The 1 July 2027 Property Tax Changes: Complete Timeline and Action Checklist

Introduction

Tax reforms of this scale have detailed implementation timelines. Knowing exactly what changes on which date — and what actions matter at each milestone — helps investors avoid mistakes and capture opportunities. This article maps the complete schedule from the 12 May 2026 announcement through to the 1 July 2027 commencement, and provides actionable checklists by investor category.

The Complete Timeline

12 May 2026 (7:30pm AEST)

Budget announcement. The grandfathering cutoff occurs at the precise moment the Treasurer commenced the budget speech. Properties owned or under binding contract at this moment are fully protected.

Mid-2026 — Exposure Draft Legislation

Treasury releases exposure draft of the implementing legislation. Industry consultation typically runs 4-8 weeks. Stakeholders submit feedback; some technical detail may be refined.

Late 2026 — Bill Introduced

Government introduces the implementing legislation to Parliament. Standing committee hearings, debate, and amendments follow.

Early-Mid 2027 — Legislation Passed

Expected timing for parliamentary passage. The final legislation may differ in some details from the original announcement, but core architecture (grandfathering, new build exception, carry-forward, CPI indexation) is unlikely to change.

30 June 2027

Last day for wage-offset on transitional purchases (established property acquired 13 May 2026 to 30 June 2027). Last day of old CGT regime for all sales completed by this date.

1 July 2027

Commencement. New negative gearing rules apply to non-grandfathered property. New CGT rules apply to all sales of residential investment property completed from this date.

What Changes on Each Date

From 7:30pm AEST 12 May 2026

• New established property purchases enter the transitional category.
• New off-the-plan and new build purchases retain full concessions (unchanged forever).
• Existing properties become permanently grandfathered.

1 July 2027

• Transitional cohort: wage-offset ends; losses become carry-forward.
• Post-1 July purchases of established property: carry-forward from acquisition.
• New CGT rules apply to all residential investment property sales (split calculation).
• Transitional market valuation date for existing properties.

Checklist: Existing Property Owners (Grandfathered)

• ☐ Confirm acquisition or contract date precedes 7:30pm AEST 12 May 2026.
• ☐ Store contract, settlement statement, and title documents securely.
• ☐ Document grandfathered status in tax records.
• ☐ Continue existing negative gearing claims unchanged.
• ☐ Avoid transferring ownership (including to a spouse) without tax advice.
• ☐ Obtain a formal market valuation as at 30 June 2027 (for future CGT calculation).
• ☐ Review insurance, lease arrangements, and property management as usual — none of these affect grandfathering.

Checklist: Currently in the Buying Process

If you contracted before 12 May 2026

• ☐ Verify contract was binding before 7:30pm AEST.
• ☐ Complete settlement normally — grandfathering attaches.
• ☐ Document the contract date and binding status.

If you're contracting between 13 May 2026 and 30 June 2027 (established property)

• ☐ Understand: limited wage-offset window until 30 June 2027.
• ☐ Plan financing to maximise interest in the deductible window.
• ☐ Project carry-forward balance and recovery timing.
• ☐ Consider whether new build is a better-fitting alternative.
• ☐ Don't rush to "beat the deadline" if the property isn't right.

If you're contracting after 1 July 2027 (any property)

• ☐ For new builds: confirm new build status (first owner, ≤12 month occupation).
• ☐ For established: model carry-forward strategy.
• ☐ Verify ATO guidance on edge cases (KDR, off-the-plan timing).

Checklist: Considering Investment

• ☐ Read the pillar guide to the budget changes.
• ☐ Understand the new build exception and consider as default strategy.
• ☐ Don't make purchases driven by tax timing alone.
• ☐ Maintain normal property selection rigor (suburb, dwelling, price, financing).
• ☐ Engage a qualified tax accountant and financial adviser.
• ☐ Watch for ATO guidance and final legislation through 2026-2027.

Legislative Watch

Several technical points are expected to be clarified in the final legislation and ATO guidance. Investors should monitor:

• Detailed new build classification (especially KDR and supply increase test)
• Operation of the transitional valuation and safe-harbour methods
• Treatment of trust and partnership-held property
• Treatment of spousal and family transfers of grandfathered property
• Interaction with stamp duty concessions and state-level measures
• Specific anti-avoidance rules

Reliable sources: our pillar guide, Treasury website, ATO guidance updates, and professional tax bodies (CA ANZ, CPA Australia, Tax Institute).