Australia CGT Calculator 2024-25
Calculate Australian capital gains tax with the 50% CGT discount for assets held over 12 months. Includes main residence exemption and small business concessions.
A$
Proceeds minus cost base (including transaction costs) A$
Salary, business income, etc. before CGT A$
Applied before the 50% discount A$0
CGT Due
A$0
CGT Discount (50%)
A$0
Net Taxable Gain
0%
Effective CGT Rate
CGT Calculation Breakdown
How to Use This Australia CGT Calculator
Enter your capital gain (proceeds minus the cost base of the asset, including purchase costs, improvement costs and disposal costs). Select whether you held the asset for 12 months or more to qualify for the 50% CGT discount. Enter your other income so CGT can be calculated at your correct marginal rate.
Capital losses are applied before the 50% discount to maximise the benefit of the discount.
The Formula
Net Gain Before Discount = Capital Gain β Capital Losses
CGT Discount (if held 12+ months) = Net Gain Γ 50%
Taxable Gain = Net Gain β Discount
Total Taxable Income = Other Income + Taxable Gain
CGT Due = Marginal Tax on (Other Income + Taxable Gain) β Marginal Tax on Other Income
Medicare Levy = Taxable Gain Γ 2%
CGT Discount (if held 12+ months) = Net Gain Γ 50%
Taxable Gain = Net Gain β Discount
Total Taxable Income = Other Income + Taxable Gain
CGT Due = Marginal Tax on (Other Income + Taxable Gain) β Marginal Tax on Other Income
Medicare Levy = Taxable Gain Γ 2%
Example
Lisa, $70,000 other income, $60,000 gain on shares held 3 years, 2024-25:
Net gain: $60,000 (no losses)
CGT discount: $60,000 Γ 50% = $30,000
Taxable gain: $30,000
Total income: $70,000 + $30,000 = $100,000
Marginal rate on gain: 32.5%
CGT + Medicare: $30,000 Γ (32.5% + 2%) = $10,350
Without discount it would be: $60,000 Γ 34.5% = $20,700
Discount saves: A$10,350
Net gain: $60,000 (no losses)
CGT discount: $60,000 Γ 50% = $30,000
Taxable gain: $30,000
Total income: $70,000 + $30,000 = $100,000
Marginal rate on gain: 32.5%
CGT + Medicare: $30,000 Γ (32.5% + 2%) = $10,350
Without discount it would be: $60,000 Γ 34.5% = $20,700
Discount saves: A$10,350
Extended
CGT Discount Comparison
Compare short-term vs long-term CGT and the impact of the 50% discount at different income levels
Compare the tax impact of the 50% CGT discount versus no discount across different income levels and gain sizes.
Short-Term vs Long-Term CGT Comparison (A$50,000 Gain)
| Other Income | Short-Term CGT (No Discount) | Long-Term CGT (50% Discount) | Discount Saving |
|---|
CGT at Different Gain Sizes (Other Income: A$70,000, Held 12+ months)
| Capital Gain | After Discount | Marginal Rate | CGT Due | Effective Rate on Gain |
|---|
Frequently Asked Questions
How does the 50% CGT discount work in Australia?
If you hold an asset for more than 12 months before selling it, you are entitled to a 50% CGT discount. This means only half of your capital gain is included in your assessable income and taxed at your marginal rate. For example, a $60,000 gain on an asset held for 2 years becomes a $30,000 taxable gain. Superannuation funds receive a one-third discount instead of 50%.
What assets are subject to CGT in Australia?
CGT applies to assets acquired after 20 September 1985. Common CGT assets include shares, managed funds, investment properties, cryptocurrency, collectibles over $500, personal use assets over $10,000, and foreign currency. Your main residence is generally CGT-exempt. Cars, motorcycles and personal use assets under $10,000 are also exempt.
What is the main residence CGT exemption?
Your main residence (the home you live in) is generally fully exempt from CGT when you sell it. The exemption applies if the property was your main residence throughout your entire ownership, the land is 2 hectares or less, and it was not used to produce income. Partial exemptions apply if you rented out part of the home, used it for business, or it was only your main residence for part of ownership.
Can I offset capital losses against capital gains in Australia?
Yes. Capital losses must first be used to offset capital gains in the same income year. Any remaining capital losses are carried forward indefinitely and used against future capital gains. You cannot offset capital losses against ordinary income. Net capital losses carried forward must be used before the 50% discount is applied to any remaining gains.
What are the small business CGT concessions?
Australian small businesses (turnover under $2 million or net assets under $6 million) may qualify for generous CGT concessions: 15-year exemption (full exemption after 15 years), 50% active asset reduction, retirement exemption (up to $500,000 lifetime), and rollover relief. These can reduce or eliminate CGT on the sale of a small business and require specific eligibility conditions.