LTV (Lifetime Value)
Definition & meaning
Definition
LTV (Lifetime Value), also called CLV (Customer Lifetime Value), is the total revenue a business expects to earn from a single customer over the entire duration of their relationship. LTV is calculated as: Average Revenue Per User (ARPU) × Average Customer Lifespan. For subscription businesses, this simplifies to: ARPU ÷ Monthly Churn Rate. For example, if a SaaS product charges $20/month and has 5% monthly churn, the LTV is $20 ÷ 0.05 = $400. LTV is always analyzed alongside CAC (Customer Acquisition Cost) — the LTV:CAC ratio indicates business health. A ratio of 3:1 or higher is considered healthy (each customer generates 3x more revenue than the cost to acquire them). LTV drives pricing strategy, marketing budget allocation, and investment decisions. SaaS companies with high LTV can afford higher acquisition costs and longer payback periods.
How It Works
LTV (Lifetime Value) estimates the total revenue a business can expect from a single customer account over the entire duration of their relationship. The simplest formula is LTV = ARPU (Average Revenue Per User) divided by churn rate. For example, if your average customer pays $100/month and your monthly churn rate is 5%, LTV = $100 / 0.05 = $2,000. More sophisticated models account for expansion revenue, gross margins, and discount rates to calculate a present-value-adjusted LTV. Cohort-based LTV analysis tracks actual revenue from groups of customers over time rather than relying on formulas, providing more accurate results for businesses with variable retention curves. LTV is almost always analyzed alongside CAC (Customer Acquisition Cost) — the LTV:CAC ratio reveals whether your unit economics are sustainable. A ratio of 3:1 or higher is generally considered healthy for SaaS businesses.
Why It Matters
LTV determines how much you can afford to spend acquiring a customer while remaining profitable. If you do not know your LTV, you cannot rationally set marketing budgets, evaluate channel efficiency, or price your product correctly. For technical decision-makers, LTV influences architecture decisions — investing in features that increase retention and expansion directly increases LTV, often more effectively than acquisition-focused features. A high LTV justifies longer payback periods and heavier upfront investment in customer success. Companies with high LTV can outspend competitors on acquisition and still maintain healthy margins. Conversely, low LTV forces you into a volume game where you need massive scale to survive.
Real-World Examples
Amazon Prime members have an estimated LTV several times higher than non-Prime customers, which is why Amazon invests so heavily in the program. Salesforce built its dominance partly by maximizing LTV through deep integrations that make switching costly and continuous upselling of additional clouds. In the tools we review at ThePlanetTools.ai, platforms like HubSpot and Ahrefs design their products to increase LTV through feature expansion — once you depend on their data and workflows, switching costs are significant. Stripe's LTV grows naturally as customers' payment volume scales. ProfitWell (now Paddle) and Baremetrics provide LTV analytics dashboards that connect directly to billing systems for real-time LTV tracking across customer segments.
Related Terms
CAC (Customer Acquisition Cost)
BusinessTotal cost to acquire one new paying customer.
MRR / ARR
BusinessMonthly/Annual Recurring Revenue — the core financial metric for subscriptions.
Churn Rate
BusinessPercentage of customers who cancel their subscription in a given period.
SaaS
BusinessCloud software accessed via subscription instead of local installation.