Highlights

  • Capital gains tax (CGT) applies to profits made when selling assets such as shares, ETFs, crypto assets and investment properties.
  • The government has announced changes to CGT that are scheduled to begin from 1 July 2027.
  • The current 50% CGT discount will be replaced by an inflation-based system alongside a minimum 30% tax on gains.
  • The changes will only apply to gains made after July 2027.
  • Understanding CGT can help investors make more informed decisions when building wealth.

Most people focus on the income they earn through salaries or wages, but wealth can also grow through investments. Whether it is shares, ETFs, managed funds or investment properties, the profit you make when selling an asset may attract capital gains tax, commonly known as CGT.

Although CGT has existed in Australia for more than four decades, it has returned to the spotlight in 2026 after the government announced significant changes that are expected to come into effect from July 2027. Understanding how CGT works can help everyday Australians better manage their investments and avoid surprises at tax time.

What Is Capital Gains Tax?

Capital gains tax is the tax that may apply when you sell an asset for more than you originally paid for it. Despite its name, CGT is not a separate tax. Instead, the profit you make is generally added to your taxable income and taxed according to your marginal tax rate.

CGT commonly applies to:

  • Shares and ETFs.
  • Managed funds.
  • Investment properties.
  • Cryptocurrency and digital assets.
  • Other investments that increase in value over time.

For most Australians, the family home is generally exempt from CGT, provided certain conditions are met.

The tax is usually triggered when a "CGT event" occurs, with selling an asset being the most common example.

Why Was Capital Gains Tax Introduced?

Australia introduced CGT in 1985 to create a fairer tax system.

Before that, people could structure their earnings in ways that allowed them to pay less tax. For example, someone might receive shares instead of a cash bonus and later sell those shares, potentially benefiting from lower taxes compared with receiving wages directly.

Introducing CGT helped ensure that profits generated from investments were taxed more consistently with regular income.

In announcing the upcoming changes, the government has argued that the reforms aim to better align taxes paid on capital gains with taxes paid on wages.

How Has CGT Changed Over Time?

When CGT was first introduced in 1985, the system accounted for inflation. This meant investors were taxed only on the "real" increase in value rather than the entire price rise.

In 1999, Australia simplified the system by introducing the 50% CGT discount. Individuals who held an asset for at least 12 months generally paid tax on only half of their capital gain.

This discount became one of the most debated features of Australia's tax system, particularly because of its impact on investment properties and housing affordability.

Now, the government plans to move back toward an inflation-based approach from July 2027.

What Changes Have Been Announced?

Under the measures announced in the 2026-27 Budget, the current 50% CGT discount will be replaced by an inflation-based discount.

A minimum 30% tax on gains will also be introduced.

Importantly, these changes will only apply to gains arising after 1 July 2027. Existing investments will not immediately lose access to the current arrangements.

Investors in newly built homes will reportedly have the option of choosing between the existing 50% discount and the new inflation-based approach.

The final outcome, however, will depend on legislation and individual circumstances.

What Does an Inflation-Based Discount Mean?

An inflation-based system aims to tax the "real" profit made on an investment.

Suppose you purchased shares for AUD 10,000 and later sold them for AUD 18,000.

At first glance, your profit appears to be AUD 8,000.

However, if inflation during that period was 20%, the purchasing power of money has changed. An inflation adjustment could increase the original cost base to AUD 12,000, reducing the taxable gain to AUD 6,000 instead of AUD 8,000.

In simple terms, the system tries to separate genuine wealth creation from price increases caused by inflation.

How Does CGT Affect Shares and Other Investments?

Many Australians encounter CGT when they begin investing beyond their regular income.

Selling shares, ETFs, cryptocurrencies or investment properties can trigger a CGT event. Even managed funds can distribute capital gains to investors, meaning a tax obligation may arise even when no investments have been sold directly.

The amount of tax payable can depend on:

  • How long the asset was held.
  • The investor's tax bracket.
  • Whether capital losses are available to offset gains.
  • The final structure of the new legislation.

For this reason, understanding CGT is an important part of long-term investing and wealth planning.

Why Is Capital Gains Tax Linked to Housing?

CGT frequently appears in housing debates because it affects the returns investors receive from property.

Tax concessions can encourage investment, which may increase competition for homes in some areas. Critics argue that these incentives have contributed to affordability challenges for first-home buyers.

Supporters, meanwhile, argue that investment supports housing supply and rental availability.

However, housing prices are influenced by many factors beyond tax policy, including population growth, construction activity and housing supply constraints.

For renters, changes in investor activity may affect rental supply over time, but broader demand and housing shortages also play significant roles.

Why Is CGT Back in the News in 2026?

Capital gains tax has received renewed attention for three key reasons.

First, a Senate inquiry examined the operation and impact of the current CGT discount.

Second, analysis from the Parliamentary Budget Office explored how much revenue the discount costs the government and who benefits from it.

Third, the federal government used the 2026-27 Budget to announce its proposed reforms, making CGT one of the most discussed aspects of Australia's tax system this year.

Why Understanding CGT Matters for Everyday Australians

You do not need to be a property mogul or stock market expert to encounter capital gains tax. Anyone building wealth through shares, ETFs, managed funds or investment properties may eventually face CGT.

Understanding how the rules work can help investors make better decisions, estimate after-tax returns and avoid unexpected liabilities.

With changes scheduled for July 2027, staying informed may become increasingly important for Australians looking to grow wealth while navigating a changing tax landscape.