Accounts Receivable Days Calculator (DSO)
Calculate Days Sales Outstanding (DSO) from accounts receivable, total credit sales, and period length to measure how quickly a business collects payment.
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365 for a year, 90 for a quarter, or any custom period
Days Sales Outstanding (DSO)
30.4 days
How to Use the Accounts Receivable Days Calculator (DSO)
Enter your accounts receivable balance, total credit sales for the period, and the number of days in that period (365 for a full year, 90 for a quarter, or any custom period). This calculates Days Sales Outstanding (DSO) — a measure of how many days on average it takes your business to collect payment after making a credit sale. A lower DSO means customers are paying faster, which improves cash flow.
Example
A business with $50,000.00 in accounts receivable and $600,000.00 in credit sales over a 365-day year has a DSO of (50,000 ÷ 600,000) × 365 ≈ 30.4 days — meaning it takes roughly 30 days on average to collect payment after a sale.
Common Use Cases
- Monitoring how quickly a business is collecting on credit sales over time.
- Comparing collection speed against industry peers or internal targets.
- Spotting early warning signs of cash flow trouble from slowing collections.
FAQs
- What's a good DSO? It depends heavily on your industry and standard payment terms, but a DSO close to or below your stated payment terms (e.g., 30-45 days for net-30 or net-45 terms) is generally considered healthy. A DSO significantly higher than your terms suggests collection problems.
- Should I use total sales or only credit sales? Use only credit sales — cash sales are collected immediately and shouldn't be included, since DSO specifically measures the collection cycle for sales made on credit.
- How does DSO relate to the Accounts Payable Days Calculator? DSO measures how fast you collect from customers, while Days Payable Outstanding (DPO) measures how long you take to pay your own suppliers. Comparing the two together shows your overall cash conversion timing — see the Accounts Payable Days Calculator for the DPO side.