Capital Gains Tax Calculator 2024–25

Calculate the Capital Gains Tax (CGT) on your Australian investment. Enter your purchase price, sale price, and income to see your estimated tax liability.

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$0$2m
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$0$2m
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$0$500k

Asset held longer than 12 months?

Applies 50% CGT discount for Australian residents

CGT Estimate

Estimated CGT payable

$11,375

Capital gain $70,000
50% CGT discount −$35,000
Taxable gain $35,000
Marginal tax rate 32.5%
Effective rate on gain 16.25%
Net proceeds after CGT $108,625

How CGT is calculated in Australia

Capital Gains Tax is not a separate tax — it's part of your income tax. Your capital gain is added to your other income and taxed at your marginal rate.

  1. 1.Calculate the capital gain: sale price − cost base
  2. 2.Apply 50% discount if held more than 12 months
  3. 3.Add the discounted gain to your taxable income
  4. 4.Tax is payable at your marginal rate

The 50% CGT discount

Australian residents who hold an asset for more than 12 months are entitled to a 50% CGT discount. This means only half the capital gain is added to your taxable income — effectively halving your CGT.

Non-residents are generally not eligible for the 50% discount (except on certain pre-2012 assets). Superannuation funds receive a one-third discount instead of 50%. Companies do not receive any CGT discount.

CGT by marginal rate (2024–25)

Taxable Income Marginal Rate Effective CGT rate (with 50% disc.)
$0 – $18,2000%0%
$18,201 – $45,00019%9.5%
$45,001 – $135,00032.5%16.25%
$135,001 – $190,00037%18.5%
$190,001+45%22.5%

Effective CGT rates assume the full 50% discount is applied. Medicare levy (2%) is additional. Rates are for the 2024–25 financial year.

Frequently Asked Questions

What is the capital gains tax rate in Australia? +
Australia doesn't have a fixed CGT rate. Capital gains are added to your taxable income and taxed at your marginal rate (0%–45% for 2024–25). Assets held more than 12 months qualify for a 50% discount, so the effective CGT rate is half your marginal rate — up to 22.5% for the highest earners.
Do I pay CGT on my main residence? +
Generally no — your principal place of residence (main home) is exempt from CGT under the main residence exemption. The full exemption applies if you lived there the entire time you owned it and didn't use it to earn income. Partial exemptions apply if you rented part of it or temporarily rented it out.
Can I offset capital losses against capital gains? +
Yes. Capital losses offset gains in the same year. If your losses exceed gains, the excess carries forward to offset future gains — indefinitely. Losses cannot reduce other income like salary. The 50% discount applies after losses are deducted, so apply losses to the full gain before discounting.
When do I have to pay CGT? +
CGT is paid as part of your annual income tax return for the year the disposal occurred. If you sell in August 2024, the gain is included in your 2024–25 return (due 31 October 2025, or later if using a tax agent). PAYG instalments may apply if you have large gains.
Is the cost base just the purchase price? +
No — the cost base includes the purchase price plus associated costs: stamp duty, legal fees, agent commissions on purchase, and capital improvement costs (e.g., renovations). For shares, it includes brokerage on both purchase and sale. A higher cost base means a smaller capital gain and less CGT.

Disclaimer: This calculator provides estimates for general information purposes only based on 2024–25 ATO rates and does not constitute financial or tax advice. Results do not account for capital losses, cost base adjustments, the Medicare Levy Surcharge, foreign residents' rules, trust distributions, or other individual circumstances. Always consult a registered tax agent or accountant before making investment decisions.