DSO (Days Sales Outstanding)

Days Sales Outstanding is the average number of days between issuing an invoice and receiving payment, calculated as accounts receivable divided by average daily revenue. A consulting firm with 300,000 dollars in receivables on 200,000 dollars in monthly revenue has a DSO of roughly 45 days. The number captures how efficiently the business is collecting cash from work it has already delivered. Low DSO means cash moves through the business quickly. High DSO means revenue has been earned on paper but the cash has not arrived, and the business is essentially financing its customers with its own working capital.

For B2B services firms, agencies, and any business invoicing on net 30 or net 60 terms, DSO is the single most important working capital metric. A growing agency with a 90-day DSO can grow itself into a cash crisis even while booking record revenue, because every new client adds receivables that have to be funded for three months before the cash arrives. The pattern hits hardest during growth phases when staff costs scale immediately but client payments lag by quarters. Founders who ignore DSO discover the problem when payroll is due and the bank account is light, even though the income statement looks healthy.

The standard playbook for cutting DSO runs through five moves: shorter payment terms in new contracts, deposit requirements before work begins, automated invoice delivery the day work completes, structured follow-up sequences on overdue invoices, and bank-direct payment methods that clear faster than cheques. The AI Ops Department handles the operational layer of receivables monitoring and follow-up, surfacing overdue invoices the day they cross threshold and triggering escalation sequences automatically. Most funded services businesses can cut DSO by 15 to 30 days through process discipline alone, which can free hundreds of thousands of dollars in trapped working capital without changing pricing or growth pace.