Total Cost Per Seat Modelled: Five Scenarios, Five Different Answers

Why Cost Per Seat Is a More Useful Metric Than Cost Per Minute

Cost per minute is a useful rate card metric. It is not a useful budget metric. The number of minutes an agent generates depends on dialer mode, list quality, call duration, and shift length—variables that change week to week. Budgeting from a per-minute rate produces a number that is right for exactly one set of assumptions.

Cost per seat is a budget metric. It answers the question that finance actually asks: what does it cost to put one agent on the phone for a month, fully equipped, regardless of what they dial? Modelling TCO per seat requires totalling every layer of the voice stack—carrier, dialer, caller ID, surcharges, and add-ons—and dividing by headcount. The result is a number you can defend.

Scenario 1 — 5-Agent Boutique SDR Team, US Only, Low Volume

Profile: 5 agents, 150 attempts per day per agent, US domestic only, no predictive dialer (power mode), no AI tools.

At this volume the per-minute model is cheaper. The crossover point is approximately 250 connection-minutes per agent per day.

Scenario 2 — 15-Agent Collections Floor, US/CA, Medium Volume

Profile: 15 agents, 280 connection-minutes per agent per day, US and Canada calling, predictive dialer, basic reporting.

Still cheaper per-minute at this volume on the dialer line, but the gap is closing. The collections floor scenario crosses to flat-rate advantage at approximately 380 connection-minutes per agent per day—common for high-intensity right-party contact campaigns.

Scenario 3 — 25-Agent Sales Floor, US/CA + 3 European Markets, High Volume

Profile: 25 agents, 320 connection-minutes per agent per day, calling US/CA plus UK, Germany, Netherlands. Predictive dialer. AI Agents for call scoring.

International per-minute rates narrow the per-minute advantage further because the international premium over domestic rates is significant. At 380+ connection-minutes, flat-rate crosses. UnlimCall's network covers 33 markets with seat-based pricing—check the pricing page for EU market rates.

Scenario 4 — 50-Agent Predictive Floor, US Only, Very High Volume

Profile: 50 agents, 400 connection-minutes per agent per day, US domestic only, full predictive dialing, AI Agents add-on, 3:1 dial ratio.

At 400 connection-minutes per day the flat-rate model is within $25 per seat—well within the noise of quarterly carrier rate adjustments. And unlike the per-minute model, the flat-rate total does not grow if agents hit 450 minutes next month.

Scenario 5 — 10-Agent High-Volume International Floor, 5+ Markets

Profile: 10 agents, 350 connection-minutes per agent per day across US, UK, Germany, Australia, France. No international surcharge ceiling in current contract.

The international scenario is where the per-minute model carries the most risk. International per-minute rates are volatile. A single market rate adjustment on a high-volume market can add $50–$150/month with 30 days notice.

Reading the Crossover

The break-even point between per-minute and flat-rate pricing is approximately 250–280 connection-minutes per agent per day for US domestic calling. For international calling, the crossover is lower because per-minute international rates are 2–3x higher than domestic rates.