In short
CSAT (Customer Satisfaction Score) measures how happy a customer was with a specific interaction - usually a quick rating right after their ticket is resolved. It’s the simplest, most direct read on whether your support is landing.
You can track response times and ticket counts all day, but none of it tells you the one thing that matters: did the customer walk away happy? CSAT asks them directly, at the moment they’d know best - just after you’ve helped them.
The definition
CSAT is a metric that captures satisfaction with a single interaction or experience. In support, it’s typically a one-click survey attached to a resolved ticket: “How would you rate the support you received?” with a simple scale or a thumbs up/down. The customer answers in a second, and you get an honest signal tied to a real conversation.
How CSAT is calculated
The standard formula is straightforward:
So if 90 of 100 people who rated their support were satisfied, your CSAT is 90%. Most teams count the top one or two ratings on the scale as “positive.” It’s the simplicity that makes CSAT so widely used - easy to collect, easy to read, easy to act on.
CSAT vs NPS vs CES
| Metric | What it measures |
|---|---|
| CSAT | Happiness with a specific interaction (right after it happens). |
| NPS | Loyalty - how likely someone is to recommend you overall. |
| CES | Effort - how easy it was to get the issue resolved. |
They answer different questions. CSAT is the natural fit for measuring support quality ticket by ticket.
Why CSAT matters
It turns support quality into a number you can watch and improve. A dip flags a problem early - a confusing new feature, a slow queue, a shaky new hire. And because each rating is attached to a ticket, a low score comes with the exact conversation behind it, so you can learn from it rather than guess.
How to improve your CSAT
- Reply faster - speed and satisfaction are closely linked. Realistic SLAs help here.
- Resolve fully the first time - reopened tickets tank scores.
- Read your low ratings - the ticket behind each one is a free lesson.
- Close the loop - follow up on unhappy responses; a save often becomes a fan.
Start collecting it, watch the trend rather than any single score, and let the tickets behind your worst ratings guide what you fix next. That feedback loop is how good support becomes great.