Customer Lifetime Value (LTV)

Customer lifetime value is what a customer is worth to you in total, across every purchase they will ever make.

What Customer Lifetime Value Means in Marketing

LTV exists to stop you making a specific, expensive mistake: judging a customer by their first order.

Someone buys once for 1,200. On a first-purchase basis, the 1,500 you spent acquiring them was a loss and the campaign gets cut. But if that customer buys four times a year for three years, they were worth 14,400 and you just switched off your best channel.

That’s the whole argument. LTV reframes acquisition spend as an investment with a payback period rather than a cost that has to clear the same month.

It’s also the most abused number in marketing. Because it involves predicting the future, it can be stretched to justify almost any CAC. A generous retention assumption and a long enough time horizon can make catastrophic unit economics look healthy. Treat anyone’s LTV figure as a claim, not a fact, until you know how they built it.

How Customer Lifetime Value Works

The workable version most teams use:

LTV = Average order value × Purchase frequency × Customer lifespan × Gross margin

An average order of 2,000, bought three times a year, for two years, at 45% margin gives you 5,400.

That margin multiplier is the part people drop, and dropping it inflates LTV by more than double in most retail businesses.

For subscriptions the shape is different:

LTV = (Monthly revenue × Gross margin) ÷ Monthly churn rate

500 a month at 80% margin with 4% monthly churn gives you 10,000. Churn sits in the denominator, which is why halving churn does more for LTV than any acquisition campaign you could run.

Customer Lifetime Value Example

Subscription box businesses live or die on this. First-order economics are usually negative, sometimes deliberately so, because the model assumes months of repeat revenue.

When those companies fail, it is rarely because acquisition stopped working. It is because churn came in higher than the LTV model assumed, so the payback period stretched past the point the cash could cover.

Why Customer Lifetime Value Matters for Marketers

LTV is the argument that buys you patience. It turns “this campaign lost money in October” into “this campaign breaks even in month five and profits after,” which is a conversation you can actually win.

It also redirects effort. Once you see churn sitting in the denominator, retention stops being someone else’s job. An email flow that keeps customers one month longer can be worth more than a new acquisition channel.