Customer Lifetime Value: A Simple Way to Estimate It

Customer lifetime value (CLV or LTV) estimates how much a customer is worth to your store over the whole relationship, not just their first order. It tells you how much you can afford to spend to win a customer.

The simple formula

A store with a $60 average order, customers buying 3 times a year and staying about 2 years: 60 × 3 × 2 = $360 of revenue per customer.

Use profit, not revenue

Revenue isn't what you keep. Multiply by your gross margin to see what each customer contributes after product costs:

At a 40% margin, $360 of revenue is worth $144.

Estimating customer lifespan

If you know the share of customers who stop buying each year (churn), a rough lifespan is 1 ÷ churn rate. A 50% yearly churn suggests an average lifespan of about 2 years. Subscription businesses often calculate this monthly.

CLV vs. CAC

Compare profit CLV with your customer acquisition cost (CAC), the marketing and sales spend needed to win one customer. A ratio of around 3:1 is often quoted as a healthy target, but the right number depends on your cash flow and how quickly you earn back the acquisition cost. In the example, a CAC of $48 gives a 3:1 ratio.

Ways to raise CLV

• Increase average order value with bundles or free-shipping thresholds.
• Encourage repeat purchases with reminders, subscriptions or loyalty rewards.
• Reduce churn with good service and easy returns.
• Protect your margin: discounts raise sales but lower profit per order.

Keep it honest

Early on you won't have years of data. Use cautious assumptions and update the estimate as real repeat-purchase data comes in. Working out CLV separately for customers from different channels often shows which channels bring in the most valuable buyers.