Customer success metrics tell you whether your customers are actually achieving their goals with your product. These objective, quantitative measures reveal pain points, validate strategies, and guide improvements that reduce churn and increase lifetime value.
In our experience building EmailAnalytics, we’ve seen how tracking the right metrics transforms customer success from guesswork into a data-driven discipline. Companies that monitor these KPIs consistently catch problems early and retain more customers.
Quick Answer: The most important customer success metrics are churn rate, net promoter score (NPS), customer satisfaction score (CSAT), customer lifetime value (LTV), net dollar retention (NDR), and average response time. Track these at regular intervals to identify trends, troubleshoot problems, and measure the impact of your customer success initiatives.
Key Terms
Customer success: A measure of how effectively customers use your products and services to achieve their goals, correlating with retention and recurring revenue.
Churn rate: The percentage of customers who cancel subscriptions or stop using your product within a given timeframe.
Net promoter score (NPS): A metric capturing how likely customers are to recommend your product, calculated by subtracting detractor percentage from promoter percentage.
Customer lifetime value (LTV): Total revenue expected from a customer throughout their entire relationship with your company.
Net dollar retention (NDR): Percentage of revenue retained from existing customers, including expansions minus downgrades and churn.
What Is Customer Success?
Customer success measures how effectively customers use your products to achieve their goals. High customer success correlates with higher retention, more recurring revenue, and lower acquisition costs.
I’ve written about customer success before, so I’ll be brief here. Customer success measures how effectively your customers are able to use your products and services to achieve their goals.
If customers can learn your product, use it seamlessly, and accomplish their objectives, your customer success rate will be high. If customers find your product difficult to learn, difficult to use, or ill-suited to their objectives, your customer success rate will be low.
Higher customer success correlates with higher customer retention, more recurring revenue, and other positive factors that lead to a more successful business. That’s why it pays to keep your finger on the pulse—by analyzing objective metrics, you can determine pain points, analyze strategy effectiveness, and take better actions to improve.
What Are Customer Success Metrics and KPIs?
Customer success metrics are objective, quantitative data points that reveal how well your customer success strategy is working and what your customers’ average experiences look like.
Customer success metrics and KPIs are objective, mostly quantitative pieces of data that tell you something about your current customer success strategy and your customers’ average experiences.
Ideally, you’ll track these metrics at regular intervals so you can monitor how they evolve with your changing strategies and product development. Poor or disappointing metrics should motivate troubleshooting and improvements. Good metrics are evidence that your tactics are working—and should motivate you to push even further.
What Revenue-Based Customer Success Metrics Should You Track?
Track monthly recurring revenue (MRR), average revenue per user (ARPU), net dollar retention (NDR), and customer lifetime value (LTV) to understand the financial impact of customer success.
Monthly Recurring Revenue (MRR)
MRR measures how much money you’re generating with your product on a recurring basis. It’s an indirect measure of customer success—healthy MRR growth indicates customers are finding value.
Formula: MRR = Monthly Average Revenue per User (ARPU) × Total Number of Monthly Users
Average Revenue Per User (ARPU)
ARPU helps you contextualize retention rates and understand the average value per user. It reveals how important customer success is for each individual account.
Formula: ARPU = Total Revenue ÷ Total Number of Users
Net Dollar Retention (NDR)
NDR measures the percentage of revenue retained from existing customers within a given period, including expansions minus downgrades and churn. It shows how much revenue comes from customers who are successful with your product.
Formula: NDR = (Starting MRR + Expansion – Downgrades – Churn) ÷ Starting MRR × 100
Customer Lifetime Value (LTV)
LTV is the ultimate measure of customer success—how much revenue can each customer bring to your organization? High customer success and satisfaction increase LTV considerably, making every new customer more valuable.
Formula: LTV = (Average Purchase Value × Average Purchase Frequency) × Average Customer Lifespan
What Retention Metrics Indicate Customer Success?
Track churn rate, renewal rate, and free trial conversion rate to understand whether customers are staying with your product and finding enough value to continue paying.
Customer Churn Rate
Customer churn rate measures customers who cancel subscriptions or stop using your products within a given timeframe. High churn is a clear sign something is wrong with your customer success strategy—customers aren’t getting what they need.
Formula: Churn Rate (%) = Total Churned Customers ÷ Total Customers
Renewal Rate
Renewal rate measures how likely customers are to renew subscriptions after a given interval. High renewal rates are a positive sign that customers are finding success with your product.
Formula: Renewal Rate (%) = (Customers Who Renew ÷ Customers Up for Renewal) × 100
Free Trial Conversion Rate
Strong calls to action can get customers to sign up for free trials, but how many convert to paid? Low conversion rates indicate users are having poor experiences during the trial period.
Formula: Free Trial Conversion Rate = Users Who Converted ÷ Users Who Started Trial
How Do You Measure Customer Satisfaction and Sentiment?
Use net promoter score (NPS), customer satisfaction score (CSAT), and customer effort score (CES) to understand how customers feel about your product and their experiences.
Net Promoter Score (NPS)
Revenue metrics can’t tell you exactly how customers feel. Net promoter score captures how likely a customer is to recommend your product. High NPS means happy customers who would recommend you; low NPS signals problems with your customer success strategy.
Formula: NPS = Percentage of Promoters – Percentage of Detractors
Customer Satisfaction Score (CSAT)
CSAT reveals how satisfied customers are when using your product. Typically measured through surveys asking customers to rate satisfaction on a scale of 1-5 or 1-10.
Formula: CSAT = Average of All Customer Satisfaction Scores (typically 1-10 scale)
Customer Effort Score (CES)
CES estimates how much work customers must do to achieve outcomes—for example, how long they need to study tutorials before using the product competently. Lower effort scores mean smoother experiences and more successful customers.
Formula: CES = Total Positive Responses ÷ Total Responses
What Support Metrics Impact Customer Success?
Track average response time, first response time, and resolution time. Fast responses correlate with higher satisfaction—35-50% of sales go to the first-responding vendor.
Average Response Time
Average response time measures how long your team takes to reply to customer inquiries. This is also a critical sales KPI—faster responses correlate with higher close rates and customer satisfaction.
Average First Response Time
First response time measures only the initial contact in a thread or ticket. This metric is especially important because first impressions heavily influence customer perception.
Average Resolution Time
Resolution time tracks how long it takes to fully resolve a ticket after it’s created. While first response time affects perception, resolution time affects actual customer outcomes.
Formula: RT = Total Sum of Response Times ÷ Total Number of Responses
If your team uses email to communicate with customers, average response time and first response time can be measured in EmailAnalytics. For resolution time, your customer service CRM will likely have this metric available.
What Usage Metrics Reveal About Customer Success?
Track average session duration and recurring active users (DAU/WAU/MAU) to understand engagement levels and product adoption patterns.
Average Session Duration
Session duration tells you how long customers use your product. Longer sessions can indicate engagement and continued value—but in some contexts, long sessions might mean customers can’t find what they’re looking for. Always consider context.
Formula: Average Session Duration = Total Seconds of All Sessions ÷ Total Number of Sessions
Recurring Active Users (DAU/WAU/MAU)
Daily, weekly, and monthly active users indicate the size and health of your customer base. Major swings in either direction signal significant changes in customer success.
Formula: Recurring Active Users = Users Who Accessed Within Timeframe ÷ Total Paying Users
What Cost Metrics Should You Monitor?
Track customer acquisition cost (CAC) and customer retention cost (CRC) to understand the economics of your customer success efforts and justify investments.
Customer Acquisition Cost (CAC)
CAC tells you how much it costs to acquire a new customer through lead generation, sales, and marketing. While CAC doesn’t measure customer success directly, it reveals how valuable retention is—the higher your CAC, the more important it is to keep existing customers successful.
Formula: CAC = Total Acquisition Expenses ÷ Number of New Customers
Customer Retention Cost (CRC)
CRC measures how much money and effort it takes to keep existing users. Higher customer success rates generally lead to lower retention costs, since product value naturally keeps customers around.
Formula: CRC = Total Retention Expenses ÷ Total Number of Customers
Why Is Qualitative Customer Feedback Important?
Quantitative metrics show what’s happening; qualitative feedback explains why. Open-ended surveys reveal customer motivations that numbers alone can’t capture.
Most metrics on this list are quantitative, making data calculable and objective. While this is useful for statistical analysis, it doesn’t always tell the full picture.
That’s why it’s important to track qualitative customer feedback through open-ended surveys. If churn is high or satisfaction is low, open customer comments may reveal the main motivations for detraction that numbers can’t explain.
What Are the Best Tools for Measuring Customer Success Metrics?
Top tools include EmailAnalytics for response time tracking, Zendesk for comprehensive support metrics, ChurnZero for retention, Gainsight for customer health scoring, and Hotjar for user behavior analysis.
EmailAnalytics integrates with Gmail and Outlook to track email-related customer success metrics including average response time, conversation thread length, and more. Ideal for teams that handle customer success through email.
Zendesk provides comprehensive customer support functionality including onboarding, service, and ticketing. Track most KPIs in this guide while resolving customer issues faster through its intuitive system.
ChurnZero improves communication across customer service and product teams with automation tools to simplify your approach and measure vital retention metrics.
Pendo facilitates customer self-help through in-app guides, walkthroughs, and tutorials. Ideal for improving CSAT and first contact resolution rate.
Gainsight measures everything from CSAT to NPS, providing a customer health-centric single source of truth for product adoption, churn prevention, and word-of-mouth growth.
Intercom handles onboarding to ticket resolution with live chat and chatbot support, plus features to track and analyze customer success metrics.
Zoho Desk manages customer interactions across all mediums, automates portions of customer service, and generates reports on important metrics.
Hotjar records real user interactions so you can see exactly how customers use your product. Great for finding usability issues. They also offer an NPS survey tool.
Five9 is an AI-powered cloud contact center ideal for managing high-volume customer interactions and monitoring success metrics.
For more on measurement approaches, see our guide to customer service analytics.
Frequently Asked Questions
What is the most important customer success metric?
There’s no single most important metric—it depends on your business model and goals. For SaaS companies, net dollar retention (NDR) and churn rate are often primary indicators. For customer service teams, response time and CSAT matter most. Track a balanced mix of revenue, retention, and satisfaction metrics for a complete picture.
How often should you measure customer success metrics?
Operational metrics like response time should be monitored daily or weekly. Strategic metrics like NPS, churn rate, and LTV are typically measured monthly or quarterly. The key is consistency—tracking at regular intervals lets you identify trends and measure the impact of changes to your strategy.
What is a good churn rate for SaaS companies?
For B2B SaaS, annual churn rates of 5-7% are considered healthy; monthly churn should be under 1%. B2C SaaS typically sees higher churn (5-7% monthly is common). Enterprise SaaS with longer contracts often achieves lower churn. Compare against industry benchmarks and focus on continuous improvement rather than absolute numbers.
What’s the difference between customer success and customer service?
Customer service is reactive—responding to problems and inquiries when customers reach out. Customer success is proactive—ensuring customers achieve their goals with your product before problems arise. Customer service fixes issues; customer success prevents them. Both contribute to overall customer satisfaction and retention.
How do you calculate customer lifetime value?
The basic formula is: LTV = (Average Purchase Value × Average Purchase Frequency) × Average Customer Lifespan. For subscription businesses, a simpler formula is: LTV = ARPU ÷ Churn Rate. For example, if your average revenue per user is $100/month and monthly churn is 5%, LTV = $100 ÷ 0.05 = $2,000.
What is a good NPS score?
NPS ranges from -100 to +100. A score above 0 means you have more promoters than detractors. Scores of 30-50 are considered good, 50-70 are excellent, and above 70 is world-class. However, NPS varies significantly by industry—compare against competitors in your specific sector rather than absolute benchmarks.
How do you improve customer success metrics?
Start by identifying which metrics are underperforming and why. Use qualitative feedback to understand root causes. Common improvements include: reducing response times, improving onboarding, creating better self-service resources, proactively reaching out to at-risk customers, and addressing product usability issues. Implement changes incrementally and measure their impact.
Jayson is a long-time columnist for Forbes, Entrepreneur, BusinessInsider, Inc.com, and various other major media publications, where he has authored over 1,000 articles since 2012, covering technology, marketing, and entrepreneurship. He keynoted the 2013 MarketingProfs University, and won the “Entrepreneur Blogger of the Year” award in 2015 from the Oxford Center for Entrepreneurs. In 2010, he founded a marketing agency that appeared on the Inc. 5000 before selling it in January of 2019, and he is now the CEO of EmailAnalytics and OutreachBloom.
