Accounting & Bookkeeping

What is Days Sales Outstanding (DSO)?

The average number of days it takes a company to collect payment after a sale has been made.

How It Works

Days Sales Outstanding measures collection efficiency — how quickly a business converts its receivables into cash. A lower DSO means faster collection and better cash flow. High DSO indicates collection problems, lenient credit policies, or customer financial difficulties. DSO is critical for working capital management and varies significantly by industry (B2B services: 45–90 days, retail: 0–5 days). Tracking DSO trends over time reveals deteriorating customer payment behavior before it becomes a crisis.

Formula

DSO = (Accounts Receivable ÷ Total Credit Sales) × Number of Days in Period

Real-World Example

A B2B company has AR of ₹15,00,000 at month-end. Monthly credit sales: ₹20,00,000. DSO = (₹15,00,000 ÷ ₹20,00,000) × 30 = 22.5 days. Industry average is 35 days, so this company collects faster than peers. If DSO rises to 40 days, it means ₹5,00,000+ additional cash is locked in receivables.

Why It Matters

1

Ensures accurate financial reporting and record-keeping

2

Helps maintain regulatory and tax compliance

3

Enables better-informed business decisions

4

Improves operational efficiency and cash flow management

Frequently Asked Questions

What is a good DSO number?

It depends on your payment terms and industry. If you offer 30-day terms, DSO should be 30–35 days. Over 45 days with 30-day terms indicates collection issues. Industry benchmarks: SaaS/subscriptions: 30–40, Professional services: 45–60, Manufacturing: 40–55, Construction: 60–90.

How can a business reduce its DSO?

Strategies: Offer early payment discounts (2/10 net 30), Send invoices immediately upon delivery, Automate payment reminders, Accept digital payments (UPI/cards), Screen customer creditworthiness before extending credit, Implement strict follow-up at 15/25/30 days, and Consider invoice factoring for persistent slow payers.

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