Letter of Intent (LOI) Guide for Founders: Avoid M&A Traps

The Moment Your Leverage Flips

The Letter of Intent (LOI) arrives. Your heart pounds. A life-changing number for your company sits in your inbox. But that number, and the term “non-binding,” are a dangerous illusion.

An LOI isn't the finish line. It’s the starting gun for a 60-day sprint where you are the target. Before you sign, you have all the power. You can talk to other buyers, create a competitive process, and walk away at any time. The moment you sign the LOI’s binding “no-shop” clause, that leverage vanishes. The power flips entirely to the buyer.

Thinking an LOI is informal is a fatal mistake. It’s a blueprint for the final deal. While you might change the paint color, the foundation is set in stone. This document is where the deal is truly won or lost.

Deconstructing the "Price": The Non-Binding Terms

The economic terms are presented as "non-binding," subject to diligence. This is true—but only if the buyer finds a major problem. You cannot re-negotiate these terms upwards. Here's how to look past the headline number.

Purchase Price & Consideration

The "price" is not a single number. It’s a combination of cash, stock, and other contingent payments. You need to value each component.

Cash: Clean, simple, and preferred. · Stock: Is the acquirer a public company, or another startup? If it's public, is the stock liquid? Or does it have a lock-up period? If it’s private, you’re now valuing their business on limited information. You must ask for their cap table and financials. · Earn-Out: This is where part of the purchase price is tied to future performance goals (e.g., "You get an extra $5M if the product hits $2M in ARR in the 18 months post-acquisition"). Treat earn-outs with extreme skepticism. Once you sell, you lose control over resources, budget, and strategy. The buyer is incentivized to ensure you don't hit the targets. Earn-outs are often a way to offer a higher price on paper that never materializes in reality.

The Working Capital Adjustment Trap

This is the most common and painful post-LOI surprise. An LOI will state you must leave a "normal" amount of working capital in the business at closing. Working capital is typically defined as Current Assets (like accounts receivable) minus Current Liabilities (like accounts payable).

If you don’t precisely define this "normal" amount in the LOI, the buyer defines it for you—always in their favor.

Your LOI is for a $20M purchase price. It states the price is subject to a "normalized working capital target." The buyer waits until the week before closing, after you’ve spent six figures on legal fees, to set the target at $500,000. Your actual working capital at closing is $150,000. On the day of the wire, the buyer legally claws back the $350,000 difference. Your price is now $19,650,000.

How to avoid this: Insist on defining the working capital target in the LOI. It can be a specific number (e.g., "$200,000") or a clear formula based on a trailing average (e.g., "the trailing six-month average working capital").

Founder Vesting: The Price Held Hostage

The LOI will dictate how much of your personal proceeds are tied to continued employment. This is not a "job offer"—it is part of your purchase price being converted into a retention package.

A typical structure might look like this: a portion of your stock or cash is placed into escrow and vests over 2-4 years. If you leave or are fired before it fully vests, you lose that money. Model this as a direct reduction in your guaranteed take-home amount.

You’re selling for $30M. Your 50% stake is worth $15M. The LOI stipulates that $5M of your personal proceeds will be subject to a four-year vesting schedule with a one-year cliff. This means you get $10M at closing, but you must work at the acquirer for four years to see the other $5M. You aren't getting a $15M price; you're getting a $10M price and a $5M RSU package. Negotiate it accordingly.

The Binding Clauses: Where The Real Legal Risk Lies

Pay your lawyer to scrutinize this section. These clauses are not suggestions; they are legally enforceable and can be used against you.

The Exclusivity ("No-Shop") Clause

This is the most important clause for a seller. It legally forbids you from soliciting, initiating, or engaging in discussions with any other potential buyer for a set period. It kills your leverage.

Your Goal: The shortest possible period. 30-45 days is standard. This is enough time for a serious buyer to do diligence. · Red Flag: 60+ days is a sign the buyer is not confident, is not committed, or wants to use the time to find problems and re-trade the deal. 90 days is unacceptable. A long no-shop gives a buyer the freedom to put you on the back burner while they consider other priorities.

"Thanks for the draft LOI. We’re excited about the potential to partner up. Regarding the exclusivity period, a 90-day no-shop is a non-starter for us. We’re willing to commit to a 30-day period of focused, mutual diligence to get to a definitive agreement. If we both agree this is a priority, that should be more than enough time."

Break-up Fee

Aggressive buyers will include a fee (1-3% of the deal value) that you must pay them if you breach the no-shop or walk away. For an early-stage company, you should reject this. The exclusivity you grant them is their consideration. A buyer wanting a break-up fee on top of a no-shop is creating a one-sided risk profile. If they insist, it must be mutual (they pay you if they walk away without cause), but your starting position should be to remove it entirely.

Confidentiality (NDA)

You probably signed an NDA before the LOI. The LOI will reaffirm it. Ensure it’s mutual. During diligence, you will be sharing your deepest secrets. Make sure the acquirer is equally bound to keep anything they share with you confidential.

The Four Fatal Founder Mistakes

Hiring a Generalist Lawyer. Your corporate counsel who handled your seed financing is not an M&A lawyer. You need a specialist who closes dozens of these deals a year. The $10k you spend on an expert to review the LOI is the best insurance you’ll ever buy. · Surrendering on Exclusivity. Eager founders agree to 90 or 120-day no-shops, seeing it as a sign of commitment. It’s a sign of surrendering leverage. Every day over 45 gives the buyer more power to find issues and lower the price. · Not Defining the "Price" In Detail. You don't have a real price until you know the cash/stock mix, working capital target, escrow amount, and founder vesting schedule. A vague LOI is an invitation for the buyer to re-trade the deal when you’re exhausted and have no alternatives. · Getting Emotionally Committed. Seeing the big number, you start picking out new houses. You tell your team you’re "in the final stretch." This emotional investment clouds your judgment and makes it impossible to walk away from a deal that turns sour. Stay skeptical.

LOIs in Fundraising: The Term Sheet

In a priced equity round, the "Term Sheet" is the LOI. The same dynamics apply. While VCs don’t demand legal break-up fees, a "no-shop" is implicitly binding on your reputation. Shopping a signed term sheet to other investors is a cardinal sin that will get you blacklisted.

When you sign, you are morally committed to closing with that investor. The key terms set here—valuation, option pool shuffle, board composition, pro-rata rights—will compound for years. They are the foundation of your company's governance and future. Treat them with the same gravity as an M&A LOI.

How to Apply This This Week

Identify Your M&A Counsel Now. Get recommendations from other founders or your VC board members. Have an introductory call so you know who to call when an offer appears. · Build a "Fire Drill" Data Room. Organize your financials, contracts, cap table, and IP documentation. Use a tool like DocSend or a dedicated VDR provider. Knowing your house is in order gives you confidence. · Define Your Walk-Away Terms. Before you talk to any buyer, write down your red lines. What is the minimum all-cash price you’d accept? What is the maximum portion of your proceeds you'd agree to vest? What is the longest no-shop you’d grant? · Model Your Net Proceeds. Create a spreadsheet. Model the purchase price minus lawyer fees, banker fees (if any), escrow, working capital adjustments, and the portion of your take-home that will be subject to vesting. The final number is what matters.