Capital Gains Tax Calculator
Before and after 1 July 2027.
From 1 July 2027 the 50% capital gains discount on shares, ETFs and managed funds goes. Anything you already hold is treated as sold and bought back at its value on 30 June 2027, so the gain up to then keeps the discount whenever you sell. The growth after that date is taxed differently: the cost base is indexed to CPI, and the tax on that part of the gain can never be less than 30%.
The 30% is a top-up, not a flat rate, which means it lands hardest on people whose other income is low. That is the early retiree selling a parcel each year to live on. Enter a portfolio and see the tax on selling it all before the cutover, selling it all later, and drawing it down year by year.
- No sign-up needed
- Australian tax rules, year by year
- Free to try
Your portfolio
Today's dollars, indexed with inflation.
Taxable, per year, before the gain.
Tax on the way out
What the calculator shows
Three sales of the same parcel: everything sold on 30 June 2027, the last day of the old rules; everything sold in the year you choose under the new rules; and that same later sale as the old rules would have taxed it, so the law change is separated from the growth. Below them, the drawdown: a slice sold each financial year, indexed with inflation, with the tax under both rule sets and the top-up shown on its own. The headline is the difference in today's dollars. Every figure is computed on the server from the enacted rules; nothing here is a rule of thumb.
How the new rules work
- The deemed sale. On 30 June 2027 you are taken to have sold and re-bought at market value. The gain to that date is deferred, not taxed, and keeps the 50% discount when you do sell.
- Indexation. Your new cost base from 1 July 2027 is indexed to CPI up to the quarter you sell, so inflation is taken out of the gain before it is taxed.
- The 30% minimum. The Tax Office works out the ordinary tax on the post-2027 gain; if it is under 30% of that gain, you pay the difference as a top-up. Above the 30% bracket nothing changes.
No need to sell before 1 July 2027
The deemed sale preserves the pre-cutover gain and its 50% discount for as long as you hold the asset, and the 12-month rule keeps counting from the day you actually bought. Selling early brings the tax forward and gives up the growth on the money you paid it with, to protect a discount you were going to keep anyway. Where the new rules do cost more is the growth after the cutover on a low income, and the calculator shows how much: the top-up column is the difference the 30% minimum makes, year by year.
Inside super vs outside super
Super is outside the new regime. A fund in accumulation phase keeps its one-third discount on assets held over 12 months, so 10% on the gain, and in retirement phase pays nothing. Growth assets you expect to sell down after preservation age are still cheapest inside super; the trade-off is the bridge years before you can reach it, which is what the outside-super portfolio above is for. Rebalancing with new contributions and distributions, rather than by selling, keeps the gain unrealised and the top-up unpaid.
What it deliberately leaves out
Property, which carries the rental loss quarantine as well and is modelled on your own plan in the full calculator. Trusts, companies and self-managed super funds. Losses on other assets in the same year. And the low income tax offset and Medicare levy reduction, which is why the ordinary-tax figures are approximate below about $70,000 of income.