Free Property Investment Tool
CGT Method Comparison Calculator | Old vs New Rules 2026
Compare the existing 50% CGT discount method against the new 2026 Budget inflation-adjusted model for Australian investment properties. See which method produces the lower tax outcome for your situation.
How to Use This Calculator
- Enter your property purchase year and purchase price
- Enter your expected sale price and sale year
- Add your marginal tax rate
- Compare both CGT methods side by side and see which saves you more
Frequently Asked Questions
Which CGT method is better — the 50% discount or inflation-adjusted?
It depends on how long you held the property and inflation rates during that period. Properties held for many years in high-inflation periods may benefit from the inflation-adjusted model. Our calculator compares both methods automatically.
Who can use the new CGT inflation-adjusted model?
The new model applies to newly acquired established residential properties from 1 July 2027. You can elect whichever model produces the lower CGT at sale.
Does this affect existing properties?
Properties purchased before 12 May 2026 are expected to be grandfathered under existing rules. The new model applies to new acquisitions from Budget night.
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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