Australian Federal Budget Introduces Major Tax Reforms to Negative Gearing and CGT

The Australian Government's newly announced Federal Budget reforms targeting negative gearing and capital gains tax (CGT) have sparked intense debate over their potential to reshape the national housing market. Delivered on May 12, 2026, the budget introduces sweeping changes aimed at tilting the balance in favour of first-home buyers, though industry figures warn the policy could worsen Australia's rental crisis. Under the leadership of Treasurer Jim Chalmers, the reforms represent a significant structural shift in how residential property investment is taxed, aiming to redirect investment capital towards new construction.

The Mechanics of the Tax Overhaul

From July 1, 2027, negative gearing for residential properties will be limited exclusively to new builds. Under the new definitions, a new build is classified as a residential property that genuinely adds to the housing stock and has not been previously sold or occupied for more than 12 months. This definition specifically excludes knock-down rebuilds that do not result in a net increase in housing supply.

Existing investment properties owned before 7:30 PM AEST, May 12, 2026, are grandfathered and will retain their current negative gearing benefits indefinitely. For properties purchased during the transition window from May 13, 2026 - June 30, 2027, established homes can continue to be negatively geared until the new rules take effect on July 1, 2027.

In tandem with the negative gearing restrictions, the 50% Capital Gains Tax (CGT) discount currently available to individuals, trusts, and partnerships will be replaced with a cost-base indexation method starting July 1, 2027. This method adjusts the original purchase price of the property for inflation over the holding period. Furthermore, a new minimum tax rate of 30% will apply to capital gains from this date. To incentivise new supply, investors in new builds will retain the option to choose between the old 50% discount or the new indexed method. The government expects these tax reforms to generate $3.6 billion in revenue over four years.

Housing Supply and First-Home Buyers

The primary objective of the policy is to improve homeownership affordability for buyers currently priced out of the market. The government estimates the reforms will help approximately 75,000 additional Australians enter home ownership over the next decade. To support the construction sector, the budget also includes a new $2 billion Local Infrastructure Fund, which is projected to facilitate the construction of up to 65,000 new homes by funding essential services and infrastructure in high-growth areas.

Despite these supply measures, the long-term impact on housing construction remains highly contested. Modelling from the forecasts that the tax changes will result in fewer homes built over 10 years, reflecting the risk that reduced investor demand could slow down overall development activity. This projected decline in construction has drawn attention from groups like the , which monitors the supply chain impacts of residential construction.