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Why NPS rarely leads to better decisions

NPS (Net Promoter Score) measures recommendation intent, not actual loyalty. The link between what customers say they would recommend and what they actually do is weak. NPS gives a number, but rarely an actionable insight.

NPS has become the industry standard for measuring customer loyalty. But research consistently shows that NPS has weak correlation with actual behavior.

A customer who gives 9 out of 10 on NPS can still switch supplier next month. And a customer who gives 6 may be loyal for years — they are just not the type to recommend.

The problem is not that NPS is entirely useless. The problem is that it is used as though it were a complete measure of the customer relationship.

Key takeaways

  • NPS measures intention, not behavior
  • Weak correlation with actual retention and growth
  • A single number gives no explanation, why did the customer give that score?
  • Better alternatives: combine behavioral data with customer surveys

Example

A B2B supplier had NPS +45 (excellent). Yet 22% of customers churned within 12 months. Deeper analysis revealed that the NPS question was asked immediately after delivery — when customers were at their most satisfied. It did not capture the problems that arose 3-6 months later.

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