LTV:CAC Ratio

Q: How do you calculate LTV:CAC Ratio?

LTV:CAC Ratio = Customer Lifetime Value / Customer Acquisition Cost

The ratio comparing customer lifetime value to customer acquisition cost. A 3:1 ratio is considered healthy.

2 min readLast updated Apr 2026

Reviewed by Golden Digital strategy team·Reviewed against acquisition payback and retention planning workflows·Golden Digital D2C planning benchmark

Formula

LTV:CAC Ratio=Customer Lifetime Value/Customer Acquisition Cost

Example: LTV:CAC Ratio = $240 / $65 = 3.7:1

The ratio comparing customer lifetime value to customer acquisition cost. A 3:1 ratio is considered healthy.

Calculate your LTV:CAC ratio with the free LTV Calculator.

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

LTV:CAC Ratio=Customer Lifetime Value/Customer Acquisition Cost

Example: LTV:CAC Ratio = $240 / $65 = 3.7:1

Benchmarks

A good LTV:CAC Ratio is 3:1. Top performers achieve 4:1 to 6:1.

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 = 3.7:1

Result

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

Using revenue-based LTV instead of profit-based LTV. If your gross margin is 50%, a $300 revenue LTV is really $150 profit LTV.

Calculating ratio once and not updating. LTV changes with product mix and retention; CAC changes with market conditions. Recalculate quarterly.

Ignoring ratio by cohort. Recent cohorts often have different LTV potential than older ones—make decisions on forward-looking data.

Frequently asked questions

It means for every $1 you spend acquiring a customer, you get $3 back in lifetime value. After covering the $1 acquisition cost, you have $2 left for operations, overhead, and profit. This is considered the minimum healthy ratio for sustainable growth.

Not necessarily. Above 5-6:1 often indicates underinvestment in growth. You're leaving market share on the table. Companies with very high ratios can usually afford to spend more on acquisition to grow faster.

Two levers: increase LTV (better retention, higher AOV, more frequent purchases) or decrease CAC (better targeting, stronger creative, higher conversion rates, more organic acquisition). Usually improving LTV is more sustainable than constantly cutting CAC.

Put it to work

Related Terms

Customer Lifetime ValueLTV

The total revenue a business expects to earn from a single customer over the entire duration of their relationship.

Customer Acquisition CostCAC

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.

CAC Payback Period

The time it takes to recover customer acquisition costs through gross profit.

Gross Margin

The percentage of revenue remaining after subtracting the cost of goods sold (COGS).

Marketing Efficiency RatioMER

Total revenue divided by total marketing spend, providing a holistic view of marketing efficiency.

Calculate Yours

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Enter order value, how often customers buy and your margin. See lifetime value and, with your acquisition cost, how many months a new customer takes to pay it back. Calculator results are available without an account.

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