Customer Acquisition Cost (CAC) Calculator

Calculate customer acquisition cost, lifetime value (LTV), and the critical LTV:CAC ratio. Essential for SaaS and subscription businesses.

Marketing Spend

Sales Spend

Customers Acquired

Avg Annual Revenue/Customer

Monthly Churn Rate

Tab to move between fields

CAC

$400.00

Customer Lifetime Value$10,000.00

LTV:CAC Ratio25x

Payback Period9.6 months

Monthly Revenue/Customer$41.67

How to Use This Calculator

Enter total marketing spend and sales spend for the period.
Set number of customers acquired, average annual revenue per customer, and monthly churn rate.
Review CAC, Customer Lifetime Value (LTV), LTV:CAC Ratio, and Payback Period (months).
An LTV:CAC ratio above 3× indicates a healthy, scalable acquisition channel.

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