Eight overlooked tax issues in family law
InsightExplore eight often overlooked tax issues impacting asset division and liabilities in family law.
Expert-led tax essentials delivering practical insights and strategic foresight. Learn more.

This can often be an area of great angst when instructions are given by solicitors for expert accountants to adopt a specific Standard of Value, as it may exclude a Standard of Value that is more appropriate given the specific facts of that engagement.
One of the most significant changes to the International Valuation Standards (IVS), which are due to come into effect from 31 January 2025 is the removal of ‘fair market value’ as defined Basis of Value, which were defined regarding Fair Market Value (US IRS) and Fair Market Value (OECD).
However, the judicial representation of ‘fair market value’ in Australian stemming from Spencer v Commonwealth [1907] HCA 82 remains a widely accepted Basis of Value in legal proceedings involving business valuations, due to the inclusion of the word ‘fair’.
The three most common (and often debated) Basis of Value in Australia are:
The IVS defines ‘market value’ as:
Market Value is the estimated amount for which an asset or liability should exchange on the valuation date between a willing buyer and a willing seller in an arm’s length transaction, after proper marketing and where the parties had each acted knowledgeably, prudently and without compulsion. (IVS 102 p24 A10.01)
The IVS provides that the ‘market value’ of an asset will reflect its highest and best use, which is the use of an asset that ‘maximises its potential and that is possible, legally permissible and financially feasible. The highest and best use may be for continuation of an asset’s existing use or for some alternative use. This is to be determined by the use that a market participant would have in mind for the asset when formulating a price that it would be willing to bid.’ (IVS 102 p25 A10.04)
Many tax laws require the taxpayer to determine the market value which the ATO provides guidance being as ‘the estimated monetary worth of an asset on the open market at a particular time. It is based on:
[1] https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/market-valuation-of-assets
As stated above, ‘fair market value’ holds a longstanding judicial representation in Australia from Spencer v Commonwealth [1907] HCA 82, when Isaacs J described the (fair) market value of an asset to be determined by imagining a willing buyer and willing seller, and asking the highest price the buyer would offer; the seller being taken to accept however much they can get.
In this case, the High Court recognised the principles of:
The distinction between ‘fair market value’ and ‘market value’ is further discerned in common law, with the inclusion of the word ‘fair’ to be interpreted to mean ‘fair, just and equitable in the circumstances’ as stated by Santow J in Holt v Cox [1997] NSWSC 144.
Santow J stated in that judgement that ‘[i]t would be a mistake to automatically equate “market value”, as distinct from fair market value, with the “real value” which this test is designed to ascertain.” Essentially, fair market value considers a ‘fair market’ whereas market value considers a market that may or may not be operating fairly.
Conversely, in Yelland Security Pty Ltd v Plus Architecture International Pty Ltd [2021] VSC 416, the experts in that matter agreed that ‘there was no material difference between the concepts [market value vs fair market value] for the purposes of their reports’.
In a recent VSC decision, the concept of when a transaction is not market value was explored where the Court found the seller was ‘anxious’ and the market was not ‘fair’.
Fair value is most commonly adopted as an accounting concept used for financial reporting purposes.
The IVS defines ‘fair value’ by reference to the International Financial Reporting Standards:
IFRS 13 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. (IVS 102 p28 A70.01)
However as expressly acknowledged by the IVS, ‘fair value’ has judicial interpretation in different jurisdictions as a basis of value as defined in prior cases.
Provided below are the extracts of Candoora No. 19 Pty Ltd v Freixenet Australasia Pty Ltd & Anor [2008] VSC 367 from Justice Hargrave regarding the interpretation of ‘fair value’:
This judicial interpretation of fair value is most commonly applied in matters involving shareholder oppression, whereby the ‘fair value’ is applied to the (minority) shareholding to compensate the oppressed shareholder for the oppressive conduct.
In summary, the aforementioned Basis of Value have slight nuances between them, particularly between ‘market value’ and ‘fair market value’, which can be critical (or immaterial) in support of an individual’s circumstances in relation to how they should be applied in a valuation context.
For more information on the services the Forensic consulting team at Grant Thornton Australia provide to commercial litigation, contested estates, family lawyers, please contact me or your local contact.
The above concepts often generate a level of debate within the valuation profession, and the above confirms the views of the Writer only.
Explore eight often overlooked tax issues impacting asset division and liabilities in family law.
Post-acquisition disputes can significantly impact the success of a transaction and the ongoing success of the businesses involved. Read about practical insights into common post-acquisition dispute issues and how to address them proactively, particularly through the financial due diligence and deal advisory process.
In the latest episode of Beyond the Numbers with Grant Thornton, Partner & National Head of Forensic Consulting Alex Bell and Management Consulting Partner Chris Wong talk through the importance of independent payroll remediation reviews.