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The formula and what each element means
Days Inventory Outstanding (DIO) is the average number of days stock sits before being sold: (average inventory ÷ cost of goods sold) × 365. Days Sales Outstanding (DSO) is debtor days: (average trade debtors ÷ revenue) × 365. Days Payable Outstanding (DPO) is the reverse — how long you take to pay suppliers: (average trade creditors ÷ COGS) × 365.
A short CCC means cash cycles through quickly and the business needs less working capital to sustain a given level of revenue. A long CCC typically signals a need for invoice finance, revolving credit, or stock finance.
Why it matters to lenders
When a business applies for working-capital finance, lenders use CCC to size the facility. A company with DSO of 60 days and DIO of 30 days but DPO of 15 days has a CCC of 75 days — meaning almost every pound of revenue is locked up for over two months before returning as cash. This is a quantifiable, lendable gap.
Invoice finance facilities are typically sized as a percentage of the eligible debtor book, which is itself driven by DSO. Understanding your own CCC allows you to present a coherent case to a lender and negotiate facility limits that reflect operational reality rather than guesswork.
How to shorten the cycle
Operational levers include tightening credit terms for customers, offering early-payment discounts, reducing stock holding through better demand forecasting, and negotiating extended payment terms with suppliers. Each lever has a cost or commercial implication, so the optimum CCC is rarely zero.
- Reduce DSO: invoice promptly, chase proactively, consider invoice financing for large debtors
- Reduce DIO: adopt just-in-time purchasing where supply chains allow
- Extend DPO: negotiate 45- or 60-day terms with key suppliers without jeopardising relationships
Frequently asked questions
Can a business have a negative cash conversion cycle?
Yes. Retailers and subscription businesses often collect cash before paying suppliers — customers pay at point of sale while suppliers are paid on 30- or 60-day terms. A negative CCC is a structural advantage and reduces or eliminates the need for working-capital financing.
Is CCC useful for service businesses without stock?
Partially. Service businesses set DIO to zero and focus on DSO minus DPO. For professional services firms, debtor days is typically the dominant driver of working-capital need.
Funding for UK limited companies
Credicorp lends to your company, not to you personally — short-term working capital with no personal guarantee. See what your business could access.