How to Calculate and Improve Your Net Promoter Score (NPS)

A company can have thousands of customers and still struggle to answer a simple question: How loyal are they, really?

 

Sales numbers show what customers bought. Retention data shows who stayed. Customer support records reveal where people experienced problems. But none of these metrics alone explains how willing customers are to recommend a company.

 

That is where Net Promoter Score, or NPS, comes in.

 

Learning how to calculate NPS is straightforward. Improving it is much harder. A rising score usually requires changes across the customer experience, not a better survey question or a clever follow-up email.

 

This guide explains how NPS works, how to interpret a customer loyalty benchmark, and how businesses can turn feedback into measurable improvements.

 

First, calculate NPS correctly

 

The standard NPS question asks:

 

“How likely are you to recommend our company, product, or service to a friend or colleague?”

 

Customers answer on a 0–10 scale.

 

The responses are divided into three groups:

 

● Promoters: 9–10

● Passives: 7–8

● Detractors: 0–6

 

The calculation is:

 

NPS = % of Promoters − % of Detractors

 

Passives are included in the total number of responses, but they do not directly add or subtract points from the score.

 

For example, imagine 200 customers respond:

 

● 110 are Promoters

● 50 are Passives

● 40 are Detractors

 

The result is:

 

55% − 20% = NPS of +35

 

The final score can range from −100 to +100.

 

Importantly, NPS is not an average rating. A score of 8 does not mean the company has an NPS of 8.

 

What your NPS actually tells you

 

The number itself is only the beginning.

 

A positive NPS generally means that Promoters outnumber Detractors. A negative score means the opposite. But the score does not explain why customers feel that way.

 

Consider two companies with an NPS of +20.

 

Company A has many highly enthusiastic customers but also a meaningful group of frustrated customers.

 

Company B has very few Detractors, but most customers are Passives who are reasonably satisfied without feeling particularly loyal.

 

Both companies have the same NPS, but they have completely different problems.

 

That is why organizations should examine the distribution behind the score rather than treating NPS as a single health indicator.

 

Stop treating benchmarks as universal targets

 

A common mistake is asking, “What is a good NPS?”

 

There is no single number that makes a company successful across every industry.

 

Customer expectations vary dramatically between sectors. A software product, airline, financial service, restaurant, and B2B industrial supplier operate under different conditions.

 

This makes a customer loyalty benchmark useful only when the comparison is meaningful.

 

Instead of comparing your score with a random company on the internet, prioritize:

 

your previous NPS → your relevant peer group → your customer segments

 

A score of +30 might represent significant progress for one organization while signaling a serious decline for another.

 

Your own historical trend is often the most actionable benchmark.

 

Find out what is creating your score

 

If your NPS is falling, calculating it again will not solve the problem.

 

The next step is diagnosis.

 

Add a follow-up question such as:

 

“What is the main reason for your score?”

 

An open-ended question gives customers space to explain their experience in their own words.

 

Suppose an ecommerce company discovers that its Detractors repeatedly mention delayed delivery.

 

The NPS result is not the problem.

 

The delivery experience is.

 

Another company might discover that customers are satisfied with the product but frustrated by onboarding. A subscription service might find that customers like the core product but dislike unexpected billing changes.

 

This distinction changes what the company should do next.

 

Look at Promoters and Detractors separately

 

Many teams focus almost entirely on Detractors.

 

That makes sense when the goal is to eliminate major sources of dissatisfaction, but Promoters contain valuable information too.

 

Ask:

 

What makes our strongest customers enthusiastic enough to recommend us?

 

Perhaps Promoters consistently mention:

 

● Fast customer support

● Simple setup

● Reliable delivery

● Helpful account managers

● Product quality

● A specific feature

 

These answers can reveal the experiences that should be protected and scaled.

 

At the same time, Detractor feedback identifies friction that may be suppressing loyalty.

 

The goal is not simply to move every Detractor into the Promoter category. It is to understand the experiences that influence both groups.

 

Segment NPS before making major decisions

 

A company-wide score can hide important differences.

 

Break NPS down by meaningful customer characteristics such as:

 

● Customer tenure

● Product or plan

● Geographic market

● Acquisition channel

● Customer type

● Usage frequency

● Customer journey stage

 

Imagine an SaaS company with an overall NPS of +28.

 

That looks healthy until the team discovers that customers who have used the product for more than one year have an NPS of +45, while customers in their first 90 days have an NPS of −5.

 

The business does not necessarily have a general loyalty problem.

 

It may have an onboarding problem.

 

This is why segmentation can be more useful than obsessing over the overall score.

 

Improving NPS starts with fixing experiences, not chasing points

 

If the objective is to improve net promoter score, avoid treating NPS as a performance number employees need to manipulate.

 

Instead, connect feedback to specific operational changes.

 

For example:

 

Problem: Customers repeatedly complain about slow support responses.

 

Action: Introduce clearer support routing and escalation rules.

 

Measurement: Track response time alongside NPS.

 

Follow-up: Re-measure customers after the changes have been implemented.

 

This creates a feedback loop rather than a reporting exercise.

 

The same principle works across different customer experiences. If customers complain about confusing onboarding, simplify the first-use journey. If they dislike billing transparency, redesign pricing communication. If product reliability drives negative feedback, connect customer comments with product and support data.

 

Do not forget the Passives

 

Passives are often overlooked because they do not directly affect the NPS formula.

 

But they can represent an important growth opportunity.

 

A Passive may be satisfied but not emotionally committed to the brand. They might continue using the product because switching is inconvenient rather than because they genuinely prefer it.

 

Their follow-up responses can reveal what is missing.

 

Maybe the product works well but lacks an important feature. Maybe support is acceptable but not proactive. Maybe competitors offer a more compelling experience.

 

The objective is not to artificially turn Passives into Promoters. It is to understand what separates ordinary satisfaction from stronger loyalty.

 

Build an NPS improvement cycle

 

A sustainable NPS program should follow a repeating cycle:

 

Measure → Diagnose → Prioritize → Act → Re-measure

 

Start by collecting NPS at a consistent customer touchpoint.

 

Then examine the reasons behind the score.

 

Prioritize the problems that are both frequent and important.

 

Assign improvements to the teams that can actually change the experience.

 

Finally, measure again after enough time has passed for the changes to influence customers.

 

This prevents the common mistake of collecting feedback without closing the loop.

 

Use SurveyMars to turn NPS into an ongoing feedback process

 

SurveyMars can support the practical workflow behind an NPS program rather than treating NPS as a single question.

 

Teams can use ready-to-use survey templates to build customer feedback surveys faster and customize them for different stages of the customer journey.

 

Its flexible survey logic can also help create different follow-up paths based on responses. For example, a Detractor can be asked for the main reason behind their score, while a Promoter can be invited to explain what they value most.

 

For teams managing larger feedback programs, AI-powered data analysis can help organize and interpret response patterns after data collection.

 

The platform supports 50+ question types, giving researchers room to combine the core NPS question with ratings, multiple-choice questions, and open-ended feedback rather than relying on one metric alone.

 

The goal is not simply to get a higher number. It is to create a process where customer feedback leads to better customer experiences.

 

How to know whether your NPS improvements are working

 

Do not judge an improvement program only by whether NPS increased in the next survey.

 

Look for supporting evidence.

 

Are Detractor comments about the original problem becoming less frequent? Are specific customer segments improving? Did retention change? Are support complaints declining? Are customers mentioning the improvement without being prompted?

 

For example, if a company redesigns onboarding because new customers have low NPS, the team should examine onboarding completion, support requests, early churn, and NPS among newer customers.

 

NPS becomes much more valuable when it is connected to real customer behavior.

 

FAQs About Calculating and Improving NPS

 

1. How do you calculate NPS?

 

Calculate the percentage of Promoters and subtract the percentage of Detractors. Passives are included in the response base but do not directly affect the formula.

 

2. What is a good NPS score?

 

There is no universal “good” score. A meaningful customer loyalty benchmark should consider industry, customer type, methodology, and historical performance.

 

3. Can NPS be negative?

 

Yes. NPS ranges from −100 to +100, so a company can have a negative score when Detractors outnumber Promoters.

 

4. Should Passives be included when calculating NPS?

 

Yes. Passives count toward the total number of respondents, but their percentage is neither added nor subtracted from the final score.

 

5. How often should a company measure NPS?

 

It depends on the customer journey and business model. The key is to use a consistent measurement approach and avoid surveying customers so frequently that feedback becomes burdensome.

 

6. What is the fastest way to improve net promoter score?

 

There is no universal shortcut. The most effective approach is usually to identify the strongest recurring sources of dissatisfaction, prioritize actionable problems, make operational changes, and measure the relevant customer segment again.

 

7. Should NPS be compared across different industries?

 

Cross-industry comparisons should be treated carefully because customer expectations and survey contexts differ. Comparisons within a relevant industry or against your own historical results are usually more informative.

 

8. Is NPS enough to measure customer loyalty?

 

No. NPS is useful, but it should be considered alongside behavioral and experience metrics such as retention, repeat purchases, churn, customer feedback, and usage patterns.

 

Final Thoughts

 

NPS is easy to calculate but easy to misunderstand.

 

The formula tells you the balance between Promoters and Detractors. It does not tell you what created that balance, which customers are most at risk, or which operational change will improve loyalty.

 

That is why the strongest NPS programs go beyond the score.

 

Use the number as a signal. Use follow-up questions to understand the reasons. Use segmentation to find where the problem is concentrated. Then connect the findings to specific improvements and measure again.

 

The real goal is not a higher NPS on a dashboard.

 

It is a customer experience that gives people more reasons to stay, return, and recommend your business.