Accounts Receivable Turnover Calculator

Accounts receivable turnover counts how many times a year you collect the money your customers owe you. A turnover of 10 means the whole receivables balance is collected and rebuilt ten times over the year.

Turnover formula: AR Turnover = Annual Net Credit Sales ÷ Average Accounts Receivable

Days Sales Outstanding (DSO), also called Accounts Receivable Days, is the same fact stated in days rather than in times-per-year:

DSO = 365 ÷ AR Turnover

The two are reciprocals. High turnover and low DSO say exactly the same thing, that cash comes back fast. Turnover is what appears on a ratio sheet next to inventory turnover; DSO is what people actually argue about in an operations meeting. This page reports both from the same two numbers.

Where:

• Average Accounts Receivable (AR): what customers owe you, averaged across the year. Opening balance plus closing balance divided by two is close enough for most businesses.
• Annual Net Credit Sales: revenue from sales made on terms, not cash or card taken at the point of sale. Leaving cash sales in understates the collection lag on the invoices that genuinely wait.

Industry benchmark DSO ranges:

• Retail (cash-heavy): < 10 days
• Software/SaaS: 30–45 days
• Manufacturing: 45–60 days
• Construction: 60–90 days
• Healthcare: 40–75 days
• Government contractors: 60–120 days

DSO trend interpretation:

• DSO increasing over time → customers paying more slowly (cash flow risk)
• DSO decreasing → collections improving or payment terms tightened
• DSO > 2× your payment terms → significant collection problem

Worked example: A B2B software company has:

• Accounts Receivable: $150,000
• Annual Credit Sales: $1,500,000

Receivables Turnover = $1,500,000 ÷ $150,000 = 10 DSO = 365 ÷ 10 = 36.5 days

Their payment terms are Net 30. A DSO of 36.5 days means customers pay, on average, about 6.5 days late. This is slightly elevated but within acceptable range.

Cash flow impact: pulling DSO from 36.5 days back to 30 on $1,500,000 a year releases (6.5 ÷ 365) × $1,500,000 ≈ $26,700 of working capital. That is real money you can spend, rather than money parked in somebody else’s accounts payable queue.

Read the benchmark list above before you judge your own number. A construction firm at 75 days is normal and a SaaS business at 75 days has a collections problem, and no single verdict covers both. The comparison that always holds is against your own payment terms: anything past about twice your stated terms means the terms are not being enforced.