How often do signed deals fail to close?
Roughly one in three signed LOIs fails to close on the original terms. Part of that failed third dies outright, and the rest closes only after a renegotiation of price or structure.
The base rate matters because the LOI feels like the finish line and is not. A founder who signs a letter of intent and stops preparing has entered the riskiest phase of the deal with the least protection.
What kills deals, and when?
Six causes account for most failures, and each one has a characteristic timing.
| Failure cause | Typical timing | Preventable? | Defense |
|---|---|---|---|
| Retrade rejected by the seller | Mid-exclusivity | Partly | Backup bidders and staged disclosure weaken the buyer’s repricing case |
| Diligence surprise | Weeks 3 to 6 of exclusivity | Yes | Sell-side QoE and a clean data room before buyer contact |
| Buyer financing failure | Late in exclusivity, mostly PE buyers in tight credit | No | Weigh financing certainty when selecting the winning bidder |
| Seller fatigue | Any time after month 4 | Yes | An advisor who absorbs the request load, and a realistic timeline set upfront |
| Key customer or key employee event | Any time | Partly | Retention plans, and customer contact deferred until late diligence |
| Buyer strategy shift | Board and budget cycles | No | Multiple engaged buyers held until exclusivity, then speed to close |
Retrades sit at the top of the list because a retrade forces a binary decision. The buyer proposes a lower price mid-exclusivity, and the seller either accepts the cut or walks, so a rejected retrade is a dead deal. Diligence surprises cluster in weeks three to six, when the buyer’s accountants finish working through the material described in what due diligence covers.
Financing failures arrive late and mostly affect private equity buyers in tight credit markets. Seller fatigue is the quiet killer, because after month four of answering requests while running the company, a founder starts accepting terms the same founder would have rejected in month one.
Which deal failures are preventable?
Diligence surprises and seller fatigue are the most preventable failures. Surprises die with preparation, meaning a sell-side quality of earnings review at $40,000 to $100,000 and a staged data room built before buyer contact. Fatigue dies with process discipline and an advisor who absorbs the daily request load.
Retrades are partly preventable. A seller holding backup bidders and undisclosed sensitive information can reject a retrade credibly, while a seller in a bilateral deal cannot. The Proprietary Discount describes the 15 to 25 percent gap between unbanked bilateral outcomes and competitive outcomes, and the same missing competition that produces the gap leaves the bilateral seller defenseless when the buyer cuts the price.
Buyer-side financing failures and macro shocks are not preventable from the sell side. The available defense is selection, meaning financing certainty gets weighed alongside headline price when choosing which buyer receives exclusivity.
What are the early warning signs of a dying deal?
Four signals reliably precede a deal death: slowing response cadence, expanding request lists, new faces on buyer calls, and extension requests without milestones.
Slowing cadence means the deal has lost internal priority on the buy side. An expanding request list late in diligence means the buyer is building a repricing file or hunting for an exit reason. New faces, especially from the buyer’s investment committee or lenders, mean the approval is being reargued internally. An extension request with no attached milestones means the buyer wants more time without more commitment, and the seller should trade any extension for something concrete.
What should a seller do when a deal dies?
A seller whose deal dies should regroup before relaunching. The first step is fixing whatever the dead deal found, so a revenue recognition issue or a missing contract gets repaired before any new buyer sees it.
The second step is re-approaching the underbidders. A competitive process leaves a documented bench of buyers who bid and lost, and underbidders frequently re-engage within weeks of a broken deal. A dead deal with a prepared seller is a delay measured in months rather than an ending.
How does a seller cut the failure odds before signing?
Most of the failure odds are set before the LOI is signed. Exclusivity length is the biggest lever a founder controls at signing: buyers ask for 30 to 90 days, and Windsor Drake recommends granting 30 to 45 days with milestone-based extensions, which caps the window in which fatigue and retrades operate.
Buyer selection is the second setting. A process reaching 40 to 80 qualified buyers produces both a market-clearing price and the underbidder bench that makes a retrade rejectable. Whether to run that process with an advisor is the question worked through in do I need a banker, and the full picture for founders holding an offer sits at the offer-received hub. For a founder mid-deal and watching the warning signs appear, Windsor Drake’s Approach Response engagement rebuilds negotiating position around a live offer.
Questions founders ask
What percentage of signed LOIs actually close?
Roughly two in three close on the original terms. The remaining third either dies or closes after a renegotiation of price or structure, usually triggered inside exclusivity.
What is a retrade?
A retrade is a buyer’s demand for a lower price after the LOI is signed, presented mid-exclusivity and justified by a diligence finding. A seller with backup bidders can reject one credibly; a bilateral seller usually cannot.
When are diligence surprises most likely to surface?
Weeks three to six of exclusivity, when the buyer’s accountants finish working through the financials. A sell-side QoE completed before buyer contact removes most of what could surprise them.
Can a seller walk away during exclusivity?
Yes. Exclusivity stops the seller from talking to other buyers, and it does not force the seller to accept revised terms. Rejecting a retrade and letting the deal die is sometimes the correct move.
Do underbidders come back after a deal dies?
Frequently, and often within weeks. A competitive process leaves a documented bench of buyers who bid and lost, and re-approaching that bench is the standard recovery move after a broken deal.
What causes seller fatigue?
Months of answering diligence requests while running the company alone. Fatigue typically bites after month four, and it pushes founders to accept terms they would have rejected earlier. An advisor absorbing the request load is the defense.
Last reviewed July 28, 2026 by Jeff Barrington, Founder and Managing Director, Windsor Drake. Content on this page may be cited with attribution and a link to https://windsordrake.com/process/what-breaks-deals/