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Customer Acquisition Cost Calculator

Discover how much it costs to acquire a new customer with our calculator. Make informed decisions to boost your marketing effectiveness.

Business & Tax · Reviewed by FreeCalculators Editorial · Updated 2026-09-01

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How it works

The Customer Acquisition Cost (CAC) Calculator helps businesses determine the cost associated with acquiring a new customer. To calculate CAC, you divide your total sales and marketing spend by the number of new customers gained within a specific period. For example, if your total spend is $50,000 and you acquire 200 new customers, your CAC would be $50,000 ÷ 200 = $250. This means it costs you $250 to acquire each new customer. Additionally, the calculator provides insights into the Lifetime Value (LTV) to CAC ratio, which indicates the long-term value of a customer compared to the acquisition cost. In this case, if the average customer LTV is $800, the LTV:CAC ratio would be $800 ÷ $250 = 3.2, suggesting that for every dollar spent on acquiring a customer, you can expect to earn $3.20 in return. The calculator also estimates the CAC payback period, showing how many months it takes to recover the acquisition cost based on your monthly revenue per customer.

Formula


                CAC = Total S&M spend ÷ New customers | LTV:CAC ratio = Customer LTV ÷ CAC | Payback period = CAC ÷ Monthly revenue per customer

Tips

  • Regularly review your marketing spend to ensure efficient allocation of resources.
  • Track customer retention rates to improve LTV and justify higher acquisition costs.
  • Experiment with different marketing channels to find the most cost-effective methods.
  • Utilize customer feedback to refine your acquisition strategies and enhance customer experience.

Frequently asked questions

What is a good Customer Acquisition Cost?
A good CAC varies by industry, but generally, a CAC that is less than one-third of the LTV is considered healthy.
How can I reduce my Customer Acquisition Cost?
You can reduce CAC by optimizing marketing strategies, improving conversion rates, and enhancing customer referrals.
What does the LTV to CAC ratio indicate?
An LTV to CAC ratio above 3:1 is typically considered a sign of a sustainable business model.
How is the CAC payback period calculated?
The CAC payback period is calculated by dividing your CAC by your monthly revenue per customer. For example, if your CAC is $250 and your monthly revenue per customer is $100, the payback period would be 2.5 months.