ConversionMath

Blended CAC Calculator

Calculate blended customer acquisition cost across all your marketing and sales efforts — paid, organic, and everything in between — to see your true cost per new customer.

Enter one combined total: sales costs plus marketing costs for the period.

Your Blended CAC

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Formula Blended CAC = (Total Sales + Marketing Spend) ÷ New Customers

How to use this calculator

Enter your total sales and marketing spend for the period (including salaries, tools, ad spend, content, and agencies) and the number of new customers acquired in that period. The calculator returns your blended CAC. Use the "Calculate" selector to solve for total spend or customer volume if you're planning budget or forecasting.

What is Blended CAC?

Blended CAC (customer acquisition cost) measures the total cost to acquire a new customer across all channels — paid and organic combined. It's calculated by dividing all sales and marketing costs in a period by the number of new customers acquired in that same period. Blended CAC is the CAC number that founders, CFOs, and investors care about most because it reflects the true cost of growth for the business, not just the cost of paid ads. It's typically compared against LTV to evaluate the long-term viability of the business model.

When to use this calculator

  • Evaluating overall marketing efficiency at the business level
  • Calculating LTV:CAC ratio to assess business model health
  • Budgeting and forecasting customer acquisition costs
  • Reporting to investors, board members, or leadership
  • Comparing efficiency across quarters or years

Frequently asked questions

What is a good Blended CAC?
A "good" CAC depends entirely on your customer lifetime value. The standard benchmark is an LTV:CAC ratio of at least 3:1 — meaning your LTV should be three times your CAC. If your LTV is $900, a CAC of $300 is healthy; a CAC of $600 is concerning. Industry benchmarks vary widely: B2C ecommerce CACs might be $30–100, B2B SaaS CACs often $200–1,000, and enterprise CACs can reach tens of thousands.

How is Blended CAC calculated?
Blended CAC = (Total Sales + Marketing Spend) ÷ (New Customers Acquired) in the same period. If you spent $50,000 on all sales and marketing in a quarter and acquired 200 new customers, your blended CAC is $250.

What costs should I include in Blended CAC?
All sales and marketing costs in the period: ad spend, sales team salaries and commissions, marketing team salaries, tools and software (CRM, marketing automation, analytics), agency fees, content production, events, and any other spend directly supporting acquisition. The key is consistency — whatever you include, include the same things every period so the trend line is meaningful.

What's the difference between Blended CAC and Paid CAC?
Blended CAC includes all acquisition costs (paid + organic + salaries + tools). Paid CAC only includes paid ad spend divided by customers acquired from paid channels. Blended CAC is the truer measure of business-level efficiency; Paid CAC is more useful for evaluating the performance of paid channels specifically.

What's the difference between CAC and CPA?
CPA (cost per acquisition) typically refers to the cost of a single conversion event within an ad platform — usually just ad spend ÷ conversions. CAC is a broader business metric that includes all sales and marketing costs, not just ad spend. CPA is what you optimize campaigns toward; CAC is what you report to the board.

Should I calculate CAC monthly, quarterly, or annually?
Quarterly is a good default for most businesses — monthly has too much noise, annually hides short-term issues. For fast-moving startups or businesses with long sales cycles, adjust accordingly. Some teams track CAC on a trailing-12-months basis to smooth out seasonality.

How do I lower my Blended CAC?
The highest-leverage moves are usually improving conversion rates across the funnel, investing in organic channels that compound over time (content, SEO, community, referrals), tightening targeting in paid channels, improving sales efficiency, and reducing waste in underperforming channels. Organic channels tend to lower CAC meaningfully but take time to pay off.

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