The Post-Closing True-Up: Where Sellers Lose Money After the Deal Is Done
The business distributed industrial fasteners, the deal closed at 19 million dollars in March, and the founder took his family to Portugal for three weeks. Seventy-one days later the buyer delivered a final closing statement showing net working capital 840 thousand dollars below the agreed target. By then the controller had been let go in the buyer's integration, the CFO had signed a retention agreement and now worked for the acquirer, the founder's advisory firm had been paid and had moved on, and the seller had thirty days to file a line-item objection to a calculation built from books he no longer had access to. He hired a forensic accountant in week three, spent 47 thousand dollars, recovered a portion of it, and settled at 610 thousand. Every dollar of that was decided in one paragraph of a purchase agreement drafted five months earlier that nobody in the room had read closely, because it sat under a heading that looked administrative.
The purchase price adjustment is the last live economic term in a deal and it is the one advisors watch least. This is partly structural. Sell-side engagements typically end at closing, the success fee is earned and paid at closing, and the true-up plays out sixty to ninety days later on the buyer's schedule, in the buyer's systems, with the buyer's accountants. Nobody on the seller's side owns it. Founders are told, correctly, that the mechanism is standard, and they hear "standard" as "safe," which it is not. Standard means it appears in nearly every middle market agreement. It does not mean the version in front of them is neutral.
Start with the sequence, because founders rarely have it clearly. A few days before closing the seller delivers an estimated closing statement with an estimated net working capital figure, and the cash at closing is set off that estimate. After closing the buyer prepares the final statement, commonly within sixty to ninety days. The seller then has a review period, commonly thirty to sixty days, to accept it or deliver an objection notice. If an objection is filed, the parties negotiate in good faith for a defined window, often thirty days. Whatever remains unresolved goes to a neutral accountant. Roughly five months can pass between the wire and the final number, and the seller's leverage decays across every one of those months.
The asymmetry is the thing to name out loud with a client before signing. After closing the buyer owns the ledger, the ERP system, the accounting staff, and the auditors. The seller is a former owner asking for permission to inspect records that used to be his. This is why the access provision matters as much as the arithmetic. A well-drafted agreement gives the seller and the seller's accountants access during the review period to the books and records, to the personnel, and specifically to the work papers prepared by the buyer or the buyer's accountants in producing the closing statement. Without the work papers, an objection notice that has to be specific as to line item and amount is close to impossible to write, and a seller who cannot write a compliant objection notice has effectively accepted the buyer's number by default. Advisors should treat a narrow or vague access clause as a substantive price term, not a lawyer's detail.
The second thing to fix is that the definition is worth more than the target. A great deal of negotiating energy goes into the peg itself, the dollar figure the closing balance sheet is measured against, and comparatively little goes into defining what is counted. That is backwards. Net working capital is a defined term, and every judgment about what belongs inside it moves money. Cash, debt, deferred revenue, accrued bonuses, customer deposits, income tax accruals, prepaid insurance, and intercompany balances are all items I have seen argued after closing on deals where the parties believed they had agreed. The remedy is unglamorous and effective: attach a sample calculation as an exhibit to the purchase agreement, built from a real month, showing every account included and every account excluded, with the target derived from it. If the exhibit exists, most of the argument cannot happen.
Third, resolve the accounting principles hierarchy before it becomes a weapon. Agreements routinely say the closing statement will be prepared in accordance with GAAP applied on a basis consistent with the company's historical practice. For a lower middle market company those two instructions frequently conflict, because the historical practice is exactly what a buyer's accountants will characterize as non-GAAP. Left unranked, that sentence is an invitation. The fix is to state the order of precedence explicitly: the agreed sample calculation and accounting principles schedule governs first, historical practice governs second, GAAP governs only where the first two are silent. Some well-drafted agreements go further and require the buyer to identify the specific GAAP requirement it claims overrides the schedule, which converts a general appeal to accounting standards into a testable assertion.
Fourth, watch the reserves, because that is where most manufactured adjustments live. Allowance for doubtful accounts, inventory obsolescence, warranty accrual, returns reserve, and accrued vacation are judgment items. A buyer applying a more conservative reserve policy to the closing balance sheet can produce a six-figure downward adjustment without a single fact changing about the business. The counter is to freeze the methodology, not the number: state in the schedule that reserves will be computed using the same methodology, aging buckets, and percentages used in preparing the target, and that changes in estimate arising after closing are excluded. A seller who negotiates the peg but leaves the reserve methodology open has negotiated the visible half of the term.
Fifth, understand what the neutral accountant is and is not, because founders imagine a judge and get something narrower. The neutral is typically appointed as an expert rather than as an arbitrator, decides only the specific items still in dispute, and commonly decides them on the written submissions of the parties without live testimony or discovery. Most agreements also bound the outcome, so the determination cannot be more favorable to either side than that side's own stated position. That bound is worth insisting on: it removes the incentive to take an extreme position, and it caps the downside of engaging the process. So does the fee allocation. An agreement that splits the neutral's fees evenly rewards aggression. An agreement that allocates them in proportion to how far each party's position sat from the final determination punishes it, and it is a clause buyers usually accept because it reads as fair to both sides.
Sixth, size and separate the adjustment escrow. A purchase price adjustment that runs against a general indemnity escrow is competing with representation claims for the same dollars, and it can also drag the release of that escrow. A dedicated adjustment escrow, sized to a realistic downside rather than to the buyer's maximum theoretical claim, with a defined release date shortly after the final determination, keeps the two exposures separate. Two symmetry points belong in the same conversation. The adjustment should run in both directions, so working capital above target is paid to the seller and not merely capped at zero. And the seller's exposure should be capped, ideally at the escrow, so a true-up cannot become an unlimited clawback against proceeds already distributed to family shareholders. This is a different exposure from the indemnity package, and it is not covered by a representations and warranties policy. I have written about how reps and warranties insurance changes the advisor's job, and one of the most common misreadings I encounter is a founder who believes a policy has taken care of the purchase price adjustment. It has not. Adjustment provisions are generally carved out of coverage.
Seventh, and this is the operational point most advisors miss, decide before closing who on the seller's side will read the final statement. The person best equipped to do it is almost always the CFO or controller, and that person is the one the buyer is most likely to hire, reassign, or terminate. The fix is cheap if it is planned and expensive if it is not: engage the finance lead, or an outside accountant who worked on the sell-side quality of earnings, under a short consulting arrangement covering the true-up window, and budget it as a transaction cost. Ninety days of a part-time controller's time costs a fraction of one contested reserve. This also belongs in the conversation about who gets paid besides the founder, because the finance staff are simultaneously the people the buyer wants to retain and the people the seller needs available.
Advisors should also be explicit in the engagement letter about whether their own work continues through the adjustment period. Most engagement letters are silent, which means the answer is no, and the founder discovers that in month three. There is no single right answer here. A firm can reasonably scope out of the true-up. What it cannot reasonably do is leave the client to infer coverage that does not exist. Saying plainly at the outset that the engagement runs through the final determination of the purchase price, or that it does not and here is what the seller should arrange instead, is a two-sentence addition that prevents a bad conversation later. It sits naturally alongside the other terms I think a seller should ask about before signing any engagement letter.
All of the leverage on this term exists before the letter of intent is countersigned. The peg methodology, the sample calculation exhibit, the accounting principles hierarchy, the escrow structure, and the fee allocation for the neutral are all worth more when there is a competing bidder than when there is an exclusivity clause. A buyer who will not commit to a peg methodology at the LOI stage is telling you something. Two offers at the same headline price are materially different if one specifies a twelve-month trailing average peg computed on a stated basis and the other says the target will be agreed prior to closing, and that difference belongs in the same column as escrow size and earnout definition when scoring competing letters of intent.
The preparation side of this is less about negotiation and more about arithmetic that has to exist before anyone can argue over it. A defensible peg requires clean monthly balance sheets over a full seasonal cycle, ideally twenty-four months, with consistent cutoff, consistent revenue recognition, and reserves computed the same way every month. A company whose December inventory count is the only real count of the year cannot support a monthly average target, and the buyer will set the peg on whichever months favor the buyer. This is the same discipline that carries the add-back conversation, and I have argued elsewhere for the add-back schedule buyers actually believe and for staging diligence readiness across twelve months. Worth noting for accuracy: the Cordis Institute Preparation Gap dataset (DOI 10.2139/ssrn.6515478) measures price movement between the letter of intent and closing across 89 transactions, with 68 percent seeing a post-LOI adjustment and a 9.8 percent median compression. That is a different window from the one described here. The true-up happens after the close and is not captured in that figure, which means the total distance between the headline offer and the money a founder ultimately keeps is wider than the compression number alone suggests.
The founder in Portugal did not lose 610 thousand dollars because he was careless or because his buyer was dishonest. He lost it because the term that decided it was negotiated at the end of a long document by people who were tired, and because by the time it mattered every person who understood the company's balance sheet was working for someone else. None of the fixes above are exotic. They are an exhibit, a hierarchy sentence, a reserve methodology lock, a fee allocation clause, a separate escrow, and one retained finance person for ninety days. Together they cost very little at the LOI stage and they are unavailable at any price once exclusivity is signed. Building them into the preparation phase rather than the closing scramble is a large part of what we do for founders at Cordis Group.