Unit Economics Calculator
Is each customer actually profitable? Enter your revenue per account, gross margin, churn and CAC to get LTV, the LTV:CAC ratio and how many months until a customer pays back their acquisition cost.
Per customer
What good unit economics look like
LTV = monthly gross profit per customer ÷ churn (ARPA × gross margin ÷ churn). The two rules of thumb investors use: an LTV:CAC of 3× or higher, and a CAC payback under ~12 months. Below 3× you're spending too much to acquire relative to what a customer is worth; a long payback ties up cash and lengthens your runway. The curve shows cumulative gross profit from one customer — it starts at minus your CAC and crosses zero at the payback month.
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