How the Negative Gearing Reforms Will Impact Australia's Rental Market

Introduction

One of the most politically charged aspects of any negative gearing reform debate is the projected impact on renters. Headlines about rent increases have featured prominently in commentary on the 2026-27 Budget changes. Treasury's own modelling, however, projects an aggregate rent impact of less than $2/week at the median a remarkably small effect that reflects careful policy design.

This article walks through the rental market impact analysis: what Treasury projects, why the impact is small, where regional variation might emerge, and how the supply-side response affects long-term outcomes.

Treasury's Projections

The budget papers include detailed rental market modelling drawing on existing investor cohort data, anticipated behavioural responses, and supply-side construction forecasts. Headline projections:

These projections explicitly assume:

• The grandfathering provision protects existing landlord economics.
• New build investment incentives continue to drive rental supply additions.
• Carry-forward losses preserve long-term economic value for new investors.
• The +75,000 owner-occupier shift removes corresponding rental demand.

Why the Rental Impact Is Modest

1. Existing stock is grandfathered

Approximately 2.2 million Australians own residential investment property. The vast majority owned at 7:30pm AEST 12 May 2026 and are grandfathered. Their rental economics are unchanged. There is no reason for grandfathered landlords to raise rents in response to a reform that does not affect them.

2. New build incentives preserve supply

For new investors, the new build exception fully preserves rental supply incentives. Off-the-plan apartments and house-and-land packages remain tax-advantaged. The reform is designed to redirect investor capital toward supply addition rather than to reduce overall investor activity.

3. Carry-forward defers (not eliminates) deductions

Post-announcement established property investors face deferred deductions, not eliminated deductions. Carry-forward losses preserve long-term economic value. The marginal effect on willingness to invest is correspondingly small.

4. Rental demand falls with +75,000 owner-occupiers

Treasury's +75,000 projection means 75,000 households shifting from renting to owning over a decade. That demand-side reduction roughly balances any modest supply-side adjustment, keeping rents stable in aggregate.

The +75,000 Owner-Occupier Effect

The 75,000 additional owner-occupiers projection has multiple components:

• Reduced investor competition for established property allows more first home buyers to succeed at auction.
• The expanded Help to Buy scheme increases first home buyer purchasing capacity.
• Worker tax cuts in the same budget improve household income for purchase saving.
• Modest house price moderation (2% less growth) improves affordability over time.

The combined effect is a slow, structural shift in tenure composition rather than a sudden change. Spread over a decade, 75,000 households is approximately 7,500/year meaningful but not disruptive.

Regional Variation

The aggregate rental impact projection masks variation across markets. Cities and regions are expected to be affected differently based on:

• Apartment-heavy markets. Cities with high apartment stock (Sydney, Melbourne, Brisbane CBD) benefit most from new build incentives supply pipelines may grow.
• Tight vacancy markets. Adelaide and Perth, currently with low rental vacancy rates, are most sensitive to any supply withdrawal.
• Regional markets. Areas with limited new construction may see less of the supply-side benefit, and may experience modest rent pressure.
• Holiday and short-stay markets. Areas where short-stay competes with long-term rentals are largely unaffected by the reform.

Investors and tenants should expect outcomes to vary regionally but Treasury's aggregate projection of <$2/week median impact is the central case for the national rental market.

Supply-Side Response

The Government's central policy hope: investor capital shifts from established stock to new construction, increasing rental supply over time. Industry feedback so far has been broadly supportive of this objective, with apartment developers reporting increased pre-sale enquiry from investors targeting the new build exception.

For the supply-side response to deliver projected outcomes, several factors must align:

• Sufficient new construction capacity (builder availability, materials supply, planning approvals)
• Continuing strong investor interest in off-the-plan apartments
• State-level supportive settings (zoning, planning, stamp duty)
• Macroeconomic stability (interest rates, employment)

If these conditions hold, rental supply additions from investor-funded construction should offset any reduction in established-stock investment, supporting Treasury's modest rent impact projection.

Opposition Claims vs Government Modelling

As with any tax reform, contested modelling has emerged. Some opposition commentary projects more substantial rent increases (figures of $30-50/week have been quoted) on the basis that landlords will pass through deduction losses to tenants.

The Treasury counter-argument: most landlords are grandfathered, carry-forward preserves long-term value, and new build incentives continue. The cohort of landlords actually experiencing changed economics is narrow and unlikely to be able to pass through losses against the competitive backdrop of growing new build supply.

Investors and tenants making decisions based on rent projections should weight Treasury modelling above interest-group projections, while remaining alert to local conditions and the actual evolution of the rental market post-1 July 2027.

Implications for Tenants and Landlords

For tenants

Aggregate rents are projected to grow approximately as before perhaps marginally faster, but within usual variation. Local rental conditions remain driven by supply-demand fundamentals (vacancy rates, employment, population growth). The reform is unlikely to materially affect renter outcomes at the national level.

For landlords

Grandfathered landlords have no rational basis to raise rents in response to a reform that does not affect them. Post-announcement landlords face modestly tighter cash flow but can sustain existing rental approaches over the long term given carry-forward loss preservation. Landlords planning to raise rents materially "because of the budget" should consider whether tenants will accept the increase or seek alternative housing.