Average Collection Period Calculator — DSO
Find out how many days on average it takes your business to collect payment after a credit sale — a key metric for cash-flow health and credit policy effectiveness.
days
Average number of days to collect payment after a credit sale
- 1
Receivables turnover ratio
600,000 ÷ 50,000 = 12 - 2
Average collection period
365 ÷ 12 = 30.4Days in the period divided by how many times the receivable balance turns over.
How does this calculator work?
Average Collection Period = (Accounts Receivable ÷ Net Credit Sales) × Days. It measures how long a business waits on average to collect cash after a credit sale. Enter your AR balance, net credit sales and period length to get ACP in days and the receivables turnover ratio.
Formula
How this is calculated
The Average Collection Period (ACP), also called Days Sales Outstanding (DSO), measures how long a business waits between making a credit sale and receiving the cash. Divide the average accounts-receivable balance by total net credit sales for the period, then multiply by the number of days (usually 365 for annual data). A lower ACP means faster cash collection; a higher ACP may signal slow-paying customers, lax credit terms, or collection inefficiency.
The receivables turnover ratio is the inverse: net credit sales divided by average AR. A turnover of 8× means the business collects its entire outstanding balance eight times a year, implying an ACP of about 46 days. Both metrics are most useful compared against prior periods and industry benchmarks — a healthy ACP varies widely by sector and standard payment terms.
Two important limitations: ideally use the average of the opening and closing AR balances rather than just the period-end figure, as a single snapshot can be distorted by seasonality. Also, the formula counts calendar days including weekends; some credit teams prefer a working-days basis, which produces a slightly different number.
Frequently asked questions
A business offering net-30 terms should aim for an ACP below 35–40 days. Longer credit terms (net-60, net-90) naturally produce higher ACPs, which is not necessarily bad if it reflects deliberate commercial policy. Compare your ACP to your stated payment terms and to industry averages for the most meaningful benchmark.
Common approaches include offering early-payment discounts, automating invoice delivery and reminders, tightening credit approval standards, following up on overdue accounts promptly, and switching from monthly to immediate invoicing. Requiring deposits or milestone payments before completion also reduces ACP directly.
They contain identical information expressed differently. Turnover = Net Credit Sales ÷ AR (how many times per period the balance is collected). ACP = Days ÷ Turnover (how many days each collection cycle takes). A higher turnover always corresponds to a lower ACP.
Also known as
TG we-Calculate Editorial Team. (2026). Average Collection Period Calculator — DSO [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/average-collection-calculator
TG we-Calculate Editorial Team. "Average Collection Period Calculator — DSO." TG we-Calculate. 2026. https://we-calculate.com/calculator/average-collection-calculator.
TG we-Calculate Editorial Team, "Average Collection Period Calculator — DSO," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/average-collection-calculator
@misc{wecalculate_average_collection_calculator, title = {Average Collection Period Calculator — DSO}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/average-collection-calculator}}, year = {2026}, note = {TG we-Calculate} }
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