SaaS Metrics Calculator
Calculate MRR, ARR, LTV, CAC, churn rate, quick ratio, and more. Track your SaaS business health with industry benchmarks.
Monthly Revenue
Customer Data
Unit Economics
Ending MRR
$58,000
+16.00% growth
ARR
$696,000
MRR Movement
Health Metrics
LTV:CAC
10.0x
Target: >3x
CAC Payback
2.5 mo
Target: <12 mo
Quick Ratio
3.7
Target: >4
NRR
100.0%
Target: >100%
SaaS Benchmarks by Stage
| Metric | Early Stage | Growth | Scale |
|---|---|---|---|
| LTV:CAC Ratio | >2x | >3x | >4x |
| CAC Payback | <18 mo | <12 mo | <9 mo |
| Net Revenue Retention | >90% | >100% | >110% |
| Gross Revenue Churn | <5% | <3% | <2% |
| Quick Ratio | >2 | >3 | >4 |
Metric Definitions
MRR
Monthly Recurring Revenue from active subscriptions
ARR
Annual Recurring Revenue (MRR × 12)
LTV
Customer Lifetime Value based on ARPU, lifespan, and margin
CAC
Customer Acquisition Cost including sales & marketing
NRR
Net Revenue Retention from existing customers
Quick Ratio
Growth efficiency: (New + Expansion) / (Churn + Contraction)
Frequently Asked Questions
What is MRR and how is it calculated?
MRR (Monthly Recurring Revenue) is the predictable revenue your business earns each month from subscriptions. It's calculated by adding your starting MRR, new MRR, and expansion MRR, then subtracting churned MRR and contraction MRR.
What is a good LTV:CAC ratio?
A healthy LTV:CAC ratio is 3:1 or higher, meaning the lifetime value of a customer is at least 3 times the cost to acquire them. Ratios below 1:1 indicate unsustainable unit economics.
What is the SaaS Quick Ratio?
The Quick Ratio measures growth efficiency by comparing new revenue (New MRR + Expansion MRR) to lost revenue (Churned MRR + Contraction MRR). A ratio above 4 indicates very healthy, efficient growth.
How do I calculate Customer Lifetime Value (LTV)?
LTV = ARPU × Average Customer Lifespan × Gross Margin. The average customer lifespan is calculated as 1 divided by the monthly churn rate. This represents the total revenue you can expect from a customer over their entire relationship with your business.
What is Net Revenue Retention (NRR)?
NRR measures how much revenue you retain from existing customers, including expansions and churn. An NRR above 100% means your existing customers are growing faster than you're losing them—a sign of strong product-market fit.
What's a healthy CAC payback period?
For most SaaS businesses, a CAC payback period under 12 months is considered healthy. Enterprise SaaS may accept 18-24 months due to larger deal sizes, while SMB-focused SaaS should aim for under 6 months.
What is the Magic Number in SaaS?
The Magic Number measures sales efficiency: Net New ARR divided by Sales & Marketing spend. A Magic Number above 0.75 indicates it's time to invest more in growth; below 0.5 suggests improving efficiency first.
How do I reduce customer churn?
Reduce churn by improving onboarding, proactively monitoring customer health scores, providing excellent support, regularly delivering value through product updates, and addressing issues before customers cancel.
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