CAC Calculator

Calculate your customer acquisition cost (CAC) to understand how much you’re spending to gain each new customer. This tool helps entrepreneurs and small business owners break down marketing and sales expenses by channel. Use it to optimize your budget and improve profitability.

Customer Acquisition Cost (CAC) Calculator

Include all marketing and sales expenses for the period.
Number of new customers acquired in the same period.

How to Use This Tool

Select either Simple or Detailed mode. In Simple mode, input your total acquisition cost and the number of new customers. In Detailed mode, add each marketing channel with its associated cost, then provide the total new customers. Click Calculate to see the CAC and a breakdown of spend by channel.

Formula and Logic

The Customer Acquisition Cost (CAC) is calculated as:

CAC = Total Acquisition Cost / Number of New Customers

In Detailed mode, the tool also calculates the percentage of total cost attributed to each channel.

Practical Notes

For a sustainable business, aim for a Customer Lifetime Value (LTV) that is at least three times your CAC. Different channels will have varying CACs; use the breakdown to identify high-performing channels and reallocate budget accordingly. Ensure that the time period for costs and new customers aligns (e.g., both monthly). Include all relevant costs: advertising, marketing salaries, sales commissions, and tools. For e-commerce, consider costs like platform fees and shipping for promotional items. In trade and B2B, factor in travel, samples, and trade show expenses.

Why This Tool Is Useful

Understanding CAC is critical for evaluating the efficiency of your marketing and sales efforts. It helps in budgeting, forecasting, and making data-driven decisions to improve profitability. By breaking down costs by channel, you can optimize your marketing mix and focus on the most cost-effective channels.

Frequently Asked Questions

What is a good CAC?

There is no one-size-fits-all benchmark. It varies by industry and business model. Generally, an LTV:CAC ratio of 3:1 or higher is considered healthy. For example, in e-commerce, a CAC under $50 might be good for low-margin products, while for SaaS, CAC can be several hundred dollars.

Should I include all costs in my CAC calculation?

Yes, include all costs directly tied to acquiring new customers. This includes advertising spend, marketing and sales team salaries and commissions, marketing tools, and any other expenses that would not exist without acquisition efforts. Exclude general overhead like rent or utilities.

How often should I calculate CAC?

Monthly is typical for most businesses. For fast-scaling startups or seasonal businesses, weekly or quarterly may be more appropriate. The key is consistency: compare the same time periods to track trends.

Additional Guidance

Use this calculator in conjunction with a Customer Lifetime Value (LTV) calculator to ensure your acquisition costs are sustainable. Track CAC over time to spot trends and the impact of marketing changes. Test new channels with small budgets first to estimate their CAC before scaling.