Accounting Customer Acquisition Cost (Per-Unit) Calculator Examples
See worked customer acquisition cost examples for lean campaigns, growing teams, and channel-level spending reviews.
These examples show how the same CAC calculation can produce different results depending on spending, team costs, customer volume, and the scope of costs included. Each example uses costs and new-customer counts from the same reporting period.
Example 1: Lean digital campaign
A monthly campaign focused on direct online customer sign-ups.
Input Summary
Advertising spend
$1,200
Sales and marketing payroll
$600
Other acquisition costs
$200
New customers acquired
40 customers
Calculation Breakdown
- 1Calculate total acquisition costs$1,200 + $600 + $200$2,000
- 2Calculate CAC$2,000 / 40$50 per customer
Result Summary
Calculate total acquisition costs
$2,000
Accounting Customer Acquisition Cost (Per-Unit) Calculator
The estimated blended CAC is $50.00 per new customer.
Example 2: Growing business with a sales team
A quarterly acquisition review for a service business with a sales-assisted process.
Input Summary
Advertising spend
$18,000
Sales and marketing payroll
$24,000
Other acquisition costs
$6,000
New customers acquired
160 customers
Calculation Breakdown
- 1Calculate total acquisition costs$18,000 + $24,000 + $6,000$48,000
- 2Calculate CAC$48,000 / 160$300 per customer
Result Summary
Calculate total acquisition costs
$48,000
Accounting Customer Acquisition Cost (Per-Unit) Calculator
The estimated blended CAC is $300.00 per new customer.
Example 3: High campaign spend with fewer conversions
A one-month product launch campaign with creative and agency support.
Input Summary
Advertising spend
$12,000
Sales and marketing payroll
$4,000
Other acquisition costs
$4,000
New customers acquired
80 customers
Calculation Breakdown
- 1Calculate total acquisition costs$12,000 + $4,000 + $4,000$20,000
- 2Calculate CAC$20,000 / 80$250 per customer
Result Summary
Calculate total acquisition costs
$20,000
Accounting Customer Acquisition Cost (Per-Unit) Calculator
The estimated blended CAC is $250.00 per new customer.
Example 4: Higher volume reduces average CAC
A monthly scale-up period for an established ecommerce business.
Input Summary
Advertising spend
$15,000
Sales and marketing payroll
$5,000
Other acquisition costs
$2,000
New customers acquired
440 customers
Calculation Breakdown
- 1Calculate total acquisition costs$15,000 + $5,000 + $2,000$22,000
- 2Calculate CAC$22,000 / 440$50 per customer
Result Summary
Calculate total acquisition costs
$22,000
Accounting Customer Acquisition Cost (Per-Unit) Calculator
The estimated blended CAC is $50.00 per new customer.
How to Read Your Results
CAC is an average cost per genuinely new customer, not the cost of every individual acquisition.
Compare periods only when the cost categories, customer definition, attribution approach, and time period are consistent.
Review total acquisition costs alongside CAC so a lower average is not viewed without spending and customer-volume context.
Use separate calculations by channel, product, market, or segment when a blended result is too broad for the question being examined.
CAC is most informative when considered with separate measures of revenue, gross margin, repeat purchasing, and retention.
Assumptions & Important Notes
- Every example uses cost inputs and customer counts from the same stated period.
- New customers are counted once, rather than once per order or product purchased.
- The included payroll and other costs are assumed to support acquisition activity.
- Dollar figures are illustrative estimates and do not represent benchmarks or recommended spending levels.
Related Examples
Frequently Asked Questions
What is a good customer acquisition cost?
There is no universal good CAC. The useful level depends on the business model, customer revenue, gross margin, retention, sales cycle, and growth objectives.
Why can two businesses with the same ad spend have different CAC?
They may have different customer conversion volumes, payroll costs, agency costs, sales processes, attribution methods, or definitions of a new customer.
Can I calculate CAC for a campaign instead of a month?
Yes. Use campaign costs and the new customers attributable under your chosen method for that same campaign period.
Should I calculate blended or channel-specific CAC?
Blended CAC provides an overall view. Channel-specific CAC can be useful when reliable cost allocation and customer attribution are available.
Why did CAC rise even though new-customer volume grew?
CAC rises when total included acquisition costs grow faster than the number of new customers acquired.
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