CalcHub

SaaS MRR Calculator — Calculate Monthly Recurring Revenue [2026]

Enter your subscription plans and customer counts, get MRR, ARR, net MRR growth, LTV, and CAC payback period. Built for SaaS founders. Free online tool.

Subscription Plans

SaaS Metrics

MRR
$14,650
ARR
$175,800
Total Customers
250
ARPU (monthly)
$59
Churned MRR
-$440
~8 customers
Net New MRR
+$1561
+10.7% growth
Net Revenue Retention
111%
Healthy
Expansion Revenue
+$2,000
Customer LTV
$1953
LTV : CAC Ratio
3.9x
Healthy (3x+)
CAC Payback
8.5 mo
Under 12 months

Revenue by Plan

Basic
$4,350 (30%)
Pro
$6,320 (43%)
Enterprise
$3,980 (27%)
Metrics are calculated based on the inputs provided. LTV assumes constant ARPU and churn rate. This is a simplified model — actual SaaS metrics should account for cohort analysis, seasonal variations, and different churn behaviors.

What is SaaS MRR Calculator?

The SaaS MRR Calculator helps SaaS founders, product managers, and investors calculate and analyze Monthly Recurring Revenue and related SaaS metrics. MRR is the most important metric for subscription businesses — it represents predictable monthly income. This calculator goes beyond basic MRR to show ARR, net revenue retention, LTV, and CAC payback to give you a complete picture of your SaaS business health.

How to Use SaaS MRR Calculator

Add your subscription plans by entering the plan name, price per month, and number of active customers. Optionally enter your monthly churn rate, expansion revenue (upgrades/add-ons), and customer acquisition cost (CAC). The calculator shows your MRR, ARR, net MRR growth, customer lifetime value (LTV), and CAC payback period.

How SaaS MRR Calculator Works

MRR is calculated by summing (plan price x number of customers) for all plans. ARR is MRR x 12. Churned MRR is total MRR x churn rate. Net new MRR is expansion revenue minus churned MRR. Customer LTV is calculated as average revenue per customer divided by churn rate. CAC payback period is CAC divided by average revenue per customer per month. All calculations happen instantly in your browser.

Common Use Cases

  • Tracking MRR growth and ARR for investor reporting
  • Modeling the impact of churn reduction on revenue
  • Calculating customer lifetime value for marketing budget decisions
  • Estimating CAC payback period to evaluate acquisition channel efficiency
  • Forecasting revenue growth under different pricing and churn scenarios

Frequently Asked Questions

What is MRR in SaaS?▼

Monthly Recurring Revenue (MRR) is the predictable monthly revenue from all active subscriptions. It is calculated by summing the monthly value of all customer subscriptions. MRR is the most fundamental metric for measuring SaaS business growth.

What is a good MRR growth rate?▼

For early-stage SaaS companies, a healthy MRR growth rate is 10-20% month-over-month. As companies scale, growth rates typically slow to 5-10% monthly. A 15% monthly growth rate means roughly tripling revenue every 8 months.

What is a good churn rate for SaaS?▼

For B2B SaaS, a monthly churn rate of 2-3% (20-30% annually) is average, while best-in-class companies achieve under 1% monthly churn. For B2C SaaS, 5-7% monthly churn is common. Negative net revenue churn (expansion revenue exceeds churned revenue) is the gold standard.

How do I calculate ARR from MRR?▼

Annual Recurring Revenue (ARR) is simply MRR multiplied by 12. For example, if your MRR is $50,000, your ARR is $600,000. ARR is commonly used for businesses with annual contracts or for reporting to investors.

What is a good LTV to CAC ratio?▼

A healthy LTV:CAC ratio is 3:1 or higher, meaning you earn 3x what you spend to acquire each customer. Below 1:1 means you are losing money on each customer. The CAC payback period should ideally be under 12 months.

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