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Earnouts are a common feature of Australian business sales where part of the purchase price is deferred and linked to future performance. For a business valuer, an earnout is not just a deal term, it is a pricing mechanism that can materially affect enterprise value, equity value, risk allocation, and the final consideration a seller receives. Properly assessing an earnout requires careful analysis of the underlying forecast, the probability of achieving milestones, and the impact of tax, working capital, and transaction structure on the value of the business.

What is an earnout in a business sale?

An earnout is a contractual arrangement under which a portion of the sale price is paid only if the business meets nominated financial or operational targets after completion. In Australian private transactions, earnouts are often used where the buyer and seller have different views on future performance, or where the business has a meaningful growth story that is difficult to price with certainty at the date of sale.

From a business valuation perspective, an earnout is a form of deferred contingent consideration. It shifts some of the valuation risk from the buyer to the seller, because the seller may only receive the full price if the business performs as expected. This makes the structure highly relevant to valuation engagement work, particularly where the company has volatile earnings, a concentrated customer base, reliance on key personnel, or a forecast that is difficult to substantiate using historical results alone.

Why earnouts matter in valuation engagements

An earnout changes the way a buyer and a valuer assess value. The headline price may overstate the amount likely to be received at completion, while the seller may focus on the full potential consideration rather than the probability-weighted value. A business valuer must therefore distinguish between the nominal earnout amount and its present value.

In practice, this means considering the expected achievement of the target, the timing of payment, the discount rate applied to deferred amounts, and the legal terms that determine whether the seller has a realistic path to payment. If the earnout is highly contingent, the market value of that component may be materially below its face value.

This is particularly important in privately held businesses, where there is no ready market to test pricing. The valuer must rely on normalised earnings, forecast assumptions, comparables, and transaction precedent evidence to judge whether the earnout is a genuine value bridge or simply a transfer of deal risk.

Common earnout structures in Australian deals

Australian business sales commonly link earnouts to EBITDA, revenue, gross profit, net profit after tax, recurring revenue, or a specific commercial milestone such as contract renewal or product launch. In some cases the earnout is measured over one year, in others over two or three years, depending on the industry and the seller’s continued involvement.

Financial metric earnouts

The most familiar structure is an earnout based on EBITDA or revenue. These are often used in professional services, technology, healthcare, and niche manufacturing transactions. A revenue-based earnout can suit recurring revenue businesses, but only if the quality of revenue is stable, the churn rate is low, and the customer base is not overly concentrated.

For software and subscription businesses, buyers may look at annual recurring revenue, monthly recurring revenue, or net revenue retention (NRR). A business with strong NRR and low churn can justify a higher multiple, but if the earnout depends on maintaining that performance after the seller exits, the risk discount can be significant.

Milestone-based earnouts

Some earnouts are tied to operational milestones, such as securing a licence, completing a development phase, or retaining a key contract. These structures can be sensible where historical earnings do not fully capture future upside. However, they create more valuation uncertainty because the outcome may depend on external approvals, customer behaviour, or staffing continuity.

How a valuer assesses the earnout component

In a valuation engagement, an earnout is generally assessed by testing the expected future cash flows against the likelihood and timing of receipt. This is similar in principle to a discounted cash flow analysis, but the focus is narrower and the target-specific assumptions are more important.

The valuer will usually consider three questions. First, how likely is the target to be met based on the business’s normalised earnings and forecast outlook? Second, what is the timing of payment, and therefore the present value impact? Third, what covenants or controls exist that may affect the seller’s ability to influence outcomes after completion?

If the earnout is based on EBITDA, the valuer should examine whether the target is based on normalised EBITDA or reported EBITDA. This matters because owner remuneration, discretionary expenses, related party charges, and one-off costs can materially affect the result. Adjustments for working capital, capex, and changes in accounting policy may also affect whether the target is achievable.

Where the business is sold on a multiple basis, the earnout is often best analysed as a bridge between the buyer’s and seller’s views of maintainable earnings. For example, if the seller believes sustainable EBITDA is $2.5 million and the buyer values the business at 5 times EBITDA, while the seller expects a 6 times outcome, the earnout may be used to reflect the difference. The valuer will test whether that gap is commercially reasonable based on sector comparables and precedent transactions.

Valuation methods and pricing logic

Earnouts are commonly evaluated using a combination of market-based and income-based approaches. Comparable transaction multiples provide context, while a discounted cash flow model can be used to estimate probability-weighted value. The appropriate method depends on the business profile, the reliability of the forecast, and the complexity of the earnout terms.

For mature businesses with predictable earnings, an EBITDA multiple may be the most practical starting point. In many Australian private market transactions, established services businesses may trade in a relatively modest multiple range, while software and recurring revenue businesses can attract higher multiples where growth, retention, and gross margins are strong. Small businesses with owner dependence or customer concentration generally attract lower multiples, which makes earnouts more common.

Where the business has a recurring revenue profile, the valuer may consider ARR multiples, NRR, gross churn, and cohort stability. A subscription business with strong retention and growth might justify a premium, but if the earnout depends on maintaining that trajectory after a change of ownership, the present value of the contingent amount may need a meaningful discount for both performance risk and lack of control.

Discounts for lack of marketability and lack of control can also be relevant, particularly where the seller receives an unsecured deferred payment and has limited influence over the post-completion business. These are not mechanical adjustments, they are valuation judgements based on the facts of the transaction.

Tax and structuring considerations for Australian owners

Earnouts can have important tax implications for Australian business owners, and the tax treatment should be considered alongside valuation. Capital Gains Tax (CGT) outcomes will depend on the deal structure, the asset being sold, and when the contingent amount is taken to have been derived. The small business CGT concessions, including the 15-year exemption and active asset rules, may be relevant where eligibility criteria are met.

GST treatment must also be considered. In some cases the sale of a business as a going concern may be GST-free, but the contract must be drafted carefully and the valuation should reflect the commercial reality of what is being transferred. If the business sale involves funds flowing through a private company structure, Division 7A on private company loans can become relevant, especially where the seller or related parties receive value in non-standard ways.

Earnouts can also create tension with tax timing, because the contractual timing of payment may differ from the economic outcome assumed in a valuation. A business valuer should not provide tax advice, but should recognise when the valuation assumptions and the tax mechanics should be reviewed together by the client’s accountant or tax adviser.

In some circumstances, the seller or related entities may also need to consider ATO market value guidance when documenting the transaction or supporting the price allocated to different assets. This is particularly relevant where the enterprise includes multiple asset classes, including goodwill, plant and equipment, intellectual property, or real property.

Division 296 and why current valuations may be needed

Division 296, which commenced on 1 July 2026, is also relevant for some business owners and SMSF trustees. It is a personal tax assessed to the individual, not the fund, and it taxes realised earnings only, not unrealised gains under the final law. The thresholds of $3 million and $10 million are indexed, and first assessments are issued in the 2027-28 year for the 2026-27 financial year.

The valuation relevance is direct. SMSFs holding business assets, business real property, or shares in a privately held company must obtain current market valuations for Division 296 purposes, including where there is an optional cost base reset to market value as at 30 June 2026. For owners considering a sale with an earnout, this means a professional valuation may be needed not only for transaction negotiations, but also for superannuation and reporting purposes.

Common mistakes buyers and sellers make

The most common mistake is treating the earnout as guaranteed consideration. It is not. A nominal earnout headline should be discounted for achievement risk, timing risk, and legal enforceability. Another frequent error is failing to align the earnout metric with the underlying value driver. For example, using revenue as the target in a business where margin quality is the real economic driver can distort behaviour and lead to disputes.

Another issue is poor drafting around normalisation adjustments. If the contract does not clearly define how owner salaries, related party charges, extraordinary items, and acquisitions will be treated, the earnout outcome can become contested. This is a valuation issue as much as a legal one, because the measurement base must be capable of being tested objectively.

Finally, sellers often underestimate the impact of post-completion control. If the buyer controls pricing, staffing, budget levels, or customer retention strategy, the seller may have limited ability to influence whether the target is hit. That should be reflected in the valuation of the contingent payment.

Conclusion

Earnouts can help bridge valuation gaps in Australian business sales, but they must be analysed carefully. The relevant question is not what the earnout might pay if everything goes well, but what it is worth today, on a probability-weighted basis, after allowing for tax, timing, and execution risk. A robust business valuation will test the earnout against forecast earnings, sector multiples, and the practical control the seller retains after completion.

If you are considering a sale, acquisition, shareholder exit, or dispute involving an earnout, InteleK Business Valuations & Advisory can assist with an independent, defensible valuation engagement tailored to Australian market conditions. Contact us for a confidential consultation and a practical assessment of how an earnout may affect the value of your business.