What is customer lifetime value?
A first purchase rarely tells you what a customer is worth. Some buy once and leave. Others come back for years. CLV puts a number on the whole relationship, so marketing can judge acquisition by what customers are worth over time instead of by the first order.
It's the other half of every acquisition decision. Paying $80 for a customer is expensive if they're worth $60, and cheap if they're worth $400.
How do you calculate CLV?
A simple version: CLV = average order value × purchases per year × gross margin × expected years as a customer. A customer who spends $60 an order, four times a year, at a 50% margin, for three years, is worth $360 in profit.
| Approach | How it works | Best for |
|---|---|---|
| Historical | Adds up the actual profit from past customers, often by cohort | Understanding what customers have been worth |
| Simple formula | Multiplies averages for order value, frequency, margin, and lifespan | Quick planning numbers |
| Retention-based | Uses the share of customers kept each year, discounted to today's value | Subscriptions and contracts |
| Predictive | Models each customer's future purchases from their behavior so far, as in BG/NBD models | Businesses where customers can stop buying without telling you |
Cohort analysis is the usual starting point: group customers by when or where they were acquired, then track their profit month by month. The curves show how quickly value builds and when it flattens.
What is an example of customer lifetime value?
Two channels with the same cost per customer
A brand pays about $50 per new customer through both paid social and search. On cost per acquisition alone, the channels look equal.
A year later, its cohorts tell another story. Search customers have bought three times on average, and paid social customers once, mostly during a promotion. Search customers are worth roughly twice as much, so the same $50 buys more value there.
CLV vs. average order value vs. LTV:CAC
| Average order value | Customer lifetime value | LTV:CAC | |
|---|---|---|---|
| What it measures | Spend per order | Profit per customer over time | Value returned per acquisition dollar |
| Time frame | One order | The whole relationship | The whole relationship |
| Answers | How big is a basket? | What is a customer worth? | Does acquisition pay for itself? |
Why does customer lifetime value matter?
Optimizing to the first order rewards channels that find bargain hunters. CLV rewards channels that find customers who stay.
- Smarter bidding. Teams can pay more for the customers worth more.
- Fairer channel comparisons. Channels are judged on the customers they bring as well as the cost of bringing them.
- Better retention spend. Residual lifetime value, what an existing customer is still expected to be worth, shows where keeping a customer is worth paying for.
CLV is an estimate, and young cohorts haven't shown their full value yet. Treat early numbers as a forecast and update them as cohorts age.
How does Alli do this?
CLV needs media data and customer data in the same place. Alli Datasources integrates first-party systems such as Salesforce and Adobe, as well as proprietary data sets, alongside ad platforms, analytics, and commerce data, so teams can connect media activity to downstream outcomes.
Alli Semantic Layer then defines each metric once, from margin to what counts as a new customer, so a lifetime value calculated by marketing matches the one finance uses.
Explore Alli DatasourcesCustomer lifetime value (CLV) FAQ
What is the difference between CLV and LTV?
They usually mean the same thing. CLV, CLTV, and LTV all describe the value a customer brings over the whole relationship. Check whether a given number is based on revenue or profit.
How do you calculate customer lifetime value?
A simple version multiplies average order value, purchases per year, gross margin, and expected years as a customer. More precise versions use cohort data or predictive models.
What is predictive CLV?
It's an estimate of what each current customer will be worth, based on their behavior so far, such as how recently and how often they've bought.
How can marketing increase customer lifetime value?
By acquiring customers who stay, improving retention, and encouraging repeat purchases. Acquisition choices matter most, because some channels bring customers who rarely come back.
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