Real ATO CPI data. Correct transitional rules. Model your investment property or shares under the 2027 indexation regime in under a minute.
Fill in your details and results update in real time. Uses the ATO apportionment formula and actual ATO CPI index data.
Don't know what your asset will be worth at sale? Use historical average growth to project a sale price, or enter your own assumption.
CPI is applied as compound annual inflation across the entire holding period. A 4.5% rate over 20 years means cost base × 1.045²⁰ = +141%.
Fill in your details and results appear here.
Six things every investor needs to understand before 1 July 2027.
Your cost base is uplifted by inflation over the time held. Only the gain above CPI is taxed. This is how CGT worked between 1985 and 1999.
Even if your marginal rate is below 30%, a floor applies to real post-2027 gains. Doesn't affect most working investors already taxed above 30%.
New build investors choose whichever method is lower at time of sale. New builds also retain full negative gearing regardless of purchase date.
Assets bought before 1 Jul 2027 are split at that date using the ATO's apportionment formula. Pre-2027 gains use 50% discount; post-2027 gains use indexation.
Main residence exemption, SMSFs and super funds, small business CGT concessions (all four retained), and the 60% affordable housing discount are all unaffected.
Only when you sell after 1 Jul 2027. No impact on unrealised gains or properties you continue to hold. The tax is only realised at disposal.
Sources: Budget 2026-27 · Treasury · ATO
We'll email you a plain-English guide covering grandfathering rules, new build opportunities, and how to model the 2027 changes across your whole portfolio.
No spam. Unsubscribe anytime. outbackinvestor.com
Check your inbox. Welcome to Outback Investor.