What Is Customer Acquisition Cost?

Customer Acquisition Cost (CAC) is the total cost of acquiring a new customer — all marketing and sales expenses divided by the number of new customers gained in the same period. If you spent $5,000 on marketing last month and acquired 50 new customers, your CAC is $100. CAC is one of the most fundamental metrics in any business, particularly in SaaS, e-commerce, and subscription businesses where the relationship between acquisition cost and customer value determines profitability.

What to Include in CAC Calculation

CAC should include all costs directly related to acquiring new customers. Marketing costs include ad spend, content creation, SEO tools, email marketing platforms, and event costs. Sales costs include sales team salaries and commissions, CRM software, sales tools, and outbound prospecting costs. Some businesses calculate marketing CAC (marketing spend only) and blended CAC (all marketing and sales) separately to understand where efficiency lies. For a clear picture of unit economics, use blended CAC.

The LTV:CAC Ratio

CAC alone is meaningless without context — it must be compared to the Customer Lifetime Value (LTV). The LTV:CAC ratio tells you how many dollars of value you generate for every dollar spent acquiring a customer. A ratio of 3:1 is the commonly cited healthy benchmark for SaaS businesses — for every dollar spent acquiring a customer, you generate three dollars in lifetime value. Below 1:1, you are losing money on every customer. Above 5:1, you are likely underinvesting in growth — money that could be spent on acquisition is sitting idle.

CAC Payback Period

The CAC payback period is the number of months it takes to recover the acquisition cost from a customer's revenue. If your CAC is $300 and a customer pays $50 per month, the payback period is 6 months. Shorter payback periods give you more capital to reinvest in growth. Most healthy SaaS businesses target a payback period under 12 months. Companies with payback periods above 18-24 months face cash flow challenges at scale.

How to Use Our Free CAC Calculator

Our free CAC calculator at cookiescursor.com calculates your total CAC, marketing-only CAC, and LTV:CAC ratio. Enter your marketing spend, sales spend, and new customers acquired. Optional LTV and monthly revenue inputs calculate the payback period. Currency selector supports 40+ currencies. No signup required.

Frequently Asked Questions

What is a good CAC for SaaS?
This varies enormously by price point and market. A $99/month SaaS tool might target a CAC under $300. An enterprise SaaS at $10,000/year might accept a CAC of $5,000-10,000. The LTV:CAC ratio matters more than the absolute CAC figure.

How often should I calculate CAC?
Monthly for fast-growing businesses, quarterly for stable businesses. Track trends over time — rising CAC is an early warning signal of marketing inefficiency.

Does organic traffic count toward CAC?
If you spend on SEO (content creation, tools, agency fees), those costs should be included in CAC calculations. Truly organic traffic with no associated spend reduces effective CAC.

How do I reduce CAC?
Improve conversion rates at each stage of your funnel, invest in high-ROI channels, increase referral programs, and improve product-market fit so word-of-mouth acquisition grows.

What is the difference between new customer CAC and total CAC?
New customer CAC uses only costs attributable to new customer acquisition. Total CAC includes retention and expansion marketing costs, producing a blended figure that is harder to use for growth planning.

Should I include product costs in CAC?
No. Product development, infrastructure, and support costs belong in other metrics like Cost of Goods Sold (COGS) and Customer Support Cost. CAC is purely acquisition cost.

Calculate Your CAC Now

Use our free CAC calculator to understand your customer acquisition economics. No signup required.