LTV:CAC vs CAC Payback — which efficiency metric tells you what?

When each matters

LTV:CAC is the long-run profitability test. CAC payback is the cash-flow test (how fast you recover the spend before the next acquisition). A company with great LTV:CAC but long payback is profitable but cash-constrained — needs more growth capital. Both must clear thresholds for healthy unit economics.

Related

• customer lifetime value
• customer acquisition cost
• customer lifetime months

Other concept comparisons

• NRR vs GRR — Side-by-side definitional comparison of Net Revenue Retention (NRR) and Gross Retention Rate (GRR). Same starting cohort, two different lenses.
• NRR vs Churn Rate — NRR and churn rate measure related but distinct things. NRR is forward-looking and includes growth; churn is backward-looking and isolates loss.
• Consumption vs Subscription Pricing — Consumption pricing (pay-as-you-go) and subscription pricing (fixed seats/tier) shape retention metrics differently. Understand the mechanics before you switch.
• Annual vs Multi-Year Contracts — Multi-year contracts lock revenue but hide churn. Annual contracts surface churn faster but give less forward visibility. Each fits a different go-to-market motion.
• Enterprise vs SMB Retention — Enterprise NRR is typically 10-25 percentage points HIGHER than SMB. Understanding the gap tells you where to invest CS resources.
• Account-Named vs Pooled CSM — Account-named CSMs (1:N specific accounts) vs pooled CSMs (queue-based). The choice depends on ACV, complexity, and retention goals.