How do you calculate Customer Lifetime Value?

The simplest CLV formula is: Average Revenue Per Account (ARPA) x Gross Margin % x Average Customer Lifespan (in months or years). A more nuanced approach uses: (ARPA x Gross Margin) / Monthly Churn Rate. For example, with $1,000 ARPA, 80% margin, and 2% monthly churn: ($1,000 x 0.80) / 0.02 = $40,000 CLV.

What is a good CLV to CAC ratio?

A healthy CLV:CAC ratio is 3:1 or higher, meaning the lifetime value of a customer should be at least three times the cost to acquire them. Ratios below 1:1 mean you are losing money on every customer. Ratios above 5:1 may indicate you are under-investing in growth.

Glossary

What is Customer Lifetime Value (CLV)?

A complete guide to understanding customer lifetime value (clv) and why it matters for customer success teams.

Definition

“Customer Lifetime Value (CLV) is the total revenue a business can expect from a single customer account throughout their entire relationship. It is typically calculated as average revenue per account multiplied by average customer lifespan, minus the cost of serving that customer.”
— AmplifyCS Glossary

Why It Matters

CLV provides the foundation for virtually every growth decision — from how much to spend on acquisition (CAC) to how much to invest in customer success. When CLV rises, the economics of every customer interaction improve. Companies that optimize for CLV rather than short-term revenue build more durable, profitable businesses.

How AmplifyCS Helps

AmplifyCS helps increase CLV by reducing churn (extending customer lifespan) and identifying expansion opportunities (increasing average revenue). Health-driven segmentation ensures your highest-CLV accounts always receive the attention they deserve.

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Related Terms

Annual Recurring Revenue (ARR)

Annual Recurring Revenue (ARR) is the annualized value of all active subscription contracts. It represents the predictable, recurring revenue a company expects to earn over the next 12 months, excluding one-time fees, professional services, and variable usage charges.

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Expansion Revenue

Expansion revenue is the additional recurring revenue generated from existing customers through upsells (higher-tier plans), cross-sells (additional products), and increased usage or seat count. It is the primary driver of net revenue retention above 100%.

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Churn Rate

Churn rate is the percentage of customers or revenue lost during a specific time period. Customer churn (logo churn) counts the number of customers lost, while revenue churn measures the dollar value of lost recurring revenue.

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Customer Segmentation

Customer segmentation is the practice of dividing a customer base into distinct groups based on shared characteristics such as ARR tier, industry, lifecycle stage, health score, product usage patterns, or strategic value. Segmentation enables differentiated service models and resource allocation.

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Frequently Asked Questions About Customer Lifetime Value (CLV)

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