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Estimated impact on your tax this year
This is an estimate only, based on simplified 2025-26 resident individual tax brackets plus a flat 2% Medicare levy, or a flat 25% company tax rate. It excludes offsets, prior year losses, the Medicare levy surcharge, HECS/HELP repayments and exemptions that may apply to you. It is not tax advice.
Talk to an SBX Business AdvisorA CGT estimate tells you what the potential tax impact could be, but the right decision depends on the bigger picture.
Your ownership history, rental use, main residence history and eligible costs can all affect the final CGT position.
The type of asset, how it has been used and the structure that owns it can change the tax outcome.
Your cost base, holding period and any capital losses from other investments can affect the final result.
The timing of a sale can affect which financial year the capital gain falls into and how it interacts with your other taxable income.
The calculator gives you the number. SBX helps you understand what it means for the decision you're about to make.
Our CGT calculator uses current ATO rules and guidelines, helping you estimate the potential tax impact based on the rules that apply this financial year.
Whether you're selling a rental property, land, a commercial site, business assets or shares, this CGT calculator helps you estimate the potential capital gain across the asset types Australians commonly sell.
Held the asset for more than 12 months? The calculator applies the 50% discount automatically where you're eligible, so you can see the potential impact without doing the maths yourself.
A capital gain doesn't sit on its own, it is generally added to your other taxable income for the year. This calculator shows what that actually does to your tax position, not just the gain in isolation.
Calculating CGT on property comes down to four moving parts:
What you received when you sold the property.
What you paid for the property, plus eligible costs like stamp duty, legal fees, and certain improvements.
If you're an individual or trust and held the property for 12+ months.
CGT isn't a separate flat rate. The relevant capital gain is generally included in your taxable income and taxed at your marginal rate.
That's exactly what this calculator works through in the background, enter the details, and it does the maths for you.