Goods wait in stock for DIO days and the invoice waits with the customer for DSO days; the supplier waits DPO days for the company’s own payment. The cash goes out when the supplier is paid and comes back when the customer pays, and the gap is the cycle.
A worked example
Stock sells in 60 days, customers pay in 45 and suppliers are paid in 40: CCC = 60 + 45 − 40 = 65 days. For sixty-five days the money spent on goods is tied up before it returns as a payment. Turned round, a company that wants a 30-day cycle with the same stock and customers would need 75 days of supplier credit.
Why it matters
The cycle is the working capital the business needs, expressed in days: a company selling 1,000 a day at cost with a 65-day cycle has 65,000 of its own money permanently out on the shelf and in customers’ hands. Growing sales at the same cycle means finding more of it. Shortening the cycle, by faster collection, less stock or longer supplier terms, releases cash without a single extra sale.
A negative cycle
A supermarket sells goods for cash within days and pays the supplier weeks later: DIO + DSO is small and DPO large, and the cycle is negative. The customers finance the stock, and growth brings cash in rather than tying it up. Subscription businesses paid in advance work the same way.
Common mistakes
- Adding DPO instead of subtracting it. Supplier credit shortens the cycle.
- Taking the three counts from different periods. All three need the same period and the same day count.
- Reading a short cycle as health on its own. A cycle shortened by paying suppliers late has a cost elsewhere.
Frequently asked questions
What is a good cash conversion cycle?
Shorter than the industry’s, and falling. The level depends on the trade: a manufacturer with long
production runs cannot match a grocer.
How does it relate to working capital?
Working capital is the amount; the cycle is how long each unit of it is tied up.
Days times daily cost of sales is roughly the amount.
What is the operating cycle?
DIO + DSO, before the supplier credit is taken off: the days from buying the goods to being paid for them.