Unit economics
Turn promoter and detractor mix into referral pipeline and NPS.
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How do you calculate Net Promoter Score?
Ask "How likely are you to recommend us to a friend or colleague?" on a 0 to 10 scale. Promoters score 9 or 10, passives 7 or 8, detractors 0 to 6. NPS = % promoters − % detractors, using all respondents as the base, so it runs from −100 to +100. With 52% promoters and 18% detractors, NPS is 34.
An NPS of 30 turns your 900 promoters into roughly 180 organic referrals, a growth loop that costs nothing. Detractors are the counterweight, closing their loop protects the referral engine.
NPS predicts word-of-mouth, not just satisfaction. Promoters lower CAC via referrals; detractors quietly raise it by warning others off. Both feed straight into unit economics.
About this calculator
Net Promoter Score is usually reported as a bare number, but it's really a growth-loop input: promoters refer people, detractors warn them off, and both feed straight into your CAC and pipeline. This modeler converts your customer base's promoter and detractor split into an NPS score and estimates the organic referral pipeline your promoters actually generate.
How to use it
- Enter your customer base or survey sample size.
- Enter the percentage who are promoters (survey scores 9-10) and the percentage who are detractors (scores 0-6).
- Enter referrals per promoter, the share of promoters who refer someone else.
- Read your NPS score, its rating band, the number of referrals generated, and net advocacy in raw customer counts.
Methodology
NPS is calculated as promoter percentage minus detractor percentage, the standard NPS formula, note it deliberately ignores passives (scores 7-8), they don't appear anywhere in this calculation, only promoters and detractors are counted.
Promoters and detractors in absolute counts are the customer base times their respective percentages. Referrals generated is promoter count times the referral rate, an estimate of organic pipeline sourced purely from word of mouth. Net advocacy is promoters minus detractors in raw customer counts, the same subtraction as NPS but expressed as people rather than a percentage-point score.
The tool bands NPS into four tiers: 50+ is excellent, 30-49 is good, 0-29 is graded "needs work", and below zero is negative, commonly cited benchmark ranges for interpreting an NPS score across industries.
This model assumes a flat referral rate per promoter and doesn't account for detractors actively discouraging prospects (negative word of mouth), which the verdict text acknowledges qualitatively when detractors outnumber promoters, but isn't quantified into the referral or ARR figures.
NPS and the referral estimate this modeler uses
NPS = Promoters % − Detractors % Promoters = Customers × Promoters % ÷ 100 Detractors = Customers × Detractors % ÷ 100 Referrals generated = Promoters × Referrals per promoter % ÷ 100 Net advocacy = Promoters − Detractors (a count of people)
- Customers surveyed / base
- Either the number of survey respondents or the whole customer base. Use the base only if you are willing to assume non-respondents feel the same way.
- Promoters %
- Share of all respondents who scored 9 or 10.
- Detractors %
- Share of all respondents who scored 0 to 6.
- Referrals per promoter %
- Share of promoters who refer at least one prospect in the period; the tool counts one referral each.
Passives are not entered, but they are still in the base: both percentages are shares of everyone who answered, so passives = 100 − promoters % − detractors %. Converting a passive to a promoter raises NPS by one point per percentage point moved; converting a detractor to a passive raises it by the same amount. The referral line is an estimate you supply, not something NPS measures. To turn referrals into revenue, multiply by your referral-to-customer rate and average contract value, then compare with paid acquisition in the LTV to CAC calculator. The question wording and score bands follow Bain's Net Promoter System.
Worked example: a B2B software company with 800 survey responses
A SaaS company surveys its customers and gets 800 responses: 52% promoters, 30% passives and 18% detractors. From its CRM, about 15% of promoters referred someone in the last year, and 25% of referred prospects became customers (this last rate is worked out by hand; it is not a tool input).
- NPS = 52 − 18 = 34
- Promoters = 800 × 0.52 = 416
- Detractors = 800 × 0.18 = 144
- Referrals generated = 416 × 0.15 = 62.4, about 62 referrals
- Net advocacy = 416 − 144 = 272 people
- New customers from referrals (by hand) = 62.4 × 0.25 = 15.6, about 16 customers
- If onboarding fixes move 10 points of passives to promoters: NPS = 62 − 18 = 44, promoters = 496, referrals = 74.4
An NPS of 34 sits in the tool's "Good" band and above the 2025 median for software companies in Survicate's data (30), but below Retently's 2026 average for B2B software and SaaS (41). The more useful number is the 16 referred customers: if each costs nothing in media, that is pipeline the CAC payback matrix should credit. Moving passives to promoters is worth about 12 more referrals a year at the same referral rate, which gives customer success a concrete target.
Median NPS by industry (2025)
| Industry | Median NPS |
|---|---|
| Manufacturing | 65 |
| Healthcare | 61 |
| Agency & consulting | 59 |
| Retail & ecommerce | 55 |
| Professional services | 50 |
| Fintech | 46 |
| Education | 42 |
| Media | 40 |
| Wholesale | 36 |
| Digital marketplaces | 35 |
| Software | 30 |
Average NPS for selected B2B industries (2026)
| Industry | Average NPS |
|---|---|
| Consulting | 68 |
| Financial services | 68 |
| Technology & services | 63 |
| Logistics & transportation | 42 |
| B2B software & SaaS | 41 |
What is a good NPS?
Compare against your own industry and against your own trend, not a universal number:
- Software and SaaS: a median of 30 in Survicate's 2025 data and an average of 41 in Retently's 2026 benchmarks. A score in the 30s is normal; 50 or more is strong for the category.
- Services and consulting: benchmarks are much higher (59 to 68 in the tables above), so a consulting firm at 34 has a problem that a software company at 34 does not.
- Trend over level: Retently notes that the only good number is one better than your previous score.
Bain reports that companies in its Net Promoter System leader group grow at more than twice the rate of competitors, but NPS predicts growth only through behaviour: referrals, retention and expansion. A decision rule: if NPS is rising but referrals and net revenue retention are flat, the survey is measuring politeness, not loyalty. Close the loop with detractors first; the B2B churn playbook covers how.
Running NPS in India vs the US
Indian teams often survey on WhatsApp as well as email, and the channel changes who answers. Compare scores only within the same channel, and record the channel on every response. For D2C brands with cash-on-delivery orders, survey after delivery, not after order, or detractors from failed deliveries will be missing from the base. Referral value per customer is lower in rupees, but so is acquisition cost, so judge referrals against your rupee CAC. If you need help tying survey responses to CRM records, see HubSpot consulting in India or Zoho CRM consulting.
US B2B buyers are surveyed often, so response rates fall and the people who answer skew towards the very happy and the very unhappy. Report the response rate next to the score. In account-based businesses, survey several roles per account and look at NPS by role: a champion at 10 and an economic buyer at 5 is a renewal risk the blended score hides. Referred customers are worth tracking separately: a study of a German bank found referred customers had 16% to 25% higher long-term value and were about 18% more likely to stay (Knowledge at Wharton).
Common NPS mistakes
- Calculating promoters and detractors as shares of promoters plus detractors only, leaving passives out of the base, which inflates the score.
- Applying a survey sample's percentages to the whole customer base without checking whether respondents are representative.
- Comparing NPS across channels, survey timings or question wordings as if they were the same measure.
- Reporting NPS without the number of responses; a 10-point swing on 40 responses is noise.
- Treating the referral rate as a fixed fact rather than an assumption to measure from the CRM.
- Collecting scores without following up with detractors, so the survey changes nothing.
Sources
- Measuring Your Net Promoter Score, Bain & Company, Net Promoter System. Accessed 2026-10-18.
- NPS Benchmarks 2025, Survicate. Accessed 2026-10-18.
- What is a Good Net Promoter Score? (2026 NPS Benchmark), Retently. Accessed 2026-10-18.
- Turning Social Capital into Economic Capital: Straight Talk about Word-of-mouth Marketing, Knowledge at Wharton (reporting Schmitt, Skiera and Van den Bulte). Accessed 2026-10-18.
FAQ
That's how NPS is defined: it's deliberately a measure of the gap between actively enthusiastic and actively unhappy customers, passives are neutral, so they add nothing to the promoter or detractor percentage, but they stay in the denominator because both percentages are shares of all respondents. More passives therefore pull the score towards zero.
NPS is a sentiment score, a snapshot of how customers feel. Referrals generated translates that sentiment into an estimated pipeline number, promoter count times your referral rate, giving you a tangible growth-loop figure to weigh against paid acquisition costs, rather than just a satisfaction metric.
This tool treats 50+ as excellent and 30-49 as good, in line with commonly used industry bands, though the "right" target varies by category, some B2B software categories see healthy scores in the 20s-40s, while some consumer categories expect higher. Track your trend over time as much as the absolute number.
Only qualitatively, the verdict text flags it when detractors outnumber promoters, but the referral and pipeline figures don't subtract a negative word-of-mouth effect. In reality, detractors can raise CAC by discouraging prospects, a real cost this calculator doesn't quantify directly.
No. NPS is the difference between two percentages, so it is reported as a plain number from −100 to +100. An NPS of 34 means promoters outnumber detractors by 34 percentage points of respondents, not that 34% of customers are happy.
There is no single threshold, but small samples swing a lot: with 50 responses, each person moves the score by 2 points. Track the number of responses next to the score, compare quarters only when sample sizes are similar, and look at trends over several periods before acting.
Relationship NPS asks about the company overall on a regular schedule, such as each quarter. Transactional NPS asks right after an event, such as onboarding or a support ticket. Relationship scores are better for tracking loyalty; transactional scores are better for finding which touchpoint creates detractors.
Follow up with detractors quickly to fix the cause, and study what promoters have in common so you can repeat it. Because passives count in the base, moving them to promoters raises the score as much as removing detractors. Changing the survey timing to catch happier moments raises the number without improving loyalty, so avoid it.
In the best-known study, of a German bank's referral programme, referred customers had 16% to 25% higher long-term value and were about 18% more likely to stay. Results in your business will differ, so tag referred deals in the CRM and compare their retention and contract value with other customers.
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