When this number starts to matter
- The income statement shows a profit but the bank balance keeps tightening, and you want to know which stage is holding the cash.
- A customer order three times your usual size is on the table and you need to know how much cash it consumes before it pays back.
- You are negotiating supplier terms and want to know what another 15 days of credit is actually worth.
- A customer wants to move from 30-day to 60-day terms and you need to price that concession before replying.
- You have to explain to a bank or an investor why the working capital facility needs to be that size.
How the three turnover figures are calculated
The cash conversion cycle is built from three turnover figures, calculated separately and then added and subtracted. Watch the denominators — they are not the same, and that is where this calculation is most often got wrong.
| Metric | Formula | Question it answers |
|---|---|---|
| DIO | Inventory ÷ COGS × days in period | How long stock sits before it sells. |
| DSO | Receivables ÷ revenue × days in period | How long after a sale the money actually arrives. |
| DPO | Payables ÷ COGS × days in period | How long after a purchase you actually pay. |
| Operating cycle | DIO + DSO | Goods arriving to cash arriving. |
| CCC | DIO + DSO − DPO | The days inside that span you have to fund yourself. |
Receivables are booked at selling price, so DSO takes revenue as its denominator. Inventory and payables are booked at cost, so DIO and DPO take COGS. Dividing all three by revenue understates DIO and DPO systematically, and the higher the gross margin the larger the error.
Why the length of the cycle sets how much cash you need
The CCC is a number of days. Multiply it by daily operating spend and you have the money this business must keep permanently out in the world just to keep trading. It never appears on the income statement — it sits inside receivables and inventory.
- A longer cycle means more working capital for the same revenue, and that money usually comes from a lender or a shareholder.
- Growth magnifies it: double the revenue and you roughly double the capital tied up, while profit takes longer to replace it.
- This is how a company posts profits for several periods and still cannot make payroll — profit is an accrual figure, and wages are paid in cash.
Where a long cycle breaks first
- Buying stock needs cash, so the credit line gets drawn or supplier payments slip.
- Suppliers notice the slower payments, tighten terms and ask for deposits. DPO shrinks and the gap widens again.
- With the facility maxed out you start declining orders, and revenue falls.
- Revenue falls while fixed costs stay, and only now does the loss show up on the income statement — long after cash was the problem.
The order is worth remembering: cash breaks first, the accounts break later. By the time the income statement shows it, the easiest window to fix it has usually passed.
Four ways to shorten it, and what each one costs
- Collect sooner — invoice earlier, bill in stages, discount for early payment. The discount comes straight out of gross margin, so compare it against your cost of capital first.
- Hold less stock — fewer lines, smaller and more frequent orders. You trade that against stock-out risk and the price breaks that come with volume.
- Pay later — negotiate longer supplier terms. This spends negotiating capital and goodwill; a customer known for slow payment is the first one a supplier raises prices on.
- Choose customers — avoid the large accounts with punishing terms. It costs revenue, and it is usually the hardest and the most effective of the four.
The “what one day is worth” panel exists to make that trade-off numeric: knowing what collecting a day sooner is worth is what tells you whether an early-payment discount pays for itself.
The household version lives on its own page
The same timing logic holds for a household: a stockpile stands in for inventory, the wait for payday stands in for receivables, and credit card float stands in for payables. What you type in is entirely different though — ledger accounts on one side, groceries and paydays on the other — so they are two separate tools, each free to explain itself properly.
For a household, use the household cash cycle calculator. That page also separates the cash normal life needs from the emergency fund that covers income stopping, a distinction that matters far more for a household than for a company.
What this tool deliberately does not do
- No industry benchmarks. The business model shapes in the results are qualitative and exist to help you catch a mistyped input, not to be cited. Real benchmarks come from competitor filings.
- No financial advice. This runs formulas. Whether to offer an early-payment discount or push for longer terms depends on your cost of capital, your supplier relationships and your industry’s norms, none of which is in the calculation.
- No accrual-to-cash reconciliation. These are turnover estimates, not a cash flow statement, and a single quarter will distort a strongly seasonal business.
Do the figures you enter leave the browser
No. Revenue, costs and those three balances are among the most sensitive numbers a company has. All of them are computed in your browser, no request carries them anywhere, and nothing is written to browser storage — closing the tab is enough. The exported CSV and report are both assembled on your own machine. See the privacy policy for the details.
Frequently asked questions
- Should receivables be the closing balance or an average?
- Either works. The closing balance is quicker to pull and suits monthly self-tracking; averaging opening and closing smooths out seasonal peaks and compares better against published annual reports. What matters is using the same basis every period so the trend means something.
- Why does DSO use revenue while DIO and DPO use COGS?
- Because of how each balance is recognised. Receivables are booked at selling price, so they belong against revenue; inventory and payables are booked at cost, so they belong against COGS. Dividing all three by revenue systematically understates DIO and DPO, and the higher your gross margin the worse the distortion.
- Does a negative CCC mean the business is doing well?
- It means the cash timing is favourable, which is not the same as being profitable. A negative CCC only says you collect from customers before paying suppliers, and a business on razor-thin margins can still have one. Profitability lives on the income statement; this number is about timing.
- Can a service business with no inventory use this?
- Yes — leave inventory at zero. The cycle then becomes DSO minus DPO, measuring the gap between customers paying you and you paying out. That is just as meaningful for consulting, design or software work.
- Can the business model shapes be cited as industry benchmarks?
- No. They are qualitative shapes meant to help you spot a mistyped figure — a manufacturer landing on 10 days almost certainly has an input wrong. There is no statistical source behind them. For real benchmarks, use competitor filings or an industry study.