Definition · Contact centre and BPO
Cost per Contact
Definition
Cost per contact is the total cost of running a contact center operation divided by the number of contacts it handles in the same period. It shows what each call, chat or email really costs once labor, technology, facilities and overhead are included, and it is the standard number for budgets, outsourcing decisions and channel strategy.
Also called: Cost per call, Cost per interaction, CPC
Formula
Cost per contact = Total operating cost ÷ Total contacts handled
- Total operating cost
- Fully loaded cost for the period: agent and supervisor wages and benefits, recruiting and training, technology and telecom, facilities, QA, workforce management and allocated overhead.
- Total contacts handled
- Contacts answered or completed in the same period. Decide and state whether you count self-service completions; most centers report agent-handled and self-service separately.
Worked example
A 180-seat customer care center spends $1,260,000 in a month: $900,000 on agent wages and benefits, $140,000 on supervisors and support staff, $95,000 on technology and telecom, $60,000 on facilities, $45,000 on recruiting and training and $20,000 on overhead allocation. It handles 210,000 calls. Cost per contact = $1,260,000 ÷ 210,000 = $6.00.
What to include in cost per contact
The number is only useful if the cost side is complete. Teams that include agent wages and nothing else report figures half the real cost, then make bad outsourcing or automation decisions from them.
A fully loaded calculation includes:
- Agent labor: wages, overtime, benefits, payroll taxes, incentives.
- Management and support: team leaders, QA analysts, trainers, workforce planners, real-time analysts.
- Hiring and training: recruiting costs, background checks, paid training weeks, and the cost of attrition that forces you to repeat them.
- Technology: telephony or CCaaS licenses, CRM, WFM, QA and analytics tools, network.
- Facilities: rent, utilities, equipment, or home-agent stipends for remote teams.
- Allocated overhead: IT, HR, finance share.
Labor typically accounts for 60% to 70% of the total, which is why average handle time and attrition move cost per contact more than anything else.
Typical cost per contact by channel
Ranges vary with wage rates, location and complexity, but rough US in-house figures commonly cited are:
- Voice: about $4 to $12 per call for customer service, higher for technical support or regulated work.
- Chat and messaging: often lower per contact than voice because agents handle two or three conversations at once.
- Email and tickets: depends heavily on how many touches each case needs.
- Self-service (IVR, web, bots): usually well under $1 per completed interaction.
Offshore and nearshore outsourcing lower the labor component sharply, which is why per-hour or per-contact pricing from BPOs looks so different from in-house figures. Compare like with like: a vendor's price per handled call versus your fully loaded internal cost, not your agent wage alone.
Cost per contact vs cost per resolution
Cost per contact rewards short contacts. If agents rush and customers call back, cost per contact can fall while the cost of solving each problem rises. Cost per resolution divides the same total cost by issues actually resolved, which counts the repeat calls. A center with $6.00 cost per contact and 70% first call resolution is spending more per solved problem than the raw figure suggests.
Report both where you can, and read cost per contact alongside quality and resolution in your call center KPIs.
How to lower cost per contact
- Remove avoidable contacts. Calls caused by confusing bills, missing status updates or broken web flows are pure cost. Track contact reasons and fix the top three upstream.
- Raise first contact resolution. Every repeat call doubles the cost of that issue.
- Cut handle time by removing friction, not by rushing agents: better knowledge articles, fewer screens, automated summaries.
- Reduce attrition. At 60% annual turnover a 200-agent center replaces 120 agents a year. With recruiting and paid training at $4,000 to $6,000 per hire, that is about $480,000 to $720,000 before lost productivity. Better call center recruitment screening that lowers early attrition shows up directly in cost per contact.
- Improve schedule fit and shrinkage so paid hours turn into handled contacts.
- Move simple contacts to self-service, and expect the remaining agent contacts to be longer and more expensive. That is fine; total cost still falls.
Frequently asked questions
How do you calculate cost per call?
Divide total operating cost for the period by the number of calls handled. Include wages and benefits, supervision, recruiting and training, technology, facilities and overhead, not just agent pay.
What is a typical cost per contact?
For US in-house customer service voice, roughly $4 to $12 per call is commonly cited, with technical and regulated work higher. Chat is often lower per contact and self-service usually well under $1.
What is the difference between cost per contact and cost per interaction?
They are usually used as synonyms. Some organizations use interaction to include self-service and digital touches, so check what is counted in the denominator.
Why is cost per contact misleading on its own?
It rewards short contacts even when issues are not solved. Pair it with first call resolution, cost per resolution and quality to see the true cost of serving customers.
What drives cost per contact the most?
Labor, usually 60% to 70% of total cost. Handle time, occupancy, shrinkage and attrition therefore have the biggest effect.