Service business capacity planning: connecting people, hours, and revenue

Start with employees and contractors who actually deliver the service. Account for leave, training, administration, sales work, and other time that cannot be sold. Use historical evidence where available.

Keep utilization definitions explicit. Billable hours divided by total paid hours differs from billable hours divided by available delivery hours. The same percentage can imply different economics.

List contracted work, pipeline, timing, skills, and customer dependencies. A company can have spare total hours but lack the specialist needed for an accepted project.

Separate bookings from scheduled delivery and invoicing. A signed project that starts in three months should not fill this month's capacity without explanation.

Use expected billable hours or another relevant service unit, realized rates, discounts, and fixed-fee project terms. Review scope and expected rework.

For illustration, five staff with 120 available delivery hours each and seventy-percent billable utilization produce 420 billable hours. At a realized $150 per hour, modeled revenue is $63,000 before contract-specific timing or adjustments. Each input needs evidence.

Compare added capacity, full cash costs, start dates, ramp time, flexibility, and commitments. A contractor may be more expensive per hour but support a short demand peak without the same ongoing obligation.

Include expected collection dates and the payroll or contractor payments needed before customers pay. More capacity can create a working-capital requirement.

Compare booked work, scheduled hours, actual time, invoices, collections, and project margins. Ask why utilization or realized rate changed, including skill shortages and rescheduled customer work.

Use the result to adjust staffing, pricing, scheduling, or scope. Preserve the plan and definitions so later reviews distinguish genuine productivity changes from revised measurement. The model should show what the team can deliver profitably and when that work becomes usable cash.