Utilization rate
Also known as: Billable utilization, Chargeability, Utilization
Percentage of billable hours worked compared to total available hours of a consultant in a given period.
Utilization rate is the core efficiency KPI in consulting firms. It is computed as billable hours / total available hours, on a weekly, monthly or annual basis.
Industry averages range from 60% to 85% depending on the model (boutique vs. body rental) and seniority. Managers and partners show lower utilization (40-60%) because they spend time on sales and people management, while senior consultants target 75-85%. Chronically low utilization signals excessive bench or weak pipeline; sustained utilization above 90% erodes quality and retention. A PSA tracks utilization in real time to support staffing, hiring and pricing decisions.
Most disputes about utilization are definitional rather than factual. Two teams looking at the same figure will disagree about whether internal training counts as billable, whether holiday reduces the denominator, and whether a partially billed day counts in full. Settling those questions in writing before publishing any dashboard takes an hour and prevents months of low-level argument about whose number is right.
Utilization also has to be read against the assignment rather than the person. A consultant at 62% who spent six weeks on a client that kept postponing decisions is not less productive than one at 84% on a well-run programme. Recording the context alongside the number — unplanned work, absences, scope changes — is what keeps the metric useful instead of merely accusatory.
Out of 220 workable days per year, a consultant bills 165: his utilization is 75%. The company target is 78%, so he is slightly under.