Utilization rate calculator for agencies

• Current utilization = billable hours per person / available hours per person.
• Annual revenue at current utilization = billable hours per week x team size x hourly rate x 52.
• Annual revenue at target = available hours x target % x team size x hourly rate x 52.
• Revenue gap = revenue at target - revenue at current utilization.
• Value of 1 point = available hours x team size x hourly rate x 52 / 100.

The calculator assumes 52 working weeks and that every extra billable hour is sold at your average rate. Holidays and unsold capacity make the real gain smaller.

Worked example

With the defaults, 5 people each have 40 available hours and bill 28, so utilization is 70%. At $125 an hour that is 140 billable hours and $17,500 a week, or $910,000 a year. At a 75% target each person bills 30 hours: 150 hours, $18,750 a week and $975,000 a year. The gap is $65,000 a year, or 10 more billable hours a week across the team. Each percentage point is worth $13,000 a year for this team.

How to read the result

The revenue gap is an upper limit, not a forecast. It only turns into revenue if there is client work to fill the hours and clients pay for them. If the gap is large, check first whether the hours are going to unbilled scope, internal meetings or simply too little sold work, because each needs a different fix.

Utilization rate is the share of available hours your team spends on billable client work. For an agency that sells time, it decides how much revenue the same payroll produces.

• Profitability: salaries are paid on every available hour, billed or not
• Hiring: sustained high utilization is the clearest signal to add people
• Pricing: chronically low utilization can mean the rate is right but the volume is wrong
• Workload: per-person figures show who is overloaded and who has room

Individual vs. team utilization

Team utilization is total billable hours divided by total available hours, not an average of individual percentages. A part-time designer at 90% and a full-time developer at 60% do not average out to 75% if their hours differ. Use the team mode below when people have different available hours.

Setting targets by role

Senior staff and managers spend more time on mentoring, sales and planning, so their targets should be lower than those of people who mainly deliver work. Set a target per role and judge each person against their own role's target. The 65-80% band used in the calculator is a planning assumption, not a published benchmark; adjust it to your agency.

Published figures show how wide the gap between roles is. In The Wow Company's BenchPress 2023 survey of 614 UK agencies, directors averaged 33% utilization, against about 65% firm-wide and 75% for junior and production staff. Across professional services firms, SPI Research's 2026 benchmark found average billable utilization of 66.4% in 2025, below the 70% SPI treats as the healthy minimum, with high-performing firms at 75%.

Very high utilization over long periods leaves no time for training, process work or business development, and raises the risk of burnout.

How to improve utilization

1. Track time accurately

Without timesheets you are guessing. Log time against client requests daily, including non-billable time, so you can see where the unbilled hours go. Five untracked minutes a day is about 20 hours a year per person.

2. Cut non-billable work

• Automate invoicing, reporting and other admin
• Keep internal meetings short and to an agenda
• Move admin from billable staff to operations staff
• Use templates for repeat work

3. Scope projects tightly

Unbilled scope creep lowers utilization even when the team is busy. Use a change request process and quote additional work.

4. Plan capacity ahead

• Forecast workload several weeks ahead
• Spot gaps early and fill them from the pipeline
• Cross-train people so they can move between projects

5. Review targets monthly

Share utilization by role with the team and review it each month alongside workload.

Revenue impact of utilization changes

For a team of 5 at $125 an hour with 40 available hours a week (52 weeks):

• 60% utilization = $780,000 annual revenue
• 70% utilization = $910,000 (+$130,000)
• 75% utilization = $975,000 (+$195,000)
• 80% utilization = $1,040,000 (+$260,000)

Each point of utilization is worth $13,000 a year for this team, if the work is there to sell.

Common utilization pitfalls

• Meeting overload: internal meetings eat into billable time
• Context switching: too many projects at once slows everyone down
• Scope creep: extra work done free lowers billed hours
• Patchy time tracking: bad data leads to wrong conclusions
• Seasonal dips: slow months not planned for
• Over-servicing: more time spent than was quoted

Utilization vs. productivity

Utilization counts billable hours; it does not show whether those hours were efficient. Someone can bill 35 hours a week on work quoted at 25. Compare billable hours with quoted hours as well as with available hours.