// multi-utility computation suite · offline · instant · precise
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finance.business-cac-payback Calculator
Calculates CAC payback period in a business finance context from customer acquisition cost and monthly gross profit per customer. CAC payback below 12 months is excellent — at 24 months, the business is funding growth from the balance sheet for two years before recovering acquisition costs.
Inputs
Cac
Reference formula or conversion factor shown for context.
Arpu
Total income generated before any costs are deducted. Profitability depends on how much survives after expenses.
Gross Margin
Profit as a percentage of revenue. Margin % is always lower than markup % — a $5 profit on a $15 selling price is 33% margin but 50% markup.
Results
payback period
Time to recover the initial investment from cumulative cash flows. Most firms target 2–5 years. Does not account for the time value of money — use discounted payback for rigour.
LTV (24mo)
LTV (customer lifetime value) -- total revenue expected from a customer over their entire relationship. Compare to CAC for unit economics.
LTV:CAC ratio
The proportional relationship between two quantities.