Australia Budget 2026 Capital Gains Tax and Negative Gearing Reforms 2026

The Australian federal budget for 2026 has introduced sweeping tax reforms targeting property investors, with significant changes to negative gearing and the capital gains tax (CGT) discount. Treasurer Jim Chalmers described the package as "the most significant tax reform in more than a quarter of a century," aiming to rebalance the system away from taxing incomes and toward taxing assets. These measures are designed to help first-home buyers and improve housing affordability, though they have sparked debate among investors and the property lobby.

What Is Changing With Negative Gearing?

Negative gearing is a strategy that allows property investors to deduct losses when rental income falls short of expenses, reducing their taxable income. This has long been criticized for pitting investors against owner-occupiers, especially as house prices have surged. Under the new rules, investment properties purchased after 7:30 PM on budget night (May 12, 2026) will no longer be eligible for negative gearing from July 1, 2027. Key exceptions include new builds and certain government housing programs.

Existing investors are unaffected, and their negatively geared properties can continue under current rules. Treasury estimates that the benefits of negative gearing for current investors will phase out over about a decade, as most properties are sold or generate income within four to five years. The changes are expected to help an additional 75,000 Australians achieve home ownership over the next ten years.

Capital Gains Tax Discount Overhaul

The 50% CGT discount, introduced by the Howard government in 1999, has been a major incentive for property and share investors. Starting July 1, 2027, this discount will be replaced by cost-base indexation for assets held longer than 12 months. Under indexation, only the profit above the inflation rate since purchase is taxed, meaning investors pay tax on real gains rather than inflated nominal profits.

This change aims to reduce the tax advantage for short-to-medium-term investors while still encouraging long-term holding. Treasury modeling suggests the combined reforms will lower property price growth by about $19,000 or 2% for a couple of years, but the impact on rents is minimal—estimated at an extra $2 per week for median renters.

Impact on Housing Supply and Rents

The Coalition and property groups argue that scaling back these tax breaks will reduce housing supply. Treasury data confirms that 35,000 fewer homes will be built over the next decade as investors redirect capital. However, the government contends that the reforms will balance the market, making homes more accessible for first-time buyers. The table below summarizes key projections:

Why These Reforms Matter

The reforms target a system where house prices have decoupled from incomes, making it increasingly difficult for younger Australians to enter the market. By reducing investor tax advantages, the government hopes to level the playing field. According to the Australian Treasury, the changes will improve tax fairness for workers and future generations.

Investors holding assets before the budget night are grandfathered, providing a transition period. The shift from a flat 50% discount to indexation aligns Australia with other OECD countries that tax real capital gains. For more context, the Australian Taxation Office provides resources on how cost-base indexation works for assets held over 12 months.

Frequently Asked Questions

Will existing negatively geared properties be affected?

No. Properties purchased before budget night (May 12, 2026) are not affected and can continue to use negative gearing under current rules. The changes only apply to new investment properties bought after the budget announcement.

How does cost-base indexation work for CGT?

Cost-base indexation adjusts the purchase price of an asset for inflation. When you sell, you only pay tax on the gain above the indexed cost base. For example, if inflation was 10% over your holding period, your tax is calculated on the profit beyond that 10% increase.

What are the exceptions to the negative gearing ban?

Newly built homes and properties under certain government housing programs (e.g., affordable housing initiatives) are exempt from the ban. This is intended to encourage investment in new supply rather than existing housing stock.