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Purchase price adjustment in a company acquisition: net debt, working capital and the bridge to equity value

Purchase price adjustment in a company acquisition: enterprise value, equity value, net debt, working capital, completion accounts and locked box.

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BRANDAUER Rechtsanwälte

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Every transaction is handled by a coordinated team of lawyers, legal staff and specialists. In company acquisition matters we look at structure, contract, tax and liability together.

21 June 2026 · Mag. Bernhard Brandauer, Rechtsanwalt

The agreed purchase price for a company is rarely the amount that finally flows. Between the first price idea and the actual payment stands a mechanism that reflects the value of the company at the relevant date. Anyone who does not understand this mechanism signs a price whose final amount they do not know.

This post explains the two common routes to determining the purchase price: completion accounts with a set of accounts at completion, and the locked box with a fixed date in the past. The focus is on the bridge from enterprise value to equity value, the role of net debt and working capital and the frequent dispute over their classification.

From a lawyer perspective the adjustment clause decides who bears the economic risk between signing and completion. It therefore deserves to be negotiated just as carefully as the warranty catalogue or the conditions to completion.

Classify your price mechanism

Is your purchase price robustly determined?

Answer one or two questions on the price mechanism and the definitions. You receive an initial classification of the most important points to check before signing.

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01 Question 1

Is it already settled whether the price will be handled via completion accounts or a locked box?

Completion accounts determine the price after a set of accounts drawn up at completion. The locked box fixes the price on the basis of a past balance sheet and then only protects against value leakage.

All paths at a glance

Overview of all answers.

01

Without a chosen mechanism it remains open who bears the risk up to completion.

Completion accounts and the locked box allocate the economic risk between signing and completion differently. With the locked box the buyer bears the development from the effective date, but knows the price early. With completion accounts the price only becomes final after completion, but the buyer pays the actual position. Settle this fundamental question before you negotiate figures.

An initial orientation on price structure is provided by our post on the earn-out clause.

02

Mechanism and definitions are in place, now the clean execution matters.

If the mechanism, the net debt definition, the target value for working capital and a worked example are agreed, the purchase price is robustly determined. Check in addition the deadline for delivering the completion figures, the procedure for objections and the appointment of an expert determiner for the dispute case.

A short legal review ensures that the adjustment clause is also enforceable when it counts.

03

Open definitions are the most frequent source of price disputes.

If individual items of net debt or working capital remain open, the conflict shifts to the time after completion. Sharpen the wording before signing: a conclusive list of the items of net debt, a precise definition of working capital including a target value and a worked example that both sides can rely on.

Have the adjustment clause reviewed before signing. An unclear formula costs time and money later.

From enterprise value to equity value

In the market a company is usually valued via its enterprise value. This value describes the operating business independent of its financing. What is paid, however, is the value of the equity, the equity value. The transition from one to the other is called the bridge, and it is the core of every purchase price determination.

The bridge follows a simple principle: from the enterprise value the net financial debt is deducted and the working capital is offset against an agreed target value. The underlying assumption is cash-free and debt-free. The seller thus hands over the company without surplus cash and without financial debt, both of which are settled in the price.

Net debt comprises the interest-bearing liabilities less the freely available cash. Working capital is the current assets tied up in ongoing operations, simplified the receivables and inventories less the short-term liabilities. How to secure these figures in the contract is shown in our post on the warranty catalogue in the purchase contract.

Completion accounts: settlement at completion

With the completion accounts method the purchase price is first paid on the basis of estimated figures and then settled precisely after completion. For this one side, usually the buyer, draws up a set of accounts as at the completion date. From these accounts result the actual figures for net debt and working capital, which are then offset against the estimate and the target value.

The other side reviews the accounts presented and can raise objections within a deadline. If differences remain open, an independent expert determiner decides, as a rule an audit firm. This procedure should be governed precisely in the contract: deadlines, the form of objections, the choice of the expert and the bearing of the expert costs.

The advantage lies in accuracy. The buyer pays the price that corresponds to the actual state at completion. The disadvantage is the later certainty over the final amount and the effort of the accounts procedure. How completion itself runs is covered in the post on the conditions to completion.

Locked box: a fixed date in the past

The locked box reverses the logic. The purchase price is determined definitively on the basis of an audited balance sheet at a date in the past, the so-called locked-box date. From this date the economic performance of the company is deemed to be for the account of the buyer, even though completion takes place only later.

Because the price is already fixed, no accounts at completion are needed. Instead a leakage clause protects the buyer against value flowing improperly to the seller after the date, for example through dividends, advisory fees or intra-group payments. Permitted outflows, the permitted leakage, are expressly named.

For the time between the date and completion, interest is often agreed, the so-called equity ticker. It compensates for the fact that the seller already runs the company for the account of the buyer but has not yet received the money. The advantage of the locked box is early price certainty and lower effort, the disadvantage lies in the reliance on the balance sheet at the date.

The two price mechanisms

Completion accounts and locked box compared

Both routes lead to a fair price but allocate risk and effort differently. Check which one suits your transaction.

Comparison of the price mechanisms by effective date, risk, effort, protective mechanism and dispute resolution
Criterion Completion accounts Locked box
Effective date Day of completion Accounts are drawn up after completion Fixed date in the past before signing
Price certainty Only after settlement The final amount is set later The price is fixed already at signing
Transfer of risk With completion Buyer pays the actual position Already from the locked-box date to the buyer
Protective mechanism Review of the accounts Objection against the figures presented Leakage protection and equity ticker
Dispute resolution Expert determiner Independent review of open differences Dispute usually only about improper outflows

Which mechanism fits depends on the quality of the figures, the timetable and bargaining power. In practice the locked box increasingly prevails where the data is clean.

Caution with unclear definitions: The most expensive dispute after completion rarely arises over the method but over the classification of individual items of net debt and working capital. An imprecise formula without a target value and a worked example can swallow the entire saving from the negotiation again. Have the adjustment clause reviewed before signing. Booking an initial consultation (72 euro) can quickly bring clarity.

The dispute over classification as the main risk

Whether a particular item counts as net debt or working capital or as an ordinary operating position decides directly on the amount of the purchase price. This is exactly where the greatest risk lies. Is a short-term liability part of working capital or financial debt? Do provisions, deferred taxes or open lease liabilities count towards net debt? After completion such questions can only be litigated.

Prevention is possible through a precise definition. The contract should list conclusively which items belong to net debt, define working capital clearly and set a target value against which the offset is made. A worked example on the basis of the latest available figures shows both sides how the formula is meant and later serves as an aid to interpretation.

The accounting principles also need to be governed. Are the accounts drawn up by the same methods as in the past, or do special valuation rules apply? An initial assessment of the risks of your transaction is provided by our M&A transaction risk profile.

Frequent questions

Purchase price adjustment, net debt and working capital.

What does cash-free and debt-free mean? +

The cash-free and debt-free assumption means that the enterprise value reflects the operating business without surplus cash and without financial debt. In the transition to equity value the net financial debt is deducted and working capital is offset against a target value. The buyer thus pays for the business, not for the incidental financial position at the relevant date.

When is the locked box more sensible than completion accounts? +

The locked box fits where robust and audited figures at a recent date are available and both sides want early price certainty. It saves the effort of accounts at completion. Completion accounts are sensible where the figures are uncertain or the buyer wants to settle the actual net debt and working capital at completion.

Who decides in a dispute over the completion figures? +

With completion accounts the contract usually provides for an independent expert determiner, mostly an audit firm. The expert decides the open differences with binding effect, without a court having to be involved. The contract should govern the choice, procedure and cost allocation of the expert precisely so that the dispute can be settled swiftly.

Topics
Purchase priceNet debtWorking capitalLocked boxCompletion accounts

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