Capital gains tax in Australia

Capital gains tax (CGT) in Australia is the set of income-tax rules applying when a taxpayer makes a capital gain or loss from a CGT asset or another specified event. It is generally not a separate tax calculated at a single standalone rate: an individual’s net capital gain is included in assessable income and taxed under the applicable income-tax rules. The outcome depends on the asset, ownership period, taxpayer and available exemptions, losses and concessions. ^[1][2]

Framework and administration

Australia’s CGT rules are principally contained in the *Income Tax Assessment Act 1997*, including its provisions on capital gains, capital losses, discounts and exemptions. The Australian Taxation Office (ATO) administers the rules and publishes guidance for taxpayers. CGT is integrated with the broader income-tax system: taxpayers generally calculate their net capital gain for an income year and report it in their income-tax return. ^[1][2]

The term “CGT” can therefore be misleading if taken to mean a separate tax imposed only when an asset is sold. The rules form part of income tax, and a CGT event can occur in circumstances other than a conventional sale. Tax consequences are determined by applying the relevant statutory event, calculation rules and any available exemptions or rollovers. ^[1][3]

Assets and events covered

CGT may apply to a range of assets, including real estate, shares, units in managed investments and certain contractual or other rights. The ATO also identifies cryptocurrency held as an investment as potentially subject to CGT when disposed of. Some assets are exempt or receive special treatment; cars and motorcycles, for example, are generally exempt, while personal-use assets and collectables are subject to specific rules and thresholds. ^[4]

The statutory framework identifies different CGT events. Common examples include selling or giving away an asset, exchanging or swapping assets, an asset being lost or destroyed, and creating or ending certain rights. The type of event matters because it can determine when the gain or loss is taken to arise and how it is calculated. ^[3]

For a sale made under a contract, the CGT event generally occurs when the taxpayer enters into the contract, rather than on the later settlement date. If there is no contract, the event is generally associated with the time the taxpayer stops owning the asset. This timing can affect the income year in which the gain or loss must be reported. ^[3]

Calculating a capital gain or loss

A basic calculation compares the capital proceeds from a CGT event with the asset’s cost base. Capital proceeds are generally what the taxpayer receives, or is taken to receive, from the event. If an asset is given away or transferred for less than market value in specified circumstances, market value may be used instead of the amount received. A capital gain generally arises when the proceeds exceed the relevant cost base. A capital loss is calculated using the reduced cost base where the relevant event and rules call for it. ^[2][5]

The cost base is not limited to the original purchase price. In general, it can include five categories: money paid or property given to acquire the asset; certain incidental acquisition or disposal costs; certain costs of owning the asset; capital expenditure to increase or preserve its value or to install or move it; and capital expenditure to preserve or defend title or rights. A cost that has already been claimed, or is claimable, as a tax deduction is generally not also included in the cost base. ^[5]

The calculation can involve additional rules, including market-value substitutions, apportionment, foreign-currency conversion, and special treatment for particular asset types or events. Accordingly, a simple difference between a sale price and the original purchase price may not represent the taxable gain. ^[2][5]

Net capital gain and capital losses

The amount included in assessable income is generally the net capital gain for the income year, rather than the sum of every individual gain before adjustments. In broad terms, the calculation takes account of capital gains, allowable capital losses and any applicable discount. A net capital loss is not generally deductible against salary or other ordinary income; it can instead be carried forward to reduce capital gains in a later income year, subject to the rules applying to the taxpayer and asset. ^[2][6]

Current-year capital losses are applied against current-year gains. The ATO says taxpayers should generally apply losses first against gains that are not eligible for the CGT discount, before applying them to discount-eligible gains. Allowable net capital losses from earlier years can also be used against current-year gains, and can be carried forward without a general time limit. Losses from certain assets, including personal-use assets, are not allowable against other capital gains; collectable losses are generally restricted to gains from collectables. ^[6]

CGT discount

An eligible Australian-resident individual may generally reduce a capital gain by 50% if the asset has been owned for at least 12 months before the relevant CGT event. The discount is applied as part of calculating the net capital gain; it does not mean that the taxpayer pays tax at a 50% rate. If a sale is governed by a contract, the contract date is generally the event date for determining whether the ownership period requirement has been met. ^[7]

The discount is not available in every case. Eligibility depends on the taxpayer and asset, and rules restrict or exclude it for some entities and circumstances. Foreign and temporary residents generally cannot claim the full discount for gains accruing after 8 May 2012, though specific transitional or apportionment rules may apply. The discount is also distinct from the cost-base indexation method that may be available for certain assets acquired before 21 September 1999; the applicable rules determine which method can be used. ^[7][2]

Main residence and other exemptions

A dwelling used as a taxpayer’s main residence may qualify for a full or partial exemption. The general exemption depends on statutory conditions, including the taxpayer’s circumstances, the period the dwelling was their home, whether it was used to produce income, and the land area. A home that is rented out or used partly for business may not qualify for a full exemption, although a partial exemption may be available. Vacant land by itself does not qualify as a main residence. ^[8]

The exemption has detailed rules for circumstances such as moving out, owning more than one dwelling, relationship breakdowns, inherited property and changes in tax residency. The ATO notes that a foreign resident at the time of a CGT event involving Australian residential property may not be entitled to claim the main-residence exemption. The result depends on the particular facts and statutory requirements. ^[8][9]

Other exemptions and special rules apply to specified assets and transactions. For example, assets acquired before 20 September 1985 are generally outside CGT, though later improvements or additions can be treated differently. Some personal-use assets, vehicles and collectables also have distinct rules. These exceptions do not necessarily extend to all assets held by the same taxpayer or to every disposal. ^[4]

Property, foreign residents and withholding

Real estate—including rental properties, business premises, holiday houses and vacant land—is commonly within the CGT system, subject to exemptions and other rules. Australian residents disposing of property may need an ATO clearance certificate to prevent an amount being withheld from the transaction under the foreign resident capital gains withholding system. This withholding is a collection mechanism; it is not, by itself, the final calculation of the seller’s CGT liability. ^[4][9]

Foreign residents may be subject to Australian CGT on taxable Australian property, including specified interests in Australian real property and certain indirect interests. Residency status for tax purposes and the nature of the asset are relevant. Separate rules govern withholding from certain property transactions, and eligibility for the main-residence exemption and CGT discount can differ from the rules applying to Australian-resident individuals. ^[9][10]

Reporting and records

A taxpayer who has a CGT event should determine whether it produced a gain, loss, exemption or rollover and include relevant information in the income-tax return where required. Supporting records can include contracts, purchase documents, settlement statements, records of eligible improvements and incidental costs, and documents showing how an asset was used. Records help establish acquisition and event dates, proceeds, cost base, ownership periods and the basis for claiming an exemption or discount. The ATO provides calculators and record-keeping tools, but complex events and ownership structures may involve additional rules. ^[2][5]

The CGT outcome is therefore specific to the asset, event, taxpayer and income year. The statutory legislation takes precedence over general summaries, and ATO guidance explains how the authority administers the rules. ^[1][2]