Budget 2026: What the Negative Gearing and CGT Changes Actually Mean for Australian Property Investors

Last night, Treasurer Jim Chalmers handed down the most significant property tax reform in nearly three decades. Negative gearing and the 50% capital gains tax discount, two cornerstones of Australian investor strategy since 1999, are both being restructured.

If you own an investment property, are planning to buy one, or are about to settle on one this month, the changes affect you differently depending on the timing. Here's the plain version.

The headline: three different rules depending on when you buy

The Government has split investors into three groups based on a single moment in time: 7:30pm AEST on 12 May 2026, the instant the Budget was delivered.

Group 1: You owned the property (or had a signed contract) before Budget night

Nothing changes. Both your negative gearing and your 50% CGT discount are fully grandfathered for the life of that asset. If you've held a rental for years, your tax position is preserved.

Group 2: You buy between Budget night and 30 June 2027

You get a one-year transition. Negative gearing against your wage income continues until 30 June 2027. After that, rental losses on this property can only offset other residential property income, not your salary. You can carry forward unused losses. The 50% CGT discount on assets purchased in this window also ends on 1 July 2027, with the new regime applying from then onwards.

Group 3: You buy from 1 July 2027 onwards

This is where the real reform lands. Two rules apply:

• Negative gearing is restricted to new builds only. That includes vacant-land construction, off-the-plan purchases, and knock-down rebuilds that add a dwelling. Buy an established home, and rental losses can only offset other residential property income, not your wages.
• Capital gains tax: the 50% discount is gone for established property. It's replaced by CPI indexation (your cost base rises with inflation, and only the real gain is taxed) plus a 30% minimum tax on that real gain. New builds keep a 50% discount, in line with the Government's push to lift housing supply.

What this actually means in practice

If you already own: sit tight. Your existing structure is protected. The biggest risk is not understanding that the protection is tied to this specific asset. Sell it, and any replacement falls under the new rules.

If you're mid-purchase right now: the date on your contract matters enormously. A signed contract before 7:30pm on 12 May 2026 sits in Group 1. A contract dated later sits in Group 2. If you're in due diligence on an established investment property, the calculus has changed. Speak to your broker and accountant before you sign.

If you're planning to buy in the next 12 months: you have a transition window. Buying an established property between now and 30 June 2027 gives you one tax year of full negative gearing, then a tighter regime kicks in. New builds remain the most tax-advantaged path under the long-term rules.

If you're a first home buyer: Treasury modelling estimates 75,000 additional owner-occupiers entering the market over the next decade as a result of these changes, with house price growth around 2% lower over the next couple of years. The pressure from investor demand on established stock should ease.

A note on what hasn't changed

Negative gearing itself hasn't been abolished. It still exists for new builds, and it still applies to your wages for properties bought before 1 July 2027. The CGT discount also hasn't been abolished. It's been replaced with an indexation model that, depending on inflation and how long you hold, can produce a similar or even better outcome on long-term assets.

Widely-held trusts and superannuation funds (including SMSFs) are excluded from the changes entirely.

What we're advising clients

Three things, in order:

1. Don't rush. Grandfathering protects existing investors. There's no value in panic-selling an asset whose tax treatment is locked in.
2. Time matters on new purchases. If you're already looking, understand which group your settlement date puts you in. The difference between a 30 June 2027 settlement and a 2 July 2027 settlement is structural.
3. Get the structure right from day one. Under the new rules, how you buy (established vs new build, individual vs trust vs SMSF) matters more than it has at any point since 1999.

The biggest mistake we're already seeing: borrowers assuming the rules apply retrospectively. They don't. If you bought in 2019, your tax position hasn't moved.