UX Research Term

Net Promoter Score

Net Promoter Score (NPS) is a customer loyalty metric that measures how likely customers are to recommend your product or service to others. It helps organizations track customer satisfaction, predict business growth, and identify opportunities for improvement based on a simple, standardized scoring system.

What is Net Promoter Score?

Net Promoter Score is a widely adopted customer experience metric introduced by Fred Reichheld in 2003. The beauty of NPS lies in its simplicity—it's based on a single question: "On a scale of 0-10, how likely are you to recommend our product/service to a friend or colleague?" Based on their responses, customers are categorized into three groups:

  • Promoters (9-10): Loyal enthusiasts who will keep buying and refer others
  • Passives (7-8): Satisfied but unenthusiastic customers vulnerable to competitive offerings
  • Detractors (0-6): Unhappy customers who can damage your brand through negative word-of-mouth

Your Net Promoter Score is calculated by subtracting the percentage of detractors from the percentage of promoters:

NPS = % Promoters - % Detractors

NPS scores range from -100 (if every customer is a detractor) to +100 (if every customer is a promoter).

Why NPS Matters

Net Promoter Score has become a standard metric for several compelling reasons:

  • Simplicity: Easy to understand, implement, and communicate across an organization
  • Benchmark capability: Allows comparison across competitors, industries, and time periods
  • Growth indicator: Research shows a strong correlation between high NPS and business growth
  • Customer-centric focus: Encourages organizations to prioritize customer experience
  • Early warning system: Helps identify problems before they impact revenue

A high NPS indicates your customers are likely to promote your product through word-of-mouth, essentially acting as an unpaid marketing force for your business.

How to Implement NPS Effectively

The Basic Process

  1. Ask the core question: "On a scale of 0-10, how likely are you to recommend [product/service/company] to a friend or colleague?"
  2. Follow up with an open-ended question: "What is the primary reason for your score?"
  3. Calculate your score: Subtract the percentage of detractors from the percentage of promoters
  4. Analyze feedback: Look for patterns in the qualitative responses
  5. Take action: Address issues raised by detractors and leverage insights from promoters
  6. Close the loop: Let customers know what actions you've taken based on their feedback
  7. Track over time: Monitor how your NPS changes as you make improvements

Best Practices for NPS Implementation

Keep it simple - Don't overcomplicate your survey with too many additional questions ✅ Survey at the right moment - Consider timing carefully (after key interactions, not during frustrating moments) ✅ Segment your results - Break down NPS by customer segments, products, or touchpoints ✅ Focus on trends - A single NPS number is less valuable than tracking changes over time ✅ Combine with other metrics - Use NPS alongside metrics like customer satisfaction, churn rate, and customer lifetime value ✅ Act on the feedback - The most important step is making changes based on what you learn

Common NPS Mistakes

Focusing only on the score - The qualitative feedback is often more valuable than the number itself ❌ Surveying too frequently - Survey fatigue leads to lower response rates and less accurate data ❌ Not closing the feedback loop - Failing to tell customers how their feedback led to changes ❌ Setting unrealistic targets - Not all industries can achieve extremely high NPS scores ❌ Using NPS in isolation - NPS is most effective as part of a comprehensive measurement system ❌ Comparing across different industries - NPS benchmarks vary widely by industry, making cross-industry comparisons less meaningful

Connecting NPS to User Experience Design

Understanding your Net Promoter Score can highlight areas of your product or service that need UX improvement. When customers provide low scores, they often point to specific pain points in your user experience that need addressing.

Using Card Sorting to Improve Your NPS

Card sorting can be a powerful tool to address issues identified through NPS feedback:

  • Use open card sorting to understand how users naturally categorize features or content that detractors mentioned as problematic
  • Implement closed card sorting to validate new information architectures designed to fix issues highlighted in NPS feedback
  • Apply hybrid card sorting to refine navigation structures that may be contributing to user frustration

For example, if your NPS feedback reveals that customers struggle to find important features in your software, a card sorting exercise can help you redesign your menu structure to better match users' mental models.

Next Steps for Implementing NPS

To get started with Net Promoter Score:

  1. Set up a simple NPS survey system (many tools like SurveyMonkey, Qualtrics, or dedicated NPS platforms can help)
  2. Establish a baseline by surveying a representative sample of your customers
  3. Analyze both the quantitative scores and qualitative feedback
  4. Identify key themes and prioritize areas for improvement
  5. Create an action plan to address issues raised by detractors

Remember that collecting NPS data is just the beginning—the real value comes from the improvements you make in response to customer feedback.

Ready to improve your product's user experience based on customer feedback? Try a free card sort to better understand how users think about your product's features and information architecture.

Try it in practice

Start a card sorting study and see how it works