Pre-CGT Asset Protection Guide

Valuations for Pre-1985 Properties

A historic tax exemption is coming to an end. Learn why long-term owners of pre-1985 (pre-CGT) properties must secure a certified valuation on 1 July 2027 to protect their family wealth.

For more than forty years, properties purchased before 19 September 1985 (known as **pre-CGT assets**) have enjoyed a sacred status under Australian tax law: a **complete exemption** from Capital Gains Tax. However, the landmark May 2026 Budget has officially scheduled the end of this grandfathered exemption.

The End of the Grandfathered Pre-1985 Exemption

Starting from 1 July 2027, pre-1985 properties will no longer be fully exempt from CGT. Instead, the government will tax these properties on any capital growth that occurs **after** the transition date. While you are not taxed on past gains, your property's value on 1 July 2027 becomes the new cost base boundary.

Why a 1 July 2027 Valuation is Mandatory

To establish the post-2027 growth margin, the ATO requires a clear starting point. Under the legislation, investors are presented with two valuation options, but only one offers absolute wealth protection:

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The ATO Day Apportionment Method

If you do not secure a certified valuation on the transition date, the ATO will apportion your total capital gain linearly based on days held before vs. after 1 July 2027. If your property experienced its major growth cycle in the decades prior to 2027 (which is highly likely), this linear assumption will artificially inflate your post-2027 taxable gain, resulting in a massive, unfair tax bill.

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The Certified Market Valuation Method (Highly Recommended)

By hiring a registered property surveyor to document your property's actual market value on 1 July 2027, you establish a legally compliant cost base. Every dollar of capital growth accumulated between 1985 and 2027 is permanently locked in as **tax-free wealth**. Only growth exceeding this 1 July 2027 valuation will ever be subject to CGT.

The Post-2027 Tax Plan: Indexation Defense

Once your 1 July 2027 valuation is established as the new cost base, any subsequent capital gain you make upon eventual sale will be calculated under the new post-reform rules. The cost base (anchored at the 2027 valuation plus any post-2027 capital improvements) will be compound-adjusted for CPI inflation.

This makes **flawless cost base record keeping** after 1 July 2027 mandatory. Every capital renovation, repair bill, and survey cost must be digitized and compound-inflated to shield your remaining equity from top-up tax floors.

To prepare for these changes, you can explore our comprehensive suite of free Australian tax calculators designed to model property depreciation, rental yields, and capital gains tax impact.

Summary of Next Steps for Long-Term Owners

1. **Mark the Calendar:** 1 July 2027 is the transition date. Pre-book a registered surveyor 3-6 months in advance.

2. **Retain Historical Surveys:** Gather all previous property blueprints and inspection reports to assist your valuer in securing the maximum defensible valuation.

3. **Adopt Digital Bookkeeping:** Transition all property expenses to a secure SaaS platform like ReceiptClaimer to automatically model your future CPI adjustments.

Simulate Your Valuation Lock Impact

Estimate how your 1 July 2027 market valuation impacts your future CGT under different growth assumptions.

Open CGT 2027 Simulator