What is NPS, CSAT, and CES and when should you use each?

If you are collecting customer feedback, you have probably come across three common metrics: NPS, CSAT, and CES. They are used by companies of all sizes to understand how customers feel, where friction exists, and how likely someone is to stay or leave.

But knowing the names is not the same as knowing when to use each one. Many teams either use the wrong metric for the wrong moment, or try to force one survey type to answer every question.

In this article, we will break down what each metric actually measures, when to use it, and how to combine them into a simple, effective feedback system.

What is NPS?

NPS stands for Net Promoter Score. It measures customer loyalty and long-term satisfaction by asking one simple question:

How likely are you to recommend us to a friend or colleague?

Respondents answer on a scale from 0 to 10. Based on their score, they are grouped into three categories:

• Promoters (9–10): loyal customers who are likely to recommend you
• Passives (7–8): satisfied but not enthusiastic
• Detractors (0–6): unhappy customers who may churn

The final score is calculated by subtracting the percentage of detractors from the percentage of promoters.

When to use NPS

NPS works best when you want to understand overall customer sentiment over time.

Use NPS when:

• You want a high-level view of customer loyalty
• You are tracking trends month over month or quarter over quarter
• You want to identify promoters and detractors for follow-up
• You are measuring the impact of company-wide changes

When not to use NPS

NPS is not ideal for specific interactions. It does not tell you exactly what went wrong in a support ticket or during onboarding.

What is CSAT?

CSAT stands for Customer Satisfaction Score. It measures how satisfied someone is with a specific interaction, product, or experience.

A typical CSAT question looks like this:

How satisfied were you with your experience?

Responses are usually given on a scale such as 1 to 5 or from “Very dissatisfied” to “Very satisfied.”

When to use CSAT

CSAT is best used right after a specific interaction.

Use CSAT when:

• A support conversation ends
• A knowledge base article is viewed
• A feature is used for the first time
• A customer completes onboarding

CSAT helps you understand how well a specific moment went.

When not to use CSAT

CSAT is less useful for measuring long-term loyalty. Someone can be satisfied with a single interaction but still leave your product later.

What is CES?

CES stands for Customer Effort Score. It measures how easy it was for a customer to complete a task.

A typical CES question looks like this:

How easy was it to complete your task?

Responses often range from “Very difficult” to “Very easy.”

When to use CES

CES is focused on friction. It tells you how hard customers have to work to get value from your product or service.

Use CES when:

• Customers complete a key action, such as setting up an integration
• A support issue is resolved
• A workflow is finished, such as creating a campaign or exporting data

CES is especially valuable because effort is strongly linked to churn. The harder something feels, the more likely customers are to give up.

When not to use CES

CES does not measure satisfaction or loyalty directly. It focuses on ease, not emotion.

How to choose between NPS, CSAT, and CES

Each metric answers a different question:

• NPS answers: How do customers feel about us overall?
• CSAT answers: How satisfied was this specific experience?
• CES answers: How easy was it to get something done?

Instead of choosing one, the best approach is to use them together in the right places.

A simple framework you can use

If you want to keep things simple, you can map each metric to a stage in the customer journey:

1. Relationship level
Use NPS periodically to understand overall sentiment and loyalty.

2. Interaction level
Use CSAT after key touchpoints such as support, onboarding, or content consumption.

3. Task level
Use CES to identify friction in important workflows or actions.

This way, each survey has a clear role and you avoid overlap.

Common mistakes to avoid

Using only one metric
Relying on NPS alone leaves you blind to what actually drives the score.

Sending surveys at the wrong moment
Timing matters. A CSAT survey sent days after an interaction loses context.

Not asking a follow-up question
The score tells you what, but not why. Always include an open text field.

Collecting feedback without acting on it
Feedback only creates value when it leads to change.

How Novella helps you get this right

With Novella, you can design and send NPS, CSAT, and CES surveys without overcomplicating the process.

You can:

• Trigger surveys based on real user actions
• Customize follow-up questions based on responses
• Send feedback directly into tools like HubSpot
• Track trends over time and identify patterns

Instead of guessing which metric to use, you can build a structured feedback system that evolves with your product.

Final thoughts

NPS, CSAT, and CES are not competing metrics. They each serve a different purpose.

If you use them in the right context, they give you a complete picture:

• Loyalty over time
• Satisfaction in key moments
• Friction in critical workflows

Start simple. Pick one use case for each metric, implement it properly, and expand from there.

That is how feedback becomes something you can actually act on.