LTV to CAC Ratio Calculator

Why the LTV:CAC Ratio Matters

The Customer Lifetime Value to Customer Acquisition Cost Ratio (LTV:CAC) answers a harder question than most dashboards show: will this specific customer cohort generate enough gross profit to justify what it actually cost to acquire?

The ratio gets misleading when you blend expensive subscribers with cheaper one-time buyers, assume early subscription retention will hold forever, or ignore discounts that inflate order count while compressing margin. Model subscriber CAC, one-time-buyer CAC, AOV, gross margin, and six-month cohort behavior separately before calling a funnel scalable.

Pair this with the Unit Economics Hub, the CAC Payback Period Calculator to check cash timing, the Retention & Email Hub and Email Retention Diagnostic to improve repeat purchase behavior, and the DTC Playbook to connect acquisition, frequency, and order value.

Understanding the Benchmarks

• < 1:1 (Loss Making): You spend more to acquire a customer than they will ever pay you back. This is unsustainable unless you have immense capital and a plan to drastically increase monetization later.
• 1:1 (Break Even): You recover your acquisition costs, but there's no margin left over to pay for overhead, engineering, or team salaries.
• 2:1 (Okay): Profitable, but you may be sensitive to slight increases in marketing costs or customer churn.
• 3:1 (Strong, If Real): This is healthy only when CAC is cohort-specific, LTV is margin-adjusted, and the payback window fits your cash cycle. A blended 3:1 can still hide an unprofitable subscription funnel.
• > 5:1 (Investigate First): This can mean under-investment, but it can also mean your attribution is missing costs, your cohort is too small, or your LTV horizon is too optimistic. Verify before scaling spend.