Overview

MRR (Monthly Recurring Revenue) and ARR (Annual Recurring Revenue) are the foundational metrics for subscription businesses, especially SaaS. MRR represents predictable monthly income from subscriptions; ARR is MRR × 12. Unlike one-time revenue, recurring revenue enables financial forecasting, valuation multiples, and sustainable growth.

Why MRR Matters

Predictability: Recurring revenue smooths cash flow, making it easier to plan hiring, marketing spend, and product development. Valuation: SaaS companies are valued at 5-15x ARR (vs. 1-3x revenue for traditional businesses). Higher multiples reward predictable income. Growth Metrics: MRR growth rate, churn rate, and net revenue retention (NRR) determine company health.

MRR Components

• New MRR: Revenue from new customers
• Expansion MRR: Upsells, cross-sells, additional seats from existing customers
• Churned MRR: Lost revenue from canceled subscriptions
• Contraction MRR: Downgrades from existing customers
• Net New MRR: (New + Expansion) - (Churned + Contraction)

Cultural Impact

MRR became the north star metric for SaaS founders. The “$10K MRR” and “$100K MRR” milestones became rites of passage celebrated on Twitter/Indie Hackers. “Post your MRR” threads created transparency and competition.

SaaS businesses optimized for MRR growth: annual plans (12x MRR upfront), usage-based pricing (expand MRR automatically), and reducing churn (every churned customer is permanent MRR loss).

Criticism

MRR obsession led to unsustainable growth tactics: heavy discounting, long contracts that inflated ARR without cash flow, and ignoring customer satisfaction (churn). Some founders gamed MRR (annual contracts counted as 12x MRR but weren’t truly “recurring”).

The metric also encouraged SaaS-ification of products that didn’t need subscriptions — one-time software became monthly rent, frustrating users.

Sources

• ChartMogul: What is MRR?
• SaaStr: The SaaS Metrics That Matter
• ProfitWell: Subscription Economics