How the Two CGT Methods Compare
Capital gains tax is changing, and the new model has more moving parts than most investors expect. As a result, many property owners are caught off guard when they see the numbers side by side. This calculator lets you enter your property details and compare the current 50% CGT discount against the proposed cost-base indexation approach. That way, you can see the shape of the change before you sit down with your accountant. You can also use our Investment Property Tax Reform Guide to understand which rules apply to your situation first.
Federal Budget 2026-27
Investment Property CGT Comparison Calculator
A simple way to compare the current 50% CGT discount with the proposed indexation and minimum tax approach.
Illustrative result
Important note: This calculator is for general education only. It uses simplified assumptions and does not account for purchase costs, selling costs, capital works, depreciation, ownership structure, Medicare levy, tax offsets, losses, land tax, individual circumstances or final legislation. It should not be relied on as financial, legal or taxation advice. Please speak with your accountant or tax professional before making decisions.
Source: Budget Paper No. 1, Statement 4. The proposed reforms include replacing the 50% CGT discount with cost-base indexation from 1 July 2027, introducing a 30% minimum tax on real capital gains, and allowing new-build investors to choose between the 50% discount or indexation/minimum tax when they sell.
The numbers this tool produces are illustrative, not tax advice. Your accountant will have the full picture. If you would like to talk through what this might mean for your property, reach out to our property management team.