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Customer Economics Calculator
Understand what it costs to acquire a customer, what that customer is worth over time and whether the economics of acquisition stack up.
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From acquisition cost to customer value
Customer economics is where marketing performance meets commercial reality. A low acquisition cost is not automatically good, and a high acquisition cost is not automatically bad. The useful question is whether the value generated by a customer comfortably exceeds the cost of acquiring them — and how quickly that acquisition cost is recovered.
This calculator brings the core customer metrics together rather than treating CAC and CLV as unrelated calculations.
What the calculator covers
| Metric | What it tells you |
|---|---|
| CAC | The total cost of acquiring an actual customer. |
| CLV | The estimated value a customer generates over their relationship with the business. |
| CLV:CAC | The relationship between lifetime value and acquisition cost. |
| CAC payback | How long it takes for customer contribution to recover the acquisition cost. |
| Maximum sustainable CAC | An estimated acquisition-cost ceiling based on your target customer economics. |
Why CAC and CLV should be looked at together
CAC tells you what it costs to win a customer. CLV tells you what that customer is expected to be worth. On their own, either figure can be misleading. Their relationship is what helps marketers assess whether growth is economically sustainable.
The calculator distinguishes between revenue CLV and contribution-based CLV when contribution margin is supplied, because £500 of customer revenue is not the same thing as £500 of customer contribution.
Important limitations
Customer lifetime value is an estimate, not a promise. It depends on assumptions about purchase frequency, retention, margin and future customer behaviour. CAC also needs a consistent definition: excluding sales, agency, software or other acquisition costs can make the metric look healthier than the underlying economics really are.
Need one customer metric?
Use the full Customer Economics Calculator when you want to connect acquisition cost with customer value. For a quicker calculation, use the CAC Calculator, CLV Calculator or CLV:CAC Ratio Calculator. You can also browse the Free Marketing Tools hub.
Frequently asked questions
Is CPA the same as CAC?
No. CPA normally refers to the advertising cost of a defined action or acquisition event. CAC should represent the broader cost of acquiring an actual customer.
Should CLV use revenue or profit?
Both views can be useful, but a contribution or margin-adjusted CLV is generally more meaningful when comparing customer value with acquisition cost.
What is a good CLV:CAC ratio?
There is no universal target that suits every business. The right balance depends on margin, cash flow, growth objectives, payback period and the confidence you have in the underlying CLV assumptions.