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CAC payback shows how long it takes to recover customer acquisition cost from contribution margin.
Example one: CAC is $120 and monthly gross profit per customer is $40. CAC payback is 3 months.
Example two: CAC is $180 and monthly gross profit is $30. CAC payback is 6 months. The second campaign may still work if retention is strong, but it needs more cash and patience.
Payback is especially useful for subscriptions, repeat purchase businesses, and higher-ticket products where first-order profit does not tell the full story.
Use the Payback Period Calculator at /tools/payback-period-calculator, then compare with CAC at /tools/cac-calculator, LTV at /tools/ltv-calculator, and ROAS at /tools/roas-calculator.
CAC payback examples for paid marketing
Review CAC payback examples and see how margin and customer acquisition cost affect payback time.
Example one: CAC is $120 and monthly gross profit per customer is $40. CAC payback is 3 months.
Example two: CAC is $180 and monthly gross profit is $30. CAC payback is 6 months. The second campaign may still work if retention is strong, but it needs more cash and patience.
Payback is especially useful for subscriptions, repeat purchase businesses, and higher-ticket products where first-order profit does not tell the full story.
Use the Payback Period Calculator at /tools/payback-period-calculator, then compare with CAC at /tools/cac-calculator, LTV at /tools/ltv-calculator, and ROAS at /tools/roas-calculator.
CAC Payback
CAC
Paid Marketing
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Useful tools
Payback Period Calculator
Calculate customer acquisition payback period from CAC, monthly revenue per customer, and gross margin.
LTV Calculator
Calculate customer lifetime value from average order value, purchase frequency, customer lifespan, margin, and CAC.
CAC Calculator
Calculate customer acquisition cost from total sales and marketing spend and the number of new customers acquired.
MER Calculator
Calculate marketing efficiency ratio from total revenue and total marketing spend for blended paid marketing performance.
ROAS Calculator
Calculate return on ad spend from ad revenue and campaign spend, then see how much revenue each dollar of advertising produced.
AOV Calculator
Calculate average order value from total revenue and number of orders for ecommerce, ads, and store performance reporting.