A client satisfaction score, usually called CSAT, is the percentage of customers who say they were satisfied with a specific interaction, purchase or service. It is the most direct measure of service quality because it asks the person who received it.
It is the measure clients most often ask a support team to report, so this guide covers the practical side: how to ask, how to calculate, and what changes the result.
How to calculate CSAT
Ask one question after an interaction: "How satisfied were you with the service you received today?" Offer a five point scale from very dissatisfied to very satisfied.
CSAT = number of satisfied responses ÷ total responses × 100
Satisfied usually means the top two answers, 4 and 5.
A worked example
You receive 200 survey responses in a month. Of those, 150 chose 4 or 5. Your score is 150 ÷ 200 × 100 = 75%.
Keep the method fixed. If you change the scale, the wording or which answers count as satisfied, you can no longer compare months.
When to send the survey
- Immediately after the interaction, while the experience is fresh.
- After the issue is resolved, not while it is still open.
- Through the same channel the customer used, where possible.
- Not after every contact from the same person in a short period.
Add one optional open question: "What is the main reason for your score?" The comments explain the number.
CSAT, NPS and customer effort
- CSAT measures satisfaction with one interaction. It is best for judging service quality day to day.
- Net Promoter Score asks how likely a customer is to recommend you. It measures the overall relationship.
- Customer Effort Score asks how easy it was to get something done. It is a strong signal of whether customers will stay.
They answer different questions. Many teams use CSAT after each interaction and one of the others a few times a year.
What counts as a good score
It depends on your industry and on how you ask. Scores from a phone survey and an email survey are not directly comparable, and neither are scores from different scales. The American Customer Satisfaction Index publishes national and industry figures that give useful context.
The most reliable benchmark is your own trend. A score that rises steadily under a fixed method tells you more than a comparison with someone else’s number.
What moves the score
- Speed of answer. Long waits lower satisfaction before the conversation starts.
- Resolution on the first contact. Having to call back is among the biggest causes of low scores. See our guide to first call resolution.
- Knowledge. Customers notice when an agent understands the product without putting them on hold.
- Tone. Being listened to matters as much as the outcome.
- Follow through. Doing what was promised, when it was promised.
How to improve CSAT
- Read every low score comment each week and group them by cause.
- Fix the most common cause first. It is usually a process problem, not an agent problem.
- Call back unhappy customers. A recovered complaint often produces a loyal customer.
- Give agents the authority to resolve common issues without a transfer.
- Keep the same agents on the account so knowledge builds.
- Share the score and the comments with the whole team.
Pitfalls to avoid
- Low response rates. A score from a handful of replies is noise.
- Surveying only happy customers. Send it to everyone, or to a random sample.
- Rewarding agents for the score alone. It encourages asking for good ratings.
- Chasing the number and ignoring the comments.
- Comparing scores collected with different methods.
How it connects to revenue
Satisfied customers stay longer and buy again, which raises customer lifetime value. That link is why CSAT belongs in a management report and not only on the support team’s wall.
Where a dedicated team helps
Scores tend to be higher when the same people handle your customers every day, because knowledge builds and customers stop repeating themselves. That is the model behind our customer support outsourcing. A dedicated team cannot fix a product or policy customers dislike, and the survey comments will tell you when that is the real cause.
Frequently asked questions
How do you calculate a client satisfaction score?
Divide the number of satisfied responses, usually 4 and 5 on a five point scale, by the total number of responses and multiply by 100.
What is a good CSAT score?
It varies by industry and survey method. Track your own trend with a fixed method and use published indexes such as the ACSI for context.
What is the difference between CSAT and NPS?
CSAT measures satisfaction with a single interaction. NPS measures how likely a customer is to recommend the company overall.
How often should you measure CSAT?
After interactions, continuously, and review it weekly with the comments.
Sources
About eleVAte BPO. eleVAte began in 2015 with two virtual assistants in Dumaguete City, Philippines, and is still run by its founders. Co-Founder and CEO Claire De La Pena spent almost two decades as an executive virtual assistant before building the company, which is now a 50 seat operation providing dedicated support, sales and back office teams. Meet the leadership team.
Last reviewed October 2026. This guide is general information and not legal, tax or financial advice.
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