Earn-Out explained: The valuation bridge between buyer and seller

How earn-out clauses make company valuations fair and what entrepreneurs should pay attention to.

You've built your company, grown it, and now a sale is on the horizon. A potential buyer is interested – but you're far apart on the purchase price. The buyer sees a risk, while you see great potential. A classic negotiation situation that often leads to stagnation in M&A transactions. This is precisely where the earn-out model comes into play – a tool that has been bringing buyers and sellers closer together for years.

Earn-outs are not a new concept, but many entrepreneurs don't truly understand how they work and what risks are involved. In this article, we explain everything you need to know: What exactly is an earn-out, what are its advantages and disadvantages, and how can you, as a seller, protect yourself?

What is an earn-out? The basics

Put simply, an earn-out is this: you don't receive part of the purchase price immediately, but only later, once certain performance criteria have been met. Instead of a fixed purchase price, the buyer and seller agree on a base payment (closing payment) and an additional payment (earn-out payment) that depends on future business results.

For example: You sell your company for a base valuation of €5 million. The buyer could pay an additional €1 million if the company achieves certain EBITDA targets within the next two years. The earn-out thus bridges the valuation gap: The buyer pays less upfront, but more if the company is successful. As the seller, you participate in the company's continued success without being involved in its management.

This is precisely what makes earn-outs attractive for all parties involved. For the buyer, the risk of overpaying is reduced – they only pay more if the targets are met. For the seller, it's an opportunity to achieve a higher overall price if the company continues to perform well.

Why earn-outs? The reasons for this model

The valuation gap between buyer and seller

Almost every business transaction involves a valuation gap. The reason is simple: buyers and sellers have different perspectives on the company's future. The seller has managed the company for years, knows its strengths, its customer base, and its growth potential. The buyer, on the other hand, sees risks: Is the company's past success tied to the founder? How stable are the customer relationships? How will the market develop?

The earn-out is an elegant solution here: It creates common ground on which both parties can build. The seller receives their expected valuation, but in two parts – an immediate payment and a later, conditional payment. The buyer reduces their risk: They initially pay less and have a kind of "insurance" built in – if the targets are not met, the payment is reduced accordingly.

Continuous management involvement

Particularly in medium-sized businesses, a key reason for earn-outs is the continued involvement of the original management. If the founder or management team is to continue working with the buyer, an earn-out can be a motivating factor. The better the targets are met, the more they earn. This creates strong incentives for the coming years.

Sometimes it works the other way around: The buyer wants stability and continuity. An earn-out signals: Stay committed and maintain your performance, and you will be rewarded. This is particularly useful when the company's success factors depend heavily on individual people.

Potential KPIs for earn-outs – What buyers and sellers agree on

The core of any earn-out model is the KPIs (Key Performance Indicators) – the targets to which the payment is linked. These KPIs must be carefully selected, as they determine whether the seller ultimately receives more or less money. It is therefore essential that the KPIs are fair, objectively measurable, and transparent for both parties.

EBITDA – The most popular KPI

EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) is the most commonly used KPI in earn-out agreements. It measures the company's operating profitability—that is, how much profit the business generates before interest expenses, taxes, and depreciation are taken into account. For many buyers, EBITDA is the natural choice because it reflects true operating performance.

However, EBITDA also has a downside: its precise calculation can be complex and contentious. What is included, and what is not? How are special items treated? These are precisely the questions that often lead to post-closing disputes. Therefore, it is extremely important that the EBITDA definition is very clearly defined in the purchase agreement – with specific examples and exclusions.

Revenue

Some earn-out agreements link the payment to absolute or relative revenue targets. This is particularly useful when the company is entering a growth phase or when the buyer has aggressive expansion plans. Revenue is generally easier to measure than EBITDA, as it is clearly reported in the income statement.

The disadvantage of pure revenue targets is that they promote growth at any cost. The buyer could acquire customers who generate revenue but are sold at a loss. This creates a conflict of interest for the original management – and thus potentially within the buyer's discretion. Therefore, revenue targets are often combined with profitability targets to ensure balanced growth.

Customer loyalty and customer-specific KPIs

For many service or agency companies, customer retention rates are crucial. An earn-out, for example, could be contingent on retaining at least 80% of existing customers. This is important for the buyer to know that the company's value (which often lies in its customer relationships) won't simply disappear.

There are also other, very specific KPIs: market share, number of employees, customer acquisition costs, or industry-specific metrics. The selection depends entirely on the industry in which the company operates and which factors are actually crucial for success.

Multiple KPIs and weighting

In practice, it's often not just one KPI that's used, but several. For example, an earn-out totaling €1 million could be structured as follows: 60% depends on EBITDA targets, 30% on revenue targets, and 10% on customer retention. This makes the model more balanced and reduces the risk that the buyer will over-optimize a single KPI without considering the overall well-being of the company.

The calculation mechanism: How the earn-out really works

Many business owners read the earn-out clause in their purchase agreement and don't really understand how the calculation works. This is a major problem, because the exact calculation method can vary enormously and has a massive impact on the result.

The simple option: Percentage surcharges or discounts

The simplest option is: The company is valued at a base valuation X and a purchase price Y is paid. Additionally, it is agreed that for every euro of EBITDA exceeding a certain threshold, an additional Z euros will be paid. Example: Base valuation 5 million, plus 10x EBITDA for every euro in the first year (i.e., a maximum earn-out of 500,000 euros).

The tranche option: goals in stages

The more common approach is the tranche model. This involves several target zones: If target 1 is reached, the recipient receives €300,000. If target 2 (a higher target) is also reached, an additional €400,000 is awarded. Reaching target 3 results in a further €300,000. This not only motivates the achievement of the basic target but also leads to greater success.

The pro-rata variant: Proportional calculation

Some contracts use pro-rata calculation: If the target EBITDA was €2 million and only €1.5 million is achieved, the seller receives 75% of the maximum earn-out. This is particularly fair when there is a close correlation between the targets. However, it is important to distinguish whether the calculation is linear or whether there are thresholds (e.g., below 90% of the target, there is a 0% earn-out).

Multi-year averages

Especially with two- or three-year earn-out periods, a multi-year average is often used. This reduces volatility and potential "one-time" effects. A company might be weak in year 1 but strong in year 2 – an average would reflect this more fairly than a year-by-year calculation.

Dispute resolution and post-M&A litigation: The biggest risk for sellers

Reality shows that earn-out agreements are one of the most frequent causes of post-closing disputes in M&A transactions. After the transaction, the buyer is in control and can – consciously or unconsciously – manage the company in such a way that earn-out targets are not met. The seller is then left without direct influence and can only react.

The moral hazard problem

The core problem is so-called "moral hazard": The buyer might be rationally motivated to run the company in a way that jeopardizes the earn-out targets – because then they would have to pay less. Real-world examples:

Integration without regard for profitability: The buyer could quickly integrate the sales and administrative structures into the parent company structures, but in doing so, realize synergies, reduce costs, and thus make the acquired company unprofitable.

Aggressive pricing: The buyer could steer customers away from the acquired unit to other units within its group or massively raise prices to shrink the customer base.

Budget cuts: Investments that increase profitability in the short term but destroy growth opportunities could be made deliberately.

Accounting definitions: Even when dealing with objectively measurable metrics such as EBITDA, there is enormous leeway in the accounting and definition of items.

The dispute rate in practice

Various studies show that disputes arise in approximately 30-50% of all earn-out agreements. This is remarkably high – significantly higher than with other M&A clauses. The disputes usually arise shortly before the end of the earn-out period, when it becomes clear that the targets may not be met, or shortly after its expiration, when the final calculation is performed.

Avoidance and mitigation strategies

This doesn't mean earn-outs are bad – but they require good negotiation and clear contracts. We will explain the most important safeguards in the following sections.

Protective clauses for the seller:

Ordinary Course of Business

The critical protection against moral hazard problems lies in clear safeguard clauses. The most important is the so-called "Ordinary Course of Business" (OCB) clause. It obligates the buyer to manage the company in a normal, customary business manner – and not in a way that deliberately seeks to miss earn-out targets.

What exactly does Ordinary Course of Business mean?

A good OCB clause stipulates that the buyer must manage the company or business like a normally prudent business manager – without taking unusual, non-ordinary actions that could jeopardize the objectives. Specifically, this means that the buyer, for example, must not:

• Budgets or resources may be drastically reduced if this does not correspond to previous practice.

• It is permissible to deliberately damage core customer relationships in order to reduce sales.

• Integrating the business of violence into larger corporate structures is permitted without preserving its function and performance.

• It may change price and terms structures if this is known to drive away customers.

The pitfalls in practical implementation

Sounds good, but there's a major problem: How do you later prove that the buyer violated the OCB clause? It's often difficult to show that a business decision was "not ordinary." The buyer will say that cutting costs or accelerating integration made strategic sense. The burden of proof lies with the seller, and that's often very difficult in court or arbitration.

Therefore, it is important to make the OCB clause even more precise: Instead of vague formulations like "Ordinary Course of Business", there should be concrete guarantees, such as "The buyer will maintain at least 90% of the marketing budgets" or "The buyer will not change the salary structures of the management keys without the seller's consent".

Other important protective clauses

Cap and floor: The earn-out should have an upper and lower limit. This ensures predictability for both sides – the buyer knows the maximum amount they will pay, and the seller knows the minimum amount they will receive.

Escrow accounts: The buyer can be required to deposit the earn-out into an account (escrow) so that it is not simply "gone" in case of a dispute.

Adjustment mechanisms: The contract should stipulate that certain items are not included in the EBITDA calculation (e.g., one-off effects, acquisition costs of the buyer) to avoid manipulation.

Audit rights: The seller should have the right to review the calculations and, if necessary, to engage an independent auditor.

Change of Control Clauses: If the buyer is sold, the original seller may need additional protection to ensure that the new buyer fulfills the earn-out obligations.

Typical durations of earn-out agreements

Another aspect of the earn-out structure is the duration – how long is the earn-out measured?

One-year earn-outs

A 12-month earn-out is relatively short. It's often used when business results are highly predictable or when quick clarity is needed. The advantage: The seller knows quickly how much they'll receive. The disadvantage: A year is relatively short to truly validate long-term strategies. There's also the risk that individual successful or unsuccessful months will skew the results.

Two-year earn-outs

The gold standard term is two years. This is long enough to observe the business fundamentals, but not so long that the seller has to wait too long for payment. Two years also provides enough data points to smooth out volatility and year-on-year effects. Many M&A studies show that two years represents the optimal balance between fairness and feasibility.

Three-year and longer earn-outs

Three-year earn-outs are less common but are sometimes used in very large transactions or when integration is time-consuming. The advantage is that it's possible to see real operational changes. The disadvantage is obvious: the seller has to wait three years, and the dependence on the buyer is even greater. The likelihood of disputes is also higher with a longer term.

For most medium-sized companies, a maximum contract term of 24 months is recommended. This allows sufficient time for a fair assessment without the seller bearing the risk for too long that the buyer's management will not adhere to the agreements.

Advantages and disadvantages of earn-outs:

An honest analysis

The advantages for the seller

Higher overall purchase price: The most obvious argument – if you believe in the company's success, an earn-out allows for a significantly higher overall purchase price. Instead of perhaps 5 million, the deal could be worth 6.5 million with an earn-out.

Bridging valuation gaps: Earn-outs make it possible for deals to materialize that would otherwise fail. When buyers and sellers have very different views on the future, an earn-out can be the compromise.

Continuity and stability: If you remain in management, an earn-out provides you with financial security and incentives to continue leading the company successfully. The buyer also benefits from your experience and motivation.

The disadvantages for the seller

Dependence on the buyer: You no longer have control over the company, but must hope that the buyer manages it correctly. This is a major psychological and financial risk.

Dispute risks: As previously discussed, earn-out disputes are extremely common. Even if you are in the right, disputes are expensive and time-consuming.

Lack of transparency: The buyer might not report transparently or could interpret the figures to their advantage. You have to trust them or conduct expensive audits.

Prolonged financial uncertainty: Instead of a definitive price, you have a possible range – this makes financial planning for the next few years more difficult.

The advantages for the buyer

Risk allocation: The buyer pays less upfront and bears less risk if the deals fail or do not deliver the expected results.

Alignment of incentives: The seller is still motivated to make the company successful – this is positive for both sides in the post-closing phase.

Better financing options: With an earn-out, the buyer can finance the transaction more easily because the upfront payment is lower.

The disadvantages for the buyer

Future payment obligations: The buyer bears the payment obligation in the future – this burdens future cash flows and can complicate balance sheets.

Governance and complexity: The buyer must perform transparent calculations and prepare for potential disputes – this costs time and resources.

Restricted Management: If the earn-out is tied to the old management, the buyer has less freedom to carry out the integration and restructuring as he sees fit.

Practical tips for entrepreneurs when negotiating earn-outs

1. Realistically assess the valuation gap

Before entering into intensive negotiations, you need to be honest with yourself: Where is the real valuation gap, and how realistic is your optimism about the future? Agreeing to a €2 million earn-out and then only achieving €500,000 will lead to frustration and legal disputes. It's better to agree on a smaller earn-out that is more likely to be achieved.

2. Carefully select and define KPIs

Use KPIs that you, as a manager, understand and can control – but also that the buyer cannot easily manipulate. EBITDA is popular, but very definition-intensive. Combine it with other KPIs (revenue, customer retention) to mitigate the risk of manipulation.

3. Protect yourself legally

Work with experienced M&A lawyers to include robust protective clauses (OCB, audit rights, precise definitions) in the contract. This costs money, but can potentially save many times that amount later through dispute prevention.

4. Negotiate a reasonable contract duration.

24 months is optimal in most cases. Longer terms are riskier for you (greater dependence on the buyer), while shorter terms may be unfair for measuring true performance.

5. Escrow and Collateral

Negotiate that the buyer places the potential earn-out funds into an escrow account. This gives you the assurance that the money cannot simply be spent.

6. Management Retention

If you or your management team are to remain with the company, link the earn-out to clear agreements regarding your future roles, budgets, and autonomy. This will give you more control over achieving targets.

Conclusion: Earn-out as a useful but complex tool

Earn-out agreements are a powerful tool in M&A for bridging valuation gaps and creating a fair distribution of risk between buyer and seller. They offer entrepreneurs the chance to achieve a higher overall purchase price, but also carry real risks – above all, dependence on the buyer and a high susceptibility to disputes.

The good news: With careful contract drafting, clear KPI definitions, robust protective clauses, and professional legal support, these risks can be significantly mitigated. A well-structured earn-out is a win-win – the buyer reduces their risk, you as the seller participate in the company's continued success, and both sides have clear, measurable goals.

When faced with earn-out issues in your business succession or M&A process, the most important rule is: Don't act out of emotional disappointment ("the buyer isn't offering enough"), but negotiate rationally and systematically. The best deals don't result from compromising on contract quality, but from intelligent, mutually acceptable structuring.

A well-structured earn-out is not a sign of failed negotiations – it is a sign of intelligent risk sharing and mutual trust.