Definition
First call resolution (FCR) is the share of customer issues that are solved during the first contact, with no follow-up call, callback or repeat contact about the same problem within a set window.
How first call resolution works
FCR = issues solved on first contact / total issues x 100
The metric has two parts that people often skip. The first is who decides an issue is solved. The second is the window in which a repeat contact counts against it. Teams measure it two ways, and the two can disagree.
The first way is a survey. After the call, the customer is asked whether the issue was solved. This captures the customer’s view but depends on who answers. The second way is to match contacts. A system links later calls, chats or emails from the same customer about the same topic to the first one. If none arrive inside the window, the first call counts as resolved. A window of 24 hours to 7 days is common. There is no standard, so the window is part of the definition.
Matching has gaps. A customer may call from a different number, or come back through chat, and the repeat goes unlinked. An unhappy customer who never calls again also looks resolved.
FCR is not the same as resolution rate. Resolution rate asks if the problem was eventually solved. FCR asks if it was solved the first time, so a problem fixed on the second call is resolved and not first-call resolved.
Why it matters for voice agents
A voice agent changes what a “first call” means. If it handles a call, tries to fix the problem, and the customer calls again an hour later to reach a person, FCR for the agent counts as a miss. That repeat is the best evidence of a call the agent only appeared to close.
The practical work is to link calls reliably. Caller ID helps but fails for shared lines and for people who call from a second phone. Where the agent can ask for an account number or an order reference, store it on every call, because that gives a better key than the phone number.
High FCR also tends to lengthen calls. An agent that checks the account, confirms the fix and asks if anything else is open will spend more time per call, which raises average handle time and may still lower the cost per resolved issue.
Example
An illustrative day with a 7 day window (invented numbers):
- 400 customers call about a late delivery.
- 70 call back about the same order within 7 days.
FCR is 330 / 400 = 82.5%. If 25 of the 70 repeat callers reached a human only because the voice agent had misunderstood the order number, those 25 point to the first thing to fix.