Utilization rate is the share of a person's available working time that is spent on billable work, expressed as a percentage. It answers a simple question: of the hours you are paying for, how many are being sold to clients? It is one of the core health metrics for any agency or consultancy.
The formula
Utilization rate = (billable hours / available hours) x 100
The denominator matters. Some businesses use contracted hours, others use total working hours including admin and leave. Always confirm which one a benchmark assumes before comparing yourself to it.
A worked example
A consultant works a 40 hour week and logs 30 of those hours as billable. Utilization is 30 divided by 40, times 100, which is 75 percent. The remaining 10 hours go to admin, internal meetings, business development and learning.
Typical benchmark ranges
Benchmarks vary by role and industry, so treat the following as typical ranges rather than absolute targets:
- Billable delivery roles: often around 70 to 85 percent.
- Senior or lead roles: frequently lower, as management time is non-billable.
- Roles with sales or admin duties: lower again, by design.
Chasing 100 percent is a mistake. Without slack for training, recovery and improvement work, quality slips and people burn out, which costs more than the extra billed hours are worth.
Related terms
Utilization is often paired with realisation rate: utilization measures how much you bill, realisation measures how much of that you collect. Both build on your billable hours. To measure yours, use the billable utilization calculator, and for a deeper walkthrough read our guide to billable utilization rate.
