Introduction
Q1: If money or property falls into my lap after we separate, can my ex claim part of it?
A: The court has to count it before it can decide anything. A windfall you still hold at trial is your property, so it goes into the picture. Your ex may end up with little or nothing from it, but only after the court has looked at everyone's contributions. Reference: Holland [2017] FamCAFC 166
Q2: If I received a big injury payout after separation, is it shared property?
A: The payout sits in the property pool, but your ex's claim on it is usually small. The court gives most of the credit to the person who received it. Your ex's future needs can still pull the final split back toward them. Reference: Gully & Aksoy [2017] FCCA 118
Q3: If the government buys my land for far more than I paid, do I keep the whole gain?
A: The gain is usually treated as a windfall that neither of you can take sole credit for. You did not plan the compulsory acquisition, so the court will not treat the jump in value as your personal achievement. Reference: Whiton & Dagne [2019] FamCAFC 192
Is a windfall after separation part of the property pool?
Yes, section 79 of the Family Law Act 1975 empowers the court to deal with all of the property you and your ex hold when the trial takes place, and neither the timing nor the way you came by it makes any difference. An inheritance, a compensation payout, a lottery win or a sudden leap in the value of land is property provided you still hold it when the case is decided.
Plenty of people draw a line at the date of separation and assume that any windfall arriving afterwards is theirs alone. The Full Court of the Family Court has rejected that idea on more than one occasion. In Holland [2017] FamCAFC 166, the court explained that labels such as inheritance or after-acquired property merely describe where an asset came from; they do not determine whether the asset is in or out.
"However, there is no basis for excluding from consideration any property in which the parties have an existing legal or equitable interest."
The dispute over a windfall is therefore rarely about whether it gets counted at all. What is contested is how much credit it earns you once it is counted. Where the windfall arrived years after you separated and your ex contributed nothing to it, you will usually receive most or all of the credit. The court, however, can only arrive at that result after it has examined the asset properly.
The cases discussed in this article concern inheritances, a compensation payout and a government acquisition. Not one of them involves a lottery win, yet the rule does not turn on where the money came from. As the Full Court said in Calvin & McTier below, all property held at trial can be the subject of orders regardless of when it was acquired, which means lottery winnings after divorce or separation are assessed in the same way.
The couple had lived together for roughly 17 years and had two children. They separated in July 2007, and the husband then moved in with his brother. The brother was later diagnosed with cancer, and the husband looked after him until he died in 2010. Under the brother's will, the husband received a property, known as Property W, in February 2011, about three and a half years after separation. By trial it carried a value of $715,000.
At first instance, the judge excluded Property W from the asset pool and described it as a financial resource of the husband rather than property. A financial resource is something a person can expect to benefit from but does not own outright, and the court cannot make property orders over it. The wife appealed, arguing that Property W was plainly the husband's property and that she should have received credit for her indirect contributions to it.
Outcome: The Full Court allowed the appeal and sent the case back for a new hearing. The inheritance was property the husband already owned, so it was wrong to call it a financial resource. To leave it out of the contribution assessment altogether amounted to an error of principle. In the court's view, the trial judge could have weighed Property W separately and might still have found that the wife had no claim to it, but only after bringing it in and making findings about contributions across the whole period up to trial.
Inheritance after separation: one pool or two?
An inheritance after separation is the windfall that reaches the courts most often. Once the court counts it, it faces a choice about how to handle the asset. It can place everything in a single pool and assess contributions across the whole of that pool, or it can set the windfall up as a separate pool and weigh contributions to each pool on its own. Neither approach is compulsory.
Calvin & McTier [2017] FamCAFC 125 states this principle most clearly. The husband contended that an inheritance after separation should be shared only where it bears some real connection to the marriage. The Full Court rejected that contention.
"All of the property then held by both of the parties or either of them can therefore be the subject of orders under s 79, regardless of when particular assets were acquired."
Choosing between one pool and two is a matter of method rather than outcome. On either path, the court must show how the windfall influenced its findings on contributions. What it cannot do is leave the windfall out of the exercise altogether.
The parties married in February 2002, separated in April 2010 and divorced in August 2011. Each parent cared equally for their one child. In January 2014, some four years after separation, the husband received an inheritance. By the time of trial, $430,686 of it remained unspent, which represented 32 per cent of a pool of roughly $1.3 million.
At trial, the magistrate put the inheritance into a single pool with the other property and assessed contributions at 75:25 in the husband's favour, chiefly because of his initial contributions and the inheritance. A further 10 per cent adjustment for the wife's future needs then moved the split to 65:35. The husband appealed, submitting that the inheritance had no link to the marriage and should therefore never have been included.
Outcome: The Full Court dismissed the appeal with costs. The treatment of property acquired after separation falls within the court's discretion, and the magistrate could properly include the inheritance or deal with it separately. At no point did the husband contend that the final 65:35 split was unfair. His complaint concerned only the process, and that process was open to the magistrate.
| Comparison | Holland [2017] | Calvin & McTier [2017] |
|---|---|---|
| When the inheritance arrived | About 3.5 years after separation | About 4 years after separation |
| Value | Property valued at $715,000 at trial | $430,686 unspent, 32% of the pool |
| How the trial judge treated it | Left out of the pool as a financial resource | Included in one pool, contributions 75:25 to the husband |
| Result on appeal | Appeal allowed, case reheard | Appeal dismissed with costs |
| Lesson | The court must include the windfall before deciding who gets credit for it | One pool is a valid approach if the contribution findings reflect the windfall |
Key factor: Both inheritances arrived years after separation, and process was what divided the two outcomes. In Calvin & McTier, the court counted the inheritance and then gave the husband heavy credit for it. In Holland, the court skipped the counting step, and that omission on its own sufficed to overturn the decision.
How much credit does a windfall after separation earn you?
Even when a windfall after separation goes into one pool, the court must still give proper credit to the person who received it. Where your ex had nothing to do with the windfall, the contribution percentages should shift in your favour. If a judge includes the asset but overlooks who brought it in, that is an appealable error.
Besim & Zehra [2025] FedCFamC1A 181 offers a recent example. The appeal judge accepted that the trial judge could properly place the husband's inheritance on the same balance sheet as everything else. The difficulty lay in what came next.
"As I have said, the post-separation contributions, properly understood, include the inheritance and the savings of the appellant, some 17 per cent of the available asset pool. There is thus a very significant post-separation contribution by the appellant."
If a windfall has come your way since separation, this case shows why you must ensure the court recognises it as your contribution, with the dates, the amounts and the source of the money set out clearly, instead of assuming the judge will work it out from the balance sheet.
Net property came to roughly $2.45 million, most of it a jointly owned home with a value of $1.7 million. After separation, the husband gained an entitlement to $159,000 from his late grandmother's estate. He also saved $261,000 out of his income, and the two sums together represented about 17 per cent of the pool. The wife contributed nothing to either sum.
The trial judge assessed contributions at 65:35 in the husband's favour, but held that the wife had contributed slightly more after separation. A 5 per cent adjustment for the wife's future needs produced a 60:40 split. The husband appealed, contending that the trial judge had overlooked his inheritance and savings.
Outcome: Aldridge J allowed the appeal. Nothing in the reasons demonstrated that the trial judge had recognised the husband's sole contribution to the inheritance and the savings. The court exercised the discretion afresh, assessed contributions at 75:25 in the husband's favour, retained the 5 per cent adjustment for the wife, and divided the property 70:30. The husband's share rose to $1,716,509 and the wife's to $735,647.
Is a compensation payout after separation handled differently?
The court handles a personal injury payout received after separation much as it handles an inheritance. The payout sits in the pool, and the recipient usually takes most of the credit. Compensation, however, often carries a complication. The accident that produced the payout may also have removed the recipient's capacity to work, and the other party may have serious needs of their own. The future needs factors (formerly s 75(2), now s 79(5) of the Family Law Act 1975) can then draw the final split back toward the other party.
"I propose to treat the party's assets as one pool even though I accept the wife's contribution to the current value of the superannuation pool is at first blush limited."
The marriage ran for 22 years and produced three children. The wife, then 52, had stayed at home to raise the family and had been out of work for 24 years. Their youngest child, then about 11, had an intellectual disability and might never manage to support himself. After separation, the husband suffered severe injuries in a motorcycle accident and could no longer work. An insurance payout of $1.4 million went into his superannuation, which grew to about $2.1 million. After debts and an allowance for tax, the pool available for division stood at $2,891,196.
The husband contended that the wife's contribution to the superannuation was limited, because most of the fund flowed from his accident. His counsel argued that he should keep 90 to 92 per cent of the fund, with the wife receiving 7 to 8 per cent. Even the wife's own counsel assessed her contribution to the fund at only about 17.5 per cent. The wife relied on her decades as homemaker and parent, and on her sole care of their son since the accident, which had freed the husband to focus on his rehabilitation.
Outcome: Judge Henderson accepted that the wife's claim on the $1.4 million was limited, because the money flowed from an accident after separation. He assessed contributions at 75:25 in the husband's favour. Neither party, however, could work, and the wife also had to support their son, probably for the rest of her life. She received a 15 per cent adjustment for future needs, and the final split stood at 60:40 in the husband's favour.
| Comparison | Besim & Zehra [2025] | Gully & Aksoy [2017] |
|---|---|---|
| Type of windfall | $159,000 inheritance, plus $261,000 in savings | $1.4 million injury payout |
| Share of the pool | About 17%, together with the savings | Most of a $2.1 million superannuation fund |
| Contribution finding | 75:25 to the husband on appeal | 75:25 to the husband |
| Future needs adjustment | 5% to the wife | 15% to the wife |
| Final split | 70:30 to the husband | 60:40 to the husband |
Key factor: Both windfalls produced a 75:25 contribution finding in favour of the recipient. The other party's future needs drove the difference. In Gully & Aksoy, the wife could not work and was raising a child with a disability, so her adjustment was 15 per cent rather than 5.
When can neither of you claim a windfall alone?
A windfall does not always belong to the person whose name appears on the title. Where an asset leaps in value because of an outside event, such as a government rezoning or compulsory acquisition, the court is unlikely to treat the gain as one party's personal achievement. Neither of you planned it, so neither of you can claim sole credit for it.
"It is well settled by authority … that a sharp rise in property value brought about by a rezoning or resumption is properly treated as a windfall gain for which neither party can take sole credit."
Whiton & Dagne stands apart from the other cases in this article in one respect: the government acquisition took place before the couple's final separation, not after it. The case appears here because it reveals the other side of windfall law, which runs opposite to the inheritance cases. An inheritance usually comes to one person because of who they are, whereas a rezoning or resumption gain flows from the asset itself, and that asset was usually bought and held during the relationship with both parties contributing in their own ways.
The parties' de facto relationship spanned 18 years but broke apart repeatedly along the way, leaving roughly 12.5 years of living together in total. The trial judge found that the man's family violence caused those separations and that the woman shouldered the main load as homemaker and parent throughout. In 2003, the man put $160,000 from the sale of an earlier property toward a $258,000 property. In January 2014, the State Government compulsorily acquired the property and paid him $2,336,288.
The trial judge described the purchase as a canny investment decision, credited the man with the gain, held that the woman's contributions stopped during each separation, and divided the property 75:25 in his favour. The woman appealed.
Outcome: The Full Court allowed the appeal and sent the case back for a new hearing. The man had bought the land with a view to developing it, and nothing showed that he foresaw the compulsory acquisition more than a decade later. As a windfall, neither party could claim the gain alone.
For more on how courts treat inheritances, see Inheritance and Divorce in Australia: How Courts Decide, which deals with inheritances received during the relationship. Where an inheritance makes up a large share of the pool, Large Inheritance in Divorce: 70/30 or 50/50 in Australia? examines how its size affects the percentage split.
What should I do if I receive a windfall after separation?
Disclose it. Each party must give full and frank disclosure of their financial position, and that duty extends to an inheritance, a compensation payout, a lottery win or any other windfall received after separation. A windfall the court never learns about cannot earn you any credit.
Keep the paper trail. Hold on to the will and estate distribution statement, the settlement deed or payout letter, or the prize notice, together with the bank records showing where the money went. Dates carry weight. Your strongest argument is that the money reached you after separation and that your ex contributed nothing to it.
Think carefully before mixing it with shared money. Once you use a windfall to pay down a joint mortgage or cover joint debts, arguing that it should be treated separately becomes harder.
Ask the court to recognise it, not to ignore it. After Holland and Calvin & McTier, an argument that a windfall should be excluded gets you nowhere. Press instead for how much credit it should earn you, whether by way of a separate pool or a clear adjustment in your favour, as the husband successfully did in Besim & Zehra.
Check whether the gain is really yours. If the windfall is a rise in the value of an asset you both contributed to, such as a rezoning or a government acquisition, expect the court to treat it as a gain for which neither of you can take sole credit, as it did in Whiton & Dagne.
Remember the other side of the scale. Your ex's future needs still matter. Where your ex has a much lower earning capacity or cares for a child with high needs, the court may move part of the split back toward them, as it did in Gully & Aksoy.
