Negative gearing 2026 in Australia: primary law and cash flow models

Negative gearing 2026 in Australia: primary law and cash flow models

Negative gearing on residential property gets limited to new builds from 1 July 2027, and the change is already locked in for anyone who buys after Budget night. If you exchanged contracts before 7:30pm AEST on 12 May 2026, your existing property is grandfathered and keeps current treatment. Everyone else faces quarantined losses and a new capital gains tax regime, with the ATO and Treasury now the two places to check before you sign anything.

TL;DR:

  • Negative gearing restrictions will only apply to new builds acquired after May 12, 2026; existing properties bought before that retain current treatment if exchanged before May 12, 2026, 7:30 pm AEST.
  • From July 1, 2027, the 50% CGT discount will be replaced by cost base indexation and a minimum 30% tax rate on gains, with gains before that date still eligible for the discount.
  • The law treats assets held before July 1, 2027, as deemed disposed and re-acquired at that date, splitting the gain into pre- and post-reform portions taxed under different rules.
  • Property exchanges after May 12, 2026, are not grandfathered and will have losses quarantined, only offsetting future rental income or residential capital gains.
  • Accurate documentation and valuation records are critical now to ensure compliance with grandfathering rules, especially for properties bought near the cutoff date or held in trusts.

Table of Contents

Negative gearing rules 2026: the policy summary you need

Two separate reforms sit inside this legislation, and conflating them is the most common mistake investors make right now. The first restricts negative gearing itself. The second rewrites how capital gains tax gets calculated. Both take effect from 1 July 2027, but the eligibility cut off for negative gearing is tied to Budget night, not to the start of the new financial year.

Here’s the mechanical detail that matters for anyone weighing up a purchase:

  • Negative gearing limit: from 1 July 2027, rental losses on residential property can only be claimed against other income if the dwelling is a new build acquired after 12 May 2026. Established dwellings bought after that date have their losses quarantined instead of offsetting your salary or wages.
  • CGT discount replacement: the 50% CGT discount disappears for gains accruing on or after 1 July 2027, replaced by cost base indexation and a flat 30% minimum tax rate on those accrued gains, as set out in the Parliamentary Bills Digest.
  • Deemed disposal mechanism: assets held before 1 July 2027 get a deemed disposal and re-acquisition at that date, splitting the gain into a pre-reform portion (taxed under old rules) and a post-reform portion (taxed under the new minimum rate).
  • Grandfathering trigger: the protected status applies to contracts exchanged, not settled, before 7:30pm AEST on 12 May 2026.

The government’s stated intent, according to Treasury’s Budget 2026-27 material, is to redirect investor demand toward new housing stock rather than competing with owner-occupiers for existing homes. Whether that plays out in practice depends heavily on how “new residential dwelling” ends up defined, which we cover further down. For now, the operative legal text sits in Schedule 2 of the enacted legislation, and that’s the document to quote if you’re ever in a dispute with the Tax Office over a specific property’s status.

Who is affected and common exemptions

Most residential investors bought before 12 May 2026 are untouched by this reform for as long as they hold that specific property. Sell it and buy again, though, and the new rules apply to the replacement purchase in full. The grandfathering is asset-specific, not investor-specific.

Where things get genuinely tricky is the definition of “acquired.” According to Corrs Chambers Westgarth’s analysis, exchange of contracts is generally the trigger point, not settlement. That means a property you exchanged on 10 May 2026 but settled in August still qualifies for grandfathering, while one you exchanged on 13 May doesn’t, even if you’d been negotiating for months beforehand.

Several categories sit outside the new limits entirely:

  • Complying superannuation entities, including SMSFs holding residential property, are not subject to the quarantining rules in the same way individual investors are.
  • Widely held trusts and AMITs (Attribution Managed Investment Trusts) get carved out, reflecting their different regulatory treatment.
  • Build-to-rent projects that meet targeted criteria remain outside the restriction, consistent with the policy goal of boosting new supply.
  • Certain social housing arrangements and classes the responsible Minister determines by instrument are also excluded.

Small private trusts and family structures face the messiest version of this. A discretionary trust holding an established rental bought in 2024 is grandfathered on that specific asset, but distributions to beneficiaries, changes in trustee, or a resettlement event can potentially trigger a fresh “acquisition” test under trust law principles that predate this reform. If your investment property sits inside a trust, that’s a conversation for your accountant well before tax time, not after.

How quarantined losses and the CGT changes actually work

Quarantining sounds abstract until you see it against a real deduction. Say your established-dwelling rental loses $8,000 a year after interest and expenses. Under the old rules, that loss reduced your taxable salary dollar for dollar. Under the new regime, if the property was acquired after 12 May 2026 and isn’t a new build, that $8,000 gets quarantined. It can’t touch your wages at all.

What quarantined losses can offset is narrower than most investors expect:

  1. Future residential rental income from the same or another non-exempt residential property you hold.
  2. Residential capital gains realised when you eventually sell a non-exempt residential property.
  3. Nothing else. Salary, wages, business income, and gains on shares or commercial property are all off limits for quarantined amounts.

The Bills Digest sets out a specific order of application when you’ve got multiple years of carried losses stacking up against a sale. Losses generally apply against income first, then against capital gains in the order they arose, which matters if you’re modelling out a sale in 2029 or 2030 and trying to work out your net position.

The CGT side compounds this. Instead of the old 50% discount, gains accruing from 1 July 2027 get indexed against a re-based cost base, then taxed at a 30% minimum rate on the indexed amount. Gains that accrued before that date keep the old discount treatment, which is why the deemed disposal split matters so much. One insight worth sitting with: this transition means you’ll effectively need two cost bases and two holding period calculations for any property spanning the cut off, because the pre-reform and post-reform portions of the gain are taxed under completely different rules.

Pro Tip: Start a running spreadsheet now that records your property’s market value as at 30 June 2027, even if you have no intention of selling soon. Getting a defensible valuation at the exact transition date is far easier in real time than reconstructing it years later.

One risk that rarely gets airtime: Treasury’s material flags that carried quarantined amounts can be extinguished in bankruptcy under the proposed provisions. If you’re geared aggressively across multiple properties, that’s a real consideration when weighing up risk, not just a footnote.

What investors and tax practitioners should do now

The single most valuable thing you can do this year is nail down your paper trail, because eligibility for grandfathering will be argued on documentation, not memory.

  1. Confirm your exact acquisition timestamp. Pull the exchanged contract date and time, not the settlement date, and get written confirmation from your conveyancer or solicitor that exchange occurred before 7:30pm AEST on 12 May 2026.
  2. Audit every property in your portfolio against that cut off. Properties exchanged on or after 12 May 2026 need a separate compliance file from anything grandfathered.
  3. Build a valuation record starting now. You’ll need a defensible market value at 30 June 2027 for the deemed disposal calculation, plus records of every capital improvement, loan drawdown and interest apportionment since acquisition.
  4. Talk to your accountant about the new method statement before your next tax return, not after. The order in which quarantined losses apply against future income and gains is prescriptive, and getting it wrong in year one creates a compounding error.
  5. Model your options before assuming you should sell. A property with strong rental yield can still make sense held under quarantining rules; a marginal one might not.

If you manage several properties, this is also the moment to review who’s handling your compliance workload. Engaging a specialist property manager who understands the new record-keeping burden can save real money in avoided penalties down the track, particularly if you’re juggling multiple non-exempt properties with different acquisition dates.

For anyone holding property inside a trust structure, or weighing up how this interacts with estate planning, it’s also worth getting a legal read on how the CGT changes intersect with inheritance and trust law, since a resettlement or transfer event can complicate the grandfathering status in ways the legislation doesn’t spell out plainly.

If your accountant hasn’t mentioned any of this yet, raise it yourself. The high-income earner tax strategies that made sense under the old discount regime need re-checking against the 30% minimum rate before you assume they still stack up.

Three scenarios: what the numbers actually look like

Modelling beats guessing here, because the gap between grandfathered and non-exempt treatment compounds over a holding period, not just at tax time.

Scenario A: grandfathered purchase. You exchanged on an established dwelling on 1 May 2026, before the cut off. Your negative gearing continues under current rules indefinitely for that property, and any eventual sale still gets the 50% CGT discount for the pre-transition portion of the gain, with the new minimum rate only applying to growth after 1 July 2027.

Scenario B: post-Budget purchase of an established dwelling. You exchange in late 2026 on an existing house. Your rental loss is quarantined from day one, meaning it can’t reduce your salary tax. You’re carrying the loss forward against future rental income or a future residential capital gain, with no benefit until one of those eventuates.

Scenario C: purchase of a new build. Same purchase price and loan structure as Scenario B, but because it qualifies as a new residential dwelling, negative gearing applies as normal from 1 July 2027 onward, no quarantining involved.

Scenario Negative gearing treatment CGT on eventual sale
A: Grandfathered (pre 12 May 2026) Full offset against other income, unchanged 50% discount on pre-transition gain; 30% minimum rate on post-transition growth
B: Post-Budget, established dwelling Quarantined; offsets only future rental income or residential gains Cost base indexation and 30% minimum rate on gain accrued after 1 July 2027
C: Post-Budget, new build Full offset against other income, as under current rules Cost base indexation and 30% minimum rate on gain accrued after 1 July 2027

These figures assume a standard variable interest rate, a moderate rental yield and a multi-year hold, illustrative only, not a prediction for any specific property or postcode. The cash-flow gap between Scenario B and Scenario C is the whole reason this reform exists: Treasury wants that gap to push buyers toward new supply. Whether it actually shifts your own numbers enough to change your decision is worth running through proper modelling rather than a back-of-envelope guess, and tools like WealthStacker’s investment modelling let you plug in your own loan terms and compare a grandfathered hold against a fresh purchase side by side. If you’re weighing up buying versus continuing to rent while you invest elsewhere, the rentvesting comparison works through that trade off in more depth.

Key dates and what’s still being finalised

The timeline has three fixed points and several loose ends. 7:30pm AEST on 12 May 2026 is the grandfathering cut off for negative gearing eligibility. 1 July 2027 is when quarantining, the deemed disposal, cost base indexation and the 30% minimum rate all come into force together.

What’s not yet settled:

  • The precise statutory definition of “new residential dwelling,” expected via ministerial instrument or further ATO guidance rather than the primary legislation itself.
  • Apportionment rules for mixed-use or partially renovated properties.
  • Trust-specific guidance on what constitutes a fresh “acquisition” for grandfathering purposes.

Watch the ATO’s guidance pages, Treasury’s consultation site, and ParlInfo for updates as these details get settled over the next 12 to 18 months.

Where to check the primary sources

Don’t take any secondhand summary, including this one, as the final word on your specific situation.

This article is general information, not a substitute for advice from a qualified financial advisor. Consult a qualified financial professional about your own circumstances before acting on anything here.

Sources

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