Table of contents
Making customer loyalty easy to measure
The Net Promoter Score® (NPS) measures how likely it is that customers will recommend a company or service to others. This makes it one of the most important key figures for long-term growth and a positive customer experience.
The NPS was developed in 2003 by Fred Reichheld in collaboration with Bain & Company and Satmetrix. The aim was to create a simple, yet meaningful indicator that accurately measures customer loyalty and willingness to recommend customers - as a supplement to traditional satisfaction measurements.
How the NPS® works
The NPS® question is:
"How likely are you to recommend us to a friend or colleague?"
The answers are given on a Likert scale from 0 (not at all likely) to 10 (very likely).
This results in three groups:
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Promoters (9-10) - enthusiastic customers who actively recommend the company to others.
-
Passive (7-8) - satisfied but not necessarily loyal customers.
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Detractors (0-6) - dissatisfied customers with a negative impact on your image.
The Net Promoter Score (NPS) is the difference between the proportion of promoters (rating 9-10) and the proportion of detractors (rating 0-6) in response to the question: "How likely is it that you would recommend our company to others?"
NPS = %promoter:inside - %detractor:inside
The result of an NPS is therefore always between -100 and +100:
- Positive values (above 0) mean that there are more promoters than detractors - satisfaction is good overall.
- Values above +50 are considered excellent,
- values between 0 and +50 as solid to good,
- Values below 0 indicate dissatisfaction.

The Net Promoter Score (NPS) measures willingness to recommend - calculated from the proportion of promoters minus the proportion of detractors.
What the NPS® says - and what it doesn't say
A high NPS® means that your company is actively recommended by many customers. This is a strong sign of trust, quality and emotional loyalty.
But be careful: the NPS® shows what your customers feel - not why. That's why it's important to combine it with qualitative feedback.
How to measure your NPS® with ValueQuest
With ValueQuest's survey solutions, the Net Promoter Score® can be collected precisely and efficiently - customized to your industry and target group.
-
Customer Satisfaction Surveys
Capture NPS®, Customer Satisfaction (CSAT) and Customer Effort (CES) combined - for a complete picture of your customer relationships. -
360° feedback and employee surveys
Use the Employee NPS® to measure the loyalty and retention of your employees. -
Industry solutions
Whether services, trade or industry - we provide benchmarks and comparative data from your sector to help you classify your results correctly.
Why the NPS® is worthwhile
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Simple communication: A single key figure for customer satisfaction and loyalty.
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Strategic control: Ideal for management dashboards and customer experience programs.
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Growth through recommendations: Promoters act as multipliers and reduce acquisition costs.
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Early detection of risks: A falling NPS® can indicate critical service or product problems.
Best practices for use
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Measure regularly: Survey the NPS® continuously (e.g. quarterly or after customer interactions).
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Ask open questions: "What was the main reason for your evaluation?" provides valuable qualitative insights.
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Derive measures: Actively contact dissatisfied customers - and use promoters as brand ambassadors.
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Analyze trends: The development over time is more important than a single value.
Conclusion
The Net Promoter Score® is a powerful tool for making customer experiences measurable - simple, clear and comparable. With the survey solutions from ValueQuest you can combine the NPS® with other feedback indicators to create the basis for loyal customers and sustainable growth.
Article published on November 11, 2025
About Dr. Kathrin Neumüller

Dr. oec. HSG Kathrin Neumüller is Co-Managing Director at ValueQuest and an expert in employee inspiration and empowerment. She also teaches strategic management in the MBA program at the ZHAW. She holds a doctorate from the University of St. Gallen (HSG) and studied at the University of Cambridge. Learn more about Kathrin
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