SaaS Metrics and KPIs

What is Customer Acquisition Cost (CAC)?

Updated on: October 30, 2026

Author: Yura Luzhko, SEO Manager

Reviewed by: Guy Zinger, Chief Revenue Officer (CRO)

Explore the factors influencing customer acquisition cost (CAC) and its impact on business strategies. Learn how to calculate and reduce CAC, and discover the latest trends and challenges in optimizing it for increased profitability.

What is Customer Acquisition Cost (CAC)?

Customer Acquisition Cost (CAC) is the average cost of acquiring a new customer: total sales and marketing expenses for a period divided by the number of new customers acquired in that period. For instance, when $50,000 worth of sales and marketing costs generate 100 customers, then the CAC is $500. This cost includes advertising, sales promotions, sales and marketing salaries, commissions and tools, and any other measure aimed at turning a potential lead into a paying customer.

 

You should know your CAC to fine-tune your marketing efforts and manage available resources. The most common approach to CAC depends on the accounting style of an organization and the types of costs included in calculations.

What are the factors that affect customer acquisition cost (CAC)?

Across industries and business models, there are multiple factors that go into customer acquisition cost (CAC). Such factors include:

 

  • product and service complexity
  • competition
  • SaaS compliance and regulatory rules
  • the acquisition channels used

 

In the e-commerce industry, CAC has a wide range depending on the product, the audience, and the marketing approach. Organizations need to understand the factors that drive CAC for their industry to streamline spending on marketing and analyze marketing approaches, as well as growth strategies.

What are the advantages for companies when analyzing CAC?

The main advantage of analyzing CAC: knowing the cost of acquiring customers allows companies to make decisions about marketing spending, customer acquisition strategies, and broader business initiatives.

 

Remember the following points when it comes to CAC benefits:

 

  • Determine cost-efficient communication methods and channels for marketing activities.
  • Provides guidance on the allocation of funds and the selection of suitable marketing investments.
  • Acts as a basis for calculating the ratio of customer lifetime value to CAC (LTV:CAC) and the return on investment (ROI).

 

While data collection and analysis are essential, they can be demanding and may necessitate significant resources.

 

CAC is subject to external factors such as market competition and the state of the economy.

How do I reduce customer acquisition cost (CAC), and how does it affect my business strategies?

Reducing customer acquisition cost (CAC) is a significant factor in business decisions as it can promote profitability and encourage efficient resource allocation.

 

This is because spending on marketing to new clients can be contained by narrowing the target from the general consumers to a defined group and choosing the acquisition channels that reach it.

 

It is essential to target very specific consumer traits so that no marketing costs are incurred for the already established customers.

 

Understand that although it is vital to cut down on CAC, it should never be viewed in isolation. One has to ensure that the customers you are getting are worth the effort and resources allocated.

Areas of concern associated with CAC calculation include reaching out to profitable customer segments, maintaining a good mix of cost-effective channels for customer acquisition, and ensuring that the right price and messaging are offered to the target market.

 

In terms of trends, the acquisition cost has to be reduced while enhancing the LTV:CAC ratio. The rise of e-businesses and the necessity for SaaS companies to develop customer relationships have made CAC a finance metric as well as a marketing one.

 

The LTV:CAC ratio of 3:1 or more is a rule of thumb from Bessemer Venture Partners (2019), but this ratio is subject to variation depending on the industry and specific business model. The second difference between CAC and cost per acquisition (CPA) is that in Google Ads, CPA refers to “cost per action,” and target CPA bidding specifies the cost per conversion, where conversion is an app installation and not necessarily a paying customer.

 

 

Comparing CAC Trends and Challenges Across Business Models
Aspect SaaS Companies E-commerce Businesses
CAC Calculation Challenges
Key Complexity Factors Regulatory compliance, product complexity Market volatility, product diversity
Resource Intensity High (data collection, analysis) Moderate (varied marketing channels)
Optimization Strategies
Target Approach Specific customer segments Broad market segmentation
Primary Optimization Goal Improve LTV:CAC ratio (target 3:1 or more) Reduce per-customer acquisition cost
Key Performance Metric Customer Lifetime Value (LTV) Cost per Acquisition (CPA)
Strategic Focus
Organizational Emphasis Customer relationship development Marketing and sales efficiency
Growth Approach Sustainable, relationship-based growth Volume and conversion-driven growth

Conclusion

Customer acquisition cost (CAC) gives insights to businesses that help them make informed decisions about attracting customers efficiently. CAC helps guide them to marketing approaches, allocate resources wisely, and measure returns on investment. 

Keep in mind that it is a dynamic metric influenced by market competition, economic conditions, and industry-specific factors. It is also associated with increased competitiveness, sustained growth, and a growing customer base. Results can vary depending on specific circumstances.

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