Unit Economics
MaEcSaMpFtTt+6

LTV/CAC Ratio

The LTV to CAC ratio divides Customer Lifetime Value by Customer Acquisition Cost. A ratio of 3 to 1 is the standard benchmark — meaning every dollar spent on acquisition generates 3 dollars in customer value. Below 1 to 1 means the business loses money on every customer. Above 5 to 1 may signal underinvestment in growth.

Why LTV/CAC Matters

LTV/CAC is the single most cited metric in startup fundraising because it answers the fundamental question: can this company grow profitably? A ratio below 1.0 means you're destroying value on every customer. Between 1.0 and 3.0 means growth is possible but tight. Above 3.0 means you have room to invest aggressively in growth. Above 5.0 may mean you're underinvesting in growth. The ratio also reveals which customer segments and channels are most profitable — guiding where to double down and where to cut.

How to Calculate LTV/CAC

Divide LTV by CAC. Use the same LTV basis (revenue or gross profit) consistently. Both inputs should use the same time period methodology.

LTV/CAC Formula
LTV/CAC Ratio = Customer Lifetime Value ÷ Customer Acquisition Cost

LTV/CAC Calculator

Calculate Your LTV/CAC

Enter your numbers to calculate ltv/cac instantly.

$
$
LTV/CAC Ratio
4x

Want to model this over 36 months with scenarios? Try Revenue Map free →

Industry Benchmarks

SegmentGoodAveragePoor
SaaS (all segments)>3x2x–3x<2x
E-Commerce>3x1.5x–3x<1.5x
Consumer App>3x2x–3x<2x
Marketplace>4x2x–4x<2x

Expert Tips

The 3:1 benchmark is a guideline, not a law. Capital-efficient businesses can operate at 2:1 with fast payback. Capital-intensive businesses may need 5:1+ due to higher operational overhead.

LTV/CAC above 5x often signals underinvestment in growth — you could spend more on acquisition and still maintain healthy economics.

Segment LTV/CAC by channel, geography, and customer size. A blended 3:1 might hide a profitable enterprise channel at 8:1 and an unprofitable SMB channel at 1.5:1.

LTV/CAC is a lagging indicator. By the time you see it deteriorate, the problem (rising CAC or increasing churn) has been building for months. Track leading indicators too.

Frequently Asked Questions

What is the LTV/CAC ratio?
The LTV/CAC ratio divides Customer Lifetime Value by Customer Acquisition Cost. It measures how efficiently you convert acquisition spend into long-term customer value. A ratio of 3:1 means every $1 spent on acquisition generates $3 in customer value.
What is a good LTV/CAC ratio?
3:1 is the standard benchmark for SaaS and subscription businesses. Below 1:1 means you lose money on every customer. 1-3x means growth is possible but tight. Above 5x may indicate you should invest more in growth.
How do I improve my LTV/CAC ratio?
Either increase LTV (reduce churn, increase ARPU, improve expansion) or decrease CAC (improve conversion rates, invest in organic channels, optimize ad targeting). Churn reduction typically has the highest impact because it improves LTV exponentially.
Is LTV/CAC the same for all business models?
The 3:1 benchmark applies broadly, but context matters. Marketplace businesses often target 4:1+ due to two-sided acquisition costs. Enterprise SaaS with annual contracts may accept lower ratios due to higher certainty. E-commerce with thin margins may need higher ratios.

Related Metrics

Unit Economics

LTV

Customer Lifetime Value is the total revenue (or profit) a business expects to e...

Acquisition

CAC

Customer Acquisition Cost is the total cost of acquiring a new paying customer, ...

Unit Economics

CAC Payback

CAC Payback Period is the number of months required to recover the cost of acqui...

Unit Economics

Gross Margin

Gross Margin is the percentage of revenue remaining after subtracting the direct...

Business Models Using LTV/CAC

LTV/CAC is a key metric for these business types. Click any model to see how Revenue Map calculates it automatically.

Subscription App
E-Commerce
SaaS B2B
Marketplace
FoodTech
TravelTech
GameTech
FinTech
HealthTech
EdTech
PropTech
AI / ML

Track LTV/CAC automatically

Revenue Map calculates ltv/cac, benchmarks it against your industry, and projects it over 36 months — in under 5 minutes.

Build My Model — Free
© 2026 Revenue Map. All rights reserved.