A deal closes on a set of numbers: revenue, earnings, working capital, and the assets and debts on the books. When a buyer sues later, or a seller fights a post-closing adjustment, it is almost always because those numbers turned out to mean something different than they seemed. The receivables were never going to be collected. A big customer had already given notice. Expenses were pushed into next year to make this year look better. A forensic accountant is brought in because valuing a business under dispute is not the same as reading a healthy set of financials. You have to work out what the numbers were hiding. Get that wrong and a buyer overpays by millions, or a seller signs away money they were owed.
Getting the valuation right
Two honest experts can value the same company and reach different figures, because valuation depends on assumptions: growth, margins, discount rate, what counts as a one-time cost. In a dispute, those assumptions are the battleground. A forensic accountant builds a valuation that ties each assumption to evidence in the company's own records, so it holds up when the other side's expert pulls at it. The number matters, but the support behind the number is what wins.
Finding what was left out
The reason many deals end in court is that something was not disclosed. Undisclosed debt. A lawsuit that was about to land. Inventory carried on the books that no longer existed. Related-party sales dressed up as arm's-length revenue. A forensic accountant reads the financials against the source documents and looks for the space between them. Earnings that do not turn into cash, a margin that jumped right before the sale, a customer concentration buried in a footnote. These are the items that change what a company is worth.
Earnouts and working-capital fights
Plenty of post-closing disputes have nothing to do with fraud. They come down to definitions. Many deals hold back part of the price as an earnout tied to future performance, or adjust the price based on working capital at closing. Both depend on accounting judgments, and both give each side a reason to read the contract in its favor. The seller books revenue early to hit the earnout target. The buyer classifies items to lower the working-capital figure. A forensic accountant works out what the agreement actually required and what the books actually show, which is usually where the money is.
Testimony that holds
When these cases reach arbitration or trial, the financial opinion has to be delivered by someone who can defend it. A forensic accountant explains a valuation or a misstatement in plain terms an arbitrator can follow, and does not fall apart when opposing counsel starts probing the assumptions. An opinion that cannot survive that questioning is worth little, however good the underlying analysis.
The through-line in M&A disputes is that the deal price was built on financial statements one side did not fully trust. Sorting out whether that distrust is justified, and putting a defensible number on it, is the work.
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What it means for your matter
Most engagements are not Enron. But the pattern is the same at every scale: a diverted vendor payment, a related party that shouldn't exist, revenue booked before it was earned, a reserve fund that never quite reconciles. The methods used to expose a multibillion-dollar fraud are the same methods that expose a bookkeeper skimming from a small business or a managing agent taking kickbacks from a co-op.
If something in your financial picture doesn't add up, the earlier a forensic accountant looks, the more of the trail survives. Documents get lost, memories fade, and money moves. The record is easiest to reconstruct while it is still fresh.
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