CSAT, NPS and CES: Which Support Metric Actually Matters
· Wallu Team · 15 min read · Best Practices
Measure what matters. Learn how to track, analyze, and improve customer satisfaction with the right metrics for modern support teams.
Table of Contents
- Why Measure Customer Satisfaction
- CSAT: Customer Satisfaction Score
- NPS: Net Promoter Score
- CES: Customer Effort Score
- Which Metric to Use When
- Benchmarks by Industry
- How to Improve Your Scores
- Measuring AI Support Quality
- Conclusion
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Why Measure Customer Satisfaction
What gets measured gets improved. But measuring wrong leads you astray.
The business case:
- 5% increase in retention = 25-95% increase in profit
- Unhappy customers tell 9-15 people about bad experiences
- Happy customers are 5x more likely to repurchase
CSAT: Customer Satisfaction Score
What It Is
A simple rating of satisfaction with a specific interaction, typically 1-5 stars.
How to Calculate
CSAT = (Number of Satisfied Responses / Total Responses) × 100. "Satisfied" typically = 4-5 stars.
Good CSAT Scores
- Below 70%: Needs improvement
- 70-80%: Average
- 80-90%: Good
- 90%+: Excellent
| Pros | Cons |
|---|---|
| Easy to understand | Doesn't predict loyalty |
| Quick to collect | Recency bias |
| Actionable | Culture affects responses |
NPS: Net Promoter Score
What It Is
"How likely are you to recommend us to a friend?" (0-10 scale)
How to Calculate
NPS = % Promoters (9-10) - % Detractors (0-6). Passives (7-8) are excluded.
NPS Ranges
- -100 to 0: Poor
- 0 to 30: Good
- 30 to 70: Great
- 70+: World class
CES: Customer Effort Score
What It Is
"How easy was it to resolve your issue?" Measures friction.
Why It Matters
Effort is the #1 predictor of customer disloyalty. Customers remember frustration.
Which Metric to Use When
| Scenario | Best Metric | Why |
|---|---|---|
| After support ticket | CSAT | Immediate satisfaction |
| After complex issue | CES | Did we make it easy? |
| Quarterly check-in | NPS | Relationship health |
| After AI resolution | CSAT + CES | Was it satisfying AND easy? |
Recommendation: Use CSAT for tactical, NPS for strategic, CES for friction detection.
Benchmarks by Industry
| Industry | CSAT | NPS | CES |
|---|---|---|---|
| SaaS | 78% | 41 | 5.2 |
| E-commerce | 80% | 45 | 5.5 |
| Financial Services | 75% | 35 | 4.8 |
| Telecommunications | 68% | 20 | 4.2 |
How to Improve Your Scores
For CSAT
- Reduce response time (biggest impact)
- First-contact resolution (solve it completely)
- Empathy in communication (tone matters)
For NPS
- Deliver consistent quality
- Exceed expectations occasionally
- Act on feedback publicly
For CES
- Reduce steps to resolution
- Self-service for simple issues
- Don't make customers repeat themselves
Measuring AI Support Quality
AI-Specific Metrics
| Metric | What It Measures |
|---|---|
| AI Resolution Rate | % of tickets fully resolved by AI |
| Escalation Rate | % of AI conversations needing human |
| AI CSAT | Satisfaction specifically for AI interactions |
Comparing AI vs Human
| Metric | AI | Human |
|---|---|---|
| Response Time | 0-5 seconds | 2-8 hours |
| CSAT (typical) | 4.2/5 | 4.5/5 |
| Consistency | 100% | Variable |
| Availability | 24/7 | Business hours |
Conclusion
Metrics matter, but action matters more. Use CSAT for immediate feedback, NPS for long-term relationship health, and CES to reduce friction.
