A company reports a cash conversion cycle of 50 days.The same as last year.Management concludes that working capital efficiency has remained stable.At first glance, the conclusion seems reasonable.But a closer examination reveals a different picture.Customers are taking longer to pay. Inventory is staying in warehouses for more days. The company is compensating by delaying payments to suppliers.The headline metric has not changed.The underlying business has.
The same CCC can hide deterioration
01The Problem with Looking Only at CCC
The cash conversion cycle measures the time between cash paid for inventory and cash collected from customers.
CCC = DSO + DIO − DPO
A shorter CCC generally indicates that less time is required to convert operating activity into cash.
However, the same CCC can result from very different operating conditions.
Consider the following example.
| Metric | Year 1 | Year 2 | Change |
|---|---|---|---|
| Days Sales Outstanding | 40 | 50 | +10 |
| Days Inventory Outstanding | 60 | 75 | +15 |
| Days Payable Outstanding | 50 | 75 | +25 |
| Cash Conversion Cycle | 50 | 50 | 0 |
Illustrative example.
The CCC remains unchanged at 50 days.
But customer collections have slowed by 10 days.
Inventory is being held for an additional 15 days.
To compensate, the company has extended supplier payments by 25 days.
The apparent stability of working capital is being supported by suppliers rather than improvements in operational efficiency.
02When Suppliers Finance Inefficiency
Extending supplier payment terms is not necessarily a bad decision.
Longer terms can be commercially reasonable, particularly when negotiated transparently and supported by strong supplier relationships.
The concern arises when increasing DPO becomes the primary mechanism for offsetting deteriorating receivables and inventory.
This may create several risks.
Suppliers may increase prices, reduce credit limits, withdraw early-payment discounts or become less willing to prioritize the company's orders.
Some suppliers may also experience financial pressure, potentially affecting supply continuity.
The business may have protected its short-term cash position while weakening its operating resilience.
03What the Headline Number Does Not Tell Us
A Finance Director should examine each component of CCC separately.
Accounts Receivable: Are customers paying more slowly because of weak collection processes, disputes, longer contractual terms or deteriorating credit quality?
Inventory: Is the business carrying additional stock because of demand uncertainty, poor forecasting, purchasing decisions or obsolete products?
Accounts Payable: Are longer payment periods the result of negotiated terms, deliberate cash management or overdue invoices?
These distinctions matter.
A company that improves CCC by reducing unnecessary inventory and collecting receivables more effectively is not in the same position as one that achieves the same result by accumulating overdue supplier balances.
The metric may be identical.
The quality of the improvement is not.
04Working Capital Is a Cross-Functional Decision
Finance can measure working capital, but it cannot improve every component alone.
Sales influences payment terms and customer collection behavior.
Procurement influences purchasing quantities, supplier contracts and payment terms.
Operations influences inventory planning, fulfilment and stock levels.
Finance connects these decisions to liquidity, financing requirements and returns on capital.
This means working capital improvement should not be treated merely as a Finance KPI exercise.
It requires coordinated decisions across the business.
05From KPI Monitoring to Financial Judgment
A useful working capital review should answer three questions.
1. What is changing?
Identify movements in DSO, DIO and DPO rather than relying solely on CCC.
2. Why is it changing?
Separate operational improvements from temporary financing measures or deteriorating business practices.
3. Is the change sustainable?
Assess whether the business can maintain its cash position without damaging customer relationships, supplier resilience or future growth.
The objective is not simply to achieve the lowest possible CCC.
It is to improve the efficiency and resilience of the cash conversion process.
A stable cash conversion cycle does not necessarily mean healthy working capital. It may simply mean that suppliers are financing operational inefficiencies.
Research inspiration: PwC — Working Capital Study 25/26. The financial examples and management frameworks are original and hypothetical, not findings or company data from the study.
Back to Retail ↗