Capital Gains Tax, or CGT, isn't a separate tax in Australia. It's simply a part of your regular income tax. You pay it on the profit you make when you dispose of an asset, like property or shares. Think of it as the government taxing the increase in an asset's value from the time you acquired it to the time you got rid of it.

The core idea is to tax all forms of economic gain, not just the salary you earn from a job. When an asset you own becomes more valuable and you realize that value by selling it, that profit is considered income for tax purposes.

A tax obligation is triggered by what the Australian Taxation Office (ATO) calls a 'CGT event'. The most common event is selling an asset. However, other events can trigger CGT, such as giving an asset away as a gift, losing it, or even if it's destroyed.

Many assets are subject to CGT if you acquired them on or after September 20, 1985. Common examples include:

• Real estate, like an investment property or holiday home
• Shares and units in managed funds
• Cryptocurrencies
• Collectibles (e.g., art, jewelry) if you paid over $500 for them
• Personal use assets (e.g., a boat) if you paid over $10,000 for them

Some important assets are exempt, most notably your main residence. Cars and depreciating assets used only for taxable purposes are also generally exempt from CGT.

To figure out your capital gain or loss, you need two key numbers: your capital proceeds and your cost base. The basic formula is straightforward.

Capital proceeds is the amount of money or the value of what you receive when the CGT event happens. Usually, it's the sale price.

The cost base is more than just the purchase price. It includes all the costs associated with acquiring, holding, and disposing of the asset. This can include stamp duty, legal fees, brokerage fees, and costs of capital improvements. Keeping good records of these expenses is crucial, as a higher cost base reduces your capital gain.

Once you've calculated the gains and losses for all your CGT events in a financial year, you can start to process them.

Your net capital gain is the final figure you add to your assessable income for the year. This total amount is then taxed at your marginal income tax rate. There is no special tax rate for capital gains; it's just treated as extra income you earned during the year.

One of the most significant concessions in the Australian CGT system is the 50% discount. If you're an individual and have held an asset for 12 months or more before the CGT event, you can reduce your capital gain by 50%. This discount is designed to encourage long-term investment.

What happens if you have a capital loss? You can't deduct a capital loss from your other income, like your salary. Instead, you must use it to offset capital gains.

If your capital losses for the year are greater than your capital gains, you have a net capital loss. You can't do anything with it in the current tax year, but you can carry it forward to future years. In a later year, when you have a capital gain, you can use your carried-forward loss to reduce that gain.