Should Expansion Revenue Be Included or Excluded From LTV

In episode #333, Ben answers a foundational SaaS metrics question: Should expansion revenue be included in your Lifetime Value (LTV) calculation? Ben walks through the correct LTV formula and highlights how misalignment between LTV and CAC can distort your LTV:CAC ratio. He also covers when expansion should be included. The episode provides a practical framework for SaaS founders, CFOs, and operators to ensure they calculate LTV accurately, compare it properly to CAC, and model unit economics using consistent, reliable inputs. Key Topics Covered The correct LTV formula using average new-customer MRR × subscription gross margin Why the churn input should align with dollar-based metrics using 1 – Gross Revenue Retention (GRR) Why expansion revenue is deliberately excluded from LTV in most SaaS models How including expansion artificially inflates the LTV:CAC ratio The cost mismatch between acquiring new customers (CAC) and generating expansion revenue When PLG motions justify including limited, time-bound expansion revenue in LTV How organic upgrades differ from sales-assisted expansion How SaaS+ businesses must adjust their LTV formula to account for usage revenue The role of gross margin in determining true unit economics The importance of aligning metric definitions when evaluating customer profitability Why This Matters This episode is essential for: SaaS founders calculating LTV for budgeting, pricing, and forecasting CFOs, controllers, and FP&A leaders managing unit economics and CAC payback Finance teams modelling customer profitability and revenue expansion Operators working in PLG environments assessing organic expansion patterns Investors reviewing LTV:CAC ratios in diligence and portfolio monitoring Anyone building SaaS Plus (subscription + usage) revenue models Resources Mentioned Ben’s deep dive on SaaS+ LTV: https://www.thesaascfo.com/how-to-calculate-ltv-with-variable-revenue/ SaaS Metrics course: https://www.thesaasacademy.com/the-saas-metrics-foundation