LTV:CAC Ratio

MetricRevOps

The ratio of Customer Lifetime Value to Customer Acquisition Cost. The most important efficiency ratio in SaaS -- it tells you whether each customer is worth more than it costs to acquire them. A healthy ratio is 3:1 or higher, meaning each dollar spent on acquisition returns three dollars in lifetime value.

LTV:CAC Ratio (Lifetime Value to Customer Acquisition Cost)

Definition

The LTV:CAC Ratio compares the Customer Lifetime Value (LTV) to the Customer Acquisition Cost (CAC). It shows whether each customer generates more value over their lifetime than it costs to acquire them, making it a core efficiency metric in SaaS.

How to Calculate LTV:CAC

Formula:

LTV:CAC = Customer Lifetime Value / Customer Acquisition Cost

Example:

If LTV = $90,000 and CAC = $30,000:

LTV:CAC = 90,000 / 30,000 = 3:1

What Good Looks Like

  • Below 1:1

You lose money on every customer. This is not sustainable.

  • 1:1 to 3:1

The model works but margins are thin. There is limited room to invest aggressively in growth.

  • 3:1 (Benchmark)

Common benchmark for a healthy SaaS business. Every $1 spent on acquisition returns $3 in lifetime value.

  • 5:1 or higher

Very efficient, but may signal underinvestment in growth. You could likely spend more on acquisition and grow faster while still being profitable.

Why LTV:CAC Matters

  • Guides growth investment

A ratio below ~3:1 suggests you should:

  • Increase LTV (better retention, expansion, upsell, cross-sell), or
  • Decrease CAC (more efficient marketing and sales)

before scaling spend.

  • Investor lens on sustainability
  • A company growing 100% YoY with 1.5:1 LTV:CAC is effectively buying unprofitable growth.
  • A company growing 50% YoY with 5:1 LTV:CAC has a more durable, capital-efficient model.

Segmented LTV:CAC

A single blended ratio can hide big differences:

  • Enterprise segment might be 6:1
  • SMB segment might be 1.5:1

To see where growth is truly efficient vs. value-destroying, calculate LTV:CAC by:

  • Customer segment (SMB, mid-market, enterprise)
  • Acquisition channel (paid search, outbound, partners, etc.)
  • Product or plan

This helps direct spend toward the highest-return segments and away from unprofitable ones.

RevOps Application

Revenue Operations (RevOps) enables accurate LTV:CAC by owning the data infrastructure and modeling across:

  • Marketing spend data (ads, events, content, programs)
  • Sales cost data (salaries, commissions, tools, enablement)
  • Customer retention & revenue data (churn, expansion, contraction, renewals)

RevOps connects these sources into a single, consistent model so leaders can:

  • Trust the LTV:CAC numbers
  • Compare performance by segment, channel, and product
  • Decide where to invest more and where to pull back to maximize efficient growth.

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