How to Calculate Your SaaS Churn Rate

How to Calculate Your SaaS Churn Rate


The concept of churn is one of the most important metrics to understand for Software as a Service (SaaS) businesses, directly impacting the company’s sustainability and growth. In its simplest form, the churn rate represents the percentage of subscribers to a service who discontinue their subscriptions within a given period. For a SaaS business, it’s the rate at which customers cease using the company’s software service over time. 

Understanding and closely monitoring your SaaS churn rate is critical as it clearly indicates your business’s health. It offers valuable insights into customer satisfaction, the effectiveness of your customer retention strategies, and the overall appeal of your product or service. A high churn rate is a warning sign that warrants immediate attention and corrective action, implying your product is losing its grip on its user base.

In the competitive SaaS market, where the cost of acquiring a new customer is significantly higher than retaining an existing one, managing and reducing the churn rate can dramatically impact the company’s bottom line, growth trajectory, and long-term success. Thus, calculating and understanding your SaaS churn rate is not optional but a business imperative. 

Understanding Churn Rate in a SaaS Context

The churn rate, often referred to as the rate of attrition, is a business metric that calculates the number of customers who leave a product over a given period, divided by the remaining number of customers. It’s a measure of business health, particularly in industries where customer acquisition is costly and customer lifetime value (CLTV) is high, such as the SaaS industry.

There are two primary types of churn rates that SaaS businesses often track:

  • Customer Churn: This metric represents the number of customers who have stopped using your SaaS product during a given period. It provides an overview of how many customers you’re retaining and how many you’re losing. 
  • Revenue Churn: This, also known as MRR (Monthly Recurring Revenue) or ARR (Annual Recurring Revenue) Churn, looks beyond just the number of customers lost. It considers the monthly or yearly recurring revenue lost due to churn, thereby giving you a more precise insight into the impact of customer churn on your business’s financial health. 

Understanding churn rate holds immense significance in recurring revenue models, such as SaaS, where the business’s growth and profitability rely heavily on customer retention. A high churn rate means you are losing customers and also implies that you are losing the recurring revenue associated with those customers. This means that your customer acquisition efforts need to outpace your churn just to break even. 

Regarding industry benchmarks, the average churn rate for SaaS companies can vary based on factors like company size, target market (B2B or B2C), and the specific niche within the SaaS industry. However, according to multiple industry reports, an acceptable annual churn rate is typically around 5-7% for customer churn and somewhat less for revenue churn. Anything higher indicates that a SaaS company may need to reassess its customer engagement and retention strategies to ensure sustainable growth.

Ultimately, understanding your churn rate, the type of churn you are experiencing, and how it compares to industry averages gives your SaaS business the necessary context to formulate data-driven strategies that enhance customer retention and business growth.

How to Calculate SaaS Churn Rate

Calculating your SaaS churn rate might seem complicated, but it is relatively straightforward once you understand the formula. Here is a step-by-step guide to help you calculate both customer and revenue churn rates.

Customer Churn Rate

  1. Choose the period you want to analyze. This could be monthly, quarterly, or annually, depending on your preference and business model.
  2. Identify the total number of customers you had at the beginning of that period (Start Customers). 
  3. Determine how many customers you lost during that period (Lost Customers). 
  4. Use the formula: 

customer churn rate formula

For example, if you started the month with 200 customers and lost 10, your customer churn rate would be (10 / 200) x 100 = 5%.

Revenue Churn Rate

  1. Again, choose the period you want to analyze.
  2. Identify the MRR or ARR at the start of the period (Start MRR/ARR).
  3. Determine the MRR or ARR lost from churned customers during the period (Lost MRR/ARR). 
  4. Use the formula:

revenue churn rate formula

For example, if your starting MRR was $20,000 and you lost $1,000 due to churn, your revenue churn rate would be (1000/20000) x 100 = 5%.

The above calculations give you what is typically called “gross churn.” However, in SaaS businesses, it is also common to calculate the “net churn,” which considers the new MRR/ARR from upselling or cross-selling to existing customers. 

Monthly Vs. Annual Churn Rate

A monthly churn rate provides a more immediate look at your business health, ideal for quickly identifying and addressing issues. Annual churn rate, however, smooths out monthly fluctuations to give a more long-term perspective of your business’s health. 

Involuntary Churn

Involuntary churn refers to customers who didn’t consciously choose to leave your service but were lost due to reasons like failed credit card charges or account closures. This type of churn can often be mitigated with proactive measures like payment reminders or retrying failed charges after a few days.

Understanding and accurately calculating churn rate is important for a SaaS business. It offers insights into customer retention and revenue sustainability, enabling businesses to develop strategies that minimize churn and boost growth. 

The Impact of Churn Rate on Monthly Recurring Revenue

Churn rate and Monthly Recurring Revenue (MRR) are intrinsically linked metrics in a SaaS business. While MRR represents your company’s predictable revenue stream, the churn rate indicates how much of that revenue you are losing over a specific period. These metrics provide a comprehensive picture of your company’s financial health. 

A high churn rate can significantly impact your MRR, primarily in two ways:

  • Immediate Revenue Loss: When customers unsubscribe from your service, you immediately lose the recurring revenue they would have provided. This loss directly impacts your MRR and, over time, can significantly decline your company’s revenue stream. 
  • Future Revenue Loss: Churn affects your current MRR and potential future revenue. Every customer that churns represents a missed opportunity for upsells, cross-sells, and referrals, which are key components of growth in a SaaS business. 

On the other hand, reducing the churn rate can dramatically increase MRR. For instance, even a small reduction in churn can lead to substantial revenue growth over time. This happens because customers who stay longer contribute to your MRR, providing a reliable and increasing revenue stream. 

Furthermore, retained customers often present opportunities for expansion revenue, which is additional revenue from existing customers through upselling or cross-selling. Expansion revenue can offset any lost revenue due to churn, leading to positive MRR growth.

Therefore, investing in strategies to reduce the churn rate – like improving product quality, enhancing customer service, or implementing effective customer retention strategies – is crucial. It contributes to maintaining a healthy MRR and sets the stage for sustainable long-term growth for your SaaS business. 

Churn Rate and Customer Retention

In the SaaS industry, churn rate and customer retention are two sides of the same coin. While the churn rate measures the percentage of customers who stop using your product over a given period, the customer retention rate measures the percentage of customers who continue to use your product. A lower churn rate generally means a higher customer retention rate and vice versa. 

Customer retention is important for the health of a SaaS business because acquiring new customers is proven to be much more costly than retaining existing ones. Long-term customers are more likely to buy additional services (expansion MRR) and refer your product to others, further contributing to your company’s growth. 

Implementing effective customer retention strategies can significantly reduce your churn rate, with a few strategies to consider below:

  • Offer Exceptional Customer Service: Ensure your customer service team is well-trained and well-equipped to handle any issues. Customers who feel valued and cared for are more likely to stick around.
  • Focus on Customer Success: Help your customers achieve their goals with your product. This could involve providing educational resources, hosting webinars, or offering one-on-one coaching. The more success your customers have with your product, the less likely they are to churn. 
  • Regularly Request and Respond to Feedback: Regular feedback can help you understand your customers’ needs and address their concerns before they consider churning.
  • Implement a Customer Loyalty Program: Rewarding customers for their loyalty can encourage them to stay longer. Rewards could be in the form of discounts, early access to new features, or even free swag. 

Reducing the churn rate is not just about preventing customers from leaving, it is about creating an environment where customers want to stay. Investing in customer retention is a surefire way to lower your churn rate, increase customer lifetime value, and enhance overall business performance. 

Churn Rate’s Impact on Customer Acquisition

Customer Acquisition Cost (CAC) is a significant metric for any SaaS business, representing the average expense incurred to acquire a new customer. This includes the cost of marketing and sales efforts divided by the number of new customers gained in a specific period. 

Churn rate and CAC have an indirect relationship in the sense that a high churn rate can lead to increased pressure on acquiring new customers, thus escalating the CAC. If a significant number of customers are leaving (high churn rate), it necessitates more spending on marketing and sales efforts to replace those customers, leading to a higher CAC.

Reducing the churn rate, on the other hand, can have a positive effect on CAC. When fewer customers leave, there is less pressure to replace them, and therefore the company can spend less on acquiring new customers, leading to a lower CAC. 

Moreover, high churn rates can be an indicator of dissatisfaction among customers. This dissatisfaction could harm the company’s reputation, making new customer acquisition even more challenging and expensive. 

Therefore, efforts to reduce churn have a dual benefit: improving customer retention (thus boosting revenue from existing customers) and lowering CAC (thus improving the company’s overall profitability). This reinforces the importance of understanding and managing churn rates in a SaaS business. 


Understanding and accurately calculating the churn rate is crucial for the growth and sustainability of any SaaS business. It indicates customer satisfaction, product-market fit, and the efficacy of your customer retention strategies. By monitoring and analyzing churn rates, businesses can derive valuable insights into their weaknesses and capitalize on opportunities to enhance their service, retain more customers, and improve their bottom line. Leveraging this knowledge, strategic decisions can be made that decrease churn rates and positively impact other facets of the business, such as customer acquisition costs and monthly recurring revenue. 


Frequently Asked Questions (FAQs)


What is the churn rate for SaaS?

Churn rate for SaaS refers to the percentage of subscribers to a service who discontinue their subscription within a given period. It is a critical metric for SaaS businesses as it directly impacts their recurring revenue.

How to calculate the churn rate?

Churn rate can be calculated by dividing the number of customers lost during a specific period by the number of customers you had at the start of that period. Multiply the result by 100 to get the churn rate percentage 

What is churn rate in software?

In the context of software, especially SaaS, churn rate refers to the proportion of contractual customers or subscribers who leave the software during a given period. It signifies the loss of clients or the decrease in customer usage, both of which can impact revenue and growth.

For more articles and important calculations here are more blog posts to check out:

How to Calculate the SaaS Quick Ratio
How to Calculate Gross Dollar Retention
Understanding the SaaS Net Promoter Score

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