Capital Gains Tax Calculator

Estimate your capital gains tax on property, shares, or crypto. Includes the 50% CGT discount for assets held over 12 months, cost base adjustments, and the marginal rate impact based on your other income. Updated for 2026-27.

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Enter your asset details

$
$0$5,000,000
$
$0$5,000,000
$
$0$500,000
mths
1mths360mths
$
$0$500,000
Estimated capital gains tax
$24,775
CGT
Gross capital gain
$145,000
50% discount
Yes
Taxable gain
$72,500
Effective CGT rate
17.1%

The 50% CGT discount applies because you held the asset for 3 years. Only $72,500 of your $145,000 gain is taxable.

CGT breakdown

ComponentAmount
Sale price$550,000
Less: purchase price$400,000
Less: capital costs$5,000
Gross capital gain$145,000
Less: 50% CGT discount$72,500
Net capital gain (added to income)$72,500
Your other income$85,000
Estimated CGT payable$24,775

Try these scenarios

Test the 12-month discount

Set the holding period to 11 months, then 13 months, to see how the 50% discount dramatically reduces your CGT. On a $150,000 gain, the discount saves tens of thousands in tax.

Add capital costs

Include stamp duty, legal fees, agent commissions, and renovation costs. These reduce your capital gain and are often overlooked — they can save thousands in CGT.

Model different income levels

Your CGT rate depends on your other income. Someone earning $50,000 pays a lower marginal rate on the gain than someone earning $180,000. Change your other income to see the effect.

Compare property vs shares

Try different purchase/sale prices to model property vs share portfolio disposals. The same gain is taxed differently depending on your other income and holding period.

Reinvesting the proceeds?

After CGT, your net proceeds are approximately $525,225. If you're looking to finance your next asset purchase, see what repayments would look like.

Save your calculation

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Frequently asked questions

Results are estimates only and should not be relied upon for financial decisions. Actual capital gains tax repayments will depend on the lender, your credit profile, and the specific terms offered. Interest rates used are for illustration purposes only and may not reflect current market rates.

Subject to lender approval, terms and conditions apply.

This calculator is general information only and is not financial advice.