How to Calculate Customer Lifetime Value Fast

TL;DR

Calculate customer lifetime value using total lifetime revenue per customer, average monthly price divided by churn, or stable monthly revenue divided by new monthly sales. These rough calculations reveal how much each customer is worth, help project a recurring business's revenue ceiling, and show whether increasing customer value could create more room for acquisition spending and growth.

Transcript

So I was talking to an entrepreneur who had applied through acquisition.com to potentially become a portfolio company, and one of the questions that I asked him on the call was, "So what's your LTV? Like, how much, you know, how much you make per customer over the lifetime?" And he honestly was like, "I don't know what, what it is. I, I know I shou... Read More

Key Insights

• Customer lifetime value is an estimate of how much revenue a business makes from one customer across the relationship, and knowing it supports better decisions about growth, customer acquisition, pricing, churn, and the revenue level a recurring business can sustain.
• The lifetime revenue method calculates LTV by dividing total revenue earned since the business began by the total number of customers sold. Six million dollars in revenue across 600 customers produces an estimated LTV of $10,000.
• The lifetime revenue method can underestimate LTV because it only measures revenue collected through the present. Customers who remain active may continue paying, so their future revenue is excluded even though it belongs to the full economic value of those relationships.
• Customer churn is the percentage of customers present at the beginning of a month who leave before its end. If 100 customers begin the month and 95 of those same customers remain, five customers left, producing 5 percent churn.
• The churn-based LTV formula is average monthly revenue per customer divided by churn. A business earning $100,000 monthly from 100 customers averages $1,000 per customer, and dividing $1,000 by 5 percent produces an estimated LTV of $20,000.
• Recent average churn is more useful than one isolated month because churn can move from 5 percent to 20 percent or 13 percent. Current operating conditions also matter because faster sales and strained fulfillment can change retention performance.
• The sales velocity method estimates LTV by dividing stable monthly revenue by average new monthly sales. A business holding near $100,000 per month while selling 10 new customers monthly has reached approximate equilibrium and has an estimated LTV of $10,000.
• Strong LTV gives a company more room to spend on customer acquisition and scale, while weak customer value can squeeze margins and restrict growth. Businesses in the three to ten million dollar range may struggle because they do not earn enough per customer.

Questions & Answers

Q: How do you calculate customer lifetime value quickly?

Customer lifetime value can be estimated in three quick ways. Divide total lifetime revenue by all customers sold, divide average monthly revenue per customer by the churn rate, or, when revenue is stable, divide monthly revenue by average new monthly sales. Each method is approximate, but each answers the same practical question: how much revenue is one customer worth to the business?

Q: How do you calculate LTV from total revenue and customers?

Add all revenue earned since the business began, then divide that amount by the total number of customers sold during the same period. If annual revenue was one million dollars, two million dollars, and three million dollars across three years, total revenue is six million dollars. Dividing that by 600 customers gives an estimated customer lifetime value of $10,000.

Q: Why can the lifetime revenue method underestimate LTV?

The lifetime revenue method uses money collected from the beginning of the business through the present, so it does not include payments that active customers may make in the future. As a result, dividing historical revenue by all customers provides a useful working estimate, but it can fall below the theoretical lifetime value, especially in a growing recurring-revenue business.

Q: How is monthly customer churn calculated?

Start with the customers present at the beginning of the month and identify how many of those same customers have left by the end. Divide the number who left by the opening customer count. If 100 customers begin and 95 of them remain, five left. Five divided by 100 equals a monthly churn rate of 5 percent. New customers sold during that month are excluded.

Q: How do you calculate LTV using churn?

First calculate average monthly revenue per customer by dividing monthly revenue by the customer count. Then divide that average monthly amount by the churn rate. For example, $100,000 in monthly revenue across 100 customers equals $1,000 per customer. Dividing $1,000 by 5 percent churn produces an estimated customer lifetime value of $20,000.

Q: Why should a business average its churn rate?

A single month may not represent normal retention because churn can vary substantially. The example includes monthly rates of 5 percent, 20 percent, and 13 percent, making an average more useful than choosing only the best month. The calculation should also emphasize recent performance because sales volume, fulfillment quality, and personalized attention can change the business's current churn dynamics.

Q: How do you estimate LTV from sales velocity?

Use sales velocity when monthly revenue has stayed approximately unchanged for the last three or four months. Ask for average new monthly sales, then divide stable monthly revenue by that number. If a business remains near $100,000 per month while selling 10 new customers each month, its rough LTV is $10,000 because gains and losses are maintaining equilibrium.

Q: How can LTV help project recurring monthly revenue?

LTV connects customer value, churn, sales velocity, and the revenue level a recurring business can sustain. With 5 percent churn, $1,000 monthly revenue per customer, and 20 new customers sold each month, the stated hypothetical maximum is $400,000 per month. If the company is still below that level, it may not need to change its model immediately, because continued sales can move it toward that equilibrium.

Summary & Key Takeaways

• Customer lifetime value estimates how much revenue a business earns from each customer. One method divides all revenue earned since the business began by all customers sold during that period. It is easy back-of-napkin math, but it can underestimate value because current customers may continue making payments in the future.

• A recurring business can estimate LTV by dividing its average monthly revenue per customer by its customer churn rate. Churn counts customers who leave from the opening customer group, excluding customers added during the month. Because monthly churn varies, recent results should be averaged to reflect the business's current operations.

• Sales velocity offers a fast LTV estimate when monthly revenue has remained relatively stable. Divide monthly revenue by the average number of new customers sold each month. Understanding this relationship helps entrepreneurs estimate equilibrium revenue, evaluate whether growth simply requires time, and determine how much acquisition spending customer economics may support.