Metrics that Matter: The Must-Have Call Center KPIs for 2025
Call Center

Metrics that Matter: The Must-Have Call Center KPIs

Sophia Williams
Sophia Williams
June 26, 2023
Last updated on:

February 20, 2025

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Read time: 4 mins

In a bustling call center, dozens of agents handle customer inquiries and resolve issues daily. Every call that comes in represents a potential opportunity for growth and customer satisfaction but carries a certain level of risk. As a business owner, you should understand the importance of staying on top of your call center's performance and making informed decisions. This is where call center Key Performance Indicators (KPIs) come into play.

KPIs serve as a compass and guide businesses with in-house or external call centers toward success by providing vital insights into the performance and efficiency of their operations. By tracking specific metrics, such as average call resolution time, customer satisfaction ratings, or agent adherence to scripts, call center managers can gauge the effectiveness of their teams and make data-driven decisions to improve overall performance.

However, the number of available call center KPIs can overwhelm business owners. With hundreds of potential metrics to choose from, how can you ensure that you focus on the ones that truly matter? Selecting the right KPIs is crucial to accurately assess the health of your call center and pinpoint areas that need improvement.

To overcome this confusion, aligning your chosen call center KPIs with your business goals and objectives is essential. Identify the specific outcomes you would want to achieve and then select the metrics that directly measure progress toward those goals. 

This blog discusses the critical call center KPIs businesses should track to boost operational efficiency, improve agent performance, and enhance customer satisfaction.

What are call center KPIs? A definition

A call center KPI (Key Performance Indicator) is a metric used to evaluate the effectiveness and efficiency of a call center's operations. These KPIs help managers monitor performance, identify areas for improvement, and ensure that the call center meets its goals.

Gartner forecasts that by 2026, conversational AI will lead to an $80 billion reduction in labor costs for contact center agents.

Why Should Businesses Track Key Call Center KPIs? 

Tracking key call center performance metrics helps businesses streamline workflows, improve customer satisfaction, and make data-driven decisions. Here’s why monitoring these KPIs is essential:

Delivering Better Customer Experiences

Customer interactions shape brand perception, and every call presents an opportunity to build trust. Tracking KPIs like First Call Resolution (FCR) and Customer Satisfaction Score (CSAT) helps businesses identify pain points, reduce service friction, and proactively enhance the overall customer journey. By analyzing these metrics, businesses can refine their support strategies and ensure consistently positive experiences.

Maximizing Operational Efficiency

Every second counts in a call center and inefficiencies can lead to higher costs and frustrated customers. Metrics like Average Speed of Answer (ASA) and Average Handle Time (AHT) help pinpoint bottlenecks, optimize staffing, and ensure that customer queries are resolved promptly. By continuously monitoring these KPIs, businesses can fine-tune their processes, eliminate unnecessary delays, and improve productivity at scale.

Making Data-Driven Business Decisions

Reliable data is the foundation of strategic decision-making. KPIs like Service Level Agreement (SLA) Compliance and Occupancy Rate provide insights into performance trends, allowing leaders to make informed choices about workforce planning, technology investments, and customer service improvements. When guided by real-time data, businesses can adjust their strategies to maintain high service standards while controlling costs.

Empowering Agents for Peak Performance

Agents are at the heart of customer service, and their well-being directly impacts performance. Tracking Employee Satisfaction Score (ESS) and AHT per Agent helps businesses identify training gaps, workload imbalances, and areas where agents may need additional support. Ensuring fair scheduling, ongoing training, and stress management initiatives based on KPI insights leads to a motivated workforce that delivers exceptional customer service.

Important Call Center KPIs Businesses Should Track for Success in 2025

Here are some of the must-have call center key performance indicators to foster a thriving customer-centric environment:

  1. Call Initiation KPIs

Call initiation KPIs measure the efficiency of handling inbound and outbound calls at the very first stage of customer interaction. These KPIs ensure customers connect quickly and efficiently without long hold times, misrouted calls, or unnecessary delays. Long wait times and abandoned calls can frustrate customers, leading to higher churn rates and lost revenue. Monitoring these KPIs helps businesses optimize their call-handling process and improve customer retention.

  1. Average Speed of Answer (ASA)

ASA measures how quickly an agent picks up an incoming call after a customer dials in. A low ASA indicates efficient call handling, reducing customer frustration. However, a high ASA suggests customers wait too long, potentially leading to call abandonment.

Formula:

ASA= Total Wait Time for Answered Calls / Total Number of Answered Calls​

Example:
A company receives 1,000 calls in a day. The total time customers spend waiting before speaking to an agent is 10,000 seconds.

Here ASA= 10,000/1,000 =10  seconds

This means, on average, customers wait 10 seconds before an agent answers their call.

  1. Call Abandonment Rate

This metric tracks how many customers hang up before speaking to an agent. A high call abandonment rate indicates long wait times, inefficient call routing, or staffing issues, which negatively impact customer satisfaction.

Formula:

Call Abandonment Rate= Abandoned Calls/ Total Incoming Calls / ​×100

Example:
If a business receives 2,000 calls in a day, and 200 customers hang up before speaking to an agent, then:

Call Abandonment Rate = 200/ 2000 ​×100 =10%

This means 10% of potential customers never get through, which could lead to lost sales and negative brand perception.

B. Call Center Performance KPIs

KPIs measure the overall efficiency of a call center, ensuring that the team meets service goals, handles call volumes effectively, and minimizes inefficiencies. Tracking these KPIs helps businesses identify bottlenecks, improve response times, and enhance customer service quality.

  1. Service Level Agreement (SLA) Compliance

SLA compliance measures whether a call center meets agreed-upon service goals, such as answering a certain percentage of calls within a defined time (e.g., 80% of calls answered within 30 seconds). Poor SLA compliance may result in contractual penalties, customer dissatisfaction, and loss of business opportunities.

Formula:

SLA Compliance = Calls Answered within SLA Time​/ Total Calls Received X 100

Example:

If a call center receives 1,000 calls and 850 of them are answered within the agreed 30-second threshold:

SLA Compliance = 850 /1000 X 100 = 85%

This means 85% of calls meet the service-level agreement, while 15% exceed the expected wait time, potentially impacting customer satisfaction.

  1. Call Transfer Rate

This KPI tracks the percentage of calls that need to be transferred to another department or agent. A high transfer rate suggests that calls are not reaching the right agent initially, leading to longer resolution times and frustrated customers.

Formula:

Call Transfer Rate = Number of Transferred Calls​ / Total Calls Handled X 100

Example: 

If 250 out of 1,000 calls require a transfer to another department:

Call Transfer Rate = 250/1000 X 100 = 25%

This means one in every four calls is not resolved by the first agent, which leads to inefficiencies in call handling.

C. Agent Productivity Call Center KPIs

These KPIs measure how effectively call center agents handle customer interactions, ensuring that they remain productive without being overburdened. Agent productivity KPIs help businesses balance workloads, optimize workforce efficiency, and improve overall service quality.

  1. Occupancy Rate

Occupancy rate tracks the amount of time agents spend actively handling calls or doing after-call work compared to their total available time.

Formula:

Occupancy Rate = Total Talk Time + Hold Time + After-Call Work Time​ / Total Available Time X 100

Example:

If an agent works an 8-hour shift (28,800 seconds) and spends 20,000 seconds handling calls and after-call work:

Occupancy Rate = 20,000 / 28,800 X 100 = 69.4%

This means the agent spends 69.4% of their shift on active call-related tasks, with 30.6% of their time unutilized.

  1. Average Handle Time (AHT)

AHT measures the total time an agent spends handling a call, including talk time, hold time, and after-call work. A lower AHT generally indicates efficient service, but an extremely low AHT may suggest agents are rushing through calls, negatively impacting customer satisfaction.

Formula:

AHT = Total Talk Time+Total Hold Time+Total After-Call Work Time​ / Total Number of Calls Handled 

Example:

If an agent handles 50 calls in a shift, and the total talk time, hold time, and after-call work sum up to 10,000 seconds:

AHT = 10,000 / 50 = 200 seconds (3minutes & 20seconds)

Did You Know?
29% of agent satisfaction comes from job security and promotional opportunities at the company. 

D. Customer Experience Call Center KPIs

Customer experience key performance indicators measure how satisfied customers are with the service they receive. A strong customer experience results in higher retention rates, positive brand perception, and increased customer loyalty.

  1. Customer Satisfaction Score (CSAT)

CSAT directly measures how happy customers are after interacting with a call center. A high CSAT indicates that customers had a smooth and satisfactory experience, while a low score signals issues with service quality, response times, or agent behavior.

Formula:

CSAT = Total Positive Survey Responses​ / Total Survey Responses X 100

Example:

If 1,000 customers complete a satisfaction survey, and 850 rate their experience positively:

CSAT = 850/ 1000 X 100 = 85%

This means 85% of customers were satisfied, but 15% found issues with the service.

  1. First Call Resolution (FCR)

FCR measures the percentage of customer inquiries or issues resolved on the first call without the need for follow-ups. A high FCR means customers receive efficient, effective support, reducing frustration and increasing trust in the business.

Formula:

FCR = Number of Issues Resolved on First Call​ / Total Number of Calls X 100

Example: 

If a company handles 5,000 customer calls in a month and 3,750 are resolved in the first interaction:

FCR = 3750/5000 X 100 = 75%

This means 75% of customers have their issues resolved immediately, while 25% require follow-ups, which could indicate complex issues or gaps in agent training.

What are the four 4 commonly used KPIs used in a call center?

The four commonly used call center KPIs are:
Agent Handle Time (AHT), First Call Resolution (FCR), Service Level, and Customer Satisfaction (CSAT) score. All these four metrics play a crucial role in assessing call center performance and driving operational efficiency.

What is a call center KPI scorecard?

A call center KPI scorecard template is a tool used to measure and monitor the performance of a call center. It helps in tracking key metrics that are crucial for assessing the efficiency, effectiveness, and overall quality of the call center's operations. The scorecard typically includes a variety of KPIs that align with the call center's goals and objectives.

Unleash Call Center Success With These Best Practices
Figure 1: Top 10 Call Center Best Practices

Call Center KPI Benchmarks by Industry

What is the Difference Between Accounts Receivable and Aging Report

KPIs Finance & Banking Healthcare eCommerce
Average Speed of Answer (ASA) 15-25 seconds 30-60 seconds 20-30 seconds
Customer Satisfaction Score (CSAT) 85-90% 85-95% 80-90%
Average Handle Time (AHT) 6-8 minutes 7-9 minutes 5-7 minutes

First Call Resolution (FCR)

85-90% 80-90% 70-80%

Service Level Agreement (SLA) Compliance

90-95% 85-95% 80-90%

Call Abandonment Rate

2-4% 5-10% 4-6%

Occupancy Rate

80-85% 65-75% 75-85%

Benefits of Measuring Call Center KPIs

Here are the benefits of measuring Call Center/Service Center KPIs:

  1. Performance Insights: KPIs provide clear visibility into agent performance and operational efficiency.
  2. Quality Improvement: Helps identify areas needing improvement in service quality and customer satisfaction.
  3. Resource Optimization: Enables efficient allocation of resources like staffing and technology based on demand patterns.
  4. Goal Alignment: Aligns agent goals with organizational objectives, enhancing overall productivity and service delivery.
  5. Continuous Improvement: Facilitates ongoing enhancements in processes and customer interactions for sustained service excellence.

Implementing Call Center KPIs - A Case Study:

A leading insurance company faced inconsistencies in service-to-sales performance across its contact centers, resulting in suboptimal sales conversions and customer satisfaction. The company's leadership identified wide variations in how different centers handled customer interactions, impacting overall efficiency and effectiveness.

The company undertook a comprehensive transformation of its call center operations. They enhanced training programs, focusing on customer needs, active listening, and effective sales techniques. Skill-based call routing was implemented, ensuring customers were directed to the most qualified agents. A new performance management system was introduced, with a points-based rewards scheme to incentivize desired behaviors and share best practices.

These initiatives led to a 40% increase in sales conversions from service calls. Additionally, average handling times stabilized, and customer satisfaction improved significantly. This transformation demonstrated how aligning KPIs with strategic goals and investing in agent capabilities can drive substantial performance improvements in call centers. (Source: McKinsey)

What are inbound call center KPIs?

An inbound call center Key Performance Indicator (KPI) is a measurable value used by call centers to evaluate their success in achieving specific operational and customer service goals. These KPIs help call centers monitor performance, identify areas for improvement, and ensure customer satisfaction.

What are inbound call center KPIs?

An inbound call center Key Performance Indicator (KPI) is a measurable value used by call centers to evaluate their success in achieving specific operational and customer service goals. These KPIs help call centers monitor performance, identify areas for improvement, and ensure customer satisfaction.

Tips for Improving Call Center KPIs

Here are some tips for improving Call Center KPIs:

  1. Define Clear Metrics: Align KPIs with business goals and ensure they are specific, measurable, achievable, relevant, and time-bound (SMART).
  2. Agent Training and Development: Invest in continuous training to improve skills and knowledge, enhancing performance metrics like first call resolution and average handling time.
  3. Implement Technology Solutions: Integrate advanced call center software for better data analytics, customer relationship management (CRM), and automation to streamline operations.
  4. Feedback Mechanisms: Establish regular feedback loops for agents and supervisors to identify areas of improvement and implement corrective actions.
  5. Performance Incentives: Motivate agents with incentives tied to KPI achievement, fostering a culture of accountability and high performance.
  6. Monitor and Adjust: Regularly review KPI performance, identify trends, and adjust strategies accordingly to optimize efficiency and customer satisfaction.

How to Choose the Right KPIs for Your Call Center

Selecting the right Key Performance Indicators (KPIs) is essential for monitoring the success of your call center and aligning its performance with broader business goals. Here’s a structured approach to ensure your KPIs are effective and actionable:

Define Your Call Center’s Objectives

Start by clarifying your call center’s primary role. Is it focused on customer service, sales, technical support, or a mix? The KPIs you choose must reflect these objectives. For example:

  • A sales call center may prioritize conversion rates and revenue per call.
  • A customer support center might focus on first-call resolution (FCR) and customer satisfaction (CSAT).
  1. Align with Business Goals
    Your call center KPIs should directly contribute to your organization’s overall goals. If your company aims to enhance customer retention, choose metrics like Net Promoter Score (NPS) or Customer Effort Score (CES). If cost efficiency is a priority, focus on average handling time (AHT) and cost per contact.
  2. Prioritize Customer Expectations
    Understanding what your customers value most is crucial. If your customers demand quick responses, average speed of answer (ASA) and call abandonment rate become critical KPIs. For more personalized interactions, track metrics like customer sentiment or quality of service scores.
  3. Consider Operational Efficiency
    Evaluate internal performance and productivity metrics to identify inefficiencies. KPIs like agent utilization rate, schedule adherence, and occupancy rate can help optimize resource allocation and reduce operational costs.
  4. Ensure KPIs Are Measurable and Achievable
    Establish regular feedback loops for agents and supervisors to identify areas of improvement and implement corrective actions.
  5. Performance Incentives:
    Choose KPIs that are quantifiable, easy to track, and actionable. Use reliable tools such as customer relationship management (CRM) systems or call center analytics platforms to collect accurate data and monitor progress consistently.
  6. Adapt to Call Center Type and Scale
    Different types of call centers require different KPIs. For instance:
    • Inbound call centers may focus on FCR, call abandonment rate, and CSAT.
    • Outbound centers might prioritize calls per agent and conversion rates.

Invensis's Call Center KPI Tracking Services

Optimize your call center operations and enhance performance with our expert KPI tracking solutions. We help you measure and analyze key metrics to drive efficiency, improve customer satisfaction, and boost agent productivity.

Benefits You Gain:

  • Improved Operational Efficiency
  • Enhanced Customer Satisfaction
  • Data-Driven Decision Making
  • Optimized Agent Performance

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Conclusion

Implementing and tracking the right KPIs is essential for optimizing call center operations and driving continuous improvement. As business owners, it is crucial to understand that monitoring, analyzing, and adjusting KPIs should not be a one-time effort but an ongoing process. 

Consistently monitoring KPIs enables you to stay ahead of the curve in an ever-evolving customer service landscape. Technology advancements, customer preferences, and market dynamics are constantly changing, and adjusting KPIs helps you adapt and respond effectively to these shifts. Furthermore, fostering a culture of continuous improvement within your call center is critical for long-term success. Encourage your team to actively engage with KPIs, seeking ways to improve their individual and collective performance. 

Ultimately, the success of your call center hinges on your ability to harness the power of KPIs and drive continuous improvement. Contact Invensis today to embrace the transformative potential of call center KPIs and how customer support becomes a strategic asset that propels your business forward in today's competitive landscape.

Frequently Asked Questions

1. What is the KPI dashboard for a call center?

A KPI dashboard for a call center tracks key performance indicators (KPIs) such as average call handling time, first call resolution rate, customer satisfaction scores, and agent occupancy. It provides real-time metrics to monitor operational efficiency, service levels, and overall performance, helping to optimize call center operations and customer experience.

2. What are good KPIs for customer service?

Good KPIs for customer service include First Response Time (speed of initial reply), Customer Satisfaction Score (CSAT), Net Promoter Score (NPS), Average Resolution Time (time to resolve issues), First Contact Resolution (issues resolved in the first interaction), Customer Retention Rate, and Customer Effort Score (ease of service experience). These metrics help assess efficiency, effectiveness, and customer loyalty, guiding improvements in service quality and customer relationships.

3. What are the most important metrics in a call center?

The most important metric in a call center is the First Call Resolution (FCR) rate. This metric measures the percentage of customer issues resolved on the first call, reflecting the effectiveness and efficiency of the service provided. A high FCR indicates that agents are well-equipped to handle inquiries and problems, leading to higher customer satisfaction, reduced operational costs, and improved overall performance.

4. What is the main KPI of customer service?

The main KPI of customer service is Customer Satisfaction (CSAT). It measures how well customer expectations are met through surveys and feedback. High CSAT scores indicate successful service interactions, leading to customer loyalty and positive word-of-mouth. Other important KPIs include First Response Time (FRT), Customer Retention Rate, and Net Promoter Score (NPS), but CSAT remains the central metric for assessing overall customer service effectiveness.

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