CAC (Customer Acquisition Cost) is the total cost to acquire one new customer, including all sales and marketing expenses divided by the number of new customers acquired in that period.

How is CAC calculated?

CAC = Total Sales and Marketing Spend / New Customers Acquired. For example, $16,500 in S&M spend with 28 new customers gives CAC = $589.

What should be included in CAC?

Include all sales and marketing costs: ad spend, sales team salaries, commissions, marketing software, content production, events, and PR. Only counting ad spend understates CAC and makes unit economics look better than they are.

What is a good CAC for SaaS?

There is no universal good CAC. What matters is the LTV:CAC ratio (aim for 3:1 or higher) and CAC payback period (aim for under 12 months). A $500 CAC is great if ARPU is $500/month but terrible if ARPU is $10/month.

What Is CAC? Customer Acquisition Cost Explained

CAC (Customer Acquisition Cost) is the total cost to acquire one new customer. It includes every dollar spent on sales and marketing — ad spend, salaries, commissions, tools, content, and events — divided by the number of new customers acquired. CAC is half of the most important unit economics equation in SaaS: the LTV:CAC ratio.

Quick Answer

CAC = Total Sales & Marketing Spend ÷ New Customers Acquired

Example: $16,500 spend ÷ 28 new customers = $589 CAC

Why CAC Matters

CAC tells you how efficiently you turn dollars into customers. A high CAC is not inherently bad — if each customer generates enough lifetime value to justify it. But CAC without context is meaningless; always evaluate it alongside LTV and CAC payback period. A $2,000 CAC is excellent for an enterprise SaaS with $5,000/month ARPU but catastrophic for a self-serve tool with $20/month ARPU.

How to Calculate CAC

CAC Formula

CAC = Total Sales & Marketing Spend ÷ New Customers Acquired

Example: In one month you spent $10,000 on ads, $4,500 on sales team salaries, and $2,000 on marketing tools and content. Total S&M spend = $16,500. You acquired 28 new customers. CAC = $16,500 ÷ 28 = $589.

What to Include in CAC

Include in CAC

Paid advertising spend (Google Ads, LinkedIn, Facebook, etc.)
Sales team salaries, commissions, and bonuses
Marketing team salaries
Marketing and sales software tools (CRM, automation, analytics)
Content production costs (writers, designers, video production)
Events, conferences, and sponsorships
PR and agency fees

The most common mistake is only counting ad spend. This dramatically understates CAC and makes your unit economics look healthier than they are. Include the full cost of your revenue-generating teams and tools.

CAC by Channel

A blended CAC across all channels can hide wide variation. Track CAC per acquisition channel to identify which efforts are efficient and which are burning cash:

Channel	Typical CAC	Best For
Organic / SEO	$50–$200	Long-term, sustainable
Paid ads (SMB)	$100–$500	Scalable, fast results
Outbound sales	$1,000–$5,000	Enterprise, high ACV
Referrals	$50–$150	High intent, low cost

How to Reduce CAC

Invest in organic growth. SEO, content marketing, and community building have the lowest long-term CAC. They take time but compound over years.
Build a referral program. Incentivize existing customers to refer new ones. Referred customers have lower CAC and higher retention.
Improve conversion rates. If your trial-to-paid conversion rate goes from 2% to 4%, your CAC halves for the same ad spend.
Focus on efficient channels. Reallocate spend from high-CAC channels to lower-CAC ones. Kill channels where LTV:CAC is below 2:1.
Product-led growth. A self-serve free trial or freemium model lets users convert without sales involvement, dramatically lowering CAC.

Common CAC Mistakes

Common Mistake

Only counting ad spend and excluding sales team salaries, commissions, and overhead. This understates CAC by 50% or more and makes your LTV:CAC ratio look much healthier than it is.

Common Mistake

Not tracking CAC by channel. A blended 3:1 LTV:CAC might hide one channel at 6:1 and another at 1:1. Track per-channel CAC to allocate spend efficiently.

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