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LOI and NDA in a company acquisition: getting the letter of intent and confidentiality right

How to draft the confidentiality agreement and the letter of intent in a company acquisition: data protection, exclusivity, binding effect and pre-contractual liability.

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BRANDAUER Rechtsanwälte

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14 June 2026 · Mag. Bernhard Brandauer, Rechtsanwalt

At the start of almost every company transaction stand two documents: the confidentiality agreement and the letter of intent. Both are often treated as a mere formality and signed quickly. Yet it is precisely these first steps that decide whether your information is protected and whether you commit yourself earlier than you actually intend.

This post explains the task of the confidentiality agreement and the letter of intent in the purchase or sale of a company. The focus is on the protection of sensitive data before due diligence, the separation of binding and non-binding parts of the letter of intent and the typical clauses on exclusivity, allocation of costs and non-solicitation.

Anyone who knows these basics steers the negotiation deliberately from the outset. From a lawyer perspective the confidentiality agreement and the letter of intent set the framework for everything that follows: from due diligence through the warranty catalogue to completion of the transaction.

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01 Question 1

Did you sign a confidentiality agreement before disclosing sensitive company data?

Only a signed confidentiality agreement protects trade secrets, customer lists and financial figures that you disclose in the data room.

All paths at a glance

Overview of all answers.

01

Without a confidentiality agreement you disclose company data unprotected.

Anyone who discloses financial figures, customer lists or technical know-how without a signed confidentiality agreement loses control over this information. Conclude a confidentiality agreement with a clear purpose limitation, a contractual penalty and a deletion duty before the first exchange of data. Our checklist on confidentiality and the data room offers guidance.

Only with an effective confidentiality agreement can the review of the company begin without unnecessary risk.

02

The framework is in place, now the clean drafting of the individual clauses matters.

If confidentiality and the letter of intent are cleanly separated, the negotiation is well set up. Check in addition the duration of the exclusivity, the scope of a non-solicitation clause and the rule on the allocation of costs in case of a break-off. The timetable up to signing of the purchase contract should also be fixed.

A short legal review ensures that the letter of intent does not weaken your position in the further negotiation.

03

The binding effect is unclear, sharpening it is advisable.

An unclearly worded letter of intent can bind unintentionally or trigger pre-contractual liability. Such points can be sharpened before signing: an express clarification that the purchase obligation remains non-binding, a precise list of the binding clauses and a rule on the fair break-off of the negotiation.

Have the letter of intent reviewed before you sign. A signed text binds you to its wording.

The confidentiality agreement as the first protection

Before a prospective buyer gains insight into financial figures, contracts and technical know-how, a confidentiality agreement should be signed. It obliges the other side to use the disclosed information only to review the transaction and not to pass it on to third parties. For the seller it is the most important protection, because trade secrets once revealed cannot be retrieved.

A robust confidentiality agreement governs more than mere secrecy. It determines the purpose of disclosure, the circle of persons authorised to access the data, the duration of the duty and the return or deletion of the documents after a break-off. A contractual penalty is often agreed, because the actual damage from a breach is hard to prove. Our focus page on due diligence offers more depth.

A non-solicitation clause is also sensible. It prohibits the other side from poaching key staff of the target company during and after the review. The concept of the confidentiality agreement we explain in more depth in the glossary.

The letter of intent: framework without a duty to buy

The letter of intent, often called a term sheet, records the status of the negotiation reached. It describes the planned deal in broad terms: the object of purchase, a price expectation or range, the planned process and the timetable. As a rule it is not yet meant to create a duty to conclude the purchase contract.

Decisive is the clean separation between binding and non-binding parts. Usually the actual purchase obligation remains non-binding, because the outcome of due diligence is still open. Binding, by contrast, are often confidentiality, an exclusivity for a certain period, the bearing of each party own costs and the agreement on governing law and jurisdiction. This separation should be expressly stated in the text.

The letter of intent also steers the further process. It can set out which steps follow up to the purchase contract, such as due diligence, the drafting of the warranty catalogue and the negotiation of the conditions to completion. How these steps connect is shown in the post on the due diligence checklist.

Binding effect and pre-contractual liability

Even a letter of intent meant to be non-binding is not without legal effect. In Austria, the mere taking up of contract negotiations can create a pre-contractual obligation. Whoever breaks off negotiations without good cause after having raised a legitimate reliance on conclusion in the other party may be liable for the reliance damage under the principles of culpa in contrahendo.

The choice of words in the letter of intent is therefore important. Wording that suggests a firm agreement can strengthen the binding effect, even if that was not intended at all. An express clarification that the purchase obligation only arises with signing of the purchase contract creates clarity here.

Conversely, the deliberately binding clauses should actually be enforceable. An exclusivity without a clear duration or a non-solicitation clause without a contractual penalty loses value in practice. The concept of pre-contractual liability we explain in the glossary on culpa in contrahendo.

The most important clauses

What matters in confidentiality and the letter of intent

These clauses decide on your protection and your commitment. Check each one before you sign.

Clauses in the confidentiality agreement and the letter of intent with recommended drafting and possible risk
Clause Recommended Possible risk
Confidentiality Purpose limitation and penalty Clear use only for the review including a deletion duty Disclosure without an effective penalty
Exclusivity Time-limited and clear Negotiation with one party only for a fixed period Unlimited or unclear commitment
Binding effect Clear separation of the parts Purchase obligation expressly non-binding Unclear wording with a liability risk
Non-solicitation Backed by a penalty Protection of the key staff of the target company A mere declaration of intent without consequence
Costs and break-off Fair cost allocation governed Each side bears its own costs Dispute over costs after a break-off

A contractual penalty should remain reasonable in amount. An obviously excessive penalty can be reduced by a court and thus weakens the intended protection.

Caution with premature disclosure: Whoever passes on sensitive data without a signed confidentiality agreement or signs a misleadingly binding letter of intent risks the loss of trade secrets or pre-contractual liability. Have both documents reviewed before signing. Booking an initial consultation (72 euro) can quickly bring clarity.

Different interests of seller and buyer

Seller and buyer pursue opposing aims in this phase. The seller wants to protect its information, commit as little as possible and keep the exclusivity short. The buyer wants a reliable framework, an exclusivity long enough for due diligence and a letter of intent that orders the timetable up to completion.

A balanced text takes account of both interests. For the seller the scope of confidentiality, the non-solicitation clause and a measured exclusivity are central. For the buyer it matters that the letter of intent secures the course of the review without already obliging it to buy. Anyone on the seller side will find further guidance in the post on vendor due diligence.

In any case it is worth thinking of both documents together. The confidentiality agreement and the letter of intent interlock and together form the entry into the transaction. An initial assessment of the risks is provided by our M&A transaction risk profile.

Frequent questions

LOI and NDA in a company acquisition.

Is a letter of intent legally binding? +

As a rule the letter of intent is not yet meant to create a duty to conclude the purchase contract. Individual clauses, however, are usually deliberately binding, such as confidentiality, exclusivity and the allocation of costs. Decisive is the express separation of binding and non-binding parts, because an unclear wording can trigger an unintended commitment.

When should the confidentiality agreement be signed? +

The confidentiality agreement should be signed before the first disclosure of sensitive data, that is before the data room is opened. Whoever passes on information beforehand without protection loses control over it. A good agreement governs purpose limitation, a contractual penalty, the duration and the deletion of the documents after a break-off.

Can I still withdraw after signing the letter of intent? +

As long as the purchase obligation remains non-binding, you can withdraw from the transaction. A break-off without good cause can, however, lead to compensation of the reliance damage under the principles of pre-contractual liability if the other side was entitled to rely on conclusion. A fair break-off rule in the letter of intent creates clarity here.

Topics
LOINDAConfidentialityLetter of intentExclusivity

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