LTV:CAC Ratio
CAC Payback
Net Revenue Retention
Monthly Churn
SaaS Quick Ratio
Gross Margin
MRR予測（12ヶ月）
月次MRRウォーターフォール
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What is a good LTV:CAC ratio for SaaS?
The gold standard is 3:1 or higher, meaning each customer generates 3x the cost to acquire them. Below 1:1 means you lose money on every customer. Between 1-3x, you are likely not investing enough in growth or your unit economics need work.
How do I calculate Net Revenue Retention (NRR)?
NRR measures revenue from existing customers over time, accounting for churn, downgrades, and expansion. NRR = (Starting MRR - Churn - Contraction + Expansion) / Starting MRR. Top SaaS companies achieve 120-140% NRR, meaning they grow even without new customers.
What is the SaaS Quick Ratio?
Quick Ratio = (New MRR + Expansion MRR) / (Churned MRR + Contraction MRR). It measures growth efficiency. A ratio of 4x or higher indicates healthy, sustainable growth. Below 2x suggests the company has a leaky bucket problem.
What CAC payback period should I target?
For SaaS in 2026, aim for under 12 months CAC payback. This means you recover the cost of acquiring a customer within one year. Payback periods over 18 months put significant strain on cash flow and require more capital to grow.