Days Sales Outstanding (DSO)
Definition
Days sales outstanding (DSO) measures the average number of days it takes a company to collect payment after a sale is made. A lower DSO indicates faster cash collection and healthier cash flow, while a rising DSO may signal collection issues or overly lenient credit terms with customers.
Formula
Overview
Days sales outstanding (DSO) translates accounts receivable into a time-based metric that is easy to benchmark and track. It answers: on average, how many days does it take to turn a sale into cash in the bank?
For SaaS companies billing on credit card, DSO is typically very low (1 to 3 days for payment processing). However, companies with enterprise clients on invoice terms often see DSO of 30–60 days or higher. Blended DSO across a customer base with mixed payment methods provides the overall picture.
Tracking DSO month-over-month reveals collection trends. A gradually rising DSO, even if individual customers are paying on time, may indicate a shift in customer mix toward longer-term payers. A sudden spike often points to a specific customer or cohort that is delayed. Proactive collections, such as automated reminders, clear payment terms, and early-payment incentives, are the most effective ways to manage DSO.
Example
With $60K in receivables and $180K in credit sales for the quarter (90 days): DSO = ($60K ÷ $180K) × 90 = 30 days.
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