Marketing Last updated: July 2026

Customer Acquisition Cost Calculator

The Customer Acquisition Cost (CAC) Calculator determines the total cost of acquiring a new customer, including all marketing and sales expenses. CAC is a fundamental metric for assessing business sustainability and growth potential.

How to Use the Customer Acquisition Cost Calculator

Interactive calculator available after JavaScript loads.

Loading calculator...

Written by Calculator Archive Team

Math & Finance Experts — Verified Formulas, Peer-Reviewed Sources, Expert Analysis

Looking for a deeper explanation?

Read our comprehensive, peer-reviewed educational article in our Blog to learn the underlying math, formulas, and step-by-step examples.

Read Blog Guide ›

Mathematical Formula & Logic

CAC = Total Marketing & Sales Costs / Number of New Customers
Variable Glossary
CAC Customer Acquisition Cost — total cost to acquire one customer
Total Marketing & Sales Costs All costs related to acquiring customers
Number of New Customers New customers acquired during the period

Step-by-Step Worked Calculation

Scenario: Calculating CAC for a SaaS business

A SaaS company spends $50,000 on marketing and sales in a month and acquires 200 new customers.

1

Step 1: Total Marketing & Sales Costs = $50,000, New Customers = 200.

2

Step 2: CAC = $50,000 / 200.

3

Step 3: CAC = $250.

4

Step 4: It costs $250 to acquire each new customer.

How to Use the Customer Acquisition Cost Calculator

  1. 1. Enter your total marketing and sales expenses.
  2. 2. Input the number of new customers acquired in the period.
  3. 3. The calculator computes your CAC.
  4. 4. Compare against Customer Lifetime Value (LTV).

What Is a Customer Acquisition Cost Calculator?

Customer Acquisition Cost (CAC) represents the total cost of acquiring a new customer, including all marketing and sales expenses divided by the number of new customers acquired.

Why This Calculation Matters

CAC is crucial for understanding business sustainability. If CAC exceeds customer lifetime value, the business model is not viable long-term.

Common Mistakes to Avoid

  • Not including all acquisition costs
  • Comparing CAC across different business models
  • Ignoring the time value of money in CAC calculations
  • Not accounting for customer quality differences

Frequently Asked Questions

Complete indexable directory of answers (6 questions)

What is a good CAC?

A good CAC should be significantly lower than your Customer Lifetime Value (LTV). The ideal LTV:CAC ratio is 3:1 or higher, meaning you earn $3 for every $1 spent on acquisition.

How can I reduce my CAC?

Improve conversion rates, optimize marketing channels, leverage organic growth, implement referral programs, and improve product-market fit.

What costs should be included in CAC?

Include all marketing costs (ads, content, tools), sales team salaries and commissions, marketing software, creative production, and any other costs directly related to customer acquisition.

How does the Customer Acquisition Cost Calculator calculate its results?

The Customer Acquisition Cost Calculator uses verified mathematical formulas processed entirely in your browser. Calculator inputs and results are never sent to external servers. We do use Google Analytics and AdSense for standard website operation — see our Privacy Policy for details.

Is my data safe when using this Customer Acquisition Cost Calculator?

Yes. All calculations happen locally in your browser. We never store, transmit, or log any input data you enter into the calculator.

What should I do if I get an unexpected result?

Double-check that all inputs are valid numbers within reasonable ranges. If you believe there is an error, please contact us with your input values and we will investigate.