Free Property Investment Tool
1 July 2027 Property CGT Calculator Australia
Estimate how the CGT rules commencing 1 July 2027 may affect your property. Properties held across 1 July 2027 may require the gain to be separated into a pre-2027 component and a post-2027 component, with different treatment applying to each period, including eligible indexation where applicable.
How to Use This Calculator
- Enter your property purchase price and sale price
- Add any capital improvements and selling costs to your cost base
- Select your marginal tax rate and how long you held the property
- See your estimated CGT liability, net gain, and effective tax rate
Frequently Asked Questions
How is CGT calculated on investment property in Australia?
CGT is calculated on the difference between your sale price and cost base (purchase price + costs + improvements). If held over 12 months, a 50% discount applies. The net gain is added to your taxable income for that year.
Does depreciation affect my CGT cost base?
Yes. Division 43 (capital works) deductions claimed over the years reduce your CGT cost base, which increases your capital gain. A quantity surveyor can prepare a cost base report to accurately reconstruct your figures.
What changes from 1 July 2027?
For properties held across 1 July 2027, the capital gain may need to be separated into a pre-2027 component and a post-2027 component, with different treatment applying to each period, including eligible indexation where applicable. Our calculator estimates both components.
Can I reduce my CGT with a cost base report?
Yes. A CGT Cost Base Evidence Report from Koste reconstructs renovation and improvement costs using quantity surveying methodology — reducing your capital gain and potentially saving thousands in tax.
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Need a Professional Report?
This calculator provides estimates. For ATO-compliant tax depreciation schedules accepted by all accounting firms, order a professional report from Koste — from $695+GST, delivered in 5 business days.
Results are estimates only and do not constitute financial or tax advice. Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai