Net Promoter Score is probably the most widely used loyalty metric in business, and one of the most widely misunderstood. At its simplest it is a single question — "how likely are you to recommend us?" — answered on a scale of 0 to 10. The appeal is obvious: one number, tracked over time, comparable across periods and locations. The trap is treating that number as the answer rather than the starting point.
How the score works
Responses split into three groups. Scores of 9 and 10 are promoters — loyal enthusiasts. Scores of 7 and 8 are passives — satisfied but unattached. Scores of 0 to 6 are detractors — customers who are at best indifferent and at worst actively unhappy.
The score is the percentage of promoters minus the percentage of detractors. Passives count towards the total number of responses but not towards either side, which is why they quietly drag your score down. The result runs from -100 (everyone a detractor) to +100 (everyone a promoter). A positive score is generally healthy; above +50 is very good. But raw benchmarks matter far less than your own trend over time.
The number is not the point
Here is where most NPS programmes stall. A team measures the score every quarter, watches it drift by a few points, and has no idea what to do about it — because a number cannot tell you what to fix. An NPS of 34 is not an instruction.
The value is in the responses behind the number. The one question that turns NPS from a vanity metric into a tool is the follow-up: why? Ask a detractor what went wrong and you get a specific, fixable cause. Cluster those answers and you find the two or three things quietly costing you loyalty. The score tells you whether you are winning; the comments tell you what to do next.
Running NPS well
A few practices separate NPS that drives change from NPS that just fills a slide. Keep the scale standard 0–10 so your number stays comparable to any benchmark. Always pair the score with an open follow-up, and show it only to lower scores so promoters are not held up. Watch the promoter, passive and detractor split rather than just the headline figure — a stable score can hide promoters sliding into passives. And read the number as a trend, not a verdict: the direction of travel matters more than any single quarter.
Formulatiq includes NPS as one field type among many, with the segmentation and follow-up built in. See how NPS surveys work, browse the full feature set, or read about the review volume that actually moves the needle.