Capital Gains Tax Calculator (Australia)
Estimate your CGT on an investment property sale using 2025-26 resident tax brackets.
Capital gains tax calculator
Estimate CGT using the discount, indexation, or the new Post 12 May 2026 (Budget 2026-27) method. The reform replaces the 50% CGT discount with full CPI cost-base indexation plus a 30% minimum tax on real gains for individuals, trusts and partnerships from 1 July 2027. Legacy indexation remains available for assets acquired before 21 September 1999. Uses legislated 2026-27 resident tax rates.
IMPORTANT DISCLAIMER
This calculator is provided for general information and operational support only. It does not constitute legal, tax, accounting, financial product, credit, lending, investment, superannuation or valuation advice.
This calculator does not constitute:
- Legal advice
- Tax advice
- Accounting advice
- Financial product advice
- Credit assistance
- Lending advice
- Investment advice
- Superannuation advice
- Valuation advice
Results are indicative only. Outputs depend entirely on information entered by users and the assumptions selected. Users must independently verify every calculation before relying upon it. Professional advice should be obtained where appropriate.
- Cost base
- $545,000
- Indexation factor (Sep 1999 CPI ÷ acquisition CPI)
- 1.020
- Indexed cost base
- $555,411
- Indexed gain
- $394,589
- Nominal capital gain
- $405,000
- Method used
- discount
- Discount applied
- 50%
- Assessable (taxable) gain
- $202,500
- Income tax on other income only
- $21,188
- Income tax with the gain included
- $105,963
- Estimated CGT payable
- $84,775
- Effective rate on gain
- 20.93%
IMPORTANT DISCLAIMER
This calculator is provided for general information and operational support only. It does not constitute legal, tax, accounting, financial product, credit, lending, investment, superannuation or valuation advice.
This calculator does not constitute:
- Legal advice
- Tax advice
- Accounting advice
- Financial product advice
- Credit assistance
- Lending advice
- Investment advice
- Superannuation advice
- Valuation advice
Results are indicative only. Outputs depend entirely on information entered by users and the assumptions selected. Users must independently verify every calculation before relying upon it. Professional advice should be obtained where appropriate.