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A free Australian capital gains tax calculator your readers can use without leaving your page — ideal for accountants, brokers and finance blogs. One iframe, nothing to maintain. Now includes a widget already correct for the CGT rules starting 1 July 2027.
Copy the snippet into your page and the calculator loads there, for every visitor you have.
The widget runs the same calculations as the calculators here, so its tax brackets are checked against ATO sources with them and it moves to the new financial year on its own.
Paste both parts — the credit line under the frame stays — and keep the disclaimer under the result intact. That's the whole licence.
Exactly what your visitors see, on your page.
Capital gains tax calculator — Australia 2026–27
The 50% CGT discount changes from 1 July 2027 — what changes
Estimated CGT payable including Medicare levy
$800
This calculator exists to show you the arithmetic. It applies published Australian rates, thresholds and formulas to the numbers you enter and shows the working, so you can check it. That is all it does — it produces a number and describes what the number is. It does not recommend anything and it holds no opinion about any financial product.
Assumptions: Australian resident individual, selling today under 2026–27 rates. Enter the cost base and proceeds, with other taxable income excluding this gain. The holding switch selects discount eligibility; it does not check your actual acquisition date.
Why these defaults: The starting amounts are editable illustrations of a gain, rather than typical prices or a forecast. The tax year follows the current financial year so an immediate sale uses that year's published schedule.
What can move this estimate
This calculator is not intended to be relied on for the purposes of making a decision in relation to a financial product. Before you make a financial decision, consider obtaining advice from someone who holds an Australian Financial Services Licence. We do not, and we cannot advise you.
Estimate only, for Australian resident individuals. Factual information — not financial product advice or tax advice, and not to be relied on for a decision about a financial product. Oz Finance Hub holds no AFSL and is not a registered tax agent. Assumptions and full disclaimer.
Copy both parts anywhere HTML is allowed — posts, sidebars, resource pages. The credit line under the frame is the attribution.
<iframe
src="https://ozfinancehub.com.au/widgets/cgt"
width="100%"
height="640"
style="border: 0; max-width: 480px"
title="Australian capital gains tax calculator"
loading="lazy"></iframe>
<p style="max-width: 480px; font-size: 12px">
Capital gains tax calculator by
<a href="https://ozfinancehub.com.au/tools/investments/capital-gains">Oz Finance Hub</a>
</p>Want a different calculator as a widget — take-home pay, franking credits, stamp duty? Tell us and we’ll build it.
The widget provides factual information and arithmetic — not financial product advice, tax advice or personal advice. Free to embed on any website provided the attribution line in the snippet and the disclaimer inside the widget both remain visible and unmodified. You must not remove or obscure either, and you must not present the calculator as your own advice tool or as the output of a licensed adviser.
From 1 July 2027, the general 50% CGT discount ends for post-reset growth on ordinary assets. Growth up to 30 June 2027 can keep the discount when the real sale meets the 12-month test. CPI indexation and a possible 30% minimum-tax top-up also apply. Some residential-asset discounts and other statutory exceptions continue. Most calculators (including our own original CGT widget above) don’t model the new rules yet. This one does.
Exactly what your visitors see, on your page.
CGT calculator: new rules from 1 July 2027
Scenario: bought the day the new rules start, sold N years later.
Resolving CPI for these assumptions…
This calculator exists to show you the arithmetic. It applies published Australian rates, thresholds and formulas to the numbers you enter and shows the working, so you can check it. That is all it does — it produces a number and describes what the number is. It does not recommend anything and it holds no opinion about any financial product.
Assumptions: Australian resident individual buying on 1 July 2027, with no special asset election, income-support payment or capital losses. Future tax uses 2027–28 resident rates held unchanged; future income tax schedules may differ. Future CPI is projected using your inflation input where a published index is unavailable.
Why these defaults: The starting amounts and holding period are editable illustrations. The inflation starting point is the generic-calculator present-value default in ASIC Instrument 2026/41 s6, used as an editable scenario for future CPI rather than a prediction of CPI.
What can move this estimate
This calculator is not intended to be relied on for the purposes of making a decision in relation to a financial product. Before you make a financial decision, consider obtaining advice from someone who holds an Australian Financial Services Licence. We do not, and we cannot advise you.
Assumes 2.5% annual inflation for CPI indexation (not yet published for a future quarter) — an assumption, not a forecast. Estimate only, for Australian resident individuals. Factual information — not financial product advice or tax advice, and not to be relied on for a decision about a financial product. Oz Finance Hub holds no AFSL and is not a registered tax agent. Assumptions and full disclaimer.
Copy both parts anywhere HTML is allowed — posts, sidebars, resource pages. The credit line under the frame is the attribution.
<iframe
src="https://ozfinancehub.com.au/widgets/cgt-reform"
width="100%"
height="700"
style="border: 0; max-width: 480px"
title="Australian CGT calculator — 2027 new rules"
loading="lazy"></iframe>
<p style="max-width: 480px; font-size: 12px">
CGT calculator for the 2027 rules by
<a href="https://ozfinancehub.com.au/tools/investments/cgt-reform-calculator">Oz Finance Hub</a>
</p>The widget provides factual information and arithmetic — not financial product advice, tax advice or personal advice. Free to embed on any website provided the attribution line in the snippet and the disclaimer inside the widget both remain visible and unmodified. You must not remove or obscure either, and you must not present the calculator as your own advice tool or as the output of a licensed adviser.