What it means
Every business that holds stock and sells on credit has money tied up between paying for inputs and being paid for outputs. A manufacturer buys steel on day 0, pays for it on day 40 (using supplier credit), machines it into a product that sells on day 75 and is paid for on day 120.
From the manufacturer's point of view, cash left on day 40 and returned on day 120: a cycle of 80 days during which the business had to fund the steel, the labour and the overhead. Multiply that by the daily cost of sales and the result is the working capital the business needs simply to operate.
The three components each have their own drivers. Days inventory outstanding depends on the production process, purchasing policy, demand forecasting and range complexity; it is reduced by just-in-time supply, better forecasting, range rationalisation and faster production.
Days sales outstanding depends on payment terms, invoicing speed and collection discipline; it is reduced by shorter terms, prompt and accurate invoicing, and firm credit control. Days payables outstanding depends on the terms suppliers grant and the business's policy on using them; it is increased by negotiating longer terms and paying on the due date rather than early, within the limits of supplier goodwill and prompt payment codes.
The cycle differs enormously by business model. A supermarket sells goods for cash within days of receiving them and pays suppliers in 45 days: DIO 15, DSO 1, DPO 45, CCC minus 29.
Its suppliers finance its inventory and the business generates cash as it grows. A heavy engineering company holds materials and work in progress for months and sells to customers who pay in 60 days: CCC of 150 or more, so growth consumes cash.
A software company with no inventory and annual prepayments has a negative cycle; a distributor with wide ranges and slow-paying customers a long one. Comparisons are meaningful only within an industry.
Reducing the cycle releases cash permanently: each day cut from the cycle releases one day of cost of sales. A company with cost of sales of $73,000,000 a year ($200,000 a day) that reduces its cycle from 80 to 65 days releases $3,000,000 that would otherwise be borrowed or idle.
That cash costs nothing to release in accounting terms, since profit is unchanged, which is why working capital programmes are among the highest-return projects a finance function can run. The limits are commercial: stock too low loses sales, terms too tight lose customers, and suppliers stretched too far raise prices or withdraw credit.
The cycle is also a diagnostic. A lengthening cycle with no change in policy means inventory is building, customers are slowing or supplier terms are tightening, each of which is a question for management before it becomes a cash problem.
Lenders and analysts track it for the same reason, and it is a standard element of due diligence and covenant packages.
In practice
Real-world examples.
Example
A grocery retailer runs a cash conversion cycle of minus 20 days, so opening new stores generates cash rather than consuming it.
Example
An aerospace supplier with a cycle of 190 days needs a working capital facility that grows with every new contract.
Example
A wholesaler cuts its cycle from 70 to 48 days over two years and uses the released cash to repay its overdraft entirely.
Think of it
“The cash conversion cycle shows how long your money is locked up between paying for supplies and getting paid by customers.
Formula
Calculation
Cash Conversion Cycle = DIO + DSO minus DPO
Days Inventory Outstanding = Inventory / Cost of sales x 365
Days Sales Outstanding = Receivables / Credit sales x 365
Days Payables Outstanding = Payables / Cost of sales (or purchases) x 365
Working capital released per day of cycle reduction = Cost of sales / 365
Worked example. A furniture manufacturer has annual sales of $60,000,000, cost of sales $42,000,000, inventory $9,200,000, receivables $10,500,000 and trade payables $4,600,000.
- DIO = $9,200,000 / $42,000,000 x 365 = 80 days
- DSO = $10,500,000 / $60,000,000 x 365 = 64 days
- DPO = $4,600,000 / $42,000,000 x 365 = 40 days
- CCC = 80 + 64 minus 40 = 104 days
Working capital tied up = ($42,000,000 / 365) x 104 = about $12,000,000 (which is close to inventory plus receivables minus payables: $15,100,000, the difference being that receivables are at sales value rather than cost).
Improvement programme:
- Inventory: cut finished goods stock of slow lines and move to make-to-order for 30% of the range. Target DIO 62 days, releasing 18 days.
- Receivables: electronic invoicing at dispatch, reminders, and a 2% discount for payment within 10 days on selected accounts. Target DSO 50 days, releasing 14 days.
- Payables: renegotiate terms with the five largest suppliers from 30 to 45 days in exchange for volume commitments; pay on the due date, not before. Target DPO 50 days, gaining 10 days.
- Target CCC = 62 + 50 minus 50 = 62 days, a reduction of 42 days
Cash released = ($42,000,000 / 365) x 42 = $4,830,000.
Cost of the programme: early payment discounts taken by customers, about $180,000 a year; a stock write-down on discontinued lines of $250,000 one-off; systems $40,000. Interest saved on the released cash at 7%: $338,000 a year. Net annual benefit about $158,000 plus the $4,830,000 of cash itself, which repays a term loan.
Diagnostic use: in the following year, DSO drifts back to 58 days. The monthly CCC report flags it; investigation finds that a new sales manager has been granting 60-day terms to win accounts. The terms policy is reinstated with an approval step.Case study
Seen in the real world.
A mid-sized electronics distributor was growing at 20% a year and, despite good margins, needed a larger bank facility every year. The bank asked for a working capital analysis before agreeing the fourth increase. The finance director calculated the cash conversion cycle for the first time: DIO 95, DSO 71, DPO 28, CCC 138 days.
Every $1,000,000 of additional sales required about $270,000 of additional working capital, which at 20% growth meant $3,000,000 a year of new funding just to stand still. The components each had a story. Inventory was high because the company carried every line of every supplier to guarantee availability, including thousands of lines that sold once a year.
Receivables were high because the largest customers had negotiated 60-day terms and paid at 75. Payables were low because the company paid suppliers early to secure allocation of scarce products. Over eighteen months the company rationalised its range (cutting DIO to 60), introduced credit control and moved two major customers to 45-day terms (DSO to 52), and, having built a track record, negotiated 45-day terms with suppliers (DPO to 42).
The cycle fell to 70 days, releasing $8,000,000, and the bank facility was reduced rather than increased. The finance director's note recorded that the company had been growing itself into a funding crisis, and that the cure had been to measure something it had never measured.
Watch out
Common mistakes.
- Managing the three components separately in different departments (purchasing, sales, finance) so that one improves at the expense of another.
- Stretching suppliers to shorten the cycle without regard to their goodwill, pricing or the business's reputation for prompt payment.
- Comparing the cycle across industries. A negative cycle is normal for a supermarket and impossible for a shipbuilder.
Questions
People also ask.
What is a good cash conversion cycle?
Shorter is better within an industry; negative is excellent. Retailers with cash sales often run negative cycles; manufacturers typically 60 to 120 days; distributors 40 to 90.
Can the cycle be too short?
If achieved by stock-outs, aggressive terms that lose customers, or supplier strain, yes. The aim is the shortest cycle consistent with service, sales and supplier relationships.
How does the cycle relate to working capital?
Working capital tied up in operations is roughly cost of sales per day multiplied by the cycle. Shortening the cycle releases that cash without affecting profit.
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