Working capital adjustments: how price chips happen at completion.

Why buyers insist on it

Without an adjustment there is an obvious incentive for a seller to convert working capital into cash in the final weeks: collect debtors early, run stock down, delay supplier payments, and take the improved cash balance out under the cash-free basis. The buyer would then inherit a business that needs an immediate injection to return to its ordinary rhythm, and would in effect have paid twice.

It follows that an owner cannot simply extract every receivable or current asset before completion. Debtors, stock and prepayments are part of the operating machinery the buyer is purchasing, not a surplus to be swept. The negotiated target defines where the line falls, which is why the target itself, rather than the principle, is where the real discussion happens.

What is normalised working capital?

Normalised working capital is the level a business ordinarily needs to operate, derived from its own historic trading rather than from any universal formula. It is usually built from monthly balance sheets over a reference period, on accounting policies defined in advance and applied identically to both the target and the completion measurement.

Several features of a business shape what normal looks like. Seasonality is the most important: a company that builds stock through the autumn carries far more working capital in November than in February. Debtor days and creditor timing set the underlying rhythm. Stock policy, growth, unusual year-end positions and identifiable one-off items all distort individual months and should be normalised deliberately rather than argued about later. A growing business is a particular case, because its working capital requirement rises with revenue and a target drawn from a trailing average can understate what the business will actually need.

There is no single correct calculation, and any adviser presenting one as standard is oversimplifying. What matters is that the reference period, the policies and the treatment of unusual items are agreed in writing, with a worked example, before exclusivity.

Why disputes arise

Most working-capital arguments are definitional rather than arithmetical. The recurring flashpoints are what falls inside the definition at all, how individual balances are classified, whether a historic average fairly represents the business, and how to treat a reference period containing an atypical trading run.

Manipulation around completion deserves separate mention, because it is usually unintentional. An owner who chases collections harder than usual in the final month, or pauses a supplier payment run, may simply be managing cash out of habit. To a buyer's accountant reviewing the ledgers afterwards, the pattern is indistinguishable from an attempt to move value, and it damages trust at the point where trust is worth the most.

Can working capital reduce the amount a seller receives?

Yes. Where delivered working capital is below the agreed target, the buyer will normally seek a downward adjustment for the shortfall, and that is the price chip in the title of this guide. It is applied against the equity proceeds, not against the enterprise value, so it reduces the sum reaching shareholders directly.

The mechanism is not one-directional and should not be presented as buyer opportunism. Where delivered working capital exceeds the target, most agreements pay the excess to the seller on the same pound-for-pound basis. A completion that happens to fall at a seasonal peak can produce a payment to the seller as readily as a completion at a trough produces a deduction. What causes damage is not the mechanism but ignorance of it: a seller who has not modelled the position against the likely completion date is accepting an outcome decided by the buyer's funding timetable.

An illustrative example

The figures below are hypothetical and do not represent any transaction handled by EXITS.co.uk.

Had the delivered position been £1,350,000 instead, the same clause would ordinarily have produced a payment of £150,000 to the seller. The arithmetic is simple; the value lies in knowing, months earlier, which side of the target the business is likely to be on.

How to prepare

Working capital should be understood before heads of terms are signed, not when the completion accounts land. That means monthly management information that is clean, consistent and reconciled, so a target can be built from real data rather than from the buyer's reading of it. It means knowing your own historic pattern: how debtor days move through the year, how creditor timing behaves, how stock builds and unwinds.

It also means identifying unusual balances early, whether that is a long-standing debtor everyone has stopped chasing, stock that has not moved for two years, or a prepayment relating to a single event. Raising those items yourself is far cheaper than having them found. Take appropriate accounting advice on the definitions and on the provisioning policies, because these are technical points where a small drafting difference has a direct cash consequence.

Then negotiate the protections while you still have alternatives. Agree the target as a number, or as a formula with a worked example attached to the heads of terms. Ask for a de minimis threshold so trivial movements do not trigger an adjustment or an argument. Agree who prepares the completion accounts, the review period, the level of supporting detail the seller may see, and a dispute route naming an independent firm acting as expert. Heads of terms and deal structure sets out where these points belong.

How it fits with the rest of the price

Working capital is one of three mechanisms that separate a headline offer from the sum a shareholder receives, alongside net debt and any deferred or conditional consideration. Read this guide with cash-free, debt-free for the balance-sheet half of the bridge, and with how a business is valued before sale for how the headline figure was arrived at in the first place. For a view on your own company, request a business valuation.

Does a working capital adjustment apply to every business sale?

Not to every sale, but to most transactions of any scale. Smaller deals, particularly asset purchases and straightforward owner-managed sales, are sometimes agreed on a simple fixed price with no completion mechanism at all, and that can be the right answer where the balance sheet is small and stable. Once a business carries meaningful stock or debtor balances, or once an institutional or funded buyer is involved, an adjustment is close to standard because the buyer's own funders expect it.

Where a locked box structure is used instead, the working capital position is fixed at the locked box date rather than measured at completion, and the seller gives undertakings against extracting value in the intervening period. That removes the post-completion true-up and with it most of the argument, but it transfers risk in a different way: the seller carries the trading result up to the locked box date and the buyer carries it afterwards, so the recency and reliability of the reference accounts do all the work.

How long after completion is the adjustment settled?

Completion accounts are usually prepared within thirty to ninety days of completion, with a defined review period for the other party of two to four weeks. If the parties disagree and cannot resolve the point between them, the agreement should name an independent accountancy firm to determine the matter as an expert rather than as an arbitrator, with its decision final in the absence of manifest error. Costs are commonly shared or awarded by the expert.

The practical consequence for a seller is that a portion of the price remains provisional for a period after the business has been handed over, at a point when the seller no longer controls the ledgers being used to calculate it. Two protections matter more than any other: a contractual right to the underlying working papers and reasonable access to the finance team, and a requirement that the accounts are prepared on the specific policies annexed to the agreement, applied consistently with the way the target was built.

What should an owner do in the twelve months before a sale?

Treat working capital as something to be understood and evidenced rather than improved artificially. Produce reliable monthly management accounts, reconcile the balance sheet every month, and keep an aged debtor and aged stock analysis that a buyer could review without embarrassment. Deal with the items that will otherwise be found: write off or pursue long-standing debtors, clear or provide against dead stock, and resolve any balance nobody in the business can explain.

Then model the position. Plot the last three years of month-end working capital, identify the seasonal peak and trough, and establish where the likely completion date falls in that cycle. An owner who knows in advance that a September completion sits near the top of the stock cycle can either negotiate a target that reflects it or influence the timetable. An owner who has not looked will find out from the completion accounts, which is the most expensive moment to learn it.

Finally, trade normally through the sale process. The temptation to sharpen collections or stretch creditors in the closing weeks is understandable and almost always counterproductive: it is visible in the ledgers, it invites a wider review, and it costs credibility at the exact point where the seller is asking the buyer to accept warranty limits and a sensible dispute mechanism.

Where to start

Working capital is one of three mechanics that sit between the headline figure and the money received; the others are covered in cash-free, debt-free and enterprise value and equity value. For a view of value on your own figures, request a confidential valuation, or see selling a business for how the process runs. Further reading is collected in the business valuation Insights archive.

This page is general information about the law and tax treatment of business sales in the United Kingdom as at 9 August 2026. It is not personal advice, and the treatment of any particular transaction depends on how the deal is structured, the shareholders' own circumstances, the status of the company, the legislation in force at completion and the interpretation of your own accountant and solicitor. Take advice on your own facts before acting.