Why Business Sales Fall Through: The 7 Deal Killers Between LOI and Closing

You signed the letter of intent. The buyer seemed serious. Your attorney started drafting. And then — somewhere in the next 60 to 90 days — the whole thing fell apart.

If you're a business owner in Greater Boston thinking about your exit, understanding why business sales fall through is just as important as understanding how to get an offer in the first place. The 7 deal killers between LOI and closing are predictable, preventable, and responsible for roughly 50% of all middle-market deals never reaching the finish line. That's not a typo — about half of all signed LOIs die before closing.

Here's what actually goes wrong, and what you can do about it now — even if you're still a year or two away from selling.

Deal Killers #1–3: Financial Surprises That Destroy Buyer Confidence

The most common reason business sales fall through is that the numbers don't hold up under scrutiny. Due diligence is a stress test, and most owner-operated businesses weren't built to survive one without preparation.

1. Inconsistent or messy financials. Buyers and their accountants will compare your tax returns, P&Ls, balance sheets, and bank statements line by line. If your QuickBooks doesn't reconcile with your tax filings — and for many privately held businesses, it doesn't — the buyer's confidence drops fast. This is especially common among service businesses along the Route 128 corridor where owners have managed books informally for years.

2. Undisclosed add-backs that don't pass the smell test. Every owner knows about recasting — adding back personal expenses, one-time costs, and owner compensation to show true earnings. But there's a difference between a legitimate recast and a fantasy. If you're claiming $200K in add-backs but can't document each one clearly, the buyer's CPA will flag it and the deal reprices or dies.

3. Revenue concentration risk. If one customer represents 25% or more of your revenue, many buyers will either walk away or demand a significant price reduction. We see this regularly with B2B companies in Cambridge and Waltham that grew on the back of a single enterprise contract. It's a fixable problem — but not in 30 days.

The common thread here: these are all issues you can address 12 to 18 months before going to market. Forensic financial recasting — the kind we do at Nova Exit Partners — isn't about making your numbers look pretty. It's about making them bulletproof before a buyer ever sees them.

Deal Killers #4–5: Structural and Legal Landmines

4. Lease and contract assignment issues. Your commercial lease probably has a change-of-control clause. So might your key vendor contracts, franchise agreements, or licensing arrangements. If your landlord in Newton or Needham won't consent to assigning the lease — or wants to renegotiate at double the rate — the buyer's entire financial model breaks. This kills more deals than most owners realize.

5. Undisclosed liabilities or legal exposure. Pending litigation. Unresolved tax issues. Environmental liabilities. Employee misclassification. Buyers expect to find some risk during diligence — but they expect you to have disclosed it upfront. The discovery of a hidden problem isn't just a financial issue. It's a trust issue. And once trust breaks, deals rarely recover.

Smart sellers work with their attorney and advisor to compile a full disclosure package before the LOI is signed. You want the buyer's surprises to be pleasant ones, not deal killers.

Deal Killers #6–7: The Human Factor — Why Deals Die Emotionally

6. Seller's remorse and renegotiation fatigue. Selling a business you built over 20 years is an emotionally brutal process. Somewhere around week six of due diligence — after you've handed over every financial record, answered hundreds of questions, and felt your privacy completely invaded — many owners start to wonder if it's worth it. They get short with the buyer. They drag their feet on document requests. They start rethinking the price. The deal dies not because of a spreadsheet, but because the seller checked out emotionally.

7. Buyer financing falls through. Even well-qualified buyers sometimes can't close. SBA loans get denied. Private equity capital calls get delayed. A buyer's existing business hits a rough patch and their lender pulls back. In Massachusetts, where SBA 7(a) loans are the most common acquisition financing vehicle for deals under $5M, the underwriting process alone takes 45 to 75 days — and banks can say no at the last minute.

You can't eliminate this risk entirely, but you can mitigate it. Requiring proof of funds or a pre-qualification letter before accepting an LOI is standard practice. Running a competitive process with multiple interested buyers gives you a backup plan. And structuring the deal to be SBA-friendly from day one — clean financials, clear cash flow, reasonable asking multiple — dramatically improves your odds.

How to Protect Your Deal Before It Even Starts

If you read this list and recognized your own business in two or three of these deal killers, that's actually good news. It means you're reading this early enough to fix them.

Here's what the best exits have in common:

• Financials that have been forensically recast and documented 12+ months before going to market
• Key contracts and leases reviewed and, where possible, pre-negotiated for assignability
• Revenue diversification strategies implemented well before the first buyer conversation
• An experienced advisor who has been through the LOI-to-closing gauntlet — not just as a broker, but as a seller

Erik Kretschmar, founder of Nova Exit Partners, has personally sold four of his own businesses. He's sat on your side of the table. He knows what the 11th-hour phone call from a buyer's attorney feels like, and he knows how to make sure your deal doesn't become a cautionary tale.

If you own a business in Boston, the Route 128 corridor, or anywhere in Greater Massachusetts and you're even beginning to think about an exit — the best thing you can do right now is understand what your business is actually worth and where the vulnerabilities are.

Get your free business valuation — a confidential, no-pressure conversation about where you stand and what it would take to close a deal that actually closes.