Customer Lifetime Value (LTV)

Customer Lifetime Value (LTV, also written as CLV or CLTV) is a prediction of the total net revenue a business will generate from a customer over the entire course of the relationship. It is calculated by multiplying average purchase value × purchase frequency × average customer lifespan. If a gym member pays $80/month and stays for 24 months on average, their LTV is $1,920.

Why It Changes Everything

LTV reframes how you think about acquisition costs. If your LTV is $1,920 and your customer acquisition cost (CAC) is $300, you have a healthy ratio. If your LTV is $400 and your CAC is $300, you are barely profitable and one retention problem away from losing money. Understanding LTV lets you make rational decisions about how much to spend acquiring customers, which channels are worth investing in, and how aggressively to discount for new member offers.

The Two Levers

There are exactly two ways to increase LTV: increase how much customers spend per period (ARPU), or increase how long they stay (retention). Most businesses focus on the first — upsells, add-ons, price increases — while underinvesting in retention. But retention improvements compound more powerfully. A customer who stays 36 months instead of 24 generates 50% more lifetime value with zero additional acquisition cost.

Predicting LTV

Historical LTV looks backward; predictive LTV looks forward. Using behavioral signals — engagement frequency, product usage depth, response to campaigns — businesses can estimate which current customers are on track for high LTV and which are at risk of early churn. This enables proactive intervention: investing more in at-risk customers before they leave rather than trying to win them back after.