Collect the matching inputs.
Use observed or modeled contribution LTV before subtracting CAC, then divide by fully loaded CAC for the same cohort. Label any forecast horizon and assumptions.
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Customer loyalty · LTV:CACLTV to CAC ratio.
LTV to CAC ratio.
Connect acquisition cost to customer value.
LTV to CAC compares customer contribution value with the cost of acquiring that customer. Both inputs should describe the same population and a clearly stated value horizon.
Start with your numbers.
LTV:CAC calculator
01 / The definitionWhat is
What is
ltv to cac ratio?
LTV to CAC compares customer contribution value with the cost of acquiring that customer. Both inputs should describe the same population and a clearly stated value horizon.
Using revenue LTV overstates economic value. Subtracting CAC inside LTV and again through the ratio mixes definitions.
02 / The measurementA clear formula.
A clear formula.
A useful comparison.
LTV:CAC =Contribution LTV per customer ÷ Acquisition cost per customer
Read the result in context.
Evaluate the ratio with cash payback time, uncertainty and available capital. A larger long-term ratio can still involve an unaffordable cash delay.
Document the comparison.
Keep the reporting dates, population, exclusions and calculation with every result. Show underlying counts as well as the average or rate, so a small sample does not look more conclusive than it is.
Illustrative example
From inputs to insight.
- Contribution LTV per customer
- 150
- Acquisition cost per customer
- 50
- LTV:CAC
- 3×
3× LTV:CAC in this illustration. It is a calculation example, not a recommended benchmark.
Try your numbers ↑03 / Industry benchmarksContext first.
Context first.
Targets second.
Evaluate the ratio with cash payback time, uncertainty and available capital. A larger long-term ratio can still involve an unaffordable cash delay.
We have not verified a public industry benchmark that matches the exact definition used on this page. A precise-looking generic range would hide important differences between businesses.
Build your own benchmark
Start with a comparable baseline.
01
Match the population.
Choose the category, channel or customer cohort you can compare consistently.
02
Let the data mature.
Use complete periods and allow the purchase, attribution or returns window in your definition to close.
03
Test a specific opportunity.
Set a target from your economics and observed variation. Keep conversion and contribution in view.
04 / Clerk customer evidenceReal stories.
Real stories.
Clear measurement limits.
We have not verified a published Clerk customer case with a quantified ltv to cac ratio result matching this page’s definition.
What would count as useful evidence?
A case reporting contribution ltv per customer and acquisition cost per customer, with the time window and comparison method. General revenue growth or a related engagement metric does not establish this result.
Customer stories describe individual implementations. They are not industry benchmarks, guarantees or standardized causal tests.
05 / Put it into practice
Connect acquisition cost to customer value.
Improve the experience after acquisition and measure repeat contribution before raising customer acquisition budgets.
06 / Common questionsA little more
A little more
clarity.
How do I calculate ltv to cac ratio?
Contribution LTV per customer ÷ Acquisition cost per customer. 3× LTV:CAC in this illustration. It is a calculation example, not a recommended benchmark.
What should I check before comparing results?
Using revenue LTV overstates economic value. Subtracting CAC inside LTV and again through the ratio mixes definitions.
What is a good ltv to cac ratio?
Evaluate the ratio with cash payback time, uncertainty and available capital. A larger long-term ratio can still involve an unaffordable cash delay.
Does a higher attributed result prove incremental growth?
No. Attribution connects an interaction with an outcome under a reporting rule. To estimate what a change added, compare randomly assigned treatment and control groups using the same eligible population and a predefined measurement window.
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