CAC (Customer Acquisition Cost)
CAC (Customer Acquisition Cost) is the cost of acquiring a single customer. This metric shows how much a business spends on marketing and sales to gain one paying user. CAC helps evaluate the effectiveness of advertising channels, campaigns, and the overall unit economics of a product.
What is CAC?
CAC is a metric that reflects how much it costs a company to acquire one new customer. The calculation includes all expenses related to marketing, advertising, sales, and sometimes the initial customer service touchpoints.
Example:
If a company spent 300,000 RUB on advertising and acquired 150 customers, the CAC would be 2,000 RUB.
CAC Calculation Formula
The classic formula is:
CAC = Total Acquisition Costs / Number of New Customers
Calculation Example:
- Marketing Expenses: 1,000,000 RUB
- Number of New Customers: 400
CAC = 1,000,000 / 400 = 2,500 RUB
What is Included in CAC?
Costs typically include:
- Advertising spend (Google Ads, Yandex.Direct, social media).
- Salaries for marketing and sales teams.
- Service costs: CRM, email marketing platforms, analytics tools.
- Agency commissions.
- Content creation costs.
- Lead generation expenses.
- Call center costs.
Sometimes, expenses for customer activation, trial periods, or initial support are also included.
Why Calculate CAC?
CAC helps understand:
- Whether the advertising budget is justified.
- Which marketing channels are most effective.
- The sustainability of the business model.
- How much can be spent on acquisition.
- If a customer will be profitable in the future (in relation to LTV – Lifetime Value).
If the CAC is too high, the business loses profitability.
The Relationship Between CAC and LTV
The primary rule of unit economics is: LTV must be greater than CAC.
LTV > CAC
An ideal ratio for sustainable growth is:
LTV ≥ 3 × CAC
This means a customer should bring in at least three times more revenue than it cost to acquire them.
What Increases CAC?
- High market competition.
- Low website conversion rates.
- Ineffective advertising.
- Poorly targeted audiences.
- Inefficient sales team performance.
- Lack of marketing attribution analytics.
- Errors in campaign setup.
How to Reduce CAC
- Optimize Advertising Campaigns: Remove underperforming platforms, improve targeting.
- Improve Website Conversion Rate (CRO): Enhance UX, speed up loading times, simplify forms.
- Enhance Sales Team Efficiency: Provide training, ensure quick responses, and use effective scripts.
- Implement Marketing Attribution: Use analytics to see the precise value of each channel.
- Utilize Retargeting: It is often cheaper than acquiring new “cold” traffic.
- Nurture Leads: Use email marketing, chatbots, and automated funnels to activate users after initial contact (lead magnets).
- Strengthen Brand: Strong brands typically have lower acquisition costs.
Important Considerations
- CAC should be calculated for each channel separately to identify which ones are truly profitable.
- CAC depends heavily on lead quality. Sometimes cheap traffic fails to convert into sales.
- CAC changes over time. Factors like increased competition, seasonality, and algorithm updates all have an impact.
Conclusion
CAC (Customer Acquisition Cost) is a key unit economics metric that shows the cost of acquiring a single customer. It is essential for managing marketing budgets, optimizing channels, and improving business profitability.
