CS Automation
What Is Customer Satisfaction Score (CSAT)?
Customer satisfaction score, or CSAT, is a simple measure of how happy customers are with a specific interaction or job. You ask a one-question survey, like "How satisfied were you?" on a 1 to 5 scale, and CSAT is the percent of answers that were a 4 or 5. It is quick to collect and easy to understand.
Key Takeaways
- Formula: satisfied responses (4 or 5) ÷ total responses × 100.
- CSAT measures one moment, like a service call, not the whole relationship.
- Ask right after the interaction, with one question, by text.
- The phone experience is part of the score. A long hold lowers it before the tech ever arrives.
How CSAT Works
CSAT is the simplest customer feedback metric there is. One question, one scale, one percentage.
CSAT = number of satisfied responses ÷ total responses × 100
"Satisfied" usually means a 4 or 5 on a 5-point scale. Some businesses use a 3-point scale (unhappy, neutral, happy) or a thumbs up and down. The formula is the same: happy answers over all answers.
The key design choice is timing. CSAT measures a moment, so ask right after the moment. After the service call, after the estimate, after the phone conversation. Wait a week and you are measuring memory, not experience.
Example of CSAT
A plumbing company texts every customer an hour after the job: "Thanks for choosing us! How was your experience today? Reply 1 (poor) to 5 (great)." In a month, 60 customers reply. The breakdown: 38 fives, 13 fours, 6 threes, 2 twos, 1 one.
Satisfied responses: 38 + 13 = 51. CSAT: 51 ÷ 60 = 85%.
The owner calls the three customers who gave a 1 or 2. Two of them mention the same thing: they were on hold for a long time when they first called. The tech was great. The phone was the problem.
What People Get Wrong About CSAT
Owners treat CSAT as a grade for the tech. It is a grade for the whole experience, and the experience starts with the phone. A caller who sat on hold for two minutes, got transferred, and had to repeat themselves arrives at the job already annoyed. The tech can do perfect work and still get a 3.
The other mistake is collecting scores and not reading comments. The percentage tells you something changed. The comments tell you what. Always leave room for a free-text reply.
CSAT vs. NPS vs. Reviews
- CSAT asks how satisfied someone was with one interaction. Short-term, specific.
- NPS (Net Promoter Score) asks how likely someone is to recommend you. Long-term, about the relationship.
- Online reviews are public CSAT from the customers who chose to speak up, which skews toward the very happy and the very unhappy.
A good loop uses CSAT to catch problems privately, then invites the 4s and 5s to leave a public review.
Why It Matters
For a small service business, CSAT is the early warning system. A drop shows up weeks before it shows up in reviews or repeat bookings. And because the phone is the first touchpoint, it is often the first place the score leaks. Answering on the first ring with no hold, getting the details right the first time, and confirming by text all move CSAT before anyone picks up a wrench. An AI receptionist standardizes that first touch. See poor customer service examples for the patterns that drag the score down.
The Bottom Line
Customer satisfaction score is the percent of customers who rated an interaction a 4 or 5 out of 5. Ask one question by text right after the job, read the comments, and remember that the score starts the moment the phone rings, not when the tech shows up.
Frequently Asked Questions
- How do you calculate a CSAT score?
- Ask customers to rate their experience on a scale, usually 1 to 5. Count the responses that were 4 or 5. Divide by the total number of responses and multiply by 100. If 40 customers answered and 34 gave a 4 or 5, your CSAT is 85%.
- What is a good CSAT score?
- For a service business, aim for the high 80s or above. Below 80% usually means something specific is going wrong, and the comments will tell you what. The number matters less than the trend and the reasons. A score that drops from 92% to 84% in a month is a signal, even though 84% is fine on its own.
- How do you collect CSAT without bothering customers?
- One question, sent by text, within an hour of the job. "How did we do today? Reply 1 to 5." Most people will answer a single question. Nobody answers a ten-question email survey. If they give a 4 or 5, follow with a link to leave a public review. If they give a 1 to 3, have a human call them.
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