CAC ratio, also known as the Customer Acquisition Cost ratio, is a financial metric used in innovation to measure the efficiency of a company's customer acquisition efforts by comparing the lifetime value of a customer to the cost of acquiring that customer.
CAC (Customer Acquisition Cost) ratio calculation in the context of innovation involves determining the efficiency and effectiveness of your customer acquisition efforts by comparing the cost of acquiring new customers to the lifetime value those customers bring to your business. The CAC ratio is a key metric used to evaluate the return on investment (ROI) of your customer acquisition activities.
Step-by-Step Guide:
The Customer Acquisition Cost (CAC) Ratio measures how effectively a company is acquiring new customers in relation to the revenue they generate.
- Identify Customer Acquisition Cost (CAC)
- CAC = Total sales & marketing expenses / Number of new customers acquired.
- Calculate Monthly Recurring Revenue (MRR)
- MRR = Revenue generated from new customers in a specific month.
- Calculate Gross Margin
- Gross margin = (Revenue - Cost of Goods Sold) / Revenue.
- Apply the CAC Ratio Formula

- Interpret the Results
- CAC Ratio > 1: Efficient customer acquisition (strong return).
- CAC Ratio < 1: Inefficient acquisition (costs exceed returns).
Example:
Salesforce is a company that has effectively mastered the CAC Ratio Calculation. As a SaaS (Software as a Service) company, Salesforce constantly tracks its Customer Acquisition Cost (CAC) in relation to its revenue growth, especially from subscription-based customers.
How Salesforce excels in CAC Ratio:
- Efficient Sales and Marketing: Salesforce invests heavily in targeted sales and marketing, ensuring that they acquire high-value customers with a clear return on investment.
- High Customer Retention: Salesforce's strategy to provide consistent value, through innovation and customer support, ensures a high lifetime value (LTV) for its customers, which helps them maintain a positive CAC ratio.
- Strong Recurring Revenue: With their subscription-based model, Salesforce has a stable Monthly Recurring Revenue (MRR), which helps them calculate an accurate CAC Ratio, demonstrating efficient use of their marketing spend relative to revenue generation.
By keeping their CAC Ratio > 1, Salesforce ensures that the cost of acquiring a customer is well below the revenue generated from that customer, making their acquisition strategy highly efficient.

For more information on the topic, please see the source below:
Smetanková, J., Krajníková, K., Mandičák, T., Behúnová, A. (2020). Analysis of Customer Acquisition Cost and Innovation Performance Cost After BIM Technology Implementation. In: Knapcikova, L., Balog, M., Peraković, D., Periša, M. (eds) New Approaches in Management of Smart Manufacturing Systems. EAI/Springer Innovations in Communication and Computing. Springer, Cham. https://doi.org/10.1007/978-3-030-40176-4_16

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