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LTV:CAC Ratio
The ratio comparing customer lifetime value to customer acquisition cost. A 3:1 ratio is considered healthy.
Formula
On this page (7 sections)
The ratio comparing customer lifetime value to customer acquisition cost. A 3:1 ratio is considered healthy.
Why It Matters
LTV:CAC ratio is the single best indicator of business model health and scalability. A 3:1 ratio means you're generating $3 of customer value for every $1 spent on acquisition—leaving room for operations, overhead, and profit. This metric determines how aggressively you can invest in growth while remaining profitable.
Formula
Benchmarks
Good Performance
3:1
Top Performers
4:1 to 6:1
Practical Example
Scenario
A skincare brand has an average LTV of $240 (customers buy 3x at $80 AOV over 2 years). Their blended CAC across all channels is $65.
Calculation
LTV:CAC Ratio = $240 / $65 = 3.7:1Result
At 3.7:1, they have a healthy ratio that supports scaling. They could increase CAC to $80 (3:1 ratio) to accelerate growth while maintaining profitability.
In-Depth Explanation
Below 1:1 means losing money on every customer; above 6:1 may indicate underinvestment in growth.
Pro Tips
- 1Track LTV:CAC by acquisition channel. Email might show 10:1 while paid social shows 2.5:1—this reveals where to shift investment.
- 2If your ratio is above 5:1, you're likely underinvesting in growth. Competitors with 3:1 will outspend you on ads and take market share.
- 3Use cohort-based LTV, not overall average. New customer LTV expectations should drive current acquisition decisions.
- 4Factor in payback period alongside ratio. A 4:1 ratio with 18-month payback strains cash flow more than 3:1 with 6-month payback.
Common Mistakes to Avoid
Frequently Asked Questions
Related Tools
Related Terms
The total revenue a business expects to earn from a single customer over the entire duration of their relationship.
The total cost of acquiring a new paying customer, including all marketing and sales expenses divided by the number of new customers acquired over a specific period.
The time it takes to recover customer acquisition costs through gross profit.
The percentage of revenue remaining after subtracting the cost of goods sold (COGS).
Total revenue divided by total marketing spend, providing a holistic view of marketing efficiency.
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Gross Margin
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Marketing Efficiency Ratio (MER)
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