Question

What is an earn-out, and why do acquisitions use them?

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Answer

A structure where part of the purchase price is paid later, conditional on the business hitting agreed targets. It exists to bridge a disagreement about value: the seller believes the business will perform, the buyer is not willing to pay for performance that has not happened yet.

How it works. An initial payment at completion, then further payments over a period — commonly one to three years — calculated against a metric such as revenue, gross profit or EBITDA, sometimes with thresholds, caps and sliding scales.

Why both sides accept it:

It closes a valuation gap that would otherwise kill the deal.

It retains the seller, who usually stays on and remains motivated — which matters enormously where the business depends on them.

It transfers risk to the party better placed to judge it.

Why earn-outs generate so many disputes, and they do so at a high rate:

The buyer controls the business during the earn-out period, and buyer decisions affect the metric. Reallocating costs, changing sales priorities, integrating systems, or investing for the longer term can all reduce short-term performance legitimately — and reduce the seller's payment.

Accounting definitions. Whose accounting policies apply, how group overheads are allocated, and how shared costs are treated can move the number substantially. Revenue-based earn-outs have fewer arguments than profit-based ones, for exactly this reason.

The seller's authority. A seller responsible for hitting a target but without the authority to run the business is in an impossible position.

Conflicting incentives. The seller is pushed toward short-term results at the expense of the business the buyer just bought.

What a well-drafted earn-out contains:

A precisely defined metric, with the accounting treatment specified.

Protective covenants obliging the buyer to run the business normally and not to act so as to reduce the earn-out.

Information rights, so the seller can see the figures.

An acceleration clause if the business is resold or the seller is dismissed without cause.

An independent expert to determine disputes quickly.

General information, not legal or financial advice.

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