Net Promoter Score (NPS)

What is Net Promoter Score (NPS)?

NPS is a metric measuring the likelihood that customers will recommend your service to friends and colleagues. Calculated from a single question—“How likely are you to recommend this service on a scale of 0-10?"—it produces a value from -100 to +100. Though simple, it’s a powerful indicator of customer satisfaction and business growth potential, used globally.

In a nutshell: “Expressing whether customers are fans of you in a single number.”

Key points:

• What it does: Measures customer loyalty through 1-2 brief survey questions
• Why it’s needed: Quickly understanding growth potential, customer satisfaction, and areas needing improvement
• Who uses it: SaaS companies, retail, customer service departments

Why it Matters

Customer satisfaction alone isn’t enough. Real value comes from whether customers recommend you to others. Recommendations are the most powerful marketing, and referral-based customer acquisition is cost-efficient.

NPS is also recognized as a growth predictor. High-NPS companies tend to grow faster than those with low NPS. Investors prioritize NPS, making it advantageous in fundraising.

Calculation Method

NPS calculation is extremely simple.

Survey administration Ask customers: “On a 0-10 scale, how likely are you to recommend us to friends?”

Respondent classification

• 9-10: Promoters—fans likely to refer
• 7-8: Passives—satisfied but won’t recommend
• 0-6: Detractors—dissatisfied, likely to spread negative word-of-mouth

Calculation formula NPS = (% Promoters - % Detractors)

Calculation example With 100 respondents, 50 promoters (50%) and 20 detractors (20%), NPS = 50 - 20 = 30.

Benchmarks and Guidelines

“Good” and “bad” NPS varies significantly by industry.

General guidelines

• Above 0: Positive (more promoters than detractors)
• 50+: Excellent
• 70+: World-class (Netflix, Apple level)
• Below 0: Critical (urgent improvement needed)

Note: Industry and region differences are significant. Comparing to industry averages is important, as is tracking your own time-series trends (year-over-year improvement/decline).

Real-World Use Cases

SaaS Company Growth Management Software companies track NPS monthly, measuring post-feature-launch improvements and customer success program effectiveness.

Retail Improvement Initiatives Department stores measure NPS to track changes pre/post-renovation, verifying customer satisfaction improvements.

Financial Institution Competitive Analysis Banks use NPS for competitor comparison and prioritizing customer loyalty initiatives.

Benefits and Considerations

Benefits include simplicity and easy implementation, global benchmarking capability, and validity for growth prediction. Single-number communication across the organization creates organization-wide improvement motivation.

Considerations include insufficient context from a single question, response variation by culture (Japanese tend toward lower scores), and NPS alone providing no diagnostic information. Always combine with open-ended questions like “What could we improve?”

Related Terms

• Customer Satisfaction — Satisfaction at specific events. More short-term than NPS
• Customer Effort Score — Service usability metric
• Customer Journey — Visualizing all customer touchpoints
• CX Improvement — Experience enhancement driven by NPS
• Customer Loyalty — Long-term customer satisfaction

Frequently Asked Questions

Q: How frequently should NPS be measured? A: At major changes (post-campaign, post-renovation) and periodically (quarterly, annually). Excessive surveying causes response fatigue.

Q: Can negative NPS be improved? A: Yes. Listening to negative feedback and implementing improvements gradually improves scores.

Q: Is NPS alone sufficient? A: No. While important, combining with qualitative feedback and CSAT provides deeper insights.