Customer Lifetime Value (Advanced)

Simple LTV = ARPU x Gross Margin x (1/Churn Rate). Example: $100/mo ARPU x 75% gross margin x (1/0.05 monthly churn) = $1,500 LTV. More accurate models use cohort retention curves and discount future cash flows. Always use gross margin, not revenue. Cohort-based CLV tracks actual revenue and retention per acquisition group over 12-36 months, while predictive CLV uses statistical models to forecast future behavior from early signals like first-order size and repeat purchase timing.

Absolute LTV matters less than the LTV:CAC ratio. A healthy benchmark is 3:1, meaning customers should be worth at least three times what it costs to acquire them. Below 3:1 suggests overspending on acquisition or undermonetizing customers. Above 5:1 often signals underinvestment in growth channels. Top-performing SaaS companies hit 5-8:1. CAC payback under 12 months is equally important since it measures capital efficiency, not just eventual profitability.

Reduce churn (the biggest lever - 1% churn reduction can 30%+ LTV), expand existing accounts (upsell, cross-sell), increase pricing, improve gross margin (reduce COGS), and extend customer lifespan through better product-market fit and customer success investment.

Always gross margin. Revenue overstates LTV because it ignores cost to serve customers (hosting, support, payment processing). For a SaaS with 75% gross margin, revenue-based LTV is 33% inflated. Investors and finance teams universally use gross-margin LTV.