What the cash conversion cycle tells you
The cycle follows cash through day-to-day trading. A business buys stock, holds it until it sells, then waits for customers to pay. Days inventory outstanding and days sales outstanding measure those two waits. Suppliers usually allow time before their bills are due, and days payable outstanding measures that credit. Subtracting it shows how long the business must fund the gap itself.
A result of 45 days means that, on average, about 45 days pass between paying suppliers and collecting cash from customers. The business funds that gap from its own cash or from borrowing, and the amount it needs grows as sales grow.
Using the two methods
- From the three day counts: enter the three figures if you already have them, for example from your own reports or earlier calculations.
- From financial statement figures: enter inventory, cost of goods sold, accounts receivable, net credit sales and accounts payable. The calculator works out each day count first, using the same days in the period for all three. Add opening balances to use averages.
If you enter the day counts yourself, check that they were worked out the same way: over the same period, on the same day basis (365 or 360), and all from average balances or all from ending balances. Mixing forms changes the result. Days inventory outstanding based on ending inventory, for example, differs from one based on average inventory whenever stock levels changed during the year.
Reading a high or low result
- A shorter cycle means less cash is tied up in operations, so the business needs less funding as it grows.
- A longer cycle can reflect slow-moving stock, slow-paying customers or suppliers paid quickly. It may also be built into the business model, for example where production takes months.
The right length depends on the business model, so compare the cycle with the same business in earlier periods, or with similar businesses, and look at which of the three parts moved.
Why the cycle can be negative
A negative result means the business collects cash from customers before it pays its suppliers. This happens when stock sells quickly, customers pay at the time of sale or in advance, and suppliers allow longer credit than the time stock and receivables take to turn into cash. In effect, supplier credit funds part of the operations. The position depends on suppliers keeping their terms, and if sales slow, payments for earlier purchases can exceed the cash coming in.
What the cycle does not show
- It measures time, not amounts. A 30-day cycle in a large business ties up far more cash than the same cycle in a small one.
- It covers only inventory, receivables and payables. Other cash needs, such as rent, tax or loan repayments, sit outside it.
- It inherits the limits of each part, such as inventory valuation choices or payables that include bills unrelated to stock.
Common mistakes
- Adding days payable outstanding instead of subtracting it.
- Combining day counts from different periods or day bases.
- Using total revenue for days sales outstanding in a business where many sales are paid in cash, which makes the cycle look shorter.
- Comparing cycles across businesses with very different models and reading the gap as a difference in management.
Related measures
Each part has its own page. Inventory turnover shows how often stock sells, which converts into days inventory outstanding. Days sales outstanding covers the time taken to collect, and days payable outstanding the time taken to pay. Working capital subtracts current liabilities from current assets on one date, so it gives an amount rather than a number of days.