Prenup After Marriage: Is It Possible?

prenup after marriage | Melbourne Family Lawyers

So, you’ve tied the knot, but you’re wondering if it’s too late to get a prenup. Good news! It’s never too late. In Australia, you can get a postnuptial agreement, which is essentially a prenup, but after you’ve said “I do.” 

Prenup vs. Postnup: What’s the Difference?

A Binding Financial Agreement (BFA), colloquially referred to as a β€œpre-nup”, is a legally enforceable agreement between married or de facto couples. These agreements can be entered into at any stage of your relationship.

Regarding safeguarding your financial future in a marriage, you have two main options: a prenuptial agreement (prenup) and a postnuptial agreement (postnup). While they serve similar purposes, the timing and certain legal aspects can differ.


  • Prenup: Created before marriage.
  • Postnup: Created after marriage.

Assets and Debts

Both agreements typically list all the property each person owns and any debts and specify what each person’s property rights will be after the marriage.


  • Prenup: Generally set in stone unless mutually amended.
  • Postnup: This can be more flexible and adjusted as circumstances change, like the birth of a child or the acquisition of significant assets.

Legal Standing

In Australia, both prenups and postnups are legally binding if drafted correctly. However, they can be set aside by the Family Court under specific conditions, such as non-disclosure of assets.

πŸ”‘ Key Takeaway: While prenups and postnups serve similar purposes, their creation’s timing and flexibility can differ. Both are legally binding in Australia but can be set aside under certain conditions.

What is a Postnuptial Agreement?

A postnuptial agreement, or prenup after marriage, is a legal contract between spouses after marriage.

It outlines how assets and property will be divided in the event of a separation or divorce.

Like a prenup, a postnup can protect individual assets, and inheritance, and even cover spousal maintenance.

Key Takeaway: A postnuptial agreement is like a prenup but comes into play after marriage. It’s a legal way to decide how assets will be divided if things go south.

Why Consider a Postnuptial Agreement?

A post-nuptial agreement provides a legal framework for asset division, offering financial clarity and peace of mind. Here are the reasons why you should have 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.

πŸ”‘ 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.

What are the Post-Nuptial Legal Requirements?

Knowing the rules for post-nuptial agreements helps couples make fair and clear decisions about their marriage.

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.

Also read: Can a Prenup Be Thrown Out

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 favour one spouse.

πŸ”‘ 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?

A post-nuptial agreement is like a roadmap for what happens if the marriage doesn’t work out. Understanding what’s included in a post-nuptial agreement is important for couples to ensure they’re on the same page about their future together.

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.

πŸ”‘ Key Takeaway: A comprehensive post-nuptial agreement should cover various financial aspects, including assets, income, spousal maintenance, and insurance.

What are the Limitations and Exclusions in a Post-Nuptial Agreement?

Post-nuptial agreements cannot cover child custody or child support issues.

They also cannot regulate routine aspects of a marital relationship.

πŸ”‘ 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 such as prenup lawyers to ensure the agreement meets all requirements.

πŸ”‘ 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.

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  1. Pingback: Understanding the Prenup Process and Its Validity in Australia | Melbourne Family Lawyers

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