Inside the Letter of Intent: What's Binding, What's Not

The signing of a Letter of Intent (LOI) represents a pivotal moment in any M&A transaction. For many mid-market business owners, it feels like reaching the summit: a price has been agreed, chemistry is strong, and the finish line is in sight. However, in professional M&A, the LOI is not the end of the journey; it is the start of the most high-stakes phase of the process.

There is a common misconception that because an LOI is largely "non-binding," it is merely a gentlemen's agreement. This is a dangerous simplification. While the headline price and structure are typically non-binding, several critical clauses are legally enforceable from the moment you sign. These clauses can strip a seller of their leverage, lock them into a single track for months, and leave them vulnerable to "re-trading"—a common tactic where buyers lower their offer once the seller is committed and the competitive pressure has evaporated.

The Paradox of Binding and Non-Binding Terms

A standard LOI is a hybrid instrument. The "commercials"—the Enterprise Value, the payment terms, and the deal perimeter—are non-binding to allow for adjustments based on what the Due Diligence (DD) process uncovers. This flexibility protects both parties if skeletons are found in the closet.

However, the "procedural" elements are almost always legally binding. These typically include exclusivity, confidentiality, expense allocation, and the governing law. The paradox is that sellers often spend 90% of their time negotiating the non-binding price and only 10% on the binding exclusivity. Yet, it is the exclusivity period that will dictate the power dynamics of the next 60 to 90 days. If the LOI is poorly drafted, the seller hands over their greatest weapon—the ability to walk away to a competing bidder—for a price that the buyer is not yet legally obligated to pay.

Exclusivity: The Seller’s Strictest Constraint

The exclusivity clause (or "no-shop" provision) is the most valuable asset for a buyer. It prevents the seller from soliciting or entertaining other offers for a specified period. From the buyer’s perspective, this is essential; they are about to spend hundreds of thousands of pounds on legal, financial, and commercial due diligence and need to know the carpet won't be pulled from under them.

For the seller, however, exclusivity creates a "valuation vacuum." Once you sign, you are off the market. If the buyer discovers a minor issue during DD and demands a £500k price reduction, the seller faces a difficult choice: accept the haircut or kill the deal and start from scratch with a "tainted" business that failed its first sale attempt.

To mitigate this, advisors at Samhild recommend three protections:

1. Short durations: Limit exclusivity to 45 or 60 days, with extensions only granted if the buyer has met specific milestones.
2. Hard triggers: Exclusivity should automatically expire if the buyer attempts to reduce the price without a justifiable "material" discovery.
3. Pre-qualified certainty: Never grant exclusivity unless the buyer has provided a detailed "Sources and Uses" table, proving they have the funds ready.

Defining the "Debt-Free" Reality

One of the most common friction points in mid-market deals is the transition from Enterprise Value (the headline price) to Equity Value (the cash that actually hits the seller's bank account).

An LOI that simply states a price of "£20 million" is dangerously vague. To avoid late-stage disputes, the LOI must define precisely what constitutes "debt" and "debt-like items." Will the buyer consider long-term leases as debt? What about deferred tax liabilities or unfunded pension obligations?

Furthermore, the "Normalised Working Capital" target must be established. Buyers often try to set an artificially high target for the working capital that must stay in the business at closing, effectively lowering the final price. By defining the methodology for calculating this target (e.g., a 12-month rolling average) within the LOI, the seller protects themselves from "cash-stripping" tactics during the final SPA negotiations.

Confidentiality and Non-Solicitation

While a Non-Disclosure Agreement (NDA) is usually signed early in the process, the LOI should reinforce these protections as the buyer gains access to more proprietary data. In the mid-market, your most valuable assets are often your people and your customers.

A robust LOI must include a binding "non-solicitation" clause. This prevents the buyer—who may be a competitor—from hiring your key staff or approaching your customers if the deal falls through. Without this, the due diligence process essentially becomes a roadmap for a competitor to dismantle your business from the inside. This clause should remain in effect for at least 12 to 24 months following the termination of talks.

The Importance of Materiality Thresholds

When the buyer starts their due diligence, they will find things that aren't perfect. That is the nature of business. The LOI should ideally set the tone for how these findings will be handled by introducing the concept of "materiality."

Rather than allowing the buyer to renegotiate for every small discrepancy, the LOI can state that only findings that impact the company's valuation by more than a certain percentage (the "de minimis" threshold) will lead to a price discussion. This prevents "death by a thousand cuts" during the final weeks of the transaction.

Conclusion: Preparation as Leverage

The LOI is the foundation of the deal. If the foundation is shaky, the entire transaction will likely lean in the buyer’s favour. The goal for a seller is to convert the competitive tension of the early marketing phase into a detailed, protective document that acts as a "mini-contract."

At Samhild, we advise our clients to treat the LOI with the same gravity as the final Share Purchase Agreement. The best time to negotiate is when you have three interested parties and haven't signed anything. Once the ink is dry on the exclusivity clause, the clock is ticking, and the leverage has shifted.

Key LOI Clauses: Binding vs. Non-Binding

Understanding which elements of an LOI are legally enforceable is crucial for protecting your interests. The table below outlines typical binding and non-binding clauses.