Separation Agreement Australia | s.44 Family Law Act

A separation agreement is a private written contract that records the practical and financial terms two people agree on after their relationship ends. It typically fixes the date of separation, sets out who occupies the home and who covers the mortgage or rent, allocates responsibility for joint debts, and describes how income, bank accounts and household expenses will be managed until a final settlement is reached. Couples use it to bring order to the interim period, the weeks or months between the day they separate and the day the property division is formally locked in.

It helps to be precise about what this document is not. A separation agreement is not the same as a divorce, which is a separate court process you can only start after twelve months apart. It is also distinct from a binding financial agreement under Part VIIIA (married couples) or Part VIIIAB (de facto couples) of the Family Law Act 1975, which carries strict execution requirements and can oust the court's power to divide property. A plain separation agreement does not need each party to obtain independent legal advice to exist, but it also does not enjoy the same protection from later challenge. Think of it as a clear, honest statement of intentions and interim arrangements, powerful for keeping the peace and useful as evidence, rather than an ironclad final settlement. Many couples use one as the practical bridge toward a binding financial agreement or consent orders once the dust settles.

Every separation in Australia, whether the couple was married or de facto, is governed by the Family Law Act 1975 (Cth), administered by the Federal Circuit and Family Court of Australia. The Act is a no-fault system: the court has no interest in who caused the breakup, only in arrangements that are just and equitable and, where children are involved, in the best interests of the child. A separation agreement operates in the space the Act leaves open for couples to organise their own affairs, and the closer its language tracks the statutory framework, the more useful it becomes if matters later escalate.

The most significant recent change came into force on 10 June 2025, when the Family Law Amendment Act 2024 wrote the property settlement process directly into the Family Law Act 1975. The court now follows a structured approach: it identifies and values the whole asset pool, weighs each party's financial and non-financial contributions (homemaking and parenting counted alongside earning), considers each person's future needs such as age, health and care of children, and then checks the result is just and equitable. Two reforms deserve close attention when you draft. First, the duty of disclosure, the obligation to give the other party full and honest financial information, now sits in the Act itself rather than in court rules, so hiding an account or a liability carries statutory weight. Second, the court must now consider the economic effect of family violence, including financial abuse, when dividing property. Your agreement should reflect genuine, complete disclosure of assets and debts, because a document built on a hidden asset is a document waiting to be unwound.

Timing is where people quietly lose rights. For married couples, court proceedings for property or spousal maintenance must generally start within 12 months of a divorce becoming final. For de facto couples, the limit under section 44 is 2 years from the date of separation. The Attorney-General's Department publishes a plain-English summary of these obligations in its fact sheet on the June 2025 family law property changes, worth reading before you commit anything to paper. One structural limit to keep in mind: your agreement cannot bind third parties. A bank is not released from a joint loan just because the two of you agreed one name comes off it. Releases and refinancing need their own separate process with the lender.

The most common trigger is the practical scramble of the first few weeks after separation, when two people who still respect each other need to settle who sleeps where, who pays the mortgage, and whether the joint account stays open. A written agreement stops the endless "but you said" loop and gives both people something to point to. It is equally valuable when the split is amicable enough that neither party wants to rush to court but both want the interim arrangements on record while a final settlement is negotiated.

Occupation of the family home is often the sharpest issue. When one person stays and the other moves out, the agreement can record who is responsible for the mortgage, the council rates, the insurance and the upkeep during the interim period, so the person who left is not quietly funding a house they no longer live in. Debt is the mirror image: joint credit cards, personal loans and buy-now-pay-later balances all need an owner, at least on paper, until the settlement reallocates them.

Then there is the growing category of couples who separate but keep living together, whether for the children, the cost of living, or simply because moving out is not yet possible. Recording the date of separation and the terms of the shared-but-separate arrangement matters here more than anywhere, because that date starts the clock on the twelve-month divorce period and, for de facto couples, on the two-year property limit. A separation declaration or a clearly dated agreement can also support dealings with banks and other institutions or a request to Centrelink or Services Australia to reassess your relationship status. One edge case worth flagging: a brief reconciliation of up to three months does not reset the separation clock, but a genuine resumption of the relationship does, so the agreement should note that the parties intend a permanent separation.

• The date of separation is recorded clearly and, ideally, with the circumstances that fix it, because this single date drives the twelve-month divorce eligibility for married couples and the two-year property limit under section 44 for de facto couples. Vagueness here creates problems later, so the clause invites you to state when one party communicated that the relationship was over.
• The occupation of the family home clause sets out who remains in the property, who has moved out, and who carries the mortgage, rates, insurance and maintenance during the interim period. It can also record whether the arrangement is temporary pending sale, transfer or refinancing, so nobody assumes a permanent right of residence that was never agreed.
• The interim division of assets describes how bank accounts, vehicles, household contents and other property are held and used until a final settlement. It is drafted as a holding position, not a final carve-up, and it makes clear that it does not prejudice either party's later entitlement under the Family Law Act 1975.
• The allocation of liabilities assigns responsibility for joint and individual debts during the interim, while acknowledging that any agreement between the parties does not release either of them from obligations owed to a lender. This clause protects the person who is meant to be off a loan from being surprised when the bank still comes calling.
• The financial disclosure and honesty clause reflects the statutory duty of disclosure that entered the Family Law Act 1975 on 10 June 2025, confirming that both parties have exchanged full information about their assets, liabilities and financial resources. Sign nothing until this exchange has actually happened.
• The separation under one roof provisions, where relevant, record that the parties live at the same address but no longer function as a couple, describing the changes in sleeping, financial and social arrangements that evidence a genuine separation.

Family law in Australia is Commonwealth law, so the Family Law Act 1975 applies uniformly across every state and territory, which is unusual and genuinely helpful. The four-step property process, the disclosure duty and the no-fault divorce principle are the same whether you separated in Sydney or Darwin. That said, a few regional wrinkles are worth naming.

Western Australia is the one true exception. For de facto couples, property matters are handled under the state's own Family Court Act 1997 rather than the Commonwealth Act, and de facto financial disputes are heard in the Family Court of Western Australia. Married couples in WA still fall under the federal system. Practically, a WA de facto couple relying on separation under one roof for a divorce should also be aware that the court there typically expects three supporting affidavits rather than two.

New South Wales, Victoria and Queensland all sit squarely within the federal framework for both married and de facto couples, so the same Part VIIIAB rules and the two-year de facto limit apply. Where these states differ is around the edges: family violence orders (AVOs in NSW, intervention orders in Victoria, DVOs in Queensland) are made by state courts under state legislation, and they can intersect with your family law matter, particularly now that the Family Law Act 1975 directs the court to weigh the economic effect of family violence. A separation agreement should never be used to paper over a safety issue, and where violence is present, the practical arrangements in an employment or personal matter may also need protective input.

Registered relationships add another layer. In several states, a relationship registered under a state register (for example the Relationships Register Act 2010 in NSW) can establish de facto status without the usual two-year cohabitation threshold, which affects who can seek a property settlement in the first place.

You start by identifying the two parties and the nature of the relationship, married or de facto, because that choice determines which part of the Family Law Act 1975 frames your arrangement. From there the template asks you to fix the date of separation and, if you have been living apart, to say so plainly; if you have been separated under one roof, it prompts you to describe the practical changes that show the relationship genuinely ended.

Next you work through the home and the money. You record who occupies the family home and who carries its costs during the interim, then move to the joint accounts, the vehicles and the household contents, setting out how each is held and used for now. The liabilities section walks you through the joint and individual debts, assigning interim responsibility while making clear that lenders are not bound by your private arrangement. Throughout, the form nudges you toward full financial disclosure, reflecting the duty that became statutory in June 2025. Once both people have read the draft, confirmed the disclosure is complete and signed, you download the finished agreement in Word and PDF. If your situation involves significant assets, the template signals where a more formal binding financial agreement or business-related document may be the safer path.

The mistake that undoes more separation agreements than any other is incomplete disclosure. One party forgets, or quietly omits, a superannuation balance, an investment account or a personal loan, and the whole document becomes vulnerable the moment the other side finds out. Since the duty of disclosure entered the Family Law Act 1975 on 10 June 2025, this is no longer a matter of etiquette, it is a statutory obligation, and an agreement resting on a hidden asset can be set aside. The second frequent error is treating a plain separation agreement as if it were a binding financial agreement. Without independent legal advice for each party and the strict execution required under Part VIIIA or Part VIIIAB, the document records intentions and interim terms, but it does not carry the finality people often assume it does.

People also misunderstand third parties. Agreeing that one name comes off the mortgage does nothing until the bank actually releases that person and refinances the loan, and the party who thinks they are free of the debt can be caught badly. Getting the date of separation wrong, or leaving it vague, is another quiet trap, because that date starts both the twelve-month divorce clock and the two-year de facto property limit under section 44. Missing that two-year window means asking the court's permission to proceed at all, and permission is far from guaranteed. Finally, some couples use the agreement to re-litigate the relationship, loading it with blame. Australia is a no-fault jurisdiction; a clean, calm document serves you far better than a grievance in writing.