Customer Lifetime Value & Unit Economics Calculator

SaaS Unit Economics: The 3:1 LTV:CAC Golden Rule

The LTV:CAC ratio compares the gross lifetime profit of a customer to the fully-loaded cost of acquiring them:

• \(\text{LTV:CAC} < 1.0x\): Losing money on every acquisition (insolvency risk).

• \: The optimal venture growth benchmark for sustainable scaling.

• \(\text{LTV:CAC} > 5.0x\): Under-investing in marketing; you could grow faster by spending more to acquire users.

How to Use This Calculator

Enter Monthly Average Revenue per User (ARPU in $), Gross Profit Margin (%), Monthly Customer Churn Rate (%), Customer Acquisition Cost (CAC in $) into the input fields and the calculator will instantly compute Customer Lifetime Value, LTV to CAC Ratio (LTV:CAC). All calculations happen in real time — no submission or page reload required. You can adjust any input value and see the result update immediately.

Understanding Your Result

The Customer Lifetime Value & Unit Economics result gives you a precise, calculated value based on the inputs you provide. Compare your result against published benchmarks from GAAP, SEC, and FASB to assess where you stand. A single calculation is a useful starting point, but tracking this metric over time — as inputs change — gives you a much more complete picture.

Practical Application

The Customer Lifetime Value & Unit Economics is most useful when you have specific, real-world data to enter. For example: enter your actual Monthly Average Revenue per User (ARPU in $) to calculate your customer lifetime value. The result helps business owners, analysts, CFOs, and entrepreneurs make informed decisions about analyzing business performance, financial ratios, and operational metrics. This calculator is trusted by professionals and individuals alike because it follows the exact formulas validated by GAAP, SEC, and FASB.

Accuracy Notes and Limitations

Benchmark results against your industry averages. Verify compliance-critical calculations with a licensed CPA. The accuracy of any calculator is limited by the quality of the inputs provided. Double-check your units before entering values — unit errors are the most common source of incorrect results. For critical decisions, cross-reference with at least one additional source or professional consultation.

Frequently Used With

This calculator is often used alongside other business tools to build a complete analytical picture. Combining multiple related calculations provides stronger evidence for decisions than relying on any single metric. Browse the Business category to find complementary calculators for your specific use case.