SaaS LTV:CAC Ratio Calculator — Unit Economics & Payback Period
Calculate customer lifetime value (LTV), customer acquisition cost (CAC), LTV:CAC ratio, payback period, and the SaaS Magic Number.
SaaS LTV:CAC
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Customer Acquisition Cost (CAC)
▼ $250.00
CAC Payback Period
▲ 6.3 months
Avg. Customer Lifetime
20.0 months
Average Revenue Per User
$50.00
Monthly Churn Rate
5.0%
SaaS Magic Number
▼ 0.20x
Gross Margin
80%
Total Revenue from Cohort
▲ $200,000.00
Scenario Comparison
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CAC Payback Timeline
SaaS Magic Number: 0.20x — Needs improvement: each marketing dollar generates less than $0.50 in revenue. Review channel mix.
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