The methodology applied to assets in a business sale valuation – or a partial disposal of one – carries significant consequences for the tax position of parties involved. A ruling by the Full Federal Court, Kilgour v Commissioner of Taxation [2025] FCAFC 183, establishes important judicial guidance on the proper determination of “market value” within the capital gains tax framework.

Practitioners and business owners engaged in sale transactions, structural reorganizations, or succession planning would do well to absorb the Court’s reasoning: tax valuations carry little weight unless they faithfully reflect the commercial circumstances of the transaction rather than resting on abstract assumptions.

Business Sale Valuation: The Facts in Issue

The dispute arose from a 2016 transaction in which three family trusts sold their shares in Punters Paradise Pty Ltd—an online wagering business—to News Corp for approximately $31 million. Shareholding was distributed as follows:

• Pettett Trust: 60%
• Kilgour Family Trust: 20%
• Reuhl Family Trust: 20%

The business sale evaluation proceeded on arm’s length terms, subject to due diligence and included a working-capital adjustment on completion.

Each 20% minority holder sought access to the small business CGT concessions, requiring net assets to remain below a $6 million threshold. They argued that an interest of that size would naturally attract a material discount when assessed independently.

The Commissioner rejected this, contending that each 20% parcel formed part of a unified 100% transaction and should be valued at 20% of the $31 million consideration. The Court upheld this approach.

The Court’s Reasoning on Market Value

The Court reaffirmed the “willing buyer/willing seller” standard from Spencer v Commonwealth, anchoring it in the commercial realities before it. Two significant points emerge.

1. Foreseeable circumstances inform the valuation date

The statutory provisions require value to be assessed “just before” the contract is executed. The Court held that a valuer cannot disregard circumstances within contemplation at that point. As completion was a practical certainty, the negotiated consideration was the most reliable indicator of market value.

A purchaser’s willingness to pay a premium—whether for control, synergies, or strategic positioning—forms part of the valuation context and cannot be excluded.

2. Transactional terms prevail over theoretical discount adjustments

The taxpayers relied on conventional minority discount principles. The Court rejected this as commercially artificial, noting three features:

• The shareholders had agreed to divest simultaneously and as a unified whole.
• The purchaser sought complete ownership, making fragmented acquisitions irrelevant.
• A 100% sale inherently supports the full attributed value of each parcel, regardless of size.

A notional purchaser would have had no rational basis for applying a minority discount. Each interest derived its value from participation in the aggregate transaction. Coordinated disposals can result in interests being valued above what a disaggregated analysis produces.

Business Sale Valuation Considerations for Owners and Advisers

• Minority interests may carry greater value than assumed. Where a purchaser is motivated by control or synergistic benefits, the market value of a modest shareholding may exceed what a mechanical discount suggests. Advisers must ensure the full commercial context informs every business sale valuation exercise.

• Contemporaneous records are essential. Documentation gathered during the transaction—negotiation correspondence, independent valuations, and evidence of the purchaser’s rationale—will be central to substantiating a tax position where CGT concessions are in issue.

• CGT concession eligibility warrants early analysis. Owners intending to rely on small business concessions should review their position before binding steps are taken, including execution of heads of agreement. Structural adjustments may produce different outcomes, though anti-avoidance provisions must be assessed carefully.

• Shareholder expectations must be aligned. Minority holders in private or family enterprises often assume their interests will be assessed in isolation. Kilgour confirms courts examine the transaction as a whole, and collective conduct among co-owners shapes how interests are valued.

Concluding Observations

Kilgour reinforces a foundational principle: a business sale valuation disconnected from genuine commercial conditions is unlikely to withstand scrutiny. Business owners and advisers should engage well before contractual commitments are made, ensuring business sale valuations are properly constructed and documented. Where CGT concessions are at stake, the difference between a defensible and an ill-considered valuation may prove both substantial and irreversible.

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