Customer lifetime value formula explained

A meal kit company spent aggressively on paid social, celebrating low cost per first order. Unit economics review told a different story. Average customers ordered only twice before churning. Lifetime value barely exceeded acquisition cost. Scaling spend would have scaled losses.

CLV shifts focus from first transaction to total relationship value. Marketing decisions improve when you know what a customer is worth over time, not just what they paid today.

What customer lifetime value measures

Customer lifetime value (CLV or LTV) is the predicted or historical total value a customer contributes before they stop buying. Value can be measured as revenue or, more accurately for decisions, as gross profit after product and service delivery costs.

CLV connects marketing to finance. It sets ceilings for customer acquisition cost, justifies retention investment, and helps compare customer segments by long-term worth rather than first purchase size.

Simple customer lifetime value formula

The most common simplified formula multiplies three inputs:

Average purchase value × purchase frequency per period × average customer lifespan in periods = customer lifetime value.

Example: average order is fifty euros, customers order six times per year, and average relationship lasts three years. CLV = 50 × 6 × 3 = 900 euros revenue before adjusting for margin and discounting.

For subscription businesses, an alternate form is average revenue per account per month divided by monthly churn rate. If ARPU is thirty euros and monthly churn is five percent, CLV approximates 600 euros using the simple survival model.

The analytics book expands methods in customer lifetime value, including cohort-based and discounted approaches for higher accuracy.

Inputs you need to calculate CLV

Average purchase value

Total revenue divided by number of orders over a defined period. Use gross margin per order when evaluating profit-based CLV.

Purchase frequency

Orders per customer per year for transactional models, or active months for subscriptions. Segment by channel or product line when behavior differs.

Customer lifespan

Average time between first and last purchase, or inverse of churn rate for subscriptions. Longer relationships dramatically increase CLV.

Using CLV in marketing decisions

Compare CLV to CAC for a healthy ratio. Many businesses target CLV at three times CAC or higher, though margins and payback period requirements vary.

Allocate budget toward segments and channels that produce high-CLV customers, not just cheap first orders. Retention programs that extend lifespan often return more than equivalent acquisition spend.

Model scenarios when pricing, product mix, or support quality changes. Small improvements in retention multiply CLV across the customer base.

Segment CLV by acquisition source when data allows. Customers from referrals often stay longer than those from broad discount campaigns. Channel-level CLV reveals where to increase spend and where first-order volume masks weak long-term economics.

Discounted CLV accounts for the time value of money in longer relationships. Advanced finance teams apply a discount rate to future revenue. Simpler models skip discounting but should still use gross margin when comparing acquisition investments to expected return.

WEMASY helps you track acquisition source and on-site behavior so CLV analysis can segment customers by how they first found you.

Next: what is customer acquisition cost, the partner metric to CLV.

Update CLV inputs after major business changes. New pricing, a product launch, or a shift from one-time sales to subscriptions can invalidate prior averages within a quarter. Stale CLV figures mislead budget decisions as badly as stale traffic reports.

Share CLV insights with teams beyond marketing. Product, support, and pricing decisions all improve when everyone understands which customer segments generate the most long-term value.

Segment CLV by acquisition source and product line. Blended averages hide channels that bring high-value loyal buyers and others that fill the funnel with one-time discount hunters.

Frequently asked questions