Metrics
DSO (Days Sales Outstanding)
Quick definition
Average number of days between invoicing a customer and collecting payment.
DSO measures how long, on average, it takes to collect cash after billing. Formula: (Accounts Receivable ÷ Total Credit Sales) × Days in Period. Healthy SaaS DSO: 30-45 days. Stressed: 60-75 days. Risky: 90+ days. Rising DSO is a leading indicator of cash crunch — AR is growing faster than cash collection. Mitigation: Net-15 or Net-30 payment terms, automated dunning, early-payment discounts, focus on collection of largest invoices first.
Related metrics terms
ARR (Annual Recurring Revenue)
Annualized value of your subscription revenue at a point in time.
MRR (Monthly Recurring Revenue)
Monthly equivalent of ARR, useful for month-over-month tracking.
Net Revenue Retention (NRR)
Revenue from your existing customer base 12 months later, including expansion and churn.
Gross Revenue Retention (GRR)
NRR without upsell — what you keep before expansion.
Frequently asked questions
- What is DSO (Days Sales Outstanding)?
- DSO measures how long, on average, it takes to collect cash after billing. Formula: (Accounts Receivable ÷ Total Credit Sales) × Days in Period. Healthy SaaS DSO: 30-45 days. Stressed: 60-75 days. Risky: 90+ days. Rising DSO is a leading indicator of cash crunch — AR is growing faster than cash collection. Mitigation: Net-15 or Net-30 payment terms, automated dunning, early-payment discounts, focus on collection of largest invoices first.
- Why is DSO (Days Sales Outstanding) important for startups?
- DSO (Days Sales Outstanding) is a metrics concept that matters for startup founders because it directly affects fundraising readiness, financial decision-making, or operational discipline at the stage where mistakes are expensive to undo. Founders who understand it have a meaningfully easier time in diligence, board meetings, and investor conversations.
- What category does DSO (Days Sales Outstanding) belong to?
- DSO (Days Sales Outstanding) is a Metrics term in the StartupCFO finance glossary — alongside other metrics concepts that founders, CFOs, and accountants use in daily startup operations and reporting.
- Where can I learn more about DSO (Days Sales Outstanding)?
- Beyond this definition, see the related metrics terms below, or explore StartupCFO's insights and tools that put DSO (Days Sales Outstanding) in context. For specific situations, talk to a fractional CFO who can walk through your numbers.
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