Free Capital Gains Tax Calculator Australia (2026-27)
This capital gains tax calculator estimates the CGT on selling a property, shares or other assets, including the 50% discount for assets held 12 months or more.
Capital gains tax calculator examples (held over 12 months)
| Other income | Gain | CGT | Share of gain |
|---|---|---|---|
| $60,000 | $50,000 | $8,100.00 | 16.2% |
| $90,000 | $100,000 | $16,350.00 | 16.4% |
| $150,000 | $100,000 | $20,300.00 | 20.3% |
| $90,000 | $250,000 | $47,600.00 | 19% |
Capital gains tax changes from 1 July 2027
The Treasury Laws Amendment (Tax Reform No. 1) Act 2026 is law. For gains that accrue from 1 July 2027, individuals will use cost base indexation (adjusting the cost for inflation) instead of the 50% discount, with a 30% minimum tax. Assets you already own will be split: the 50% discount applies to the gain up to 1 July 2027 and the new rules to the gain after it. This calculator covers sales in 2026-27.
Frequently asked questions
How does this capital gains tax calculator work?
It works out your capital gain (sale price less cost base), halves it if you owned the asset for 12 months or more, adds it to your other income and calculates the extra tax at the 2026-27 resident rates plus the Medicare levy.
Is capital gains tax changing in Australia?
Yes. From 1 July 2027 the 50% CGT discount for individuals is replaced by cost base indexation and a 30% minimum tax on capital gains that accrue from that date. Gains made up to 30 June 2027 keep the current rules.
Do I pay capital gains tax on my home?
Generally no: your main residence is usually exempt. The exemption can be partial if you rented it out or used it for business.
How is capital gains tax calculated in Australia?
Take the sale price, subtract the cost base (purchase price plus costs such as stamp duty and agent fees) to get the capital gain. If you held the asset for more than 12 months, individuals halve the gain. The result is added to your taxable income and taxed at your marginal rate.