AU Capital Gains Tax Calculator 2026/27
Calculate your Australian capital gains tax liability. Enter the purchase and sale details of your asset to see the gross gain, 50% CGT discount (for assets held >12 months), net capital gain after losses, and the CGT payable at your marginal tax rate.
How Australian CGT works in 2026/27
Capital Gains Tax (CGT) is not a separate tax — the capital gain is added to your taxable income and taxed at your marginal rate. If you've held the asset for more than 12 months, you're eligible for a 50% CGT discount (individuals only), meaning only half the gain is taxed. The cost base includes the purchase price plus stamp duty, legal fees, improvement costs, and incidental costs of sale. Capital losses must be applied against capital gains first and can be carried forward indefinitely. The main residence exemption means no CGT is payable on the sale of your primary home.
2026/27 CGT rules: 50% discount for individuals holding >12 months. Main residence is CGT-exempt. Cost base = purchase price + acquisition costs + improvements. Capital losses offset gains and carry forward. Pre-CGT assets (before 20 Sept 1985) are exempt. Small business concessions available.
AU Capital Gains Tax Calculator 2026/27 — CGT with 50% Discount
Free Australian CGT calculator. Calculate capital gains tax with the 50% discount for assets held >12 months, cost base, and main residence exemption.
Capital Gain Waterfall
Cost Base Breakdown
Gain vs Tax
Understanding your CGT results
Gross Capital Gain is the difference between your sale proceeds and your total cost base (purchase price + acquisition costs + improvement costs + sale costs). If you held the asset for more than 12 months, the 50% CGT discount reduces the taxable gain by half — this is the key benefit of long-term investing in Australia. Capital losses from the current year and prior years are deducted from your gains before applying the discount (losses must be applied before the discount).
CGT Discount and Holding Period
The 50% CGT discount is available to Australian resident individuals who acquired the asset on or after 20 September 1985 and held it for at least 12 months before the CGT event. If you hold an asset for less than 12 months, the full gain is taxable at your marginal rate with no discount. For super funds the discount is 33.33%, and for companies no discount applies — but this calculator is for individuals.
Main Residence Exemption
Your primary home is generally exempt from CGT under the main residence exemption. If you checkbox is selected, the entire capital gain is treated as zero. There are special rules if the property was used for business, was rented out, or if the land exceeds 2 hectares. The 6-year absence rule may also apply if you moved out and rented the property.
Capital Losses
Capital losses from investments must be applied against capital gains in the same year. If your losses exceed your gains, the net loss can be carried forward indefinitely to offset future capital gains. Capital losses cannot offset other income (salary, business income, etc.). Losses are applied before the 50% CGT discount.