Implementing the Customer Effort Score step by step starts with one key question for your customer: How easy was it to resolve your issue? Based on that answer, you build a measurement framework that shows you where customers get stuck when interacting with your organization. In this article, we answer the six most frequently asked questions about CES, from the basics to the first concrete steps for improvement. Want to get a head start on what a strong customer engagement approach looks like? The rest of this article will provide you with the building blocks to achieve it.
What exactly does the Customer Effort Score measure?
The Customer Effort Score (CES) measures how much effort a customer had to put in to get a question answered or a problem resolved. Customers rate this on a scale, usually from 1 to 7, where a low score indicates little effort and a high score indicates a lot of effort. The less effort required, the greater the likelihood of customer loyalty.
CES is deliberately distinct from other metrics such as NPS (Net Promoter Score) or CSAT (Customer Satisfaction). While NPS measures the overall relationship and CSAT provides a snapshot of satisfaction, CES focuses specifically on friction within an interaction. Research in the field of customer experience consistently shows that reducing customer effort correlates more strongly with loyalty than creating a positive surprise.
The score reflects the experience surrounding a specific point of contact, such as a phone call, a chat conversation, or the submission of a complaint. This makes CES particularly useful for organizations that want to optimize their customer interactions at the operational level.
When is CES the right metric to use?
CES is the right metric when you want to measure how smoothly a specific customer interaction goes, not how satisfied a customer is in general. Use CES immediately after a touchpoint such as a service call, a return request, or an onboarding step. The metric is most valuable in situations where customers have to take action or make arrangements.
CES is less suitable if you want to evaluate the overall customer relationship or measure willingness to recommend your business. In those cases, NPS is a better fit. Combine the two if you want to understand both operational friction and strategic loyalty.
Practical situations where CES works well:
- Immediately after a phone call or chat with customer service
- After navigating through a self-service environment or FAQ
- After filing or resolving a complaint
- After an onboarding process or product activation
- After a return or cancellation request
So be sure to choose CES as a supplement to your existing measurement structure, not as a replacement for everything you already measure.
How do you formulate a CES question correctly?
The standard CES question is: “To what extent do you agree with the following statement: It was easy to resolve my issue?” Customers respond on a 7-point scale ranging from “strongly disagree” to “strongly agree.” This wording is intentionally phrased positively because it yields more reliable responses than a negative or neutral question.
A few guidelines for a good CES question:
- Be specific: relate the question to the interaction that just took place, not to the organization in general
- Keep it brief: one question, one scale, and no more than one open-ended follow-up question
- Use a consistent scale: don’t switch between 5-point and 7-point scales across different channels
- Add an optional open-ended question: “What could have been easier?” to gain valuable qualitative insights
Avoid questions like “How satisfied are you?” because that’s CSAT, not CES. The key question is always about effort or ease, not about satisfaction or appreciation.
Through which channels can you send CES surveys?
You can send CES surveys via email, SMS, web chat, WhatsApp, in-app notifications, and telephone IVR systems. The most effective channel is the one through which the interaction took place. A customer who was assisted via chat prefers to receive the survey directly in that same chat window, immediately after the conversation ends.
Timing is just as important as the channel. Ideally, send the survey within five to ten minutes of the initial contact. The longer you wait, the fuzzier the memory becomes and the less reliable the response.
Channel-Specific Considerations
Email gives you more space for a brief explanation, but the response rate drops quickly if the survey takes longer than one minute to complete. So stick to the main question and one optional open-ended question. Via text message or WhatsApp, a direct link to a single question works best. Long questionnaires are rarely completed on mobile devices.
Integration with your existing systems
Make sure your CES tool integrates with your contact center or CRM system. This allows you to link scores to specific interactions, agents, or product categories. Without that integration, you’ll have a score, but no context to act on it. See how contact center technology supports these integrations.
How do you calculate and interpret your CES score?
The most commonly used method for calculating CES is the percentage of respondents who “agree” or “strongly agree” with the statement that it was easy, minus the percentage who “disagree” or “strongly disagree.” A positive score means that more customers found it easy than difficult.
On a 7-point scale, scores of 5, 6, and 7 are generally considered positive (little difficulty), scores of 1, 2, and 3 are considered negative (great difficulty), and a score of 4 is considered neutral. The calculation is as follows:
- Count the percentage of respondents who scored a 5, 6, or 7 on
- Subtract the percentage of respondents who scored a 1, 2, or 3 from that figure
- The result is your CES score, expressed as a number between -100 and +100
A score above zero means that the majority of users experience little difficulty. The higher the score, the better. Use your own historical scores as a reference point, because absolute benchmarks vary greatly by industry and type of interaction.
What actions do you take based on CES results?
Based on CES results, take targeted actions to reduce friction at specific touchpoints. First, analyze where the lowest scores are coming from: which channel, which type of question, which department, or which time of day. Next, link those insights to concrete improvements in your processes, routing, or self-service options.
A practical three-step approach:
- Segment your scores: break down results by channel, reason for contact, and employee level to identify patterns
- Analyze the open-ended responses: Qualitative feedback reveals the root cause of a low score, not just the symptom
- Set priorities based on volume and impact: first improve the contact reasons that occur most frequently and have the lowest scores
Common improvement measures include simplifying IVR menus, improving knowledge bases for employees, adding self-service options for frequently asked questions, and reducing the number of times customers have to repeat their story when they are transferred.
How Pegamento Helps Improve Your CES
At Pegamento, we help organizations systematically reduce friction in customer interactions—which is precisely what CES measures. Our approach combines omnichannel contact center technology, smart routing, and AI-driven self-service into a cohesive whole. No fragmented systems, no complex vendor structure—just everything under one roof.
What specifically we can do for you:
- Smart IVR and call routing so customers are connected directly to the right person
- Omnichannel integration of phone, chat, WhatsApp, and email into a single, easy-to-use platform
- AI-powered self-service that answers frequently asked questions outside of business hours
- Real-time reports that allow you to link CES scores to specific touchpoints and areas for improvement
- Customized solutions using standard building blocks, so you can get started quickly without costly custom development projects
Would you like to know how your organization can reduce customer effort? Contact us, and we’ll explore the possibilities together.
Frequently Asked Questions
How many respondents do you need before your CES scores are reliable?
To obtain reliable CES insights, you need at least 30 to 50 responses per segment before drawing conclusions. With smaller sample sizes, outliers can significantly skew the score. If response numbers are low, hold off on implementing major process changes and first use the data as an indicator to investigate further through qualitative interviews with customers.
What is a good CES score, and how do I know if my score needs to improve?
There is no universal 'good' CES score, because benchmarks vary widely by industry, channel, and type of interaction. The most valuable reference is your own historical trend: if your score improves over time, you’re heading in the right direction. As a rule of thumb, a positive score (above zero) means that more customers experienced little difficulty than a lot, but always focus on improvement relative to your own baseline rather than on an external number.
How do I prevent a low response rate on my CES surveys?
The main culprits for a low response rate are a survey that’s too long, sending it too late, and using a channel that doesn’t match the interaction. Keep the survey to a maximum of two questions, send it within five minutes of the interaction, and preferably use the same channel as the interaction itself. A short, friendly opening that explains why the feedback is valuable noticeably increases the response rate.
Can I also use CES for digital self-service environments such as an FAQ page or chatbot?
Yes, CES is particularly well-suited for digital self-service because it measures whether a customer achieved their goal without difficulty. Add the CES question at the end of a chatbot conversation or after viewing a knowledge base page with a button such as 'Was this helpful?'. Low scores on specific self-service topics tell you exactly which content or workflows you need to improve to prevent repeat contact.
What should I do if my CES scores vary significantly across channels?
Significant differences between channels are a valuable source of insights, not a problem in and of themselves. Analyze which channel consistently scores lower and use the open-ended responses to investigate the underlying cause: is it longer wait times, unclear navigation, or insufficient agent knowledge? Use the highest-scoring channel as an internal benchmark and identify which elements of it you can apply to the channels with higher friction.
How do I involve my customer service team in improving CES scores without creating resistance?
The biggest pitfall is using CES as an evaluation tool for individual employees rather than as a tool for improving processes. Introduce CES as a shared team goal and emphasize system improvements—such as better knowledge bases or smarter routing—rather than individual performance. Actively involve employees in analyzing low scores: they often understand the causes of friction better than the data alone reveals.
How often should I evaluate my CES approach and survey questions?
Evaluate your CES questionnaire and measurement points at least once a quarter, especially during the first six months after implementation. Check whether the question still aligns with the touchpoints you’re measuring, whether the response rate is stable, and whether the scores are consistent with the qualitative feedback you receive. Adjust your approach if your processes or channels change significantly, but modify the questionnaire as little as possible to maintain historical comparability.
