agreement is fair and mutually beneficial.
Include Full Financial Disclosure from Both Spouses
Both parties must fully disclose their financial assets and liabilities.
This transparency is essential for crafting a fair and equitable agreement.
Comply with the Family Law Act 1975
The agreement must comply with the Family Law Act 1975 to be considered legally binding in Australia.
This includes various stipulations, such as having the agreement in writing and signed by both parties.
Be Fair and Just
The agreement must be fair to both parties. The agreement may not hold up in court if the terms heavily favor one spouse.
🔑 Key Takeaway: For a post-nuptial agreement to be legally binding, it must meet specific legal requirements, including voluntariness, full financial disclosure, and fairness.
What’s Included in a Post-Nuptial Agreement?
Assets and Debts
The agreement typically outlines how both marital and separate assets and debts will be divided.
This can include real estate, bank accounts, and even personal belongings.
Income and Future Gains
The agreement can specify how future income and potential financial gains, like bonuses or profits from investments, will be handled.
Spousal Maintenance
Spousal maintenance, or alimony, can also be included in the agreement. This specifies if, how much, and for how long one spouse will financially support the other in case of a divorce.
Insurance Coverage
Some couples include clauses about maintaining life, health, or property insurance policies, specifying who will be the beneficiary and how the benefits will be divided.
🔑 Key Takeaway: A comprehensive post-nuptial agreement should cover various financial aspects, including assets, income, spousal maintenance, and insurance.
Limitations and Exclusions
Post-nuptial agreements cannot cover child custody or child support issues.
They also cannot regulate routine aspects of a marital relationship.
🔑 Key Takeaway: Post-nuptial agreements are powerful tools, but they have limitations and should not be seen as a one-size-fits-all solution.
Always Consult Legal Professionals
Post-nuptial agreements offer a structured way for couples to manage their financial affairs.
While they may not be the most romantic aspect of a marriage, they can provide a safety net that allows the relationship to flourish.
As with any legal contract, it’s advisable to consult legal professionals to ensure the agreement meets all requirements.
🔑 Key Takeaway: A well-crafted post-nuptial agreement can be a positive step towards a secure and harmonious marital life.
Director of Melbourne Family Lawyers, Hayder manages the practice and oversees the running of all of the files in the practice. Hayder has an astute eye for case strategy and running particularly complex matters in the family law system.