Customer Acquisition Cost (CAC) Calculator

Calculate your Customer Acquisition Cost (CAC) efficiently with our advanced, accessible, mobile-friendly calculator designed for marketing professionals.

Input your CAC assumptions

How to Use This Calculator

Use this calculator to determine your Customer Acquisition Cost (CAC), which is crucial for understanding the efficiency of your marketing and sales efforts. This tool is designed for marketing professionals seeking to optimize their expenditure and enhance strategic planning.

Data Source and Methodology

All calculations are based on standard accounting practices and methodologies. For more information, please refer to the latest authoritative guidance on marketing and sales expense tracking.

Methodology

The calculator sums your marketing and sales spend and divides that total by the number of new customers acquired over the same period, reflecting the standard CAC formula used by finance teams.

Glossary of Terms

  • Total Marketing Spend: All marketing expenses for the measured period.
  • Total Sales Spend: Sales-related costs including commissions and outreach.
  • Number of New Customers: The count of customers acquired in the same timeframe.
  • Customer Acquisition Cost (CAC): The per-customer cost calculated using the formula shown below.

Example

Assume your Total Marketing Spend is $10,000, Total Sales Spend is $5,000, and you acquire 100 new customers. Using CAC = (Marketing + Sales) ÷ Customers, the calculator returns $150 per customer.

Frequently Asked Questions

What is Customer Acquisition Cost (CAC)?

CAC is the cost associated with acquiring a new customer, including marketing and sales expenses.

Why is CAC important?

CAC helps you understand how effectively your budget is being spent to attract new customers and informs budgeting and pricing decisions.

Formulas

Customer Acquisition Cost (CAC):

CAC = \(\frac{\text{Total Marketing Spend} + \text{Total Sales Spend}}{\text{Number of New Customers}}\)
  • Total Marketing Spend + Total Sales Spend = Total acquisition spend
  • Divide by the number of new customers to get per-customer cost
Citations

NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures

FTC — Consumer advice — consumer.ftc.gov · Accessed 2026-01-19
https://consumer.ftc.gov/

Changelog
  • 0.1.0-draft — 2026-01-19: Initial audit spec draft generated from HTML extraction.
  • 0.1.0-draft — 2026-01-19: Convert extracted formulas to LaTeX and confirm sources.
Verified by Ugo Candido Last Updated: 2026-01-19 Version 0.1.0-draft
Version 1.5.0