The NPS score is calculated by subtracting the percentage of detractors from the percentage of promoters. The result is a number between -100 and +100. The formula is straightforward, but what you do with that score determines whether it is truly useful. In this article, you will learn how the calculation works, what a good score looks like, and why the NPS only shows its real value when you look beyond the number itself.<\/p>\n
Promoters, passives, and detractors are the three groups you distinguish based on the recommendation question: \"How likely is it that you would recommend us to a friend or colleague?\" Customers give a score from 0 to 10. Anyone who gives a 9 or 10 is a promoter, anyone who gives a 7 or 8 is passive, and anyone who gives a 0 to 6 is a detractor.<\/p>\n
This classification is not arbitrary. Research into customer behaviour shows that promoters return more often, spend more, and actively refer others. Detractors do the opposite: they leave sooner and share negative experiences. Passives sit in between and do not count in the NPS calculation, but they should not be ignored either. They are vulnerable to better offers from competitors.<\/p>\n
An interesting concept is the superpromoter<\/strong>: a customer who not only gives a high score but also actively enthuses others and wants to be personally involved with your organisation. Superpromoters are more valuable than ordinary promoters, and it pays to identify them and engage them actively.<\/p>\n Discover what customers truly value and give every team clear priorities to improve the customer experience in a focused way.<\/p>\n Discover CX\/KTO \u2192<\/a>\n<\/div>\n You calculate the NPS by subtracting the percentage of detractors from the percentage of promoters. Passives are excluded from the calculation. The outcome always falls between -100 (everyone is a detractor) and +100 (everyone is a promoter).<\/p>\n The formula step by step:<\/p>\n Example calculation:<\/strong> Suppose you have 200 respondents. 100 give a 9 or 10 (50%), 40 give a 0 to 6 (20%), and 60 give a 7 or 8 (30%). The NPS is then 50 - 20 = +30<\/strong>.<\/p>\n The calculation itself is quick to perform. The real challenge lies in gathering sufficient reliable responses and in understanding what the number means for your specific situation.<\/p>\n A good NPS score varies considerably by industry. There is no universal threshold. What is excellent in one sector may be mediocre in another. Always compare your score against relevant industry benchmarks and against your own historical scores.<\/p>\n As a general guideline:<\/p>\n In sectors such as professional services and housing associations, average scores tend to be lower than in leisure or retail, simply because expectations and touchpoints differ. An NPS of +20 at a housing association may be perfectly acceptable, while a theme park with the same score is underperforming relative to its own sector.<\/p>\n What matters most is the trend over time. A rising NPS, even if it starts low, is a stronger signal than a high but declining score.<\/p>\n How often you measure the NPS depends on the type of research you are conducting. With transactional research<\/strong>, you measure after a specific touchpoint, such as a purchase, a service visit, or a complaint resolution. With relational research<\/strong>, you measure the overall experience periodically, independent of any specific interaction.<\/p>\n For transactional research, the rule is: measure as soon as possible after the touchpoint, preferably within 24 to 48 hours. The memory is still fresh and the responses are more reliable. For relational research, a quarterly or half-yearly measurement is common, depending on the size of your customer base and the dynamics of your market.<\/p>\n Continuous measurement has advantages over an annual snapshot. You can spot seasonal patterns, respond quickly to declining scores, and build a more reliable picture over time. At the same time, you do not want to overwhelm customers with surveys. A good measurement frequency respects the customer and keeps response rates high.<\/p>\n An NPS score tells you that<\/em> something is going on, but not what<\/em> is going on or why<\/em>. A score of +35 means nothing if you do not know which factors are pulling it up or down. Without that context, you cannot make targeted improvements.<\/p>\n That is precisely why the NPS must always be combined with a follow-up question: \"What is the most important reason for your score?\" The open-ended explanation is where the real story lies. A detractor who writes that the technician was friendly but had to return three times gives you information you can act on. A number alone does not.<\/p>\n It is also essential to know which parts of the experience have the greatest influence on the score. You map this out with a driver analysis<\/strong>: you analyse which aspects of the service show the strongest correlation with the recommendation score. This tells you where to focus your energy, rather than improving based on gut feeling.<\/p>\n Finally, a score that nobody follows up on changes nothing. Closed-loop follow-up<\/strong> means that dissatisfied customers are actively contacted, that their feedback is translated into a concrete action, and that the customer is informed about what has been done with their input. That is the difference between measuring for a report and measuring to improve.<\/p>\n Calculating an NPS score is one thing. Knowing what to do with it is another matter entirely. CYS Group helps organisations move from a number to a concrete improvement plan, without complex statistics and without insights disappearing into a report.<\/p>\n What we use to achieve this:<\/p>\n We work with organisations in retail, leisure, professional services, housing associations, and more, and are GDPR-compliant and ISO 27001-certified. Want to know how to set up customer satisfaction research<\/a> smartly so that the NPS truly means something? Get in touch and we will look together at what suits your organisation best.<\/p>\nHow do you calculate the NPS score using the formula?<\/h2>\n
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What is a good NPS score for your industry?<\/h2>\n
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How often should you measure the NPS?<\/h2>\n
Why is an NPS score alone not enough insight?<\/h2>\n
How CYS Group helps with calculating and following up on NPS<\/h2>\n
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