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Working capital and cash conversion

Working capital connects collection, inventory and payment timing to operating cash; its change explains why revenue, profit and liquidity may diverge.

In plain language — A company can sell today, collect in two months and pay its supplier in one. Working capital describes this time suspended between business activity and cash.

Operational working capital commonly focuses on trade receivables, inventory and trade payables, together with other current operating items. Definitions vary. Some users calculate current assets minus current liabilities; others exclude cash and financial debt to isolate operations. A comparison is meaningful only after the formula is stated.

Why growth can consume cash

A credit sale records revenue before collection. Inventory requires resources before a sale. Supplier payables work in the opposite direction by delaying a cash outflow. When receivables and inventory rise more than operating payables, working-capital changes usually absorb cash; when they fall or payment terms extend, they may release cash.

This is one reason profit and operating cash flow differ. Cash absorption is not automatically bad: inventory can rise ahead of a strong season or to protect production. The useful question is whether the change fits sales, seasonality and commercial terms.

Collection, inventory and payment timing

The cash conversion cycle combines days sales outstanding, days inventory and days payable. It compresses different dynamics into one number, so it is an indicator rather than a diagnosis. A shorter cycle may show efficiency, but it can also reflect dangerously low inventory or pressure on suppliers. Negative cycles are normal in some prepaid models.

Compare each component with revenue or cost of sales and with the same season in the prior year. Look for changes in credit policy, overdue receivables, allowances, obsolete stock and factoring. Notes to the financial statements help separate organic change, acquisitions and reclassifications.

Connection to cash flow and earnings quality

In free cash flow, working-capital change is often the clearest bridge from operating profit to cash. If revenue and EPS grow while collections repeatedly lag, earnings quality deserves attention. The pattern is not proof of manipulation; customer terms, contracts and the growth stage may explain it.

Advanced analysis normalizes seasonality, separates operating and financing components, and connects day assumptions to the forecast. It does not project a one-off working-capital release forever. Customer concentration, supply-chain-finance programs and vulnerability to supply shocks also matter. The purpose is to understand conversion, not assign an automatic verdict to the sign of one line.

A compact example

Suppose sales rise by 10 while receivables rise by 6 and supplier balances by only 1. Other things equal, the extra five tied up between collection and payment reduces operating cash in the period. It may reverse later, but the forecast must state when and why.

Sources

Financial statements · Free cash flow · Business model · DCF