Net Promoter Score (NPS)

Net Promoter Score (NPS) is a metric that measures how likely customers are to recommend your brand to someone else. It's calculated from a single survey question, on a 0-to-10 scale, and produces a score from -100 to +100.

Short version: it tells you how loyal your customers are to the brand as a whole, not how they felt about a specific interaction.

How NPS is calculated

The survey asks: "On a scale of 0 to 10, how likely are you to recommend us to a friend or colleague?" Responses split into three groups:

• Promoters (9-10): Loyal customers who actively recommend you.
• Passives (7-8): Satisfied but unenthusiastic. They could switch.
• Detractors (0-6): Unhappy customers who can damage your brand through word of mouth.

The formula is simple:

NPS = % of Promoters minus % of Detractors

Worked example: 100 customers respond. 50 are promoters, 30 are passives, 20 are detractors. NPS = 50% minus 20% = 30. Note that passives don't appear in the formula directly, but they pull the score down by lowering the share of promoters.

What's a good NPS score?

It depends heavily on industry, region, and how the survey is delivered. Rough benchmarks:

• Above 50: Excellent. Often seen at category-leading brands.
• 20 to 50: Good. The majority of healthy companies sit here.
• 0 to 20: Mediocre. Worth investigating.
• Below 0: Poor. More detractors than promoters. Address the underlying issues.

Don't fixate on absolute scores. The trend over time matters more than the number itself, and benchmarks across industries can vary by 30 points or more. A SaaS NPS of 40 might be low for the category; a telecom NPS of 20 might be excellent.

NPS vs CSAT vs CES

These three metrics measure different things. Confusing them is the most common mistake.

• NPS: How loyal is the customer to the brand? Survey quarterly or after major milestones.
• CSAT: How was this specific interaction? Survey after each closed ticket.
• CES: How easy was it to get help? Best for finding friction in your support process.

CSAT and CES are tactical, useful for improving day-to-day support. NPS is strategic, useful for tracking the long-term health of the brand. Most mature teams track all three on different cadences.

When to use NPS

NPS works best when:

• You want a single number to track brand sentiment over time.
• You're comparing trajectory across quarters or years, not interactions.
• You have enough customers for the score to stabilize. With small samples, NPS swings wildly.

It's less useful for:

• Diagnosing specific support issues. CSAT and CES do that better.
• Very small businesses, where every detractor moves the score significantly.
• B2B teams with very few customers, where NPS is more anecdotal than statistical.

How to improve your NPS

Most NPS gains come from a few patterns:

• Read the comments, not just the score. The number tells you whether customers would recommend you. The free-text answers tell you why or why not. The qualitative data is where the actionable improvements live.
• Close the loop with detractors. Following up with detractors does two things: it gives you the deepest insight into what's broken, and a non-trivial number of those customers convert into promoters when their issue is taken seriously.
• Don't average across segments. A blended NPS of 30 might hide one segment at 60 and another at 0. Segment by plan, region, tenure, or use case to find the real patterns.
• Track trajectory, not absolute score. An NPS of 25 trending up is a healthier signal than an NPS of 45 trending down.

NPS in customer service

Support is one of the biggest levers on NPS, especially in ecommerce. Customers who have had a bad support experience rarely become promoters. Customers who had a great one often do.

Across Neople customers, teams that improved their post-purchase support experience saw NPS rise by 8 to 20 points within six months. Same products, same customers, different support journey. The CSAT impact is faster, but the NPS impact is what shows up in retention.

Common mistakes

• Treating NPS as a vanity metric. The score itself is less useful than the comments and the trend.
• Surveying too often. NPS fatigue is real. Quarterly is plenty for most teams.
• Confusing NPS with CSAT. They measure different things, on different cadences.
• Tying NPS to individual employee bonuses. Creates incentive to game the score rather than improve the experience.