What Is Net Promoter Score

What does Net Promoter Score mean?

Net Promoter Score, or NPS, is a market research metric built on a single survey question: on a scale of 0 to 10, how likely are you to recommend this company or product to a friend or colleague. Per Bain & Company, whose consultant Fred Reichheld developed NPS with Satmetrix and popularized it in a 2003 Harvard Business Review article, respondents scoring 9 or 10 are promoters, 7 or 8 are passives, and 0 through 6 are detractors. NPS itself equals the percentage of promoters minus the percentage of detractors, which produces a single score ranging from negative 100 to positive 100 rather than a simple average. A company with mostly passives and few detractors can still post a modest score that looks worse than the underlying sentiment actually is.

Why Net Promoter Score matters for product managers

Builders Camp's Product MBA certification quiz asks directly what NPS measures, and the correct answer defines it as customer loyalty gauged by likelihood to recommend, with promoters described as highly loyal and likely to repurchase. That framing matters for a PM because NPS is a lagging indicator of loyalty, not a diagnostic tool by itself; the score tells a team whether loyalty is trending up or down, but it takes a follow-up question, why did you give that score, to learn what is actually driving the number. A PM who reports the score alone without that follow-up context gives leadership a trend line with no explanation for why it moved.

Net Promoter Score example

A subscription software company runs its quarterly NPS survey and sees a score drop from 42 to 28 in one quarter, a clear signal something changed, but the number alone does not say what. Builders Camp's Voice of the Customer material treats the follow-up comment field as the more important half of the survey: reading the detractor comments reveals a recent pricing change is the common thread, which the team can only act on because it fed that qualitative input into the same research synthesis process it uses for every other feedback channel, not treated as a standalone number to report and move on from. Fixing the pricing communication that quarter, rather than waiting for the next survey to confirm the same drop, is what the follow-up question actually buys the team.

How Builders Camp teaches Net Promoter Score

Voice of the Customer, a 1 week bootcamp with 1 live session and 10 microlessons taught by Andre Albuquerque, and the Product MBA's Measuring Success module both test NPS directly in their certification quizzes alongside the Sean Ellis Test. Data for Product Managers covers how to read NPS trends alongside other metrics rather than in isolation, live or self-paced. See the Voice of the Customer bootcamp for the full syllabus.