SaaS Metrics Made Simple: The Plain English Guide to MRR, ARR & Payback

Building a software-as-a-service business is an exciting journey, but tracking company performance can quickly feel overwhelming when buried under endless financial acronyms.

Between MRR, ARR, LTV, CAC, Churn, and ARPU, founders often struggle to identify which metrics truly reflect long-term business health.

In this guide, we break down core subscription metrics in plain English and share real-world benchmarks to help you evaluate your SaaS growth.

The Fundamental Subscription Metrics

1. 1Monthly Recurring Revenue (MRR): Your predictable income generated every 30 days.
2. 2 MRR = Active Paid Subscribers x Average Revenue Per User (ARPU)

1. 2Annualized Run-Rate (ARR): Your annualized recurring revenue baseline assuming zero further growth or churn.
2. 2 ARR = Current MRR x 12

1. 3Customer Lifetime Value (LTV): The total gross profit an average account contributes over their customer lifespan before churning.
2. 2 LTV = (ARPU x Gross Margin %) / Monthly Logo Churn Rate %

The Gold Standard Metrics Benchmark

Top-performing B2B SaaS companies aim for the following health targets:

• LTV:CAC Ratio: 3:1 or higher (Your customer value should be at least triple acquisition costs).

• CAC Payback Window: 12 months or less (Fully recover marketing acquisition costs within one year).

• Gross Margin: 80%+ (High gross margins leave ample capital for R&D and sales expansion).

• Net Revenue Retention: 110%+ (Account expansion outpaces gross customer churn).

Audit Your SaaS Numbers Instantly

Calculate your exact subscription metrics with our free SaaS MRR Calculator and CAC Payback Calculator.