# CAC SaaS: A guide for businesses

**Customer acquisition cost (CAC)** is a [software-as-a-service (SaaS) metric](/content/resources/more/essential-saas-metrics/index.html) that provides insight into the costs associated with converting a prospect into a paying customer. Understanding how to calculate and optimize CAC is crucial for SaaS businesses aiming to grow sustainably.

## What’s in this article?
- What is CAC in SaaS?
- How to calculate CAC for SaaS companies
- What’s the average customer acquisition cost for B2B vs. B2C SaaS companies?
- How can you lower CAC in SaaS?
- What’s a good LTV/CAC ratio in SaaS?

## What is CAC in SaaS?
Customer acquisition cost is the total cost incurred to acquire a new customer. It's essential for SaaS companies to know this number as it affects profitability and growth. High CAC in relation to a customer's lifetime value (LTV) can jeopardize business sustainability. A low CAC enables businesses to reinvest in product development and marketing.

## How to calculate CAC for SaaS companies
To find your business's CAC:

_CAC = Total Sales and Marketing Costs ÷ Number of New Customers Acquired_

### Steps to calculate CAC:
1. **Select a time frame.** Common intervals include monthly, quarterly, or annually.
2. **Sum your marketing expenses** during that period, which may include:
   - Advertising (search, social media, etc.)
   - Content production costs
   - Salaries for sales and marketing teams
   - Tools specific for customer acquisition
3. **Count the number of new paying customers** acquired in that timeframe.
4. **Divide the total marketing costs** by the number of new customers to calculate CAC.

For example, if you spent $50,000 on marketing and acquired 250 new customers, your CAC would be:

_$50,000 ÷ 250 = $200_

## What’s the average customer acquisition cost for B2B vs. B2C SaaS companies?
B2B SaaS typically sees a higher CAC than B2C due to longer sales cycles and the need for more personalized sales strategies. For B2B, CAC can range from $300 to $5,000 depending on sales complexity. In comparison, B2C companies often have a lower CAC, around $64 on average.

## How can you lower CAC in SaaS?
Improving your customer acquisition strategy can enhance efficiency across the following areas:

### Key strategies to lower CAC:
- **Optimize your acquisition mix.** Focus resources on the most effective channels.
- **Improve conversion rates.** Enhance landing pages and streamline sign-up processes.
- **Build referral and viral loops.** Create incentives for existing customers to refer new ones.
- **Increase LTV.** Boost customer retention through better onboarding and upsells.
- **Automate and scale effective strategies.** Use tools for marketing automation and analytics.
- **Keep testing and refining.** Continuously evaluate and improve your acquisition channels.

## What’s a good LTV/CAC ratio in SaaS?
Generally, a **3:1 LTV/CAC ratio** is considered healthy. This means for every $1 spent on acquiring a customer, the return should be $3. Different ratios indicate varying levels of sustainability:
- 1:1 = breaking even
- 2:1 = starting to become sustainable
- 3:1 = stable growth
- Above 4:1 = highly efficient but may under-invest in acquisition

Understanding and optimizing both CAC and LTV is vital for sustainable growth in a SaaS business.