SaaS Cohort LTV: Beyond the Simple Formula
In early-stage SaaS planning, teams often rely on the basic customer lifetime value formula: \(LTV = \frac{ARPU}{\text{Churn Rate}}\). While simple, this formula assumes linear churn and infinite customer lifespans, which rarely reflect reality. Customer cohorts typically experience high initial churn followed by a flattening retention curve. To account for this, professional financial models employ cohort-specific retention curves and discount future revenues back to present value.
Using a cohort SaaS LTV calculator allows you to model real retention decay curves. This helps identify the true net present value (NPV) of your customer base and prevents overspending on customer acquisition. Understanding this metric alongside the CAC and LTV calculator and the customer churn and retention calculator is crucial for building a sustainable recurring revenue model.