Full Federal Court denies deductions for transactions between related parties
03/03/2026
The Full Federal Court has ruled in favour of the Australian Taxation Office (ATO), disallowing deductions for transactions between related parties which were not documented adequately. In Commissioner of Taxation v S.N.A Group Pty Ltd [2026] FCAFC 10 a group of entities collectively referred to as the S.N.A Group carried on real estate businesses.
The decision by the full Federal Court makes clear that informal arrangements and internal accounting entries are not enough to support deductions for related-party transactions. This case has particular significance to taxpayers who enter related party transactions with specific relevance to family groups that may currently lack the requisite written documentation. This case also has potential ramifications for corporate groups that are not consolidated for income tax purposes and cross border related party transactions.
The background
Two companies in the S.N.A Group entered into agreements with two asset-owning trusts for the use of rent rolls, trademarks, and associated assets in 2005. The agreements covered the period from 2005 until 2015, at which point they lapsed and were not renewed. Despite this, the operating companies continued to use the assets and continued to make payments after the agreements had lapsed, claiming the payments as deductible service fees.
The primary judge found in favor of the taxpayer, concluding that the taxpayers were subject to a presently existing liability and that the fees were therefore deductible under section 8-1. The primary judge held that, although there was no longer a written contract, the terms could be inferred from the parties’ conduct. The primary judge was particularly sympathetic to the commercial practice of small businesses, where related-party transactions are not always documented.
However, the Full Federal Court held that, there was no objective evidence after 2015 of communications between the parties, their bookkeeper, or their external tax accountant indicating that the companies were subject to a liability for the use of the assets. Nor were any tax invoices issued by the trusts. Furthermore, the method for calculating the payments for the use of the assets, which was based on the unitholders of the trusts receiving a specified percentage return, was inconsistent with the fees ultimately paid.
The making of payments and recording those payments in the books of related parties is not sufficient to infer a request for the provision of services or assets. Taxpayers must be able to objectively support a liability when charging fees for services and the use of assets by related entities. They should ensure that agreements between related parties are properly documented and kept up to date so as to cover the relevant period for which deductions are claimed.
Practical implications
Taxpayers who do not have written agreements, or who are unable to objectively demonstrate the existence of a contract are at risk of having deductions denied for transactions with related entities.
Contemporaneous documentation for related-party transactions should be prepared and regularly reviewed so that it covers the relevant period of any deductions and clearly details the method of calculation. Where documentation is not available, taxpayers should identify and retain other evidence to support the existence of a contract, including emails, minutes, invoices, or workpapers.
How SW can help
The decision in Commissioner of Taxation v S.N.A Group Pty Ltd [2026] FCAFC 10 makes clear that informal arrangements and internal accounting entries are not enough to support deductions for related-party transactions. Groups with inter-entity dealings should take this opportunity to review whether their agreements are properly documented and supported by objective evidence.
SW can assist by reviewing your existing related-party arrangements, assessing the robustness of your charging methodology, identifying gaps in contemporaneous documentation, and helping you update or formalise agreements to ensure they withstand scrutiny. Taking proactive steps now can significantly reduce the risk of deductions being denied in the future.
