You have agreed to keep the investment property. Or you are signing the family home over to your ex. And somewhere in the back of your mind, a worry is building: is the tax office about to take a chunk out of it?
Let me give you a straight answer. Not tax-jargon but real answers.
In most cases, transferring property between separating spouses under a court order or a binding financial agreement does not trigger capital gains tax at the point of transfer. The tax rolls over to the spouse who keeps the asset. They only pay it if and when they later sell. That is the part almost no one leads with, so let’s start there.
If you want the full picture of how a settlement runs end to end, our property settlement lawyers page walks through it. This one is about the tax.
What capital gains tax actually is
Capital gains tax, or CGT, is not a separate tax with its own bill. It is the tax you pay on the profit when you dispose of an asset. Sell it, gift it, or transfer it to someone else, and if it is worth more than you paid, that gain gets added to your income for the year and taxed.
It applies to assets acquired after 20 September 1985. In a separation, the assets that usually matter are the investment property, a share portfolio, or a business. The family home is treated differently, and I will come to that.
Capital gains tax rollover relief when a relationship breaks down
This is the question most people arrive with, so here is the part that should put your mind at ease.
Where an asset is transferred from one spouse to the other because of a court order or a binding financial agreement, the relationship-breakdown rollover applies. It is automatic. You cannot opt out of it, and you do not need to apply for it. No capital gains tax falls due at the moment of transfer.
Here is the mechanic that matters. The spouse who keeps the asset inherits the original cost base and the original acquisition date. So if the property was bought in 2010 for $400,000, the spouse who keeps it is treated as though they bought it in 2010 for $400,000. They carry the built-up gain, and they pay CGT only if and when they sell down the track.
A word of caution. The rollover covers a transfer between the two of you. It does not, in the ordinary case, cover moving an asset into a trust or a company. That is a different set of rules.
The relationship-breakdown rollover sits in Subdivision 126-A of the Income Tax Assessment Act 1997.
There is a related benefit worth knowing about, and it is on stamp duty rather than CGT.
What happens when there is a property involved and you want to transfer that property from one party to another party without incurring the horrible stamp duty involved in that transfer? The answer to that is by way of an application for consent orders. There is an exemption to the stamp duty transfer if the transfer is subject to the breakdown of a relationship.
Stamp duty is state and territory law, so the detail varies by jurisdiction, but most states and territories offer a duty exemption for a transfer on relationship breakdown. The thing to hold onto is that it is the formal route, consent orders or a binding financial agreement, that opens the door to it.
What is exempt, and the discounts that apply
Not everything is caught, and the reductions are real.
- The family home. Your main residence is generally exempt from CGT for the period you lived in it.
- The 50% discount. If you have held an asset for more than 12 months, only half the gain is taxed.
- Personal-use assets under $10,000. Boats, furniture, and the like, bought for under $10,000, are disregarded.
- Collectables under $500. Art, jewellery, and similar items bought for under $500 are disregarded.
These exemptions and thresholds are set out by the ATO.
When the family court counts CGT in the property pool
Here is where a lot of people get caught out. Just because an asset carries a future CGT bill does not mean the court will knock that amount off its value when dividing the pool.
The approach comes from a 1998 Full Court decision, Rosati, which set out four principles. In plain English:
- It depends on the asset. Whether CGT gets counted turns on the circumstances of each asset: how it was acquired, what the parties intended for it, and how likely a sale really is.
- Sale ordered, likely, or bought as an investment: count it. If the court orders a sale, a sale is inevitable or probable in the near future, or the asset was acquired purely as an investment to sell for profit, the CGT is generally allowed for in that asset’s value.
- A real risk of sale: partial weight. If none of those apply but there is a significant risk the asset will have to be sold in the short to mid term, the court may not deduct the full CGT, but it can weigh that risk, giving it more weight the higher the risk and the sooner the likely sale.
- No likely sale: usually not counted. Otherwise the court generally does not reduce an asset’s value for CGT at all, unless special circumstances make it fair to allow for it, at either the full rate or a discounted one.
So the rule of thumb comes down to this. A potential CGT liability is deducted from an asset’s value where a sale is ordered, where a sale is inevitable or likely, or where the asset was bought as an investment. Where a sale is not on the cards, the court may decline to allow for it at all.
That principle held up in a 2025 case where the Full Court refused to assume a CGT liability because a sale had not been shown to be likely. The lesson is simple. If you want the court to account for a tax hit, you need evidence that the hit is real and coming, not just theoretically possible.
The court’s approach was set in Rosati & Rosati [1998] FamCA 38 and reaffirmed in Marlin & Henson [2025] FedCFamC1A 71.
Working out the tax: a quick example
The figures here are only an illustration, but the arithmetic is exactly how it runs.
Say you bought an investment unit for $400,000 and, at settlement, it is valued at $600,000.
| Step | Amount |
|---|---|
| Cost base (what you paid, plus buying and selling costs) | $400,000 |
| Sale price or valuation | $600,000 |
| Capital gain | $200,000 |
| Less the 50% discount (held over 12 months) | $100,000 taxable |
| Tax at a 37% marginal rate | about $37,000 |
That $37,000 is real money coming out of one person’s share. If the settlement splits the pool without allowing for it, the person keeping that unit quietly wears a cost the other one never does.
A real cost most people miss
An even-looking split on paper can still leave one person with a tax bill the other never carries. I see it most often with business owners.
Every settlement involving a business has potential tax consequences. Selling assets might trigger capital gains tax, moving property between entities could incur stamp duty, and in some cases a restructure of the business could have GST applications. This is where having both a family lawyer and a good accountant or tax lawyer in your corner is essential. Otherwise, you could be stuck with a big tax debt that you did not take into account when you came to a settlement.
The fix is to price the tax in before you sign, not after. Get the asset valued, and get advice on the CGT position while the pool is still being worked out.
What changed on 10 June 2025
One thing worth flagging, because the older articles you will find online were written under a different structure. From 10 June 2025, the Family Law Amendment Act 2024 reshaped how the court weighs a property settlement. The future-needs considerations that used to sit in section 75(2) now live in a restructured section 79, and the economic effect of family violence is now expressly something the court must consider.
The older CGT cases were decided under the previous section numbers. The principles survive. The numbering has moved.
The property power sits in section 79 of the Family Law Act 1975. The changes that commenced on 10 June 2025 moved the future-needs considerations into the restructured section.
What to do next
If you own an investment property, shares, or a business and you are heading into a settlement, three practical moves.
- Get the asset valued properly, so you know the gain you are actually dealing with.
- Get advice on the CGT position before you sign anything, not after the ink is dry.
- Formalise the split through consent orders or a binding financial agreement, so the CGT rollover applies and any relationship-breakdown duty exemption in your state is on the table.
If you would like to talk it through, reach out to me and my team. Book a free discovery call on 1300 614 732 or send us a message, and speak to our property settlement lawyers about where you actually stand. No pressure, no judgment, just clear advice.
Frequently Asked Questions
How do the capital gains tax family law rules work in a property settlement?
In most cases you do not pay at the point of transfer. When property moves between separating spouses under a court order or a binding financial agreement, the relationship-breakdown rollover applies automatically. The spouse who keeps the asset inherits the original cost base and pays capital gains tax only if and when they later sell it.
What is CGT rollover relief on relationship breakdown?
It is an automatic deferral. Where an asset is transferred between spouses because of a court order or binding financial agreement, no capital gains tax is charged at transfer. The receiving spouse takes on the original cost base and acquisition date, and the tax is only triggered by a later sale.
Does transferring the house to my ex-partner trigger capital gains tax?
Not at the point of transfer if it is done under a court order or binding financial agreement, because the rollover applies. On top of that, the family home is generally exempt from capital gains tax as your main residence for the time you lived there.
When does the family court take CGT into account in the property pool?
Where a sale is ordered, inevitable, or likely, or where the asset was bought as an investment, the court can deduct the potential capital gains tax from the asset’s value. Where a sale is not likely, it may decline to allow for it. You need evidence the tax is real and coming.
Is the family home exempt from capital gains tax after separation?
Generally yes, as your main residence, for the period you lived in it. Investment properties and other assets acquired after 20 September 1985 are different, and that is where the rollover and the court’s approach to the property pool come in.
