Net promoter score (NPS) measures customer loyalty by asking one question: on a 0 to 10 scale, how likely are you to recommend this company to a friend or colleague? You subtract the percentage of detractors (0 to 6) from the percentage of promoters (9 to 10). The result runs from -100 to +100. A positive score means more customers would recommend you than would warn people away.

Last reviewed: September 2026

Most guides stop at the formula and a generic benchmark. This one gives you the worked math, a same-industry benchmark table, the survey mechanics that keep your score honest, and a specific loop for turning scores into revenue. NPS is one of the clearest signals in how to measure marketing effectiveness, because it links directly to referral and repeat purchase.

How net promoter score is calculated

Net promoter score is the percentage of promoters minus the percentage of detractors, ignoring passives in the subtraction. Ask the 0 to 10 recommendation question, then sort responses into three groups: promoters (9 to 10), passives (7 to 8), and detractors (0 to 6). Convert each group to a percentage of total responses, then subtract detractor percentage from promoter percentage.

1. Collect scores. Ask the single 0 to 10 likelihood-to-recommend question and gather at least 100 responses before you trust the number.
2. Sort into three groups. Promoters score 9 to 10, passives score 7 to 8, detractors score 0 to 6.
3. Convert to percentages. Divide each group by total responses. Passives count toward the total but not the subtraction.
4. Subtract. NPS equals promoter percentage minus detractor percentage, expressed as a whole number, not a percent sign.

Worked example: 500 responses, with 300 promoters, 100 passives, and 100 detractors. Promoters are 60 percent, detractors are 20 percent. Your NPS is 60 minus 20, which equals +40. The 100 passives lower your promoter share but never enter the final subtraction.

What is a good net promoter score by industry

A good net promoter score depends almost entirely on your industry. Across all sectors the average sits near +32 in 2026. As a rough rule, above 0 is acceptable, above 30 is good, above 50 is excellent, and above 70 is world-class. A +40 that looks strong in telecom may trail best-in-class insurance peers by 30 points, so same-sector comparison matters more than any global number.

Treat these as ranges, not targets. Benchmarks shift by year and survey provider, so track your own trend line quarter over quarter and compare against direct competitors when you can. A rising score against a stable methodology tells you more than a single point-in-time figure.

How to run an NPS survey correctly

Run NPS as a short, timed survey with one rating question and one open follow-up. The rating captures the number; the follow-up (“What is the main reason for your score?”) captures the why. Send relational NPS on a regular cadence, usually quarterly, and keep the wording and scale identical every time so the trend stays comparable.

1. Choose the type. Relational NPS measures the overall relationship on a cadence; transactional NPS fires after a specific event such as a purchase or support ticket.
2. Set the cadence. Survey relationships quarterly or twice a year. Surveying too often trains customers to ignore you.
3. Ask two questions only. The 0 to 10 rating, then an open-ended reason. Extra questions cut completion rates.
4. Segment on send. Tag responses by plan, tenure, region, and acquisition channel so you can read the score by group later.
5. Freeze the method. Keep identical wording, scale, and timing across waves; any change breaks comparability.

Aim for a representative sample rather than a huge one. A response rate of 15 to 40 percent is common for existing customers. Watch for bias: surveying only recent buyers or only support contacts skews the number away from your true base.

Closing the loop on NPS feedback

Closing the loop means acting on individual responses, not just tracking the aggregate. The score itself changes nothing; the follow-up conversations do. Route detractors to a person within 48 hours, thank passives and ask what would move them to a 9, and turn promoters into referrals and reviews. This is where NPS stops being a vanity metric and starts feeding customer acquisition strategy.

The open-ended reasons are the real asset. Tag them by theme (onboarding, pricing, support speed, product gaps) and count the frequency. The top two or three themes among detractors usually point to the single fix that raises the score most.

NPS limits and alternatives: CSAT and CES

NPS measures relationship loyalty, but it is a poor fit for judging a single interaction. It also hides the reason behind a number unless you read the comments. For touchpoint-level insight, pair it with CSAT (customer satisfaction) or CES (customer effort score), which target specific moments rather than the whole relationship.

Use them together. NPS gives the wide relationship read on a cadence, while CSAT and CES catch friction at specific touchpoints so you can act before it drags the relationship down. No single metric replaces reading verbatim comments and watching repeat-purchase and churn behavior alongside the score.

How to actually raise your net promoter score

You raise NPS by converting passives to promoters and reducing the causes that create detractors, not by chasing the number itself. Fix the highest-frequency complaints first, invest in the parts of the journey that already delight customers, and make it easy for happy customers to advocate. Content and education are two of the most reliable ways to move satisfied customers into active promotion.

• Fix the top detractor theme. One recurring failure, such as slow support or a confusing onboarding step, usually drives most low scores.
• Shorten time to value. Customers who reach their first win faster score higher; map and compress that first-value moment.
• Educate after the sale. Helpful content marketing and onboarding resources turn confused users into confident promoters.
• Ask promoters to act. A referral or review request sent within days of a 9 or 10 captures goodwill while it is fresh.

Measure the effect the same way every quarter, and expect movement over two or three waves rather than one. If you want an outside read on which fixes will move loyalty and revenue fastest, review the fractional-CMO consulting services and how they connect NPS to acquisition and retention.

Frequently asked questions

What is a good net promoter score?

A good net promoter score depends on your industry, but as a general guide anything above 0 is acceptable, above 30 is good, above 50 is excellent, and above 70 is world-class. The all-industry average sits near +32 in 2026. Compare your score against direct competitors in your sector, because a strong retail number can be average in software.

How is net promoter score calculated?

Ask customers how likely they are to recommend you on a 0 to 10 scale. Sort them into promoters (9 to 10), passives (7 to 8), and detractors (0 to 6). Convert promoters and detractors to percentages of total responses, then subtract the detractor percentage from the promoter percentage. Passives count toward the total but not the subtraction. The result runs from -100 to +100.

What is the difference between NPS, CSAT, and CES?

NPS measures overall loyalty and referral intent on a 0 to 10 scale, usually surveyed quarterly. CSAT measures satisfaction with one specific experience, typically on a 1 to 5 scale right after an interaction. CES measures how much effort a task required, often on a 1 to 7 scale after a process like support or checkout. Many teams run all three together.

How often should you send an NPS survey?

Relational NPS, which measures the overall relationship, is typically sent quarterly or twice a year so you can track a trend without fatiguing customers. Transactional NPS fires right after a specific event such as a purchase or support ticket. Keep the wording, scale, and timing identical across waves so scores stay comparable.

How many responses do you need for a reliable NPS?

Aim for at least 100 responses before you trust an NPS figure, and more for large customer bases so subgroups are meaningful. Response rates of 15 to 40 percent are common among existing customers. Guard against bias by surveying a representative sample rather than only recent buyers or only people who contacted support.

How do you close the loop on NPS feedback?

Closing the loop means acting on individual responses. Route detractors to a person within 48 hours to fix the named problem, ask passives what one change would earn a 9, and invite promoters to refer, review, or provide a case study. Tag the open-ended comments by theme so the most frequent issues guide what you fix first.