How many tickets do you handle monthly?

Customer support headcount is the single largest cost line in most CX organizations, and it’s also the easiest one to get wrong. Underhire and SLAs slip, agents burn out, and CSAT drops. Overhire and you pay 30 percent more than needed to maintain the same service level. This calculator gives you a defensible number that you can take into a hiring plan, a budget review, or a board update. It uses the Erlang C formula for staffing (the same one call centers have used for decades) and adapts the inputs for modern channels — email, chat, voice, and social — where concurrency, response-time expectations, and complexity all vary.

Plug in your monthly ticket volume by channel, your target service level (for example, 90 percent of chats answered within 60 seconds), and your operating hours. The calculator returns the full-time-equivalent (FTE) headcount you need, plus a recommended buffer for shrinkage (training, PTO, attrition, breaks). You can then layer in AI automation: if you deflect 50 percent of tier-one tickets with an AI agent, the human team size drops accordingly. The result is a realistic staffing plan that survives finance scrutiny and matches how 2026-era support orgs actually run.

• Channel-specific productivity assumptions (email vs. chat vs. voice)
• Erlang C-based modeling for queue dynamics and SLA targets
• Shrinkage buffer (PTO, training, attrition) baked in
• Toggle AI deflection to see headcount impact in real time