What is LTV (Customer Lifetime Value)?

LTV (customer lifetime value) is the total profit or revenue a customer generates over their entire relationship with your brand, not just their first order. It defines the true ceiling on what you can afford to spend acquiring them.

Formula: LTV = Average Order Value x Purchase Frequency x Customer Lifespan (revenue basis; use margin for profit LTV)

The mechanics

Brands that only compare CPA to first-order value systematically underspend if customers reorder, and overspend if they never return. LTV reframes acquisition: a consumable or subscription product can profitably pay more per customer than a one-and-done purchase. The catch is that LTV is a projection built from cohort behavior, so it should be measured per acquisition channel and cohort rather than as one blended brand-wide number.

Signals that matter

• Good: LTV a healthy multiple of acquisition cost, with cohorts reordering on schedule
• Bad: LTV barely above first-order value — you are running a one-purchase business on repeat-purchase math
• Bad: newer cohorts showing weaker repeat rates than older ones — acquisition quality is slipping

Putting it to work

LTV rewards creative that attracts the right customer, not just the cheapest one, so test angles aimed at your best-retaining segments and use cases. Generating those segment-specific ad variations inside Claude with Polaris lets you probe several buyer profiles without a production budget. See the full ecommerce ads glossary, or put it into practice with the Polaris AI UGC ad generator.