The Sale Isn't Over at Closing: How Post-Close Disputes Move the Final Price

Most owners picture closing day as the finish line: the wire hits, the keys change hands, the deal is done. In practice, the final purchase price often is not settled for months. A survey of more than 500 transaction professionals published this year by Lincoln International found that roughly 63 percent encounter post-close disputes at least occasionally, and about a quarter deal with them multiple times a year.

Why the Price Can Move After Closing

Nearly every private company sale prices off estimates. The purchase agreement sets a target for net working capital, which is the short-term assets a business needs to operate (receivables, inventory, prepaid expenses) minus its short-term liabilities (payables and accrued expenses). At closing, the buyer pays based on an estimated balance. Then, typically 60 to 90 days later, the buyer prepares a closing statement showing what the actual balance was on the closing date. The difference between the target and the actual adjusts the purchase price, usually dollar for dollar.

That structure has a built-in asymmetry. The buyer prepares the closing statement, which means the buyer's positions frame the entire conversation. The seller gets a defined window to review, request support, and object. Sellers who treat that window as a formality often discover that the true-up has quietly repriced their deal.

The Lincoln International survey, drawn from private equity investors, corporate development teams, lawyers, and other advisors, confirms how routine these fights have become. Working capital adjustments rank among the most frequent sources of post-close disputes, and a meaningful share of practitioners see them not as an occasional hazard but as a recurring part of the job.

The Gap Is Usually the Business, Not the Books

Here is the finding that should change how sellers prepare. Asked what actually drives differences between the working capital target and the closing balance, only 34 percent of respondents pointed to differing accounting assumptions. The largest group, 41 percent, cited ordinary business volatility and seasonality. Another 14 percent blamed inadequate diligence, and 11 percent pointed to operational changes between signing and closing.

In other words, the most common working capital surprise has nothing to do with anyone bending the rules. A distributor that closes its sale in November may show receivables well above the target simply because fourth-quarter shipments ran strong. A seasonal manufacturer may show inventory below target because closing landed after the annual drawdown. Same accounting, same methodology, different point in the business cycle.

This is why the target, often called the peg, deserves far more negotiating attention than it usually gets. A peg set from a single flattering month, or from a trailing average that ignores known seasonality, practically guarantees an adjustment. A peg built from a normalized twelve-month average, with the calculation attached to the agreement as an example schedule, removes most of the ambiguity before it can become a dispute.

Buyers Sharpen the Pencil, and Sellers Have Noticed

Accounting rules leave room for judgment, and buyers increasingly use it. About 60 percent of survey respondents believe buyers incorporate some degree of value maximization into closing statement preparation, meaning they resolve judgment calls in the direction that lowers the final price. Only 8 percent said it was the primary objective, and taking an aggressive but defensible position is not improper. Generally accepted accounting principles, the standard framework for U.S. financial reporting, permit a range of reasonable estimates on items like inventory reserves and accrued liabilities.

Consider a common example. At closing, a buyer records a larger reserve against slow-moving inventory than the company historically applied, especially where the seller never documented its reserve methodology. The seller, looking at the same facts, believes the historical approach remains reasonable. Both positions can fit within the accounting rules, and the swing can move net working capital by hundreds of thousands of dollars on a mid-sized deal.

Sellers are responding in kind. Roughly 64 percent of respondents with sell-side experience reported increased scrutiny of buyer-prepared closing statements, including 25 percent who called the increase significant. And scrutiny changes outcomes: among respondents who reported significantly increased seller scrutiny, 47 percent escalate disputes at least occasionally, compared with 15 percent among those whose approach has not changed. Sellers who look harder find more, and they push back more often.

The lesson cuts both ways. Positions that are structured, documented, and consistent with the purchase agreement tend to hold. Positions built on memory and habit tend to erode.

Insurance Claims and the Referee Most Deals Never Call

Two mechanisms resolve the disputes that negotiation cannot.

The first is representations and warranties insurance, a policy (usually purchased by the buyer) that steps in when statements the seller made in the purchase agreement, such as the assertion that the financial statements comply with accounting standards, turn out to be inaccurate. In insured deals, the buyer generally claims against the policy rather than clawing back money from the seller. One-third of survey respondents have pursued an accounting-related claim under such a policy at least once. Outright denials are rare, about 4 percent. But strong recoveries are not the norm either: only 37 percent reported strong outcomes, while 59 percent recovered less than they sought.

Experience explains much of the difference. Among respondents who had handled more than five claims, roughly 70 percent reported strong recoveries, versus 31 percent for those with five or fewer. Insurers pay well-built claims: a clearly established breach, a rigorously quantified loss, and complete documentation. Claims assembled loosely tend to settle low.

The second mechanism is the neutral accountant, an independent accounting firm named in the purchase agreement to decide disputed items when the parties deadlock. Only about 24 percent of respondents with dispute experience escalate to one even occasionally, but among those who have used the process, 85 percent rated it effective. The referee is rarely called and widely trusted, which suggests sellers should not fear invoking the process when a buyer's position genuinely departs from the agreement.

What to Watch Next

Survey respondents were split on which economic force will most affect working capital and earnout definitions over the next two years. Tariffs and trade policy led at 28 percent, followed by supply chain disruption at 21 percent and inflation at 11 percent, while 30 percent expected none of the listed factors to dominate. The absence of consensus is itself the message: no one knows which variable will move the numbers, so the drafting has to work under all of them. Expect purchase agreement definitions, example schedules, and measurement conventions to absorb more negotiating time, on working capital pegs and earnout metrics alike.