NPS (Net Promoter Score)

What NPS means

NPS, or Net Promoter Score, is a loyalty metric that measures how likely customers are to recommend a company, product, or service to others, based on a single question: "How likely are you to recommend us to a friend or colleague?" answered on a 0 to 10 scale. Respondents are sorted into three groups: promoters (9 to 10), passives (7 to 8), and detractors (0 to 6). The score is the percentage of promoters minus the percentage of detractors, producing a single number between -100 and +100.

In customer support, NPS is the metric that connects day-to-day service to long-term loyalty. While a CSAT score tells you how one ticket felt, NPS tells you whether the overall relationship is strong enough that the customer would put their own reputation on the line to recommend you, and support is one of the biggest levers on that answer.

Why NPS matters

• It predicts growth, not just mood. A recommendation is an action with social risk attached, so promoters tend to drive referrals and renewals, which ties NPS to customer retention and revenue.
• It is a single, comparable number. Because everyone calculates it the same way, NPS travels well across teams, products, and industry benchmarks.
• It separates loyalty from satisfaction. A customer can be satisfied with a recent ticket yet still a detractor overall, and NPS surfaces that gap that a transactional survey misses.
• It flags churn risk early. A growing pool of detractors is an early signal that something structural is wrong, often before it shows up in customer churn numbers.
• It frames the follow-up question. Pairing the score with "what is the main reason for your rating?" turns a number into a list of fixable causes.

How NPS works

Calculating NPS follows a fixed pattern:

1. Ask the question. Send the 0 to 10 recommendation question, usually on a relationship cadence (quarterly or after a milestone) rather than after every interaction.
2. Bucket the responses. Sort answers into promoters (9 to 10), passives (7 to 8), and detractors (0 to 6).
3. Calculate the score. Subtract the percentage of detractors from the percentage of promoters. For example, 60 percent promoters minus 15 percent detractors gives an NPS of 45.
4. Read the follow-up. Use the free-text reason to understand what is driving each group.
5. Close the loop. Follow up with detractors directly, and feed recurring themes back into product and support.

Support is one of the clearest places NPS moves, because a slow or wrong answer is a fast way to create a detractor. An AI agent like eesel AI keeps resolutions fast and grounded in your own knowledge, and escalates the cases it should not guess on, which removes one of the most common reasons a promoter quietly slips toward a detractor.

NPS in practice

NPS is most useful as a trend with a "why" attached, not as a vanity number on a slide. The headline score tells you direction, but the verbatim reasons tell you what to do, and the most valuable segment to read closely is the detractors who left a comment. Watch the score by cohort and by recent support volume, because a sudden dip often traces back to a specific release, outage, or policy change. Used well, NPS is less a report card than a queue of the relationships most at risk, and the customers worth calling this week.