Customer Lifetime Value Calculator

About the Customer Lifetime Value Calculator

A customer is worth more than their first order. Someone who buys four times a year for three years brings in far more profit than a single sale suggests, and knowing that figure changes how a business thinks about marketing, service and retention. Customer lifetime value — CLV, or LTV — is the total gross profit a typical customer generates over the whole time they keep buying.

This customer lifetime value calculator works it out from the average order value, the number of orders per year, the gross margin and the customer lifespan. Enter the customer acquisition cost as well, and it gives the LTV to CAC ratio — how many times over a customer repays what it cost to win them — and the payback period, the number of months before that cost is earned back.

How to Use the Customer Lifetime Value Calculator

Enter the average order value: total revenue divided by the number of orders.

Enter the number of orders per year a typical customer places.

Enter your gross margin percentage.

Enter the customer lifespan: how many years a typical customer keeps buying.

Optionally, enter the customer acquisition cost: total marketing and sales spending divided by the number of new customers it brought in.

How Customer Lifetime Value Is Calculated

  yearly revenue      =  average order value × orders per year
  yearly gross profit =  yearly revenue × gross margin
  lifetime value      =  yearly gross profit × years
  LTV : CAC           =  lifetime value ÷ acquisition cost
  payback (months)    =  acquisition cost ÷ (yearly gross profit ÷ 12)

Step-by-Step Example

An average order of 60, four orders a year, a 40% gross margin, a three-year lifespan and an acquisition cost of 90.

  Yearly revenue:       60 × 4              =  240
  Yearly gross profit:  240 × 40%           =  96
  Lifetime value:       96 × 3              =  288
  LTV : CAC:            288 ÷ 90            =  3.2 : 1
  Payback:              90 ÷ (96 ÷ 12)      =  11.3 months

Each customer brings in 720 of revenue over three years, but it is the 288 of gross profit that pays for winning them and contributes to the business.

Why Gross Profit, Not Revenue

Revenue overstates what a customer is worth, because the cost of every product sold has to be paid out of it. A customer who spends 720 with a business whose products cost 60% of their price has only generated 288 to cover marketing, overheads and profit. Using revenue instead would suggest the business could afford to spend two and a half times as much to acquire each customer — a mistake that has sunk many fast-growing companies.

The LTV to CAC Ratio

A very high ratio is not always good news: it can mean the business could grow faster by spending more on marketing while staying profitable.

Estimating Customer Lifespan

Lifespan is the hardest input to know, especially for a young business. If you track how many customers stop buying each year, a rough estimate is one divided by that annual churn rate: losing 30% of customers a year suggests an average lifespan of about 3.3 years. For a new business, start with a cautious figure and update it as real repeat-purchase data builds up. Overestimating lifespan is the most common way CLV is inflated.

Raising Lifetime Value

Keep customers longer. Good service, reliable delivery and regular contact reduce churn, and small gains in retention compound over the lifetime.

Encourage repeat purchases with reminders, subscriptions and loyalty rewards.

Increase order value through bundles, add-ons and sensible upgrades.

Protect margin. Frequent discounting raises orders but can lower lifetime gross profit.

Lifetime Value by Channel and Segment

An average lifetime value for the whole customer base is useful, but the real insight often comes from splitting it. Customers who arrive through different marketing channels, buy different products or live in different regions can have very different order values, purchase frequencies and lifespans.

Working out lifetime value for each group, alongside the acquisition cost of the channel that brought them in, shows where marketing money works hardest. A channel with a higher cost per new customer can still be the best one if the customers it brings stay longer and spend more.

Discounting Future Profit

The simple formula here treats profit in year three the same as profit today. Finance teams sometimes discount future years, to reflect the time value of money and the uncertainty of long forecasts. For short lifespans the difference is small; for customers expected to stay many years, discounting gives a more cautious and realistic figure.

A Quick Check

If the lifetime value looks surprisingly high, check each input against real records before relying on it.

Understanding Your Result

Lifetime value is the gross profit a typical customer generates over their lifespan.

Lifetime revenue shows the revenue behind it.

Yearly gross profit is the profit per customer per year.

LTV:CAC compares lifetime value with acquisition cost, if entered.

CAC payback is how many months it takes to earn back the acquisition cost.

Worth knowing reminds you to use real data where possible.

When Should You Use This Calculator?

Setting a marketing budget per new customer.

Comparing marketing channels with different acquisition costs.

Deciding how much to invest in retention and service.

Preparing a business plan or investor pitch.

Pricing subscriptions and loyalty offers.

Common Mistakes

Using revenue instead of gross profit.

Overestimating how long customers stay.

Ignoring acquisition cost.

Averaging very different customer groups together.

Treating the figure as certain rather than an estimate to refine.