Utilization rate

Utilization rate = billable hours ÷ available hours × 100. 'Available hours' is the denominator you choose: total hours worked, or a standard capacity such as 40 hours a week or 1,800 hours a year. Pick one definition and use it consistently, because the same person can show 70% or 90% depending on the denominator.

Agencies often track two versions: billable utilization (hours actually charged to clients) and productive utilization (hours on any client work, including unbilled). The gap between them is unbilled client work — scope creep, write-offs, and fixed-fee overruns.

For a solo freelancer or consultant, 60–80% of a full week is typical once sales and admin are counted. Agency delivery staff commonly target 70–85%; team leads and account managers sit lower because management time is rarely billable. Treat these as orientation, not rules — a 95% utilization that comes with no sales pipeline is a problem a few months later.

Utilization is the bridge between the income you need and the hourly rate you charge. If you need to earn $90,000 and will bill 1,300 hours in a year, the rate has to be at least $69 an hour before overhead and tax. Every point of utilization you cannot reach has to come from a higher rate, which is why both numbers belong in the same calculation.