Definition

Blended CAC is total sales and marketing spend across all channels divided by new customers acquired in a period, blending paid, organic, and offline efforts into one acquisition efficiency number.

Detailed Explanation

Formula: Blended CAC = Total S&M Spend ÷ New Customers. Contrasts with paid CAC (ads only) and organic CAC (often inferred as near-zero marginal cost).

Investors use blended CAC vs LTV ratio; operators use paid CAC for channel scaling decisions.

MER (total revenue / total marketing) complements blended CAC for top-line efficiency.

Nepal Context

Nepali startups pitching banks often report blended CAC hiding high paid dependence — break out paid vs organic for diligence.

Referral-heavy cooperatives may show artificially low blended CAC — validate quality of referred customers.

Practical Examples

  1. Beginner: Sum all marketing invoices Q1, divide by new customers from CRM.

  2. Intermediate: Chart blended vs paid CAC monthly; flag when paid >70% of spend but organic flat.

  3. Advanced: Cohort LTV/CAC by acquisition channel in warehouse model for board reporting.

Key Takeaways

  • Blended CAC summarizes overall acquisition efficiency.
  • Always pair with paid CAC for channel decisions.
  • LTV:CAC ratio guides sustainable growth.
  • Include all marketing payroll and tools in numerator.
  • Nepal investor conversations require transparent splits.

Common Mistakes

  1. Excluding founder marketing time from S&M.
  2. Using leads instead of customers in denominator.
  3. Celebrating low blended CAC from one viral organic month.