Postnuptial Agreement (Australia)
This Postnuptial Agreement (the "Agreement") is entered into on AGREEMENT DATE by and between SPOUSE 1 NAME ("Spouse 1") and SPOUSE 2 NAME ("Spouse 2"), collectively referred to as the "Parties".
This Agreement is a binding financial agreement made under section 90C of the Family Law Act 1975 (Cth) (the "Act") between married spouses for the purpose of regulating the financial matters between the Parties during the marriage and in the event that the marriage breaks down. The Parties acknowledge that this Agreement is intended to be legally binding and to exclude, or limit, the jurisdiction of the Federal Circuit and Family Court of Australia to make orders with respect to the property, financial resources and spousal maintenance of the Parties to the extent permitted by the Act.
1. THE PARTIES.
Spouse 1: SPOUSE 1 NAME, of SPOUSE 1 ADDRESS.
Spouse 2: SPOUSE 2 NAME, of SPOUSE 2 ADDRESS.
The Parties were married on MARRIAGE DATE at MARRIAGE PLACE and the marriage remains current as at the date of this Agreement.
2. INDEPENDENT LEGAL ADVICE.
In accordance with section 90G(1)(b) of the Family Law Act 1975 (Cth), each Party has received independent legal advice from a legal practitioner regarding the effect of this Agreement on their rights, and the advantages and disadvantages of making this Agreement at the time the advice was provided.
Spouse 1 received independent legal advice from SPOUSE 1 SOLICITOR of SPOUSE 1 SOLICITOR FIRM.
Spouse 2 received independent legal advice from SPOUSE 2 SOLICITOR of SPOUSE 2 SOLICITOR FIRM.
Each legal practitioner will provide a signed statement confirming that the advice was given, which will be annexed to and form part of this Agreement, as required by section 90G(1)(b) of the Act.
3. FULL AND FRANK FINANCIAL DISCLOSURE.
The Parties acknowledge that, in accordance with the requirements for binding financial agreements under the Family Law Act 1975 (Cth), each Party has made full and frank financial disclosure to the other of their financial circumstances as at the date of this Agreement.
Assets and liabilities of Spouse 1 as at AGREEMENT DATE: Assets: SPOUSE 1 ASSETS. Liabilities: SPOUSE 1 LIABILITIES.
Assets and liabilities of Spouse 2 as at AGREEMENT DATE: Assets: SPOUSE 2 ASSETS. Liabilities: SPOUSE 2 LIABILITIES.
4. PROPERTY DIVISION ON SEPARATION OR DIVORCE.
In the event that the marriage of the Parties breaks down and the Parties separate, the Parties agree that their respective property and financial resources shall be divided as follows: PROPERTY DIVISION TERMS.
Property acquired jointly by the Parties during the marriage shall be treated as follows: JOINT PROPERTY TREATMENT. Each Party retains all property held in their sole name at the date of this Agreement as their separate property, subject to the terms set out above.
5. BINDING EFFECT.
This Agreement is intended to be a binding financial agreement under section 90C of the Family Law Act 1975 (Cth). The Parties intend that, to the extent permitted by law, this Agreement shall exclude the jurisdiction of the Federal Circuit and Family Court of Australia and any other court to make orders with respect to the matters dealt with in this Agreement. The Parties acknowledge that the Court retains the power to set aside this Agreement in certain circumstances under section 90K of the Act, including where there has been fraud, duress, unconscionable conduct, a material change in circumstances rendering it impracticable to carry out the Agreement, or a significant change in circumstances relating to the care of a child of the marriage.
6. TERMINATION.
TERMINATION CIRCUMSTANCES. The Parties acknowledge that this Agreement may be set aside under section 90K of the Family Law Act 1975 (Cth) or terminated by a further written agreement under section 90J of the Act that complies with the requirements of that section.
7. GOVERNING LAW AND JURISDICTION.
This Agreement is governed by the Family Law Act 1975 (Cth) and the laws of STATE. Any dispute arising out of or in connection with this Agreement shall be resolved, to the extent possible, through negotiation between the Parties and their respective legal advisers, before any application is made to a court.
8. GENERAL PROVISIONS.
This Agreement constitutes the entire agreement between the Parties with respect to the subject matter hereof and supersedes all prior agreements, negotiations and understandings relating to that subject matter. If any provision of this Agreement is held to be invalid or unenforceable, the remaining provisions shall continue in full force and effect. This Agreement may only be amended by a written document signed by both Parties and witnessed, which complies with the requirements for binding financial agreements under the Family Law Act 1975 (Cth).
IN WITNESS WHEREOF, the Parties have executed this Postnuptial Agreement on the date written above, intending it to be a binding financial agreement under section 90C of the Family Law Act 1975 (Cth). Each Party has received independent legal advice as required by section 90G of the Act.
Spouse 1: SPOUSE 1 NAME
Spouse 2: SPOUSE 2 NAME
Signed in the presence of a witness.
Spouse 1
________________
Signature
Date: ________________
Spouse 2
________________
Signature
Date: ________________
Witness (Spouse 1)
________________
Signature
Date: ________________
Witness (Spouse 2)
________________
Signature
Date: ________________
What Is a Postnuptial Agreement (Australia)?
A Postnuptial Agreement in Australia records how a couple agree to divide their property and finances if the relationship ends, intended to be binding under the Family Law Act 1975 (Cth).
The term 'postnuptial agreement' is used interchangeably with 'post-nuptial financial agreement' or 'binding financial agreement after marriage'. All refer to the same legal instrument under section 90C of the Family Law Act 1975 (Cth). When validly made, this agreement operates to exclude or limit the jurisdiction of the Federal Circuit and Family Court of Australia to make property settlement orders under Part VIII of the Act in relation to the matters dealt with in the agreement. This is a profound legal effect — the parties are agreeing in advance, during the marriage, how their financial affairs will be resolved if the relationship ends.
For a postnuptial agreement to be legally binding, section 90G of the Family Law Act 1975 (Cth) requires that each party receives independent legal advice from a separately qualified Australian legal practitioner before signing. The advice must cover the effect of the agreement on the party's rights, and the advantages and disadvantages of making the agreement at the time the advice was provided. Each party's solicitor must provide a signed statement confirming the advice was given, and that statement must be attached to or exchanged with the agreement. The agreement must be in writing and signed by both parties.
Full financial disclosure is foundational to any binding financial agreement. Both spouses must disclose all assets, liabilities, superannuation interests and financial resources to each other before the agreement is made. An agreement tainted by concealment or misrepresentation is vulnerable to being set aside under section 90K of the Family Law Act 1975 (Cth).
A postnuptial agreement provides married couples with certainty, autonomy and protection. It is particularly valuable where one or both spouses have pre-marital assets, business interests, inherited wealth or children from previous relationships that they want to protect. It removes the uncertainty of a contested property settlement if the marriage later breaks down, and significantly reduces the potential cost and conflict of separation.
The legal framework governing the Postnuptial Agreement (Australia) in Australia draws on several key statutes and regulatory bodies. Under Australian law, the Privacy Act 1988 (Cth) and Australian Privacy Principles (APPs) govern personal data in this document. The Australian Consumer Law (Schedule 2, Competition and Consumer Act 2010) provides consumer guarantees under Sections 51-54. The Federal Circuit and Family Court of Australia has jurisdiction over family law matters under the Family Law Act 1975 (Cth). The Australian Financial Complaints Authority (AFCA) handles consumer financial disputes. State and territory Magistrates Courts handle small civil claims. Parties executing a Postnuptial Agreement (Australia) in Australia should confirm the document reflects current law, including any amendments enacted since the original drafting date. The Family Law Act 1975 (Cth) Part VIIIA, s 90C sets the foundational requirements.
When Do You Need a Postnuptial Agreement (Australia)?
A Postnuptial Agreement is appropriate for married couples in Australia who want to put their financial arrangements in writing during the marriage, whether as a precaution or in response to a specific change in circumstances.
One of the most common circumstances is a significant change in financial position during the marriage. If one spouse starts a new business, receives a large inheritance, is gifted property by family, or experiences a dramatic increase in the value of their assets, a postnuptial agreement provides a formal record of how that asset will be treated if the marriage ends. Without such an agreement, that asset could be subject to the court's broad discretionary power under Part VIII of the Family Law Act 1975 (Cth) to make such property orders as it considers just and equitable.
A postnuptial agreement is also appropriate when a couple married without a prenuptial agreement (a section 90B financial agreement) and later decide that they want to formalise their financial expectations. Some couples are so focused on the wedding itself that they do not address financial arrangements beforehand; a postnuptial agreement allows them to address those matters during the marriage instead. It is also useful where the couple did have a prenuptial agreement that they wish to update, extend or replace.
For couples with children from previous relationships, a postnuptial agreement can protect assets that the parties intend to preserve for their respective children, confirming those assets are not swept into a property settlement on separation. Similarly, where one spouse owns a family business or holds a significant interest in a private company, a postnuptial agreement can confirm that the business is protected and not disrupted by a contested property settlement.
Couples who have experienced conflict about financial matters during the marriage sometimes use a postnuptial agreement as part of a broader effort to restructure their relationship on firmer foundations — agreeing on financial responsibilities, asset ownership and what would happen if they separated. In that context, a postnuptial agreement, together with sound financial and legal advice, can provide a stabilising influence.
As with all binding financial agreements under the Family Law Act 1975 (Cth), a postnuptial agreement must be made with the benefit of independent legal advice for each party. This confirms that both spouses understand the agreement, that neither has been pressured into signing, and that the agreement is as likely as possible to withstand scrutiny if later challenged in the FCFCOA.
What to Include in Your Postnuptial Agreement (Australia)
A thorough Postnuptial Agreement under section 90C of the Family Law Act 1975 (Cth) must address the following key elements to be effective and enforceable.
The first and most critical element is independent legal advice. Both spouses must receive independent legal advice from separate solicitors before signing. The identity of each party's solicitor and their law firm must be recorded in the agreement, and each solicitor's signed certificate of advice must be annexed to the agreement. Failure to obtain independent legal advice is the most common reason for a binding financial agreement to be set aside.
The second element is full and frank financial disclosure. Both spouses must disclose all assets, liabilities, superannuation interests and financial resources at the time of the agreement. The disclosure should include real property with estimated valuations, superannuation with fund names and estimated balances, investment accounts, bank accounts, business interests and all debts. Concealment or misrepresentation of any material asset or liability is grounds for the agreement to be set aside under section 90K of the Family Law Act 1975 (Cth).
The third element is property division terms — a clear, thorough specification of how each category of asset and liability will be dealt with on separation. This should address the family home, investment properties, superannuation, business interests, bank accounts, shares and motor vehicles. The treatment of property acquired jointly during the marriage should also be addressed.
The fourth element (if included) is superannuation splitting provisions under Part VIIIB of the Family Law Act 1975 (Cth), specifying which fund is to be split, by what percentage or amount, and in whose favour.
The fifth element (if included) is spousal maintenance provisions, addressing whether either spouse may seek spousal maintenance under Part VIII of the Family Law Act 1975 (Cth) on separation, and on what basis.
The sixth element is a termination clause, specifying the circumstances in which the agreement will cease to have effect — for example, the birth of a child, a period of resumed cohabitation after separation, or a subsequent agreement. The seventh element is governing law and dispute resolution. The agreement must be governed by the Family Law Act 1975 (Cth) and must acknowledge the court's residual power to set the agreement aside under section 90K in appropriate circumstances.
Additional compliance elements for a Postnuptial Agreement (Australia) used in Australia include: Under Australian law, the Privacy Act 1988 (Cth) and Australian Privacy Principles (APPs) govern personal data in this document. The Australian Consumer Law (Schedule 2, Competition and Consumer Act 2010) provides consumer guarantees under Sections 51-54. The Federal Circuit and Family Court of Australia has jurisdiction over family law matters under the Family Law Act 1975 (Cth). The Australian Financial Complaints Authority (AFCA) handles consumer financial disputes. State and territory Magistrates Courts handle small civil claims. Forms-legal.com provides this template as a starting point for Australia-compliant documentation.
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title = {Postnuptial Agreement (Australia) (Australia)},
year = {2026},
howpublished = {\url{https://forms-legal.com/australia/personal/family/postnuptial-agreement-australia}},
note = {Free legal document template. Based on Family Law Act 1975 (Cth) Part VIIIA, s 90C}
}Also available for these jurisdictions:
Frequently Asked Questions
For a postnuptial agreement to be a legally binding financial agreement under section 90C of the Family Law Act 1975 (Cth), it must comply with all the requirements of section 90G of the Act. The key requirements are: (1) the agreement must be in writing and signed by both parties; (2) before signing, each party must receive independent legal advice from a separate qualified Australian legal practitioner about the effect of the agreement on their rights, and the advantages and disadvantages of making the agreement at the time the advice was provided; (3) each party's legal practitioner must provide a signed statement confirming that the advice was given, and that statement must be attached to the agreement or exchanged between the parties. Failure to satisfy these requirements — in particular, the independent legal advice requirement — can render the agreement unenforceable. In addition, both parties must make full and frank financial disclosure of their assets, liabilities and financial resources, and the agreement must not have been obtained by fraud, duress, undue influence or unconscionable conduct. Courts have shown a willingness to set aside agreements that do not meet these standards under section 90K of the Family Law Act 1975 (Cth).
Yes. Section 90K of the Family Law Act 1975 (Cth) gives the Federal Circuit and Family Court of Australia (FCFCOA) the power to set aside a binding financial agreement in specific circumstances. These include: where the agreement was obtained by fraud, including by a failure to disclose a material matter such as a significant asset or liability; where the agreement was made under duress, undue influence or unconscionable conduct; where the agreement is void, voidable or unenforceable under ordinary contract law principles; where, since the agreement was made, there has been a material change in circumstances — including circumstances relating to the care, welfare and development of a child of the parties — that makes it impracticable for the agreement to be carried out; or where a party to the agreement will suffer hardship if the agreement is not set aside. Non-compliance with the technical requirements of sections 90C and 90G can also make an agreement unenforceable. An agreement that was made after thorough financial disclosure, with genuine independent legal advice on both sides, and where there is no suggestion of pressure or unfairness, is significantly less likely to be set aside.
Superannuation is treated separately from other property under Australian family law. It is not automatically included in the general property pool. Instead, superannuation interests of both spouses are regulated under Part VIIIB of the Family Law Act 1975 (Cth), which allows for the splitting of superannuation between parties upon the breakdown of a relationship. A binding financial agreement made under section 90C can address superannuation by specifying whether and how each party's superannuation interest will be retained or split. However, any actual splitting of a superannuation interest must be implemented through a formal superannuation splitting agreement or order that complies with Part VIIIB of the Family Law Act 1975 (Cth) and the Superannuation Industry (Supervision) Act 1993 (Cth), and must be accepted by the trustee of the relevant superannuation fund. Both parties should obtain current estimates of their superannuation balances before entering a postnuptial agreement, and the agreement should clearly identify each fund and the proposed treatment of that interest.
The principal difference is timing. A prenuptial agreement — technically called a financial agreement made before marriage under section 90B of the Family Law Act 1975 (Cth) — is made before the parties marry. A postnuptial agreement is made under section 90C of the Act after the parties have married but before any separation. Both types are binding financial agreements and both must comply with the same strict requirements under section 90G, including the independent legal advice requirement. Both operate to exclude or limit the court's jurisdiction to make property orders under Part VIII of the Family Law Act 1975 (Cth). The practical difference is the context in which they are made: a prenuptial agreement sets out the parties' expectations before marriage, while a postnuptial agreement may be made to address a change in circumstances — such as one party starting a business, receiving an inheritance, or a significant increase in the value of one party's assets — that makes it desirable to record the agreed financial arrangements in a formal binding document.
No. A postnuptial agreement made under section 90C of the Family Law Act 1975 (Cth) is specifically for parties who are legally married. De facto couples — including same-sex couples — who wish to enter a binding financial agreement governing their relationship and its potential breakdown must use a separate type of financial agreement made under section 90UB (for agreements made at the commencement of the de facto relationship) or section 90UC (for agreements made during the de facto relationship). These agreements have similar formality requirements to section 90C agreements, including the need for independent legal advice. The terms 'postnuptial' and 'prenuptial' technically apply only to married couples, although the general concept of a binding financial agreement is available to both married and de facto couples under different provisions of the Family Law Act 1975 (Cth).
This template is provided for informational purposes only and does not constitute legal advice. Laws vary by jurisdiction and change over time. Consult a qualified attorney for advice specific to your situation.Full disclaimer
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