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DSO Calculator

Calculate your Days Sales Outstanding (DSO) to measure how efficiently your business collects payments.

Calculator inputs

DSO = (Average accounts receivable ÷ Net credit sales) × Number of days

Total credit sales for the period, before returns or allowances.

Average AR balance during the same period.

Use 365 for annual periods, 90 for a quarter, or 30 for a month.

Your DSO

Enter your values and calculate to see days sales outstanding.

What is DSO?

Days Sales Outstanding (DSO) measures how long it takes, on average, to collect payment after a credit sale. It is a core accounts receivable metric for understanding collection speed.

How is DSO calculated?

DSO = (Average accounts receivable ÷ Net credit sales) × Number of days. Use the same period for all three inputs—for example, annual sales, average AR, and 365 days.

Why DSO matters

Higher DSO ties up cash in unpaid invoices. Tracking DSO over time helps finance teams spot collection slowdowns early and prioritize follow-up.

How Arrexia helps reduce DSO

Arrexia improves invoice tracking, automates payment reminders, and surfaces overdue balances so teams follow up consistently—without adding accounting complexity.

Track invoices and reduce DSO with Arrexia

Use invoice tracking, payment reminders, and overdue visibility to improve collections.