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What is Capital Gains Tax (CGT)?

What is Capital Gains Tax (CGT)?

Capital Gains Tax (CGT) is one of that all property investors need to understand or ensure their accountant is across.

While CGT may seem overwhelming, once you get across a few points, it will come together easily. In this article, we discuss CGT, including how to calculate it.

CGT Definition

The CGT is essentially a tax that you need to pay on any “gains” you make from the sale of an asset. This applies to all classes of assets, including property, shares, leases, goodwill, licenses, foreign currency, contractual rights and personal assets purchased for more than $10,000.

CGT Exemptions

Whilst there are a key number of exemptions, you need to double check accordingly. The exemptions to CGT are your primary place of residence, car and depreciating assets used solely for taxable purposes and any other assets purchased

before 20 September 1985. If your primary residence is on more than two hectares or you haven’t lived in it for the entire period you’ve owned the asset, you will only be entitled to a partial CGT exemption.

CGT Costs

CGT isn’t a simple tax. The difference between your capital gain and capital loss forms part of your taxable income for that financial year. Assets sold through a business pay 3 percent on capital gains, while SMSFs can apply a 33.3 percent discount along with 15 percent on the remainder of the gains.

CGT Calculation

Your capital gain is added to your taxable income if you buy a property and sell it within 12 months of the purchase date. If held longer than 12 months, there are two methods to calculate CGT — discount and indexation. Individuals can pick the calculation method, which leads to the lowest capital gain.

CGT discount method

Australian residents who have owned their property for more than 12 months are eligible for a 50 per cent discount on the capital gain.

Indexation method

If you purchased a property before 21 September 1999 and you’re an Australian resident, you could use the indexation method to calculate the capital gain. The indexation method applies a multiplier to your initial outlay in purchasing the property, which increases your purchase price into “today’s price” and reduces your capital gain.


If you purchased a property for $200,000 in August 1990 and sold it for $500,000 in March 2020, you’ll need to work out the CPI in the third quarter of 1999 and divide it by the CPI for the third quarter of 1990. You can only index your cost base up to 30 September 1999. In this case, the calculation would be 68.7/57.5 = 1.195. You then need to work out your inflation-adjusted price, which would be $200,000 multiplied by 1.195, which gives you a purchase price of $239,000. Your capital gain would be $5000,000 less the $239,000 inflation-adjusted price, which is $261,000. Therefore, you’d need to add a $261,000 capital gain to your financial year for 2020.

What about capital losses?

If you make a loss on the sale of an asset, you can carry over the loss to reduce your CGT obligation in future income years. It’s important to note that you can’t subtract a capital loss from your taxable income. You can only carry it forward to reduce future capital gains. The ATO doesn’t impose a limit on how far you carry forward net capital losses.

If you’re unsure about your capital gains position and the most tax-effective way to structure asset purchases and sales, make sure you speak to your accountant to clarify your tax obligations.

Remember, this article does not constitute financial or legal advice.

Please consult your professional financial and legal advisors before making any decisions for yourself.


Western Plains Real Estate

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