Negative Gearing Changes 2026: What a Cap Would Mean for Australian Investors
Negative gearing reform is the loudest policy debate in Australian property investment in 2026. With housing affordability at crisis levels, budget pressure mounting, and both major parties under pressure to act, the question is no longer whether negative gearing will change, but how, and when.
This guide breaks down every realistic reform scenario currently being modelled, the dollar impact on typical investors, and what you can do now to protect your position before any change takes effect.
What Is Negative Gearing and Why Is It Being Targeted?
Negative gearing allows Australian property investors to deduct the net loss from an investment property (where expenses exceed rental income) against their other taxable income, including salary. It is one of the most valuable tax concessions in the Australian tax system. ATO data shows negative gearing alone cost the federal budget approximately $10.9 billion in 2023-24, and combined with the 50% capital gains tax discount the two concessions are projected to cost $181.2 billion over the decade to 2034-35 according to Parliamentary Budget Office (PBO) analysis.
For a full primer on how it works mechanically, see our guide on negative gearing explained with a worked example.
The policy is being targeted for three reasons:
- Housing affordability. Median house prices in Sydney and Melbourne remain above $1 million, pricing out a generation of first home buyers. Critics argue negative gearing fuels investor demand that competes directly with owner-occupiers.
- Revenue pressure. With structural budget deficits and rising demands on social housing and health, the combined $20 billion annual cost of negative gearing and the CGT discount is a persistent target for reformers.
- Equity concerns. ATO data shows that while most negatively geared investors are on moderate incomes, the tax benefit is proportionally larger for high income earners, drawing accusations that the policy is regressive.
The Reform Scenarios Currently on the Table
Policy analysts, the Treasury, the Grattan Institute, and both major parties have modelled several reform options. Each has very different implications for investors.
Scenario 1 (Currently Modelled by Treasury): Two-Property Cap
Treasury is reportedly modelling a 2-property cap. Investors can negatively gear losses on up to two investment properties against their salary. Losses on third and subsequent properties are quarantined, meaning they can only be offset against future rental income from those same properties. The PBO has costed a version of this reform as raising approximately $5.8 billion over the forward estimates.
Impact: Large portfolio holders are hit hardest. Most mum-and-dad investors with one or two properties see little direct change, though second-order effects on property prices and rents would still affect everyone.
Scenario 2: Restrict Negative Gearing to New Builds Only (Labor's 2019 Policy)
Under this model, losses from existing dwellings can no longer be offset against wage income. Only newly constructed properties would qualify for the full deduction. This was Labor's 2019 election policy (paired with a CGT discount cut to 25%) and the ALP lost that election, which is why senior Labor figures have been cautious about revisiting it.
Impact: A typical investor with an existing Sydney unit losing $18,000 per year would lose around $6,660 in annual tax refund (at the 37% marginal rate). The after-tax holding cost jumps from $11,340 to $18,000, making many existing investments unviable.
Scenario 3: Dollar Cap on Deductible Losses
A flat cap of $20,000 to $30,000 on the total rental loss that can be offset against wage income per year, regardless of property count. Favoured by some crossbenchers including Senator David Pocock.
Impact: Investors with highly leveraged, low-yield properties (common in capital city houses) are most exposed.
Scenario 4: Full Quarantining
Rental losses can only be deducted against rental income, never against wages. This is the approach used in New Zealand (ring-fenced since 2019) and functionally similar to the UK regime following Section 24 of the Finance Act 2015 (fully phased in from April 2020), which replaced full mortgage interest deductibility with a flat 20% tax credit, severely reducing the benefit for higher-rate taxpayers.
Impact: The most severe option. Essentially abolishes negative gearing in its current form. Only positively geared properties remain attractive.
Worked Example: A $700k Sydney Unit Under Each Scenario
To quantify the impact, let us model a typical investor earning $130,000 per year who owns a $700,000 Sydney unit with an $18,000 annual rental loss.
| Scenario | Annual Tax Refund | After-Tax Cost | Change vs Today | |---|---|---|---| | Current rules | $6,660 | $11,340 | Baseline | | Two-property cap (single property) | $6,660 | $11,340 | No change (within cap) | | New builds only (existing property) | $0 | $18,000 | +$6,660 per year | | Dollar cap $20k | $6,660 | $11,340 | No change (loss is under cap) | | Full quarantining | $0 (carried forward) | $18,000 | +$6,660 per year |
For a portfolio of three or more properties under the 2-property cap scenario, losses on the third property become non-deductible against wages. For an investor with three negatively geared properties each losing $12,000 a year, the third property's loss adds roughly $4,440 per year in additional after-tax cost under the cap.
Over a 10-year holding period, the difference between current rules and full reform compounds to roughly $66,600 in additional out-of-pocket costs for the single-property Sydney unit scenario, before accounting for any flow-through effect on property prices.
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Get Your Free Property Report →Will Existing Investors Be Grandfathered?
Every credible proposal currently on the table includes some form of grandfathering to avoid retrospective damage to investors who purchased under the existing rules. The most likely structure mirrors Labor's 2019 policy:
- Full grandfathering for properties acquired before the announcement date
- New rules apply to properties purchased on or after the effective date
- Trusts and companies may face tighter transition rules to prevent restructuring loopholes
- Depreciation treatment unchanged (it is a separate regime)
However, grandfathering is not guaranteed. If the fiscal position deteriorates further, a more aggressive model with a short transition window (12 to 24 months) becomes more politically viable.
Strategic Actions Investors Should Take Before Reform
Regardless of which scenario plays out, smart investors are already repositioning. Here is what to consider:
Stress-test every existing property without the tax benefit. If a property only works because of negative gearing, it is structurally fragile. Use our cashflow forecasting guide to model a zero-refund scenario.
Tilt future acquisitions toward positive cash flow. Regional markets, dual occupancy properties, and high-yield suburbs become more attractive if negative gearing is restricted. See our positive cash flow property guide for current opportunities.
Accelerate depreciation claims. Depreciation deductions (Division 40 and 43) are a separate regime and are not expected to change. A quantity surveyor schedule remains one of the highest-ROI tax strategies available.
Review your ownership structure. If reform includes quarantining rules, holding investment property through a company or unit trust may offer different treatment than personal ownership. Speak to a qualified tax adviser before restructuring.
Lock in pre-reform grandfathering. If a property is genuinely a good investment on its own merits, purchasing before an announcement could lock in grandfathered treatment for the holding period.
How This Interacts With CGT Discount Reform
Negative gearing reform is rarely discussed in isolation. The 50% capital gains tax discount is the sister policy and is also under active review. If both are modified simultaneously (capped negative gearing plus a reduced CGT discount of 25% or 33%), the combined impact on investor returns is roughly twice as severe as either reform alone.
For a detailed look at the CGT side of the equation, read our guide on the capital gains tax on investment property in Australia.
The Political Timeline: When Could Change Actually Happen?
Following Labor's re-election in May 2025, Treasurer Jim Chalmers has publicly stated that negative gearing changes are "not something we are proposing," while confirming Treasury modelling has continued. Backbench Labor MPs and crossbenchers including Senator David Pocock have pressed for reform ahead of the May 2026 federal budget, which Chalmers has flagged as "ambitious" on tax.
The most likely near-term timeline:
- May 2026 federal budget: Possible policy signals and tax white paper announcements, though formal legislation is less likely mid-term
- Pre-2028 election package: Most likely vehicle for formal proposals, given the 2019 Labor experience
- Post-election implementation: Earliest realistic effective date is 12 to 18 months after an election, typically in the July following a winning mandate
Investors should not panic-sell based on speculation, but equally should not assume the status quo is permanent. The PBO, Grattan, and Henry Tax Review have all flagged negative gearing and the CGT discount as priority reform areas, and the 2025-26 budget pressures make it a recurring target.
What Reform Means for Property Prices
Grattan Institute modelling, the most frequently-cited independent analysis, suggests that a combined negative gearing cap and CGT discount reduction would lower property prices by approximately 2%, with the national home ownership rate rising from around 67% to 70% over the medium term. The Grattan analysis also estimates that limiting negative gearing would raise about $2 billion a year in revenue and reducing the CGT discount from 50% to 33% another $5 billion a year.
These models often understate behavioural effects:
- Investors may rush to sell before new rules take effect, amplifying short-term volatility
- New build exemption scenarios could redirect capital into off-the-plan apartments, affecting that segment disproportionately
- Rental yields could rise as fewer investors enter the market, benefiting landlords who remain
The net effect on any individual property depends heavily on location, yield profile, and purchaser mix in that suburb. Well-located properties in supply-constrained markets are expected to remain resilient.
Bottom Line
Negative gearing reform is not a question of "if" but "how aggressive." The most likely outcome is a moderate restriction (new builds only or a dollar cap) with full grandfathering for existing investors. However, investors should not build their strategy on the assumption that the tax benefit will remain unchanged.
The strongest defence is to buy properties that stand on their own merits: strong location fundamentals, acceptable yield, and resilient cash flow. Tax concessions should be a bonus, not the foundation of your investment thesis.
If you are actively researching your next investment, explore PropBuyAI's pricing plans to see how AI-driven analysis can help you identify properties that remain profitable under any policy scenario.