Utilization Rate

How to calculate utilization rate

The formula is simple. The definition of available hours is where numbers drift apart. Some firms count every scheduled hour (40 a week, 2,080 a year). Others subtract paid time off and holidays first, because nobody can bill a public holiday. Pick one definition and use it for every person and every period.

There are related versions. Billable utilization counts only client-billable hours. Productive utilization also counts work that adds value but isn't billed, such as internal projects and training. Capacity utilization compares hours booked with hours available across the whole team. When someone quotes a utilization figure, ask which one it is.

Worked example: a designer at an agency

A designer is scheduled for 2,080 hours a year. Paid time off and holidays take 200 hours, leaving 1,880 available hours. She bills 1,316 hours at $120 an hour.

The same work gives 70.0% or 63.3% depending on the denominator, a seven-point gap that comes only from the definition. Publish the definition next to the number, or a target of 75% means different things to different people.

Each extra point of utilization is worth about $2,256 of revenue for her ($120 × 1,880 × 1%). Moving from 70% to 80% adds 188 billable hours, or $22,560, a 14.3% gain in revenue from the same salary. Since the cost of the person doesn't change, almost all of it drops to gross profit.

Break-even and target utilization

Work backward from cost to find the utilization a person needs. Suppose the designer's fully loaded cost (salary, taxes, benefits, and equipment) is $95,000 a year. See fully loaded cost and labor burden rate for how to build that figure.

Break-even is $95,000 ÷ ($120 × 1,880) = 42.1%. Below that she costs more than she bills. To earn a 30% gross margin on her time, revenue must be $95,000 ÷ 0.70 = $135,714, which is 1,131 billable hours, or 60.2% utilization.

The firm's real target has to cover more than direct cost. Overhead, sales, management and profit all have to come out of the billable hours. That is why agency targets usually sit well above the individual break-even figure. The agency break-even calculator builds this at a firm level, and the freelance rate calculator does the same for a solo operator.

Using utilization to plan headcount

Utilization also turns a sales forecast into a hiring plan. A studio has six producers. With 1,880 available hours each and a 75% target, each produces 1,410 billable hours, so the team's capacity is 6 × 1,410 = 8,460 hours, worth about $972,900 at a blended $115 an hour.

Now the pipeline suggests 9,500 hours of work next year. 9,500 ÷ 1,410 = 6.7 people, so the studio needs a seventh producer, or a contractor for the overflow, or it has to push utilization above target. Pushing utilization is the risky option: the hours are there on paper, but nothing is left for sick days or sales work. Do the calculation early, because a new hire takes months to reach full productivity.

Typical utilization by role

Targets differ sharply by role, and applying one number to everyone is a common error. Scoro's guide suggests these ranges:

Measure by month as well as by year. A studio that averages 70% for the year can run 82% in a busy October and 55% in a slow August, and the annual figure hides both problems. Overloaded months show up as overtime, missed deadlines and turnover, while the slow ones show up as bench time you are paying for. Use the monthly pattern to time hiring, holidays and business development, and to decide when to say no to work.

Treat these as starting points. A senior specialist may run lower because much of their value lies in reviewing others' work, and a junior producer may run higher. A team with a target of 80% for everyone would need to have no time for sales, training or internal work, which isn't realistic. The same guide suggests non-billable time for client-facing staff should stay within 20% to 25%, and that a ten-point difference in utilization can be a large difference in profitability.

Utilization and realization together

Utilization asks how much of someone's time was billed at all. Realization rate asks how much of the billed value was collected at the intended rate, after discounts and write-offs. The two multiply.

At 70% utilization and 90% realization, only 0.70 × 0.90 = 63% of the designer's available time turns into revenue at the rate card. Her revenue is 1,880 × 0.70 × 0.90 × $120 = $142,128, not the $157,920 she billed at list rates, a $15,792 leak from discounts and unbilled overruns. A firm can hit its utilization target and still miss revenue if realization is weak. Track the two together.

How to raise utilization sensibly

• Reduce bench time. Forecast work two or three months ahead and hire or contract to demand, so people aren't idle between projects.
• Cut non-billable overhead. Meetings, internal tools and admin can eat a fifth of the week. Automate or delegate what doesn't need a billable person.
• Price for the work, not the hours. If a project takes 40 hours and you bill for 30, the shortfall lowers realization. Tighten scoping and change orders.
• Track time as it happens. Late timesheets undercount billable time and delay invoices.
• Don't push past the sustainable limit. Running everyone at the top of the range leaves no room for sick days, training or sales, and it tends to raise turnover.

Common mistakes

• Comparing utilization figures built on different denominators. The 70% versus 63.3% gap in the example is a definition issue, not a performance one.
• Using one target for all roles. A manager at 75% is probably neglecting the team, and a producer at 40% is probably underused.
• Counting internal work as billable. Internal projects raise reported utilization without producing revenue.
• Ignoring write-offs. High utilization with heavy discounting yields lower revenue than the number suggests.
• Maximizing utilization as a goal. The right level covers cost and margin while leaving room for sales and development.

What utilization rate can't tell you

Utilization measures how time is used, not whether it earns well. It doesn't show rate, margin, client quality or the value of the work. Combine it with realization, effective hourly rate and gross margin, and use the billable hours entry to set the underlying definitions. For staffing businesses, the staffing bill rate calculator links rate, cost and margin.

Frequently asked questions