The Cost Breakdown of Building an Internal Call Center

For growing businesses, delivering high-quality customer support is no longer optional—it’s a competitive necessity. social media Many organizations considering long-term growth face a key decision: should they build and operate an internal call center, or explore outsourced and on-demand staffing solutions?

Building an in-house call center gives companies direct control over customer experience, but it also comes with significant upfront and ongoing costs. Understanding the full cost breakdown is critical for business leaders, HR teams, and operations managers weighing this investment.


1. Infrastructure and Technology Costs

The foundation of any call center is its infrastructure. To operate effectively, businesses must invest in:

  • Office space: Leasing or expanding facilities to accommodate agents, supervisors, and equipment.
  • Hardware: Computers, headsets, telephony systems, and secure networking.
  • Software: CRM platforms, workforce management tools, call recording systems, and QA software.
  • Security & compliance: Data encryption, PCI compliance, and cybersecurity tools to protect customer information.

Estimated setup cost: depending on size and complexity.


2. Staffing and Labor Costs

Human capital is the largest expense of an internal call center. Typical costs include:

  • Recruitment & onboarding: Advertising, background checks, and training programs.
  • Salaries & wages: annually per agent in the U.S.
  • Supervision & management: Team leads, operations managers, and QA specialists.
  • Employee benefits: Health insurance, retirement contributions, paid leave, compliance with labor laws.

Estimated annual cost:

  • per agent for recruitment/training
  • per year per employee in wages and benefits

3. Ongoing Training and Development

Customer expectations and products evolve rapidly, requiring continuous investment in:

  • Product training
  • Customer service skills development
  • Compliance and security updates
  • Coaching and performance monitoring

Estimated annual cost: per agent.


4. Operational Overheads

Beyond staffing and infrastructure, companies must also account for:

  • Utilities (electricity, internet, phone services)
  • Software licensing renewals
  • Maintenance of hardware and IT systems
  • HR and administrative overhead
  • Attrition and turnover costs (annually in call centers)

Estimated annual overhead: per agent.


5. Total Cost Projection

When all factors are combined, the cost of running an internal call center quickly adds up:

  • Small call center (10 agents): annually
  • Medium call center (50 agents): annually
  • Large call center (100+ agents): annually

These estimates exclude hidden costs such as downtime, turnover spikes, or compliance penalties.


6. Hidden Risks of Building In-House

While internal call centers provide control, they also carry risks that can impact ROI:

  • High capital expenditure with slow payback periods
  • Scalability challenges during seasonal or unpredictable demand
  • Recruitment struggles in competitive labor markets
  • Employee churn, which drives up ongoing costs

For many companies, these factors make building an internal call center less attractive compared to flexible, on-demand staffing models.


7. A Modern Alternative: On-Demand Call Center Teams

Instead of bearing the heavy financial and operational burden of an in-house center, businesses can now tap into vetted, scalable, and cost-effective alternatives.

Platforms like OnCall (OnCallHQ.com) connect companies with pre-vetted customer support agents who can be deployed quickly—without the upfront capital investment or long-term overhead of traditional models.

With OnCall, businesses can:

  • Scale up or down instantly based on demand
  • Reduce fixed labor costs and only pay for what they use
  • Access global talent pools without complex recruitment
  • Maintain quality standards with vetted professionals

8. How Zowa Improved Customer Experience with OnCall

Zowa, a fast-growing e-commerce brand, faced mounting customer service demands during peak shopping seasons. Building an internal call center would have required heavy upfront investments in staff, office space, and infrastructure—slowing their growth trajectory.

Instead, Zowa partnered with OnCall to build an on-demand support team that could flexibly scale as order volumes spiked. Within weeks, Zowa was able to:

  • Deploy a trained team of vetted agents without long recruitment cycles
  • Improve average response times
  • Reduce operational costs compared to in-house estimates
  • Maintain high CSAT (Customer Satisfaction) scores during seasonal peaks

By leveraging OnCall’s flexible staffing model, Zowa transformed customer support from a cost center into a scalable growth enabler.


Building an internal call center comes with significant financial and operational burdens. For businesses seeking flexibility, scalability, and cost-efficiency, on-demand solutions like OnCall provide a modern alternative—helping brands like Zowa deliver exceptional customer experiences without the overhead.


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