Financial Glossary
Average Collection Period (Days Receivable)
The average collection period, also called days sales outstanding (DSO) or days receivable, measures the average number of days a business takes to collect payment after a sale is made. It is calculated by dividing accounts receivable by average daily credit sales. A lower number indicates faster collections and better working capital efficiency; a higher number signals that cash is being tied up in unpaid invoices. The metric is most relevant for businesses that extend credit terms to customers rather than collecting payment at the point of sale.
Problem & Application
Professional services firms, B2B SaaS companies, and any business billing on net-30 or net-60 terms can see their cash position deteriorate even while revenue grows, simply because collections lag behind invoicing. A fractional CFO firm or a staffing company that invoices clients monthly and collects on average 55 days later has nearly two months of revenue perpetually tied up in receivables. Monitoring the average collection period over time identifies whether payment behavior is improving or deteriorating before cash actually runs short. For businesses seeking a line of credit, lenders examine DSO closely as an indicator of receivables quality.
In Short
Revenue recognized is not the same as cash in hand. Tracking your average collection period tells you how efficiently your revenue converts to cash and gives you early warning before a receivables problem becomes a liquidity problem.