Randy Myers is a contributing editor of CFO.
How Working Capital Works
Days Sales Outstanding: AR/(total revenue/365)
Year-end trade receivables net of allowance for doubtful accounts, plus financial receivables, divided by one day of average revenue.
A decrease in DSO represents an improvement, an increase a deterioration. In the accompanying charts, companies marked with an asterisk have securitized receivables, which improve DSO through financing alternatives without improving the underlying customer-to-cash processes such as credit-risk assessment, billing, collections, and dispute management. The scorecard eliminates this distortion by adding securitized receivables back on the balance sheet before calculating DSO.
Days Inventory Outstanding: Inventory/(total revenue/365)
Year-end inventory divided by one day of average revenue.
A decrease is an improvement, an increase a deterioration.
Days Payables Outstanding: AP/(total revenue/365)
Year-end trade payables divided by one day of average revenue.
An increase in DPO is an improvement, a decrease a deterioration. For purposes of the survey, payables exclude accrued expenses.
Days Working Capital: (AR + inventory - AP)/(total revenue/365)
Year-end net working capital (trade receivables plus inventory, minus AP) divided by one day of average revenue.
The lower the number of days, the better. The percentage change is marked N/M (not meaningful) if DWC moved from a positive to a negative number or vice versa.
Note: Many companies use cost of goods sold instead of net sales when calculating DPO and DIO. Our methodology, however, uses net sales across the four working-capital categories to allow a balanced comparison.
This year's survey uses the Global Industry Classification Standard to categorize companies.


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Reader CommentsDisplaying 3 of 3
Tim Reason
Aug 19, 2009 11:43 AM ET
It's All about Timing
George, Thank you for your comment. You are correct that the year-end recession will have affected the CFO Working … more
George Hartley
Aug 19, 2009 11:11 AM ET
Timing difference
I normally think the CFO Working Capital survey is very helpful in benchmarking performance. I am very worried that … more
ProfGurbirCMA Khera
Jul 12, 2009 12:42 PM ET
Practically Insightful WCM
A must read for a management students to get an insight into working capital issues/scorecard in the … more
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