Net Promoter Score (NPS)

Net Promoter Score (NPS) is a customer loyalty metric that measures the likelihood of customers to recommend a product, service, or brand to others. Based on a single survey question scored on a 0 to 10 scale, NPS categorizes respondents into Promoters, Passives, and Detractors and calculates a score ranging from -100 to +100 that serves as a proxy for overall customer sentiment and loyalty.

How NPS Is Calculated

NPS surveys ask customers one core question: “On a scale of 0 to 10, how likely are you to recommend [company/product/service] to a friend or colleague?” Respondents who answer 9 or 10 are classified as Promoters, those who answer 7 or 8 are classified as Passives, and those who answer 0 through 6 are classified as Detractors. NPS is calculated by subtracting the percentage of Detractors from the percentage of Promoters. Passives are excluded from the calculation. A company where 60% of respondents are Promoters and 20% are Detractors has an NPS of 40.

NPS can range from -100 (every respondent is a Detractor) to +100 (every respondent is a Promoter). Scores above 0 indicate that Promoters outnumber Detractors. Scores above 50 are generally considered excellent, and scores above 70 are considered world-class. However, what constitutes a good NPS varies significantly by industry, because customer expectations and competitive alternatives differ across categories. Comparing NPS scores across different industries without adjusting for category norms can produce misleading conclusions about relative performance.

NPS in Marketing Contexts

Marketing teams use NPS as a proxy for customer advocacy and word-of-mouth potential. Promoters are the segment most likely to refer new customers, write positive reviews, and participate in case studies and testimonials, all of which contribute to acquisition at lower cost than paid advertising. Detractors, by contrast, represent churn risk and negative word-of-mouth that can undermine brand reputation and increase customer acquisition costs over time. Programs designed to convert Passives into Promoters and to resolve the root causes of Detractor dissatisfaction can compound long-term revenue growth through improved retention and referral rates.

NPS is also used to segment marketing communications. Promoters who have indicated high satisfaction are well-suited to receive referral program invitations, review solicitations, and expansion offer campaigns. Detractors benefit from proactive outreach designed to understand and resolve their dissatisfaction before they churn, which is typically handled by customer success rather than marketing but is informed by NPS data flowing into the CRM.

Limitations of NPS

NPS is a useful leading indicator of customer loyalty, but it has well-documented limitations. The metric is a lagging measure of the customer relationship that captures a single moment of sentiment rather than a continuous view of the customer experience. NPS scores can vary significantly based on when the survey is deployed in the customer lifecycle, the channel through which it is administered, and the specific customer segment being surveyed. A company with different NPS scores for enterprise and SMB customers or for recently onboarded versus long-tenured customers should analyze those segments independently rather than treating the aggregate score as a uniform indicator of overall program health.

NPS also does not explain why customers feel the way they do. Closed-loop follow-up programs that ask Detractors to describe what went wrong and Promoters to describe what they value most generate the qualitative insight needed to act on NPS data. Without this follow-up step, NPS is a metric without a diagnostic mechanism, and teams tend to focus on the score itself rather than on the customer experience improvements that would move it in a positive direction over time.

Organizations that track this metric consistently and benchmark it against industry standards gain a reliable signal for diagnosing program health and identifying where to invest improvement efforts. Establishing a documented baseline before launching any optimization initiative is essential, because improvement can only be measured against a known starting point. Teams that set clear targets, monitor performance weekly, and conduct structured retrospectives after each test or campaign iteration build the institutional knowledge needed to improve results systematically over time without relying solely on guesswork or one-off experiments.

Sources

  1. Reichheld, F. F. (2003). The One Number You Need to Grow. Harvard Business Review. https://hbr.org/2003/12/the-one-number-you-need-to-grow
  2. Bain and Company. (2024). Net Promoter System. Bain and Company. https://www.netpromotersystem.com
  3. Satmetrix. (2024). Net Promoter Benchmarks. NICE Systems. https://www.satmetrix.com/net-promoter-benchmarks/
  4. Qualtrics. (2024). NPS Best Practices. Qualtrics XM. https://www.qualtrics.com/experience-management/customer/net-promoter-score/
  5. Medallia. (2024). Customer Experience and NPS Research. Medallia Inc. https://www.medallia.com/blog/
  6. HubSpot Research. (2024). State of Marketing Report. HubSpot Inc. https://www.hubspot.com/state-of-marketing
  7. Forrester Research. (2024). Customer Experience Index. Forrester Research Inc. https://www.forrester.com/report/the-forrester-customer-experience-index
  8. Gartner. (2024). Customer Loyalty and Advocacy Research. Gartner Inc. https://www.gartner.com/en/marketing/topics/customer-experience
  9. Temkin Group. (2023). NPS and Business Growth Research. Qualtrics XM Institute. https://www.xminstitute.com/research/
  10. American Customer Satisfaction Index. (2024). ACSI Benchmark Report. ACSI. https://www.theacsi.org

Written by the My Marketing File editorial team. Updated June 2024.