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.

How to Check It

  1. Reconcile the spend total with accounts: ad invoices, agency fees, tools, and marketing salaries for the same period.
  2. Count new customers from the CRM or billing system, not from ad platform conversions.
  3. Calculate paid CAC alongside blended CAC every month; a widening gap shows growing reliance on paid channels.

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.