Days Sales Outstanding Calculator
Compute DSO from accounts receivable and credit sales for any period length with collection efficiency insights.
Measuring collection speed with DSO
Days sales outstanding (DSO) estimates how long it takes to collect credit sales. Finance teams track it to spot slowing collections before cash flow tightens.
$$ \mathrm{DSO} = \frac{\mathrm{Accounts\ Receivable}}{\mathrm{Credit\ Sales} / \mathrm{Period\ Days}} $$
Explore related metrics with the Debt Ratios Calculator and Margin Calculator.
Frequently Asked Questions
Which sales figure should I use?
Use credit sales only (not cash sales) for the same accounting period as your receivable balance.
Can I use a quarterly period?
Yes. Enter total credit sales for the quarter and set period days to 90 (or the exact day count you report).
What is a healthy DSO?
It varies by industry. Compare your result to prior periods and to peers rather than a single universal target.
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