Annual Recurring Revenue (ARR) and Monthly Recurring Revenue (MRR) are the two most fundamental metrics for any SaaS business. They're not just vanity metrics — they're the inputs to every other business calculation: valuation multiples, growth rates, payback periods, and efficiency ratios. Getting them right matters.
ARR vs MRR: The Core Definitions
MRR (Monthly Recurring Revenue) is the predictable, normalized revenue you earn from subscriptions every month. The key word is normalized — a customer who pays ₹60,000 annually contributes ₹5,000/month to MRR, not ₹60,000 in January and zero for the rest of the year.
ARR (Annual Recurring Revenue) = MRR × 12. Simple. ARR is used as the primary SaaS valuation benchmark: early-stage SaaS companies trade at 5–15× ARR, growth-stage at 10–30× ARR, and exceptional companies (Snowflake, Figma in their early days) commanded 40–60× ARR at their peaks.
MRR Decomposition: The Four Components
New MRR: Revenue from customers who didn't exist last month. This is your acquisition engine.
Expansion MRR: Additional revenue from existing customers (upsells, seat expansion, add-ons). This is your monetization engine and the healthiest form of growth.
Contraction MRR: Revenue lost from customers who downgraded.
Churned MRR: Revenue lost from customers who cancelled entirely.
Net New MRR = New + Expansion − Contraction − Churned. This is the number that drives ARR growth. If your net new MRR is positive but small relative to your gross new MRR, you have a retention problem that will eventually cap your growth.
SaaS Quick Ratio: Growth Quality Score
The Quick Ratio = (New MRR + Expansion MRR) ÷ (Churned MRR + Contraction MRR). It measures the quality and sustainability of your growth.
Benchmarks: Quick Ratio > 4 is exceptional (you're growing much faster than you're losing). QR 2–4 is healthy growth. QR 1–2 is surviving but not thriving. QR < 1 means you're shrinking. For enterprise SaaS, QR > 2 is typically the bar for Series A. For consumer SaaS with inherently higher churn, investors look at absolute growth rate instead.
Net Revenue Retention: The Retention Flywheel
Net Revenue Retention (NRR) = (Beginning MRR + Expansion − Contraction − Churn) ÷ Beginning MRR × 100. Companies with NRR > 120% grow ARR from existing customers alone — new customer acquisition is pure acceleration.
The best SaaS companies have NRR > 130%: Snowflake (168%), Twilio (155%), and Datadog (130%) at their peaks. This means they could stop acquiring new customers entirely and still grow 30%+ annually. For early-stage companies, getting NRR above 100% is the most important milestone before scaling sales.
ARR and MRR aren't just accounting entries — they're the score of your business. Understanding their components (new, expansion, churn) tells you exactly where your business is healthy and where it needs work. Use the calculator to decompose your current revenue, calculate your Quick Ratio, and identify whether your growth is sustainable.
ARR / MRR Calculator — free, instant, no signup
100% client-side. Your data never leaves your browser.
Calculate ARR / MRR Free →