Revenue Metrics

Expansion Revenue

Additional revenue generated from existing customers through upsells, cross-sells, seat additions, or usage growth.

Expansion revenue is the compounding advantage of subscription businesses — it comes from customers you have already acquired, so the incremental CAC is near zero. When expansion revenue outpaces churn, a business can grow even without acquiring a single new customer. The mechanisms include moving customers to higher-tier plans, adding more seats as teams grow, charging for additional product modules, and billing for usage beyond their contracted amount. Expansion revenue is tracked as expansion MRR and is the difference between gross revenue retention and net revenue retention. Products with strong product-market fit and a natural growth dimension — usage, users, data — generate expansion revenue organically. Others must build deliberate sales plays, triggered by usage thresholds or lifecycle milestones, to surface and close upgrade opportunities.