Cost Calculator AI
Business & StartupMarketing KPI

Customer Acquisition Cost (CAC) Calculator

Calculate Customer Acquisition Cost (CAC) by combining paid advertising spend, marketing salaries, creative agency fees, and sales tools divided by new clients won.

Sales & Marketing Outlays

Customer Conversion Volume

Customer Acquisition Cost (CAC) Formula

CAC = (Advertising Spend + Sales & Marketing Salaries + Software + Agency Fees) / Total New Customers Acquired
  • Direct Ad Spend: Media spend across Google Ads, Meta, TikTok, print, and sponsorship channels.
  • Sales & Marketing Overhead: In-house growth team compensation, SDR commissions, CRM software, and creative agencies.
  • New Customers: Unique first-time paying accounts onboarded during the measurement window.

Step-by-Step Worked Example

Scenario: Spending $40,000 on growth ($15,000 ads, $20,000 sales wages, $5,000 tools/agency) to acquire 200 new customers

Calculation Steps:

  1. Total Acquisition Spend = $15,000 + $20,000 + $5,000 = $40,000
  2. Customer Acquisition Cost (CAC) = $40,000 / 200 customers = $200.00 / customer
  3. Ad Spend Share = $15,000 / 200 = $75.00 / customer
  4. Sales Labor Share = $20,000 / 200 = $100.00 / customer
Result: Blended Customer Acquisition Cost is $200.00 per paying customer ($75 ad spend + $100 sales payroll + $25 tooling).

How to Use This Calculator

  1. 1Enter all advertising media spend for the campaign or monthly period.
  2. 2Include sales and marketing staff salaries, commissions, and software tools.
  3. 3Input the total count of new paying customers acquired.

Assumptions & Limitations

  • Only includes expenses directly dedicated to acquiring new accounts, not retaining existing ones.
  • Customers acquired organic or word-of-mouth are included in the blended denominator.

Frequently Asked Questions

What is a "good" Customer Acquisition Cost?

CAC cannot be evaluated in isolation; it must be compared against Customer Lifetime Value (LTV). A healthy business model typically maintains an LTV:CAC ratio of 3:1 or higher.

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