In middle-market M&A, the Letter of Intent, commonly called the LOI, is one of the most consequential documents you will negotiate. By the time an LOI hits your desk, a buyer has committed serious resources to pursuing your business: reading the marketing materials, conducting initial financial review, modeling the transaction, and clearing internal approvals to make a real offer. They are now ready to commit, conditioned on confirming what they have learned so far.
Your task is to translate that interest into terms that protect your downside and preserve your leverage through the remaining stages of the process. Many of the terms that appear in the final definitive purchase agreement are first established in the LOI. Changing them later is difficult, expensive, and often impossible.
For Wisconsin and Northern Illinois middle-market sellers, understanding what an LOI contains, what is negotiable, and what to watch for is one of the highest-leverage exercises in the entire transaction. This guide walks through the LOI's role in middle-market M&A, the relationship between Indications of Interest and Letters of Intent, the key terms to focus on, and the red flags to address before signing.
A Letter of Intent is a document signed by both buyer and seller that outlines the proposed terms of a potential business sale. It is not the final purchase agreement. It is the structured framework the parties will use to draft the definitive agreement and complete formal due diligence.
A middle-market LOI typically covers the proposed purchase price and structure, the form of consideration, the working capital target, any equity rollover provisions, the exclusivity period, the due diligence window, the escrow and indemnification terms, and the procedural commitments from both sides. Where a small business LOI might run two or three pages, a middle-market LOI often runs ten pages or more, reflecting the additional complexity that comes with institutional buyers, multi-component consideration, and sophisticated deal structures.
The LOI is meant to capture the essential business terms in enough specificity that both parties can move forward into the formal diligence phase with confidence about what they are working toward.
In middle-market M&A, the LOI is usually preceded by an Indication of Interest, or IOI. This two-step process is largely absent in small business sales but is standard practice when sophisticated buyers participate.
Indication of Interest (IOI)
An IOI is a less formal, less binding expression of buyer interest typically submitted after a buyer has reviewed the CIM the seller and the seller's advisor circulated but before the buyer has invested in deep diligence. The IOI usually includes a valuation range rather than a specific price, identifies the buyer's preferred deal structure, and outlines the diligence the buyer would expect to conduct. Multiple IOIs are common in competitive processes, and the seller and advisor use them to identify which buyers warrant moving to a more formal stage.
Letter of Intent (LOI)
After IOIs are received and evaluated, selected buyers advance to the LOI stage. The LOI tightens the price to a specific number (or a narrower range), specifies deal structure in detail, and adds the binding provisions that govern the exclusive negotiation period. The buyer is now committing to invest meaningfully in completing the transaction, and the seller is now committing to a focused negotiation with that buyer.
The distinction matters because the leverage dynamics differ at each stage. Pushing back on terms is easier with IOIs (where the buyer has invested less and competitive tension is preserved) than with LOIs (where exclusivity is being granted in exchange for committed engagement). Many of the most important negotiations happen between IOI and LOI, before the seller agrees to be exclusive.
The most misunderstood aspect of an LOI is its legal status. The simple answer: most provisions are non-binding, but a few critical ones are. Mixing this up can cost meaningfully.
Typically non-binding provisions include the proposed purchase price, the deal structure, the working capital target, the equity rollover percentage, and the various performance terms. These are subject to confirmation through due diligence and may be renegotiated before the definitive agreement is signed.
Typically binding provisions include the exclusivity (or "no-shop") clause, the confidentiality obligations, the expense allocation, the termination rights, and the governing law and jurisdiction. These provisions take effect the moment the LOI is signed and remain enforceable until the LOI is terminated.
The clarity of this distinction matters because sellers sometimes assume the whole document is non-binding and casually agree to terms that are, in fact, fully enforceable.
By the time most sellers reach the LOI stage, they have already invested months in preparation, marketing, IOI review, and buyer meetings. The momentum to keep moving forward is significant, and the temptation to accept a reasonable-sounding LOI and "fix it in the definitive" is strong.
This rarely works.
The terms negotiated in the LOI set the expectations for the rest of the process. Buyers will resist any attempt to change them later. They will argue, often correctly, that the seller had the chance to push back when the LOI was being negotiated and chose not to. By the time the parties are negotiating the definitive agreement, the seller has committed time and money, the buyer has access to confidential information, and seller leverage is largely gone.
Understanding how strategic and financial buyer perspectives differ is essential context here. Strategic buyers and financial buyers evaluate businesses through different lenses and structure their LOIs differently. The cleaner and more buyer-favorable the LOI, the harder it will be to renegotiate at any later stage.
The following terms appear in virtually every middle-market LOI. Each is negotiable, and each has implications that extend well beyond the words on the page.
Each of these terms is worth a separate conversation with your advisor. A few deserve particular attention.
Purchase Price
Purchase price is rarely a single number in middle-market M&A. It is a structure: how much in cash at closing, how much held in escrow, how much subject to an earnout, how much rolled into equity. A higher headline price with a heavy earnout is not necessarily better than a lower headline price paid mostly in cash. Understanding how earnouts work and the conditions that determine whether they actually pay out is essential when evaluating these structures.
Deal Structure
Deal structure has major tax implications. Asset sales are usually preferred by buyers (stepped-up tax basis, no inherited liabilities). Stock sales are usually preferred by sellers (cleaner exit, often more favorable tax treatment). The choice gets negotiated, and the LOI typically locks it in.
Working Capital Target
Working capital is a technical provision with significant impact on net proceeds. The working capital target mechanics (how the target is set, how it is measured at closing, what dispute resolution applies if there is a disagreement) all deserve scrutiny. Middle-market buyers, particularly PE firms, treat working capital adjustments as a real source of price negotiation that continues right up to closing.
Of all the binding provisions in an LOI, the exclusivity clause carries the most weight. By signing it, the seller agrees not to entertain or pursue other buyers for a defined period, typically 45 to 90 days in middle-market transactions.
This is a significant concession. During exclusivity:
The buyer wants exclusivity to protect their investment in due diligence. The seller's interest is in giving the shortest possible window with the clearest possible terms. Specific points to negotiate:
In competitive middle-market processes, exclusivity is typically shorter because the competitive tension from the IOI stage has produced a buyer who is moving with urgency. Sellers who agreed to long exclusivity periods often regret it.
In middle-market M&A, particularly with private equity acquirers, the LOI often contemplates that the seller will retain a portion of equity in the post-closing business rather than receiving 100% cash at closing. This is called an equity rollover or reinvestment, and the terms can be among the most consequential in the entire LOI.
How It Works
A portion of the purchase price (often 10 to 30 percent, depending on deal type and buyer preference) is structured as equity in the buyer's holding company or in the acquired business itself. The rolled equity is typically subject to vesting, governance restrictions, and liquidity provisions. A subsequent exit by the PE acquirer, typically three to seven years after closing, is the realization event for the rolled equity.
Why It Matters
Rolled equity creates alignment between the seller and the new owners. It can produce meaningful additional return if the business performs well under PE ownership. It also carries real risk: poor performance, governance disputes, or a delayed second exit can erode value or trap capital for longer than expected.
What to Focus On in the LOI
For many sellers, equity rollover ends up being the single most important provision in the LOI because of the long tail of value implications it creates.
Several patterns consistently signal an LOI that will create problems later:
A clean LOI does not have to be perfectly favorable to the seller, but it should be specific and balanced. Vague terms in the LOI typically translate to disputes in the definitive agreement.
Effective LOI negotiation is not about extracting every possible concession. It is about establishing terms that protect the downside, preserve optionality, and set up a clean process toward closing.
Signing the LOI is not the finish line. It is the gate to the most demanding phase of the transaction: due diligence and the negotiation of the definitive agreement.
Within days of signing, the buyer's deal team will begin issuing information requests. The volume can be overwhelming. Most middle-market transactions also include a Quality of Earnings analysis commissioned by the buyer, which examines reported earnings in significant detail. Sellers who prepared comprehensively before LOI signing move through this phase relatively smoothly. Sellers who are reconstructing records under pressure often see the timeline stretch and the buyer's confidence erode.
The post-LOI phase is also when most surprises emerge, which is why thoughtful pre-LOI preparation matters so much. Issues that come up during diligence become negotiation points for the definitive agreement, and unfavorable LOI terms compound rather than resolve.
An LOI in middle-market M&A is a complex document with significant downstream consequences. Even seasoned business owners benefit from experienced perspective on what to accept, what to push back on, and what to clarify before signing.
Our team helps Wisconsin and Northern Illinois middle-market sellers evaluate LOIs from sophisticated buyers, negotiate the terms that matter most, and prepare for the demanding phases that follow. Visit our seller services page to learn more, or schedule a confidential conversation about the LOI in front of you.
Consultation includes: Review of the specific LOI received, identification of provisions that warrant negotiation, recommended responses, and guidance on what to expect through formal diligence and definitive agreement negotiation.
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