Customer Lifetime Value
The predicted total revenue a customer will generate over their entire relationship with a business — the north star metric for sustainable growth.
Customer Lifetime Value (CLV or LTV) is the most important metric most marketing teams don't actually calculate. It's the difference between knowing "this customer is worth $50" and knowing "this customer is worth $2,400 over 3 years." That difference fundamentally changes every acquisition and retention decision.
Why CLV Changes Everything
When you know CLV, you can calculate acceptable Customer Acquisition Cost (CAC). If CLV is $2,400 and your target LTV:CAC ratio is 3:1, you can spend $800 to acquire a customer — far more than a $50 first-order profit would suggest. Teams without CLV data systematically under-invest in acquisition.
Calculating CLV
The simplest formula: CLV = Average Order Value × Purchase Frequency × Customer Lifespan. For SaaS: CLV = ARPU × Gross Margin × (1 / Churn Rate). For more sophisticated models, use cohort-based analysis that accounts for retention curves and revenue expansion.
CLV and CRO
CLV should influence which experiments you prioritize. A test that increases conversion rate by 5% but attracts lower-LTV customers might actually decrease revenue. Conversely, a test that slightly decreases conversion rate but attracts higher-intent, higher-LTV customers could be a major win.
Practical Application
If you can't calculate precise CLV, start with cohort analysis: track revenue from customers acquired in Month 1 over the following 12 months. This gives you a retention curve and a reasonable CLV estimate. Use it to set acquisition budgets and prioritize retention experiments.