Letters of Intent in Business Transactions: What They Mean Legally

A letter of intent — also called an LOI, memorandum of understanding (MOU), or term sheet — is one of the first documents exchanged in many significant business transactions. Whether you are buying or selling a business, entering a commercial real estate transaction, negotiating a major supply agreement, or forming a joint venture, an LOI outlines the key terms both parties have tentatively agreed on before a formal contract is drafted. But here is what many business owners do not realize: even when an LOI says it is non-binding, some of its provisions may create binding legal obligations. Understanding the legal significance of letters of intent can protect you from unexpected commitments and costly disputes.

What Is a Letter of Intent?

A letter of intent is a document that records the preliminary understanding between parties to a transaction. It is typically signed before the parties have completed due diligence, negotiated all details, or drafted a final agreement. LOIs serve several practical purposes:

• They establish a common understanding of the deal structure and key terms
• They signal serious intent, encouraging each party to invest time and resources in due diligence
• They provide a framework for negotiating the definitive agreement
• They may grant exclusivity, preventing one party from negotiating with third parties during a defined period
• They can formalize confidentiality obligations during the deal process

LOIs are used across many types of transactions, including mergers and acquisitions (M&A), commercial leases, real estate purchases, franchise agreements, licensing arrangements, and strategic partnerships.

The Binding vs. Non-Binding Distinction

The central legal question in any LOI is which provisions are binding and which are not. Most LOIs are drafted as predominantly non-binding, meaning the parties do not intend to be contractually obligated to complete the transaction based on the LOI alone. However, virtually every LOI contains at least some provisions that are explicitly made binding.

Non-Binding Provisions

The economic and structural terms of the deal — purchase price, payment structure, representations and warranties, closing conditions, allocation of liabilities — are typically marked as non-binding in an LOI. These terms are subject to further negotiation and will only become binding when incorporated into a definitive agreement (such as an Asset Purchase Agreement, Stock Purchase Agreement, or Merger Agreement) signed by both parties.

The non-binding nature of these provisions means that either party generally can walk away from the deal — or insist on different terms — without breaching the LOI, as long as they do not violate any binding provisions while doing so.

Binding Provisions

Even in a predominantly non-binding LOI, certain provisions are almost always made expressly binding. Common binding provisions include:

• Exclusivity (no-shop) clause: The seller agrees not to solicit or negotiate with other potential buyers for a specified period, giving the buyer time to complete due diligence
• Confidentiality: Both parties agree to keep the existence of the deal and any information exchanged confidential
• Expense allocation: Each party agrees to bear its own costs in connection with the transaction, or specifies which party will pay certain shared costs
• Governing law and dispute resolution: Specifies which state’s law governs the LOI and how disputes will be resolved
• Termination: Sets out how and when the LOI expires or can be terminated

These provisions are enforceable as contracts, even if the main deal terms remain non-binding. Violating an exclusivity clause or breaching the confidentiality provision of an LOI can expose you to a lawsuit and damages.

When a Non-Binding LOI Becomes Legally Binding

Courts have found parties bound by LOIs they believed were non-binding in several circumstances. Business owners should be aware of these legal risks.

Obligation to Negotiate in Good Faith

Even when an LOI is non-binding, some courts have found that it imposes a duty to negotiate in good faith toward a definitive agreement. If a party enters negotiations with no intention of completing the deal, or walks away for pretextual reasons after the other party has invested substantially in due diligence and deal preparation, courts in some jurisdictions have awarded damages for breach of the implied duty to negotiate in good faith — particularly where the LOI itself included language committing the parties to negotiate in good faith.

The duty of good faith in negotiations varies significantly by state. Delaware courts are generally less likely to impose a standalone good faith negotiating duty than courts in some other jurisdictions. Before signing an LOI that includes an express good faith negotiating commitment, understand what that obligation means under the governing law.

Ambiguous or Missing Non-Binding Language

If an LOI does not clearly state that its deal terms are non-binding, courts may look at the substance and specificity of the terms to determine intent. A highly detailed LOI that covers price, payment terms, closing conditions, and all material terms in specific detail may be found binding even without explicit non-binding language. Vague or general language about intent to negotiate is more clearly non-binding than a detailed term sheet that reads like a contract.

Conduct After Signing

How the parties behave after signing the LOI can affect its legal status. If both parties begin performing under the terms of the LOI — making payments, transferring assets, or beginning work — before a definitive agreement is signed, a court may find that their conduct created a binding contract based on the LOI terms.

The Exclusivity Clause: Your Most Important Protection

If you are a buyer in an M&A transaction, the exclusivity — or no-shop — clause is often the most valuable binding provision in the LOI. During the exclusivity period, the seller is prohibited from soliciting, entertaining, or negotiating with other potential buyers. This gives the buyer time to complete due diligence without fear that a competing bid will appear.

Key negotiating points in an exclusivity clause include:

• Duration: Buyers want a longer exclusivity period (60–90 days is common in M&A); sellers want it shorter to preserve optionality
• Scope: Does exclusivity apply only to sale transactions, or also to other types of strategic transactions like investments or partnerships?
• Carve-outs: Sellers may insist on the ability to respond to unsolicited bids that materially exceed the LOI price (a fiduciary out, common in public company deals)
• Consequences of breach: What damages can the buyer recover if the seller violates exclusivity? Some LOIs specify a break-up fee or liquidated damages

Due Diligence Period and the LOI

Most LOIs in M&A and real estate transactions specify a due diligence period during which the buyer has the right to investigate the target — reviewing financial records, contracts, legal matters, real property condition, and other material information. The LOI typically specifies:

• How long the due diligence period lasts
• What access the buyer has to information and personnel
• Whether the buyer has the right to terminate the deal based on due diligence findings (and whether they lose any deposit if they do)
• Whether the seller must represent that the information provided is complete and accurate

Sellers should be careful about LOIs that grant overly broad due diligence rights without corresponding obligations on the buyer to proceed in good faith. Buyers should ensure the LOI gives them enough time and access to conduct meaningful due diligence before they are expected to commit to the deal.

Common LOI Mistakes Business Owners Make

Treating the LOI as a Formality

Many business owners treat the LOI as a preliminary non-binding formality and pay less attention to its terms than the final agreement. This is a mistake. The LOI sets the framework for the entire negotiation — and once you agree to price, structure, and exclusivity in the LOI, it becomes very difficult to reopen those issues in the definitive agreement negotiation without souring the relationship and losing credibility.

Signing Without Understanding the Binding Provisions

Business owners sometimes sign LOIs believing the entire document is non-binding — and then are surprised to face legal exposure when they breach the exclusivity clause or share confidential information received during due diligence. Read every provision of the LOI carefully, identify which ones are binding, and understand what you are committing to.

Not Consulting Legal Counsel Before Signing

Many LOIs are presented as relatively simple documents, and there is often pressure to sign quickly. But the consequences of LOI terms can be substantial. Always have a business attorney review the LOI before you sign, particularly for any transaction involving significant money or strategic importance. The cost of an attorney’s review at the LOI stage is far less than the cost of resolving a dispute over LOI obligations after the fact.

Failing to Specify What Happens If the Deal Falls Apart

LOIs should address what happens when the deal does not close: who keeps any deposit or earnest money, which party pays shared deal costs, and whether any provisions survive termination. Without clear termination and post-termination provisions, parties may dispute obligations long after negotiations have ended.

LOIs in Specific Transaction Types

M&A Transactions

In business acquisitions, the LOI (also called a term sheet) typically covers purchase price and structure (asset vs. stock deal), payment terms (cash at closing, earnout, seller financing), representations and warranties, indemnification framework, closing conditions, exclusivity, and the expected timeline to closing. Most of these terms are non-binding, but the LOI’s framing of the deal structure — especially asset vs. stock and price — sets the tone for the entire transaction.

Commercial Real Estate

In commercial real estate purchases and leases, LOIs are extremely common and similarly structured. For a lease, the LOI will outline rent, term, renewal options, tenant improvement allowances, and responsibilities for operating expenses. For a purchase, it will cover price, deposit, inspection period, and closing timeline. Real estate LOIs are almost always explicitly non-binding on the main deal terms, but binding on exclusivity and confidentiality.

Joint Ventures and Strategic Partnerships

LOIs for joint ventures and partnerships outline the proposed ownership structure, capital contributions, governance rights, intellectual property sharing, and exit provisions. These LOIs tend to be somewhat looser and more conceptual than M&A LOIs, because the parties often have not yet worked out the details. The risk of implied good faith obligations is higher in this context if the parties have been conducting business together informally.

Key Provisions to Include in Any LOI

• Clear statement identifying which provisions are binding and which are non-binding
• Price and deal structure (non-binding)
• Exclusivity period and scope (binding)
• Confidentiality obligations (binding)
• Due diligence period and access rights (non-binding or binding, depending on negotiation)
• Expense allocation (binding)
• Termination rights and consequences (binding)
• Expiration date of the LOI
• Governing law and dispute resolution (binding)
• No obligation to consummate the transaction (if the deal terms are intended to be non-binding)

Conclusion

A letter of intent is far more than a handshake. It shapes the trajectory of your deal, creates binding legal obligations on key points, and sets the terms from which both sides will negotiate the final agreement. Whether you are a buyer, seller, landlord, tenant, or strategic partner, approach the LOI with the same diligence you would bring to any significant legal document — because its consequences are real, even when it says non-binding on the tin.