Built on public-company filings + verified founder submissions

CAC Payback Calculator

How many months until a customer's gross profit repays your acquisition cost?

CAC ($) ?

Monthly ARPU ($) ?

Gross margin (%) ?

CAC Payback Period — Enter values to compute

Formula: CAC / (Monthly ARPU × Gross Margin)

Benchmarks

CAC payback (months, lower is better)

Top 10% (p90)

6 mo

Top quartile (p75)

12 mo

Median (p50)

18 mo

Bottom quartile (p25)

24 mo

LTV:CAC Ratio — Compute the LTV-to-CAC ratio. The single most-cited SaaS unit-economics test.
LTV — Estimate customer lifetime value from ARPU, gross margin, and churn.
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