Cost Per Contact Call Center: Formula and Benchmarks

Most call centers track cost per contact, but not everyone calculates it the same way. That's where the confusion begins.

At first, the formula looks easy. But once you decide which costs to include, and which ones to leave out, the number can change quite a bit. Without a consistent method, comparing one call center with another doesn't tell you much.

So, what should you include? What's considered a good average? And what really drives this metric?

This blog answers those questions. You'll learn how to calculate cost per contact correctly, understand the factors that affect it, and find practical ways to lower costs without reducing service quality.

What Is Cost Per Contact in a Call Center?

Cost per contact is the average cost of handling one customer interaction. You calculate it by dividing your total call center operating costs by the total number of customer contacts handled during the same period.

A contact can be a phone call, live chat, email, social media message, or any other customer interaction your team handles.

Formula

Cost per Contact = Total Call Center Operating Costs ÷ Total Customer Contacts Handled

How to Calculate Cost Per Contact in a Call Center

Calculating cost per contact is simple once you know what to include.

Formula

Cost per Contact = Total Call Center Operating Costs ÷ Total Customer Contacts Handled

The math is easy. The important part is making sure you include the right costs and count contacts consistently every time.

Step 1: Choose the Time Period and Channel

Start by choosing a reporting period, such as a month or a quarter. A full month is usually the best choice because it gives a more reliable picture than a few days or a single week.

Next, decide what you want to measure:

If possible, calculate both. A combined number gives an overall view, while separate numbers show which channels cost more or less to operate.

Step 2: Add Your Operating Costs

Include all the regular costs of running your call center during that period.

Step 3: Count Customer Contacts

Next, count every customer interaction handled during the same period.

A contact can be:

To keep your numbers accurate:

Step 4: Calculate the Cost Per Contact

Once you have total operating costs and total customer contacts, divide the costs by the contacts.

Example

Cost per Contact = $362,000/46,500 = $7.78

This means the call center costs an average of $7.78 to handle one customer interaction.

That's it. Repeat the same calculation every month using the same cost categories and counting method. This keeps your results consistent and makes it easier to compare performance over time.

What Is a Good Average Cost Per Contact in a Call Center?

There isn't a single "good" cost per contact that applies to every call center. The right number depends on several factors, including your support channels, location, customer needs, staffing model, and the costs included in your calculation.

That's why comparing your cost per contact with a published industry average can be misleading. Instead of focusing only on industry averages, compare your current cost per contact with your own historical performance. If you're calculating the metric consistently every month, you'll be able to see whether your call center is becoming more efficient over time.

Industry benchmarks can still be useful, but only if they use a calculation method that's similar to yours. Otherwise, the comparison may not give you an accurate picture of your performance.

What Affects Cost Per Contact in a Call Center?

Many people think technology is the biggest factor behind cost per contact. Here are the four factors that have the biggest effect on cost per contact.

1. Shrinkage

Shrinkage is the time agents are paid but are not available to handle customer contacts. This includes breaks, meetings, training, coaching, sick leave, and system downtime.

Higher shrinkage means fewer agents are available to answer customers, even though the business is still paying for that time. As a result, the cost of handling each customer's contact increases.

2. Schedule Adherence

Schedule adherence measures whether agents are available when they are supposed to be.

Even small delays can reduce productivity. For example, if several agents start late or return late from breaks every day, the team handles fewer customer contacts. The operating costs stay the same, so the cost per contact goes up.

Good workforce planning and real-time monitoring can help improve schedule adherence.

3. Average Handle Time (AHT)

Average Handle Time (AHT) is the average time an agent spends handling one customer interaction. It includes talk time, hold time, and after-call work.

When agents spend less time on each contact, they can help more customers, which usually lowers the cost per contact.

However, reducing AHT should never come at the expense of customer service. If agents rush calls and customers have to contact support again, costs can increase over time.

4. Repeat Contacts

A repeat contact happens when a customer reaches out again about the same issue.

Every repeat contact requires more agent time, which increases operating costs. A high repeat contact rate often points to problems with first-contact resolution, agent training, or internal processes.

Reducing repeat contacts not only improves customer satisfaction but also lowers your overall support costs.

6 Proven Ways to Lower Cost Per Contact

How Time Champ Helps Reduce Cost Per Contact

Time Champ is an employee monitoring software that gives you real-time visibility into how employee time is spent. It helps you improve workforce efficiency, reduce idle time, and optimize staffing; it supports your efforts to lower cost per contact without affecting service quality.

1. Attendance & Shift Management

Monitor attendance, shift schedules, late logins, and absences in real time. This helps ensure the right number of agents are available when customer demand is highest, improving schedule adherence and reducing staffing gaps.

2. Productivity Monitoring

Track productive, unproductive, and idle time to understand how agents spend their workday. These insights help managers identify productivity gaps and improve workforce efficiency.

3. Idle Time Tracking

Identify periods when agents are inactive during working hours. Reducing unnecessary idle time helps improve agent utilization and lowers the cost of handling each customer interaction.

4. Workforce Analytics

Access detailed reports on employee activity, productivity, and utilization. These insights make it easier to optimize staffing, balance workloads, and make data-driven workforce decisions.

5. Call Recording

Review customer interactions to identify coaching opportunities, improve agent performance, and increase first-contact resolution. Resolving issues the first time helps reduce repeat contacts and unnecessary support costs.

Conclusion

Cost per contact is more than just a number; it shows how efficiently your call center handles customer interactions. When you calculate it the right way and track it consistently, it becomes easier to find areas for improvement and control operating costs. Focus on the factors that have the biggest impact, such as workforce efficiency, scheduling, and first-contact resolution. Small improvements in these areas can lower costs while still delivering a great customer experience.

Frequently Asked Questions

Quick answers to the questions people ask most

Why is voice support more expensive than chat?

Voice support usually costs more because one agent can handle only one phone call at a time. With live chat, agents can often manage multiple conversations at once, making chat more cost-effective.

What is the difference between cost per contact and cost per ticket?

Cost per contact measures the cost of every customer interaction, such as calls, chats, and emails. Cost per ticket measures the cost of resolving logged support tickets. A single ticket may involve multiple customer contacts.

What is cost per resolution?

Cost per resolution measures how much it costs to completely resolve a customer's issue rather than simply handle an interaction. Tracking both cost per contact and cost per resolution gives a more complete view of call center performance.

What is call center shrinkage?

Call center shrinkage is the time agents are paid but are unavailable to handle customer contacts. It includes breaks, meetings, training, leave, and system downtime. Higher shrinkage reduces productivity and increases cost per contact.

How often should cost per contact be calculated?

Most organizations calculate cost per contact every month. Monthly reporting helps track trends, measure efficiency, and identify opportunities to reduce operating costs.

Jahnavi Pulluri

Content Writer

A writer by profession and a music lover at heart, Jahnavi Pulluri is a Content Writer at Time Champ specializing in employee management, workplace culture, and team performance tracking. She creates practical guides on remote work policies, employee engagement, and workforce efficiency for HR professionals building transparent work environments. She turns complex workforce topics into stories that actually connect.