The most common financial surprise in M&A is not a hidden liability. It is not an undisclosed contingency. It is not a revenue overstatement that should have been caught in diligence. It is working capital.
A buyer acquires a company expecting to inherit a business with Rs 50 crore of normalised working capital. Post-close, the actual working capital requirement turns out to be Rs 75 crore. The buyer has effectively overpaid by Rs 25 crore, not because the purchase price was wrong, but because the cash they expected to be available for operations, investment or debt service is trapped in receivables, inventory and depleted supplier credit that reverted to normal levels within weeks of closing.
This is not fraud. It is not even misrepresentation in most cases. It is a failure of diligence, specifically a failure to distinguish between the working capital the company presents at the closing date and the working capital the business actually requires to operate normally across a full operating cycle.
The working-capital trap is one of the most predictable and most frequently repeated value-transfer mechanisms in M&A. The seller benefits. The buyer pays. And the mechanism operates in plain sight, within the terms of the SPA, using tools that are entirely legal and, in many cases, expected.
How the Trap Is Set
Closing-date management
Sellers have a direct financial incentive to minimise working capital at the closing date, because most share purchase agreements include a working-capital adjustment mechanism that settles the difference between actual working capital at close and an agreed target. A seller who reduces working capital below the target receives a smaller downward adjustment (or an upward payment). A seller who allows working capital to sit above the target pays the buyer the excess.
The tools are mechanical and well-understood. Collect receivables aggressively in the four weeks before closing: offer discounts, apply pressure, pull forward collections. Delay purchases: defer procurement, run down inventory, push orders into the post-close period. Extend payable days: negotiate extended payment terms with suppliers or simply delay payments that would normally be made before the closing date.
Each of these actions temporarily compresses working capital. The buyer sees a lean working-capital position at close. Within 30 to 60 days, receivables rebuild, inventory restocks, payables normalise, and the working capital reverts to its natural level. The buyer funds the difference.
Overdue receivables included in “current”
A receivable ageing schedule that shows Rs 30 crore in current receivables may include Rs 8 crore that is overdue by 90 or 120 days but has not been provided for. The buyer inherits a receivable that the balance sheet calls an asset but that operational reality has already converted into a collection problem. If the overdue receivables are ultimately uncollectable, the buyer has paid for revenue that will never convert to cash.
The diligence failure is not in missing the receivable. It is in failing to distinguish between a receivable that is genuinely current (invoiced within terms, customer paying normally) and a receivable that is technically current (not yet provided for) but operationally impaired (overdue, disputed, or owed by a customer in financial difficulty).
Inventory at cost, not at realisable value
Inventory carried at Rs 40 crore on the balance sheet may include Rs 12 crore of slow-moving, obsolete or damaged stock that will never be sold at cost. The buyer acquires inventory that the balance sheet values at historical cost but that the warehouse, if asked honestly, would value at a fraction.
The standard accounting treatment (lower of cost and net realisable value) provides some protection, but it depends on management’s assessment of realisable value. A seller approaching a transaction has limited incentive to write down inventory aggressively, because every rupee of write-down reduces net assets and potentially the purchase price.
Customer advances consumed, not delivered
A company that has received Rs 15 crore in customer advances has a working-capital benefit: it holds cash for goods or services it has not yet delivered. If the buyer does not adjust for unearned advances, they inherit a delivery obligation without the cash that funded it. The advance has already been consumed in operations. The delivery obligation remains.
Seasonality and timing ignored
A company whose working capital swings between Rs 40 crore and Rs 80 crore across the year depending on seasonality, procurement cycles and revenue patterns cannot be accurately assessed at a single closing date. A closing timed at the seasonal low presents a working-capital figure that is mathematically correct on that date but unrepresentative of the capital the business actually needs to operate across a full cycle.
One-off working-capital improvements
A company that factored Rs 20 crore of receivables in the month before closing, or secured an unusually large advance from a customer, or negotiated a one-time extension of payable terms with its largest supplier, has temporarily improved its working-capital position through mechanisms that will not repeat post-close.
The Diligence Methodology
In Northrop Management Private Limited’s transaction advisory and due diligence practice, working-capital analysis follows a structured five-step approach.
Step 1: Calculate trailing 12-month average working capital. A single closing-date figure is unreliable. The 12-month average captures the full operating cycle, including seasonal peaks and troughs, and provides a baseline that cannot be managed by closing-date tactics alone.
Step 2: Normalise for non-recurring items. Remove the impact of one-off events: factoring, unusual customer advances, supplier concessions, litigation settlements, insurance receipts and any other item that distorted working capital in a specific period.
Step 3: Stress-test receivables and inventory. For receivables: age the book and assess collectability by counterparty, separating genuinely current receivables from technically current but operationally impaired ones. For inventory: assess saleability by SKU, separating active products from slow-moving, obsolete and damaged stock.
Step 4: Compare normalised working capital to the closing-date figure. The gap between the normalised figure and the closing figure is the potential trap. If the closing figure is materially below the normalised figure, the buyer should assume that working capital will revert post-close and fund accordingly.
Step 5: Negotiate the working-capital target in the SPA using the normalised figure, not the closing figure. The working-capital adjustment mechanism is only as protective as the target it references. A target based on the last three months’ average (which may include closing-date management) provides less protection than a target based on the trailing 12-month normalised average.
The Economic Question
The question that determines who bears the cost of the working-capital trap is straightforward but rarely asked early enough in the transaction process:
What is “normal” working capital for this business, and who gets economically disadvantaged when the definition is wrong?
If the SPA defines normal working capital as the closing-date balance, the buyer absorbs the cost of reversion. If it defines normal working capital as the trailing 12-month normalised average, the seller absorbs the cost of closing-date compression. The definition is a negotiation point, and the party with the better diligence wins the negotiation.
Ashish Chaudhary frames the diligence principle directly: “The purchase price is what you negotiate. The working-capital position is what you inherit. If your diligence does not distinguish between the two, you will pay the right price for the wrong cash position.”
What This Means for Buyers, Sellers and Lenders
For buyers: Working-capital diligence is not a finance exercise. It is a commercial exercise. The diligence team should include operational personnel who understand the company’s procurement cycles, customer payment behaviour and inventory management practices, because these are the dimensions where closing-date management occurs.
For sellers: Legitimate working-capital optimisation before a transaction is expected and commercially rational. But a seller who compresses working capital through mechanisms that will obviously reverse post-close is creating a transaction risk that a competent buyer will identify and adjust for. Aggressive closing-date management may reduce the working-capital adjustment but will also reduce the buyer’s trust, which often costs more in other areas of the negotiation.
For lenders: A loan underwritten on the basis of the target company’s closing-date working capital may overestimate the cash available for debt service. Lenders should independently assess normalised working capital and base their covenants and drawdown conditions on the normalised figure, not the transaction figure.
Questions for the Boardroom
- in our most recent acquisition, did our diligence team calculate normalised working capital using a trailing 12-month average, or did they rely on the closing-date position?
- What was the actual working-capital position 90 days after close, and how did it compare to the closing figure?
- Did we assess the collectability of inherited receivables by counterparty and by ageing, or did we accept the face value of the receivable ledger?
- How much of the inherited inventory was sold within 12 months of close at or above carrying value?
- If we had used the trailing 12-month normalised working capital as the SPA target instead of the closing-date figure, how much would the purchase price have changed?
Closing Implication
The working-capital trap is not a complex mechanism. It is a predictable, well-understood value transfer that occurs in the majority of mid-market transactions because the buyer’s diligence focuses on the income statement and treats working capital as a mechanical adjustment.
Working capital is not mechanical. It is operational. It reflects the company’s actual cash requirements for inventory, receivables and supplier credit across a full operating cycle. A buyer who understands this will negotiate a working-capital target that reflects the normalised requirement. A buyer who does not will discover, in the weeks after closing, that the cash they thought they were acquiring was never really there.
The difference between the two is not analytical sophistication. It is diligence discipline. And in M&A, that discipline has a precise financial value: the gap between the normalised working capital and the closing-date figure, multiplied by the cost of funding the reversion, compounded by the opportunity cost of capital that could have been deployed elsewhere.
That is the working-capital trap. And the only defence against it is a diligence process that refuses to accept the closing-date snapshot as the whole picture.
