Outcome KPIs
Retention Rate
% of users/customers still active at 30/60/90 days
Churn Rate
% lost per period; segment by cohort to identify whether it's an onboarding or value problem
LTV / CAC Ratio
Lifetime value divided by acquisition cost; 3:1 is a common SaaS baseline
Expansion Rate
% revenue growth from existing customers (upsell/cross-sell)
Referral Rate
% of new customers attributable to existing customer referrals
Core feature adoption
% of active users engaging with features most correlated with retention
Team KPI
Net Revenue Retention by Segment
NRR above 100% means existing customers cover growth without new acquisition; track by segment to know where you're healthy and where you're not