FNDFoundationsStop 5 of 7
Cash conversion cycle
How long cash stays tied up in operations: DIO + DSO − DPO, and the supply chain levers behind each part.
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The cash conversion cycle (CCC) measures how many days a company’s own cash is tied up in running the business, from paying for materials to collecting from customers:
- DIO (days inventory outstanding): how long stock sits before it’s sold.
- DSO (days sales outstanding): how long customers take to pay after a sale.
- DPO (days payable outstanding): how long the company takes to pay its suppliers.
Suppose DIO is 60 days, DSO 30 and DPO 45. Then CCC = 60 + 30 − 45 = 45 days. Goods sit 60 days and customers pay 30 days after that, a 90-day operating cycle, but suppliers effectively finance the first 45 days, so the company funds 45 days itself.
Each part maps to supply chain decisions:
- DIO: forecasting, safety stock, segmentation, MEIO, clearing slow and obsolete stock.
- DSO: order-to-cash speed, invoicing accuracy, dispute handling, credit terms.
- DPO: procurement terms and payment timing.
Some businesses run a negative CCC: with DIO 20, DSO 10 and DPO 45, CCC = −15 days. Customers’ cash arrives before suppliers are paid, so growth funds itself, as in some retail and e-commerce models.
A warning interviewers like: lower isn’t always better. Cutting inventory until stockouts appear, or stretching suppliers until they fail, improves the number while damaging the business.
Words to use
- DIO
- Inventory ÷ cost of goods sold × 365: days stock sits before it is sold.
- DSO
- Receivables ÷ revenue × 365: days customers take to pay.
- DPO
- Payables ÷ cost of goods sold × 365: days the company takes to pay suppliers.
From the accounts to the days
Inventory and payables are compared with the cost of goods sold, because both are recorded at cost; receivables are compared with revenue, because customers owe the selling price.
Revenue ₹500 crore, cost of goods sold ₹350 crore. On the balance sheet: inventory ₹57.5 crore, receivables ₹41.1 crore, payables ₹43.2 crore.
- DIO = 57.5 / 350 × 365 ≈ 60 days.
- DSO = 41.1 / 500 × 365 ≈ 30 days.
- DPO = 43.2 / 350 × 365 ≈ 45 days.
- CCC = 60 + 30 − 45 = 45 days.
Cutting inventory by 10 days of cost of goods sold releases 350 / 365 × 10 ≈ ₹9.6 crore of cash, once. At a 10% cost of capital, that is worth nearly ₹1 crore a year.
Where each part comes from
| Component | Main levers |
|---|---|
| DIO | Forecast accuracy, safety stock policy, lead times, batch sizes, network design, clearing slow and obsolete stock |
| DSO | Fast and accurate invoicing, proof of delivery, resolving disputes quickly, credit terms and collections |
| DPO | Payment terms, payment run timing, supply chain finance |
Supply chain work touches all three: inventory decisions, the order-to-cash process that triggers invoicing, and the procure-to-pay process that sets payments.
Measurement traps
- Year-end balances: inventory and payables on 31 March can be managed (delaying purchases, holding payments) to make the ratios look better. Averages over the year, or monthly figures, are harder to dress up.
- Seasonal businesses: a single date can be misleading if stock builds before a festive season.
- Different definitions: some calculate DPO on purchases rather than cost of goods sold; comparisons need the same basis.
Negative cycles as a business model
Some retailers and online platforms collect cash from customers immediately, turn inventory quickly and pay suppliers on normal terms, so the cycle is negative: suppliers effectively finance the business, and growth generates cash instead of consuming it. Dell’s build-to-order model in the 1990s, collecting payment before building the computer, became a classic example. Achieving this depends on bargaining power and fast inventory turns, not on stretching suppliers until they suffer.
Supplier finance and disclosure
When buyers lengthen payment terms and suppliers are paid early by a bank through reverse factoring, the buyer’s DPO rises while suppliers still get their cash. Because this can make working capital look better than it is, accounting standards now require disclosure of supplier finance arrangements (amendments to IAS 7 and IFRS 7 issued in 2023), so investors can see their effect.
Limits on stretching suppliers
In India, payments to registered micro and small enterprises must be made within 45 days, and late payments also affect tax deductions. Supplier health matters too: suppliers squeezed for cash raise prices, cut quality or fail. DPO improvements should come from fair terms and efficient processes, not from paying late.
CCC and value
Working capital is part of the capital a business employs. Reducing it raises return on capital and free cash flow, which is why investors and boards watch the cash conversion cycle closely, and why supply chain improvements that cut inventory without hurting service are valued highly.
Interview kit
Practise it out loud
Answer each question yourself before opening the model answer.
The cash conversion cycle is DIO plus DSO minus DPO: how many days the company’s own cash is tied up between paying suppliers and collecting from customers. I’d improve it by working on each part: DIO through better forecasting, segmented safety stock and clearing slow stock; DSO through faster, accurate invoicing and dispute resolution; DPO through procurement terms, while protecting service and supplier health.
DIO is 60, DSO 30 and DPO 45. What is the CCC, and what does it mean?
45 days. The operating cycle is 90 days, inventory plus collection, but suppliers finance 45 of those days, so the company must fund 45 days of operations from its own working capital.
How would you reduce a company's CCC?
Decompose it first. For DIO: improve forecast accuracy, set safety stock by segment, use MEIO and clear obsolete stock. For DSO: invoice faster and correctly, resolve disputes and enforce terms. For DPO: negotiate longer terms or use supplier finance. Avoid simply cutting stock or delaying payments, which can hurt service and suppliers.
Connected stops
Where this idea feeds in, or gets its inputs from.
Sources and further reading
- Farris, M. T. & Hutchison, P. D. (2002). Cash-to-cash: the new supply chain management metric. International Journal of Physical Distribution & Logistics Management, 32(4), 288–298.
- Chopra, S. & Meindl, P. Supply Chain Management: Strategy, Planning, and Operation. Pearson.
- Richards, V. D., & Laughlin, E. J. (1980). A cash conversion cycle approach to liquidity analysis. Financial Management, 9(1), 32–38.
- Hofmann, E., & Kotzab, H. (2010). A supply chain-oriented approach of working capital management. Journal of Business Logistics, 31(2), 305–330.