Why does payback matter?
Shorter CAC payback means cash comes back faster, which is especially important for bootstrapped and early-stage companies.
CAC payback calculator
Calculate how long it takes to recover acquisition cost.
Estimate CAC, gross profit per customer, payback months, and first-year contribution after acquisition cost.
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Should onboarding be included?
If onboarding is required to activate customers, include it. Otherwise CAC can look better than it really is.