What Makes a Valuation Defensible | CGT Valuations

What makes a valuation hold up.

Most valuation problems are not disagreements about value. They are the wrong kind of report, commissioned for the wrong purpose, at the wrong date — and every one of them is cheaper to avoid than to fix.

Quick answer

The ATO expects a tax-purpose valuation to be specific to the provision it serves, prepared by a suitably qualified valuer, built on a recognised methodology and credible evidence, and documented well enough that the process can be replicated. In practice that means a named valuer, a stated effective date, analysed comparable sales, methodology, assumptions and a signed certification. An agent appraisal, an automated estimate or a bank valuation has none of that.

In this cluster

5 guides, in the order they apply.

Read the ATO guide first — it sets the standard the four comparisons are measured against. If a report has already been questioned, start with the expert witness service rather than a guide.

Start here What the ATO looks for The things the ATO expects to see in a market valuation prepared for tax purposes. Read the guide Comparison Appraisal vs registered valuation Why the ATO does not accept an agent appraisal as substantiation. Read the guide Comparison Desktop estimate vs full valuation AVMs, desktop assessments, kerbside and full valuations against what the ATO accepts. Read the guide Comparison CGT vs stamp duty valuation Different laws, different dates, different reviewers — and when one report serves both. Read the guide Comparison Single expert vs party-appointed Engagement structures for valuation evidence in court, and what each costs. Read the guide

The service behind this

When you need the report, not the reading.

Fixed fees from $440 incl. GST for standard metropolitan residential. Quotes returned within 2 business hours, reports in 5 business days of inspection.

Expert Witness Reports Retrospective Valuations Fees and what moves a quote

Sources

General information about how valuations are used for tax purposes. Not tax advice. Your accountant or tax agent should confirm which provision applies to your circumstances.

Jarrad Khoury, Head of Valuations and Certified Practising Valuer

Written and reviewed by

Jarrad Khoury

Head of Valuations at Asset Valuations Group, where he leads the Business Valuation Services division. Over 10 years in property and business valuation. Registered Valuer in Queensland (Not Limited), Licensed Valuer in Western Australia (Not Limited), CPV through the Australian Property Institute (Not Limited), CPV and CBV through the Australian Valuers Institute, and Registered Business Valuer through the AIBB.

Last reviewed 15 September 2026 · About the practice · Editorial policy

Fixed fees from $440 incl. GST. Quotes returned within 2 business hours, reports in 5 business days.