What is Lifetime Value (LTV)? Calculation & Formula 2025

Estimated reading time: 13 minutes

What is lifetime value? Definition, formula and calculation (2025)

By 2025, knowing what lifetime value (LTV) is is no longer an option, it is a necessity. Companies that manage their customer acquisition using the LTV:CAC ratio achieve an average of 40% higher marketing margin. Yet, this KPI remains a mystery to many. You’ve heard about it in webinars, you see the acronym everywhere, but let’s be clear: you don’t know exactly how to calculate it, or what it can actually be used for. That’s normal. This KPI is crucial, but it’s often buried in overly theoretical jargon that renders it unusable.

This article will change that. My goal is simple: to explain Lifetime Value to you pragmatically, with concrete examples and use cases you can apply starting tomorrow. In my experience as a digital strategist, I’ve seen dozens of companies transform their profitability simply by mastering this metric. What really works is putting theory into practice.

So we’re going to look at together: the precise definition of LTV, its formula explained clearly, how to calculate it in 5 minutes flat, and above all, how to use it to drive your acquisition and retention strategy, whether you’re in e-commerce, SaaS or services.

What is Customer Lifetime Value (LTV/CLV)?

Simply put, Customer Lifetime Value (or LTV) is a metric that measures the total revenue a customer will generate for your business throughout their relationship with you. It’s the sum of all the profits you can expect from an average customer, from their first purchase until the day they cease to be a customer. In practice, it’s the barometer of the health and sustainability of your business model.

Clear definition: There Customer Lifetime Value (LTV) represents the total sum of profits generated by an average customer throughout their relationship with your company. This indicator measures the total financial value a customer brings you, well beyond their first purchase.

Thinking in terms of LTV (Lifetime Value) means shifting from a short-term perspective (how much will this sale bring in?) to a long-term strategic vision (what is this customer’s value over 3, 5, or 10 years?). This allows you to identify your most profitable customers and understand how much you can reasonably spend to acquire new ones. The concrete result? You stop throwing money away on acquiring “vampire” customers who cost you more than they bring in.

LTV vs CLV: what’s the difference?

You will often see the terms LTV, CLV, or even CLTV. Let’s be clear: it’s the same thing.

• LTV : Lifetime Value. The shortest and most common acronym.
• CLV Customer Lifetime Value. The full, more formal version.
• CLTV Another variation of Customer Lifetime Value.

In French, we speak of “Customer Lifetime Value”Don’t be confused by these acronyms, they all refer to the same fundamental concept.

Why is LTV a KPI, not just a metric?

A metric measures an activity (e.g., the number of visits to a website). A KPI (Key Performance Indicator) measures performance against a strategic objective. LTV is a KPI because it is directly linked to the profitability and sustainable growth of your business. It doesn’t just tell you “how much,” it tells you “is my business viable in the long term?” It’s a true strategic management tool.

The LTV formula: How to express it mathematically

Let’s get to the heart of the matter. How do we calculate this famous LTV? There are several formulas, from the simplest to the most complex, but the most widely used and practical one to start with is the following. It’s based on three fundamental variables that you probably already have in your data.

The Essential LTV Formula:

LTV = Average order value (€) × Purchase frequency (per year) × Customer lifetime (in years)

This formula is powerful because it’s simple to understand and calculate. It’s based on the principle that a customer’s lifetime value (LTV) is the product of their average spend per order, the number of times they order, and the number of years they remain a loyal customer. It’s logical and intuitive. Why multiply and not add? Because these three factors leverage each other. A small improvement in each variable can have an exponential impact on your overall LTV.

Component	Definition	Unit	Example
Average basket	Average amount spent by a customer on a single order.	€	€50
Purchase frequency	Average number of orders placed by a customer over a given period (often 1 year).	Purchases/year	4 purchases per year
Customer lifetime	Average period during which a customer remains active and buys from you.	Years	3 years

The alternative formula with attrition rate (for more advanced users)

For subscription-based businesses like SaaS, another formula is often more accurate because it directly incorporates the churn rate (or attrition rate). In practice, it is very useful:

LTV = (Average Order Value × Purchase Frequency) / Churn Rate

This approach is particularly relevant when the “end of life” of a customer is clearly marked by a cancellation.

The 3 variables of the calculation explained in detail

Calculating LTV is first and foremost about knowing how to correctly measure its three components. Where do these figures come from? How do you obtain them? Let’s be practical; here’s a step-by-step guide for each variable.

Calculation of the Average Order Value (AOV)

This is the simplest variable to obtain. It represents the average amount each customer spends per transaction.

Average Basket Formula:

Total revenue over a period ÷ Total number of orders over the same period

Data source: Your e-commerce CMS (Shopify, PrestaShop), your CRM, or your invoicing software.

Purchase Frequency Measurement

This metric indicates how many times an average customer buys from you over a given period (usually one year to smooth out seasonal effects).

Purchase Frequency Formula:

Total number of orders over a period ÷ Number of unique customers over the same period

Data source: Your CRM or your customer database.

Customer Lifetime Calculation

This is the most complex variable to estimate. It represents the average time a customer remains active. For businesses without contracts, the most reliable calculation is based on your retention rate (or its inverse, the churn rate).

Customer Lifetime Formula:

1 ÷ Churn Rate

Where the Attrition rate = (Number of customers lost / Number of customers at the beginning of the period) × 100.

For example, if you lose 20% of your customers each year (churn rate of 0.2), the average customer lifetime is 1 / 0.2 = 5 years.

Complete example of calculating LTV

Theory is all well and good. Practice is better. Let’s take a concrete example to make everything clear. Imagine that I manage an e-commerce store that sells coffee beans by subscription.

Example: “Jordan’s Café”

Here is the data from my activity over the last 12 months:

• Annual revenue: €300,000
• Total number of orders: 6,000
• Number of unique customers: 1,500
• Annual retention rate: 75% (which means I lose 25% of my clients every year)

Step-by-step calculation:

1. Calculating the Average Basket Size:
   €300,000 ÷ 6,000 orders = €50 per order.
2. Purchase Frequency Calculation:
   6,000 orders ÷ 1,500 customers = 4 purchases per customer per year.
3. Customer Lifespan Calculation:
   My retention rate is 75%, so my attrition rate is 25% (0.25).
   Lifespan = 1 ÷ 0.25 = 4 years.
4. Final LTV calculation:
   LTV = €50 (Average Basket) × 4 (Frequency) × 4 (Lifespan) = €800.

Concrete result: Each customer I acquire will bring me in on average €800 regarding their entire relationship with my shop. This information is invaluable. It will allow me to decide how much I’m willing to pay to acquire a new customer.

Why measure Lifetime Value? Importance and use cases

Now that you know how to calculate LTV, the most important question is: what do I do with it? In practice, LTV is a strategic compass that guides three key areas of your business: marketing, loyalty, and product strategy.

What really works is using LTV to make informed decisions. Here are the 3 main use cases:

• 1. Manage your acquisition budget: The LTV (Length to Customer) tells you the maximum amount you can spend to acquire a customer. It’s the basis of the well-known LTV:CAC ratio.
• 2. Segment and prioritize your customers: Not all customers are created equal. By calculating LTV per segment (acquisition source, first order, etc.), you can identify your “VIP” customers and focus your efforts on the channels that bring in the most profitable customers.
• 3. Justify investments in customer loyalty: A 5% increase in customer retention can boost profits by 25% to 95%. Lifetime Value (LTV) allows you to accurately measure the impact of a loyalty program, improved customer support, or an engaging content strategy.

The LTV:CAC (Customer Acquisition Cost) ratio is arguably the most powerful metric for a marketing director. It compares the value a customer brings with the cost of acquiring them (and believe me, it makes all the difference).

LTV:CAC Ratio	Interpretation	Recommended action
< 2:1	Ineffective. You lose money or have no profit margin.	Red alert: Urgently reduce the CAC or increase the LTV.
2:1 to 3:1	Profitability limit. It’s just acceptable but fragile.	To optimise : Monitor closely and look for ways to improve.
> 3:1	Excellent. Your acquisition model is sound and scalable.	To validate : You can confidently increase the acquisition budget.
5:1	Exceptional. Opportunity for massive growth.	Accelerate: Invest aggressively to gain market share.

LTV vs CAC: Two complementary metrics to master

You can’t talk about LTV without talking about its twin: CAC, or Customer Acquisition Cost. This is one of the biggest content gaps I see among my competitors: they explain one without the other. It’s like trying to navigate with only one GPS coordinate. Let’s be clear: LTV alone means nothing. It’s its comparison with CAC that gives it its full power.

THE CAC (Customer Acquisition Cost) represents the total amount you spend on marketing and sales to acquire a single new customer. CAC = Total Marketing & Sales Costs ÷ Number of New Customers Acquired

LTV and CAC are two sides of the same coin: customer profitability. One measures gains, the other costs.

Criteria	LTV (Lifetime Value)	CAC (Customer Acquisition Cost)
Definition	Total income generated by a customer over its lifetime.	Total cost to acquire a new customer.
Nature	Metric of income and of value.	Metric of cost andinvestment.
Temporality	Long term (years).	Short term (one shot).
Objective	Maximize.	Minimize (while maintaining quality).
Relationship	THE LTV:CAC ratio must be greater than 3 for a sustainable business.

Jordan’s Tip: The Golden Ratio

Your sole obsession should be the LTV:CAC ratioHe’s the one who tells you if your growth engine is working or if it’s burning cash.

• Ratio 1:1: Every euro invested earns a euro. You stagnate while losing money (operational costs).
• Ratio 3:1: This is the viability threshold. For every euro invested, you earn three. You have room to operate and reinvest.
• Ratio 5:1 and above: You’ve struck gold. It’s time to hit the gas.

Golden rule: Aiming for an LTV:CAC ratio of 3:1 is the bare minimum for a healthy business.

Adapt LTV to your sector (E-commerce, SaaS, Services)

A common mistake is believing that there’s only ONE way to calculate and interpret LTV. In practice, the orders of magnitude and key variables vary dramatically from one sector to another. A good LTV for an e-commerce business would be disastrous for a SaaS company. Here are some concrete benchmarks to help you understand the situation.

Sector	Average lifespan	Typical frequency	Benchmark LTV	Specifics of the calculation
E-commerce	2-4 years	2-5 times/year	€150 – €800	Seasonality is strong. The calculation must be based on annual cohorts.
SaaS (B2B)	5-8 years old	12 times/year (monthly)	€5,000 – €50,000	The calculation must absolutely use the monthly churnLifespan = 1 / monthly churn.
B2B Services (Agency)	7-10 years old	1-2 times/year (contracts)	€50,000 – €500,000	LTV is often calculated based on the value of contracts and renewals.
Physical Retail	2-5 years	6-12 times/year	€200 – €1,000	Loyalty is key. Loyalty programs are the best source of data for retention.

LTV in e-commerce: the frequency game

Focus on E-commerce: Your main lever is the frequency of purchaseThe average customer lifetime is often short, and increasing the average order value is difficult. Focus on follow-up emails, loyalty programs, and personalized recommendations to encourage repeat business.

LTV in SaaS: Churn is your enemy

Focus on SaaS: Your LTV is directly inversely proportional to your monthly churnEach churn point you reduce has an exponential impact on your LTV. Lifespan is calculated as follows: 1 ÷ Monthly churn rateIf you have 2% churn per month, your customer lifetime is 50 months (more than 4 years).

LTV in B2B services: the value of the contract

Focus B2B Services: Here, the average basket The contract value is the star. The lifespan is very long. LTV is often calculated by projecting the value of recurring contracts and upsell opportunities (sales of additional services) over several years.

FAQ – Frequently Asked Questions about LTV

What is the exact formula for LTV?

The most common and simplest formula is: LTV = Average order value × Purchase frequency × Customer lifetime. This is the best starting point. For subscription-based models, a more precise formula can be used: LTV = Average recurring value per customer ÷ Churn rateEach variable (basket, frequency, duration) is calculated from your CRM or sales data.

What is the difference between LTV and CLV?

None, they are synonyms. LTV stands for Lifetime Value, while CLV stands for Customer Lifetime Value. Both terms, as well as their French translation “Valeur Vie Client,” refer to exactly the same thing: the total profit generated by an average customer throughout their relationship with your company. Don’t let the jargon confuse you.

How can I increase the Lifetime Value of my clients?

To increase your LTV, you need to act on one of the 3 variables in the formula. Either you increase the average basket (via upsell, cross-sell, bundled offers), or you increase the frequency of purchase (via email marketing, loyalty programs), or you extend the customer lifespan by reducing your attrition rate (better customer support, superior product experience).

What LTV should I consider good for my e-commerce / SaaS?

There’s no such thing as a “good” LTV in absolute terms; it all depends on your Customer Acquisition Cost (CAC). The key indicator is the LTV:CAC ratio, which should ideally be greater than 3:1. An e-commerce business can be very profitable with a LTV of €250 if its CAC is €50 (5:1 ratio), while a SaaS business with an LTV of €5,000 can lose money if its CAC is €3,000 (1.6:1 ratio). Focus on the ratio, not the raw value.

Does LTV apply to all types of businesses?

Yes, the concept of LTV is universal, but its calculation method must be adapted to your business model. In SaaS, the calculation is based on monthly churn. In B2B, it’s based on contract value and renewal cycles. In e-commerce, it’s crucial to consider seasonality and non-recurring purchasing behavior. The principle remains the same, but the input variables change.

LTV and CAC: how are the two linked?

The LTV:CAC ratio is the ultimate measure of your marketing profitability. It tells you whether the money you spend acquiring customers is a worthwhile investment. If your ratio is greater than 3, it means that for every euro spent on acquisition, you recoup more than three over the customer lifetime. This indicates a healthy and scalable business model. Below this level, you’re in danger.

Drive by LTV: Your best strategy for 2025

Ultimately, Lifetime Value is much more than just a metric. It’s the KPI that connects your marketing efforts to your company’s true profitability. Its three components—average order value, purchase frequency, and lifetime value—are concrete levers you can use today. But the real secret is to never look at it in isolation. The LTV:CAC ratio should become your obsession, and keeping it above 3:1 your primary objective.

My final piece of advice? No bullshit: start simple. Calculate your LTV with the data you have, even if it’s imperfect. This first figure will already give you a strategic direction. Then, iterate. Launch a campaign to increase frequency, test an upsell to boost the average order value. Measure the impact. That’s what data-driven marketing is all about.

Now that you know what lifetime value is and how to calculate it, it’s time to get your hands dirty and discover the true value of your customers.