Days Sales Outstanding (DSO)

What Is Days Sales Outstanding?

DSO quantifies how quickly your customers pay you. The formula is: DSO = (Accounts Receivable / Total Credit Sales) x Number of Days. If your accounts receivable balance is $50,000 and you had $300,000 in credit sales over the last 90 days, your DSO is ($50,000 / $300,000) x 90 = 15 days.

For example, a consulting firm that invoices $100,000 per month and typically has $150,000 in outstanding receivables has a DSO of about 45 days. This means clients are taking an average of 45 days to pay their invoices.

Why It Matters for Your Business

DSO directly impacts your cash flow. The faster you collect, the more cash you have available for operations and growth.

• Cash flow predictor: A rising DSO means customers are taking longer to pay, which can create cash flow problems even if revenue is growing.
• Collection effectiveness: Tracking DSO over time tells you whether your invoicing and collection processes are working or need improvement.
• Industry benchmarking: Comparing your DSO to industry averages reveals whether your payment terms and collection practices are competitive.

Strategies to reduce DSO include offering early payment discounts, requiring deposits on large orders, invoicing immediately upon delivery, automating payment reminders, and establishing clear credit policies for new customers.