Most business deals that collapse in diligence die for the same handful of reasons — owner dependency, customer concentration, or earnings that don't survive a Quality of Earnings review — and they die after the LOI, once everyone has already invested months. This teardown walks through how a clean-looking deal falls apart, stage by stage, so advisors can recognize the pattern early. It's the kind of post-mortem that turns a painful loss into a screening checklist.
The setup
A profitable services business, roughly $4M in revenue, healthy margins, a respected owner with deep customer relationships. On paper it looked eminently sellable: real profit, a recognizable name in its region, a motivated owner ready to transition. A buyer engaged quickly and signed an LOI at an attractive multiple. Everyone was optimistic.
The problem: the same things that made the business look strong from the outside were the things that hadn't been examined from the buyer's side.
What diligence found, stage by stage
Weeks 2–6 — Financial diligence and QoE
The buyer's accountants rebuilt the earnings. Several add-backs the owner had counted on couldn't be documented, and a "one-time" cost turned out to recur. Normalized EBITDA came in meaningfully below the figure the LOI was priced on. The headline number quietly dropped. (What a QoE tests →)
Weeks 4–9 — Commercial diligence
The bigger problem surfaced. The top client was a large share of revenue, and — more damaging — most major accounts were loyal to the owner personally, not the company. The buyer modeled meaningful churn on the owner's departure. What the owner described as "great relationships" the buyer read as concentrated, owner-held risk. (Why concentration kills the multiple →)
Week 9 — The unraveling
Between a re-cut to earnings and a discount for owner dependency and concentration, the buyer's revised number was far below the LOI. They proposed making up the gap with a large earnout tied to post-close performance — performance that depended on the very owner who was leaving. The owner, insulted by the drop and unwilling to bet on an earnout, walked. Months of work, gone. (Where deals die in the timeline →)
Why it really died
The deal didn't die over price. It died over trust and surprise. Every issue diligence uncovered was present before the LOI — but unexamined. The buyer's confidence eroded with each discovery, and once trust is leaking, even fixable issues compound into a dead deal. The owner experienced it as a buyer "moving the goalposts," when in fact the goalposts were always there; no one had measured against them first.
What would have saved it
| Found in diligence | If addressed pre-market |
|---|---|
| Undocumented add-backs; recurring "one-time" cost | A sell-side QoE sets a defensible number; no re-cut surprise |
| Owner-held client relationships | 12–18 months of relationship transfer; churn risk falls |
| Customer concentration | Deliberate diversification lowers the discount |
| Earnout proposed to bridge the gap | Owner independence removes the buyer's reason to require one |
None of these fixes is exotic. All of them take lead time — which is exactly why they have to happen before the LOI, not during diligence. A readiness engagement starting a year earlier would have surfaced every one of these while they were still fixable, and the same business would likely have closed near its original number. (How owner dependency drives all of this →)
The lesson for advisors
A business that looks sellable from the outside can still be unsellable from the buyer's side — and you can't tell which by looking at the P&L. The pattern in this teardown repeats constantly: profitable, owner-dependent, concentrated, with books that haven't been stress-tested. Screening for it before the LOI is how you avoid investing months into a deal that was structurally doomed. (The pre-LOI readiness conversation →)
Screen for the pattern in five minutes. The Exit Readiness Score scores a client across all eight diligence dimensions — the fastest way to catch a doomed deal before you take it on. See the readiness lens →
Frequently asked questions
What kills a business sale in diligence?
Most deals die from owner dependency, customer concentration, or earnings that don't survive a Quality of Earnings review. These issues are usually present before the LOI but unexamined, and they erode the buyer's trust as diligence uncovers them.
Can a deal fall apart after the LOI is signed?
Yes — and most do. The LOI price is provisional. Diligence verifies it, and findings like re-cut earnings, concentration, or owner dependency get converted into a lower price, an earnout, or a walk-away in the weeks after signing.
Why do owners feel buyers "move the goalposts" in diligence?
Because the issues diligence uncovers were present all along but never measured. The owner experiences each discovery as a new demand, when the buyer is simply confirming what was always there. Pre-market readiness prevents the surprise.
How can advisors avoid taking on doomed deals?
Screen for the recurring pattern — profitable but owner-dependent, concentrated, with un-stress-tested books — before the LOI, using a structured readiness conversation or an objective readiness score, and refer clients with fixable gaps to readiness work first.