Unit Economics Ratio (LTV:CAC)
The LTV to CAC ratio measures how much lifetime value you get back for every unit of acquisition cost.
Divide Customer Lifetime Value by Customer Acquisition Cost. It matters because it answers the question every growth budget asks: does a customer earn back more than they cost to win? 3:1 is the classic healthy zone. Below it, fix the economics before scaling.
Signal Type
Metric Role
Metric Type
The Formula
Worked example
Benchmarks and interpretation
Where the number actually comes from
When to use it
Common Mistakes
In the REACT framework
LTV:CAC sits in Convert but judges the whole loop: what conversion costs against what Talk earns back. Both inputs are estimates, so read it as a directional verdict, not a precision instrument.
Related metrics
Frequently Asked Questions
What is Unit Economics Ratio?
The LTV to CAC ratio measures how much lifetime value you get back for every unit of acquisition cost. It answers the only question a growth budget really asks: is this machine worth feeding?
How do you calculate Unit Economics Ratio?
Use the formula: LTV-to-CAC Ratio = Customer Lifetime Value (LTV) ÷ Customer Acquisition Cost (CAC). Keep both inputs in the same reporting period and avoid mixing users, sessions, events, or customers unless the formula calls for it.
What data do you need for LTV:CAC?
You need cost and value, pulled from the relevant connected sources and computed for the same period.
What mistakes should you avoid with LTV:CAC?
Both inputs are estimates, so avoid false precision, avoid mixing time windows between LTV and CAC, and never let a flattering ratio built on stale LTV assumptions authorise real spending.
When should marketers use LTV:CAC?
Use LTV:CAC when deciding how hard to push growth. Around 3:1 is the classic healthy zone. Below it, fix economics before scaling. Far above it, you may be leaving affordable growth on the table.
What is a good LTV:CAC?
3:1 is the common benchmark, but the honest answer depends on margins, payback period, and funding. What matters is knowing why yours sits where it does.
Sources and methodology. LTV:CAC formula and definition derive from standard marketing analytics practice and platform reporting conventions. REACTIQ360 harmonises source data from Ad platforms and marketing spend, CRM / ecommerce / billing, Harmonisation layer and applies a consistent same-period computation methodology.
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