How NPS Is Calculated
NPS = %Promoters − %Detractors
Respondents are grouped into three categories based on their 0-10 rating: Promoters (9-10) are loyal enthusiasts who will keep buying and refer others. Passives (7-8) are satisfied but unenthusiastic customers vulnerable to competitive offers. Detractors (0-6) are unhappy customers who can damage your brand through negative word-of-mouth.
Why NPS Matters
Developed by Fred Reichheld at Bain & Company in 2003, NPS has become the most widely adopted customer loyalty metric globally because it is simple to administer, easy to benchmark, and correlates with revenue growth across industries.
NPS Benchmarks by Industry
| Industry | Typical NPS Range |
|---|---|
| SaaS/Software | 30-50 |
| Retail/E-commerce | 20-50 |
| Financial Services | 0-40 |
| Telecommunications | -10 to 30 |
| Healthcare | 10-40 |
Limitations of NPS
- A single question cannot capture the full complexity of customer experience
- Cultural differences affect rating scale usage — some markets rarely give 9-10 scores
- NPS alone doesn't explain *why* customers feel a certain way — pair with open-ended follow-up questions
- Comparing NPS across industries is misleading; benchmark within your own sector
Frequently Asked Questions
How often should I measure NPS?
Quarterly for B2B relationship NPS, or transactionally after key touchpoints (purchase, support interaction) for B2C. Avoid surveying the same customer more than once per quarter to prevent survey fatigue.
What is a good NPS follow-up question?
"What is the primary reason for your score?" — this open-ended follow-up is what actually drives actionable insights, not the number itself.