Australia Capital Gains Tax Calculator
Estimate capital gains tax in Australia using holding period, income bracket, and country-specific rules.
Example: A$100,000 to A$180,000 in Australia
Capital gain
A$80,000
Tax amount
A$13,000
Net after tax
A$167,000
Effective rate on gain
16.25%
On this sample scenario, estimated tax is A$13,000 and net proceeds are A$167,000.
Source: FinCalc server-rendered example using the same formulas as the interactive calculator.
Inputs
Results
Estimated capital gains tax is A$13,000 on a gain of A$80,000.
Capital gain
A$80,000
Taxable gain
A$40,000
Tax amount
A$13,000
Net after tax
A$167,000
Applied rate
32.50%
Effective rate on gain
16.25%
| Line item | Amount | Rate |
|---|---|---|
| Purchase price | -A$100,000 | — |
| Sale price | A$180,000 | — |
| Capital gain | A$80,000 | — |
| Australia 50% long-term discount | -A$40,000 | — |
| Australia marginal tax on taxable gain | A$40,000 | 32.50% |
| Tax amount | A$13,000 | 16.25% |
| Net proceeds after tax | A$167,000 | — |
How the Australia calculation works
Australia mode taxes the gain at a marginal rate the model sets at 19%, 32.5% or 45% for the low, middle and high brackets, and halves the gain first when you select Long-term. The page example buys at A$100,000 and sells at A$180,000, an A$80,000 gain. Long-term at the middle bracket discounts that to A$40,000, taxes it at 32.5% for A$13,000, and reports an effective rate on the gain of 16.25%, half the marginal rate. The identical sale marked Short-term is taxed on the full A$80,000 and costs A$26,000, exactly double. The 50% discount is the only reduction the model applies to a gain.
What the model includes
- The 50% discount applied to gains marked long-term
- Marginal rates of 19%, 32.5% and 45% by income bracket
- Short-term gains taxed at the marginal rate with no discount
- Taxable gain, tax amount, net proceeds and the effective rate on the gain
What it leaves out
- Any holding-period test, since Long-term is a setting rather than a date check
- Cost base adjustments: purchase and sale costs, holding costs and improvements
- Capital losses and exemptions
- Asset type, which does not change an Australian result
- Levies and offsets applied elsewhere in an assessment
Methodology and assumptions
This calculator estimates capital gains tax for Australia using 2026 assumptions.
Australia mode applies a 50% discount for long-term holdings and taxes taxable gain at income-bracket rates.
Core structure: capital gain = sale price - purchase price. Tax is then applied to taxable gain at the modeled country rate.
Results are planning estimates and can differ from filed tax due to deductions, offsets, allowances, provincial/state rules, and exact filing context.
Data source: Australian Taxation Office (https://www.ato.gov.au).
For cross-checking assumptions, review the country notes and effective rates shown in the result table.
Displayed rates are expressed as percentages (e.g. 20.00% for 20%).
- Long-term gains often qualify for a 50% discount for individuals.
- Short-term gains are usually taxed at marginal rates without discount.
Australia capital gains tax FAQ
What does the Long-term setting actually do?
It halves the gain before the rate is applied. On the page's A$80,000 example, choosing Long-term reduces the taxable gain to A$40,000, and the middle-bracket rate of 32.5% is applied to that, giving A$13,000. The identical sale left on Short-term is taxed on the whole A$80,000 and costs A$26,000. The discount is the only deduction the model makes.
How long must I hold an asset to get the discount?
The calculator does not decide that for you. It has no date fields and no holding-period threshold in its data. Long-term is a switch you set, and the model trusts it. The data file records only that long-term gains often qualify for a 50% discount for individuals, and that short-term gains are usually taxed at marginal rates without one. Confirm your eligibility before relying on the discounted figure.
Which marginal rates does the model use?
19% for the low bracket, 32.5% for middle and 45% for high. After the 50% discount those work out to effective rates on the gain of 9.50%, 16.25% and 22.50%, always half the marginal rate. Without the discount the effective rate equals the marginal rate. The page's A$13,000 estimate is the discounted middle-bracket case at 16.25%.
What is not taken off the gain?
Everything except the discount. Purchase and sale costs, holding costs, improvements, capital losses and any exemption are all outside the model, and the General asset and Residential property switch does not change the result. The cost base is exactly the purchase price you type in, so raise that figure yourself if your real cost base is higher than the price you paid.
Why is the net after tax figure larger than my profit?
Because it is the sale price minus tax, not the gain minus tax. The A$167,000 on the example is A$180,000 of proceeds less A$13,000 of tax, and it still includes the A$100,000 you paid for the asset. The profit you keep after tax in that scenario is A$67,000. The 16.25% effective rate is measured against the gain, not against the sale price.
When is this least reliable?
When the gain itself changes your bracket. This model asks only which of three brackets you are in and applies that one rate to the whole taxable amount, rather than adding the discounted gain to your income. Between the middle and high settings the same A$40,000 taxable gain costs A$13,000 or A$18,000, and a case that straddles the two falls between them.
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