LTV/CAC Ratio
The LTV/CAC Ratio is a business metric that shows how profitable customer acquisition is. It compares the Lifetime Value (LTV) of a customer with the Customer Acquisition Cost (CAC).
The metric helps to understand whether marketing expenses are paying off and how effectively a company is scaling its growth.
Formula
The ratio is calculated as follows:
LTV/CAC=LTVCACLTV/CAC = \frac{LTV}{CAC}LTV/CAC=CACLTV
Where:
- LTV (Lifetime Value) — the total profit or revenue a customer brings to the company over the entire period of their relationship.
- CAC (Customer Acquisition Cost) — the cost of acquiring one customer, including marketing and advertising expenses.
Calculation Example
Suppose:
- The average customer brings the company €600 over the entire cooperation period.
- The cost of acquiring one customer is €200.
Then: LTV/CAC=600200=3LTV/CAC = \frac{600}{200} = 3LTV/CAC=200600=3
This means that each acquired customer generates 3 times more revenue than was spent on acquiring them.
How to Interpret the Metric
The following benchmarks are commonly used:
- LTV/CAC < 1 — The business is losing money on customer acquisition.
- LTV/CAC ≈ 1–2 — Low marketing efficiency.
- LTV/CAC ≈ 3 — A healthy and sustainable business model.
- LTV/CAC > 4–5 — The company might be underinvesting in growth and marketing.
Why Analyze LTV/CAC
The metric helps to:
- Assess marketing profitability.
- Make decisions about scaling advertising.
- Optimize customer acquisition costs.
- Improve user retention and monetization strategies.
- Analyze the sustainability of the business model.
Where the Metric is Used
The LTV/CAC ratio is particularly important for:
- SaaS services
- E-commerce
- Subscription services
- Startups and digital products
- Companies with active marketing investments
Key Takeaways
The LTV/CAC ratio shows how profitable customer acquisition is for a business.
If the indicator is above 3, it usually indicates that marketing is working efficiently and the company can safely scale the acquisition of new customers.
