Plenty of agencies and consulting firms track utilization. Far fewer know what to do with the number. There's no point tracking it if it doesn't change a decision. Utilization should tell you when to push sales, when to hire, when to cut and when your pricing is off.
This post covers how to calculate it, what a normal range looks like, how to read the trend and what to do at each level. It assumes your delivery team is made up of full-time employees.
How do you calculate utilization rate?
Billable utilization is billable hours divided by available hours. Available hours are standard working hours minus approved time off and holidays, which is the definition most time tracking tools use.
Billable utilization = billable hours ÷ available hours
Your software may use a different name for the same measure. Our preferred application, WorkflowMAX, calls it Productivity: billable time divided by expected capacity, after subtracting capacity-reducing time like leave and training (WorkflowMAX).
Here's a month with 22 workdays:
Standard hours: 22 days × 8 hours = 176
Time off: one company holiday plus two PTO days = 24 hours
Available hours: 176 − 24 = 152
Billable hours logged: 118
Billable utilization: 118 ÷ 152 = 77.6%
"Billable" means hours spent on customer work. That includes fixed-fee and retainer work, even though those hours don't show up line by line on an invoice. More on that below.
You'll see a few related measures. Keep them separate:
Total utilization: all logged hours (billable plus internal) ÷ available hours. It tells you how busy people are, not how much of their time is customer work.
Scheduled or capacity utilization: hours booked on future work ÷ future capacity. It's a planning tool for the next few weeks.
Realization: what you billed or collected ÷ the value of the hours worked. It measures pricing and write-offs, not how busy the team is.
Should you divide by available hours or by 2,080?
Use available hours to manage the team month to month. Use 2,080 hours (40 hours × 52 weeks) for annual capacity planning and pricing. The same 118 billable hours in the example above come out to 67.0% on standard hours instead of 77.6%. Neither number is wrong. They answer different questions.
| Available hours (net of PTO and holidays) | Standard hours (2,080 a year) | |
|---|---|---|
| What it measures | How much of the time people were actually working went to customer work | How much of all paid time went to customer work |
| Monthly trend | Stays steady through holidays and vacation season | Drops in December, in summer and in any heavy PTO month |
| Best for | Managing people and teams month to month | Annual capacity planning, pricing and budgets |
| The catch | Hides a team that takes a lot of time off, so track PTO separately | Owners read a December dip as a slowdown that isn't there |
The trend problem with 2,080 is real. Thanksgiving, Christmas and summer vacations pull the number down every year, so a chart built on standard hours shows a slump that is really just time off. Netting out PTO and holidays removes that noise. At a minimum, net out company holidays. Everyone is off, so leaving them in makes November and December look worse for no reason.
Whichever you pick, write the definition down and don't switch mid-year. A trend only means something if every month is calculated the same way.
What's a good utilization rate for your business?
Start with 70% to 85% for your delivery team, then calibrate it to your business. Treat the range as a guide, not a benchmark you have to hit.
Industry averages vary too much to be useful on their own. So does the time of year. Accounting firms in tax busy season can run at 100% or more, with people billing more than eight hours a day. That's a rough stretch, but it's expected and it ends. A marketing agency or consulting firm will have its own pattern.
Your own trend matters more than any industry number. Set a starting target, track it for a few months and adjust once you see what normal looks like for your team.
Targets also differ by role. Setting a precise number for every title is hard, so start with the direction:
Junior and mid-level delivery staff usually run the highest. Most of their week should be customer work.
Senior staff and managers run lower. They review work, train people, manage projects and help sell. Most of that isn't billable.
Owners and partners run the lowest. Holding someone who leads sales to a delivery target guarantees a "miss" that isn't one.
How do you know if an out-of-range number is real?
Run four checks before you hire, cut or move work. A number that's off only matters once you know it's real and the work is priced right.
Is it out of range? Compare the trailing three-month average to your target by person and role, not only the company total.
Is it real? Check time tracking compliance first. If people don't log their time, utilization looks low even when they're slammed. People can also record time to jobs to game the system. Remember to check seasonality by comparing to the same months last year. Finally, look for one-off projects that filled or emptied a month.
Is the work priced right? Check effective hourly rate (covered below). A team at a healthy 80% on underpriced fixed-fee work is busy and still losing money.
Then decide. Hire, reduce staff, move work between people or teams, or reprice. The table below matches each range to a starting action.
What is your utilization rate telling you?
Once the number checks out, match it to an action. This is the table we use with customers.
| Utilization (trailing 3 months) | What it means | Check first | What to do |
|---|---|---|---|
| Below 60% Restructure zone | You're carrying payroll you can't fill with customer work. | The sales pipeline for the next 90 days. Whether people are logging all their hours. Whether customer work is being done but not recorded. | Push sales and move people to busier teams first. If it holds for a full quarter with a thin pipeline, plan a reduction or restructure. |
| 60% to 70% Watch zone (low) | Slack capacity. | Upcoming project starts. Whether one team is idle while another is overloaded. | Push sales or reassign before cutting. Use the time for training or internal projects with a deadline. Hold off on new hires. |
| 70% to 85% Healthy target | Room for training, admin and absorbing surprises. | Effective hourly rate and gross margin, so busy also means profitable. | Keep it there. Review it monthly by person and role. |
| 85% to 90% Watch zone (high) | The team is close to full. | Signed work for the next 90 days. Overtime. Deadlines starting to slip. | Start recruiting now. Hiring takes time, so don't wait until people are past 90%. Tighten scope on new work. |
| Above 90% Hire immediately | Quality slips, deadlines get missed, burnout and turnover follow. | Who is above 90% and for how long. Rework, write-offs and customer complaints. | Hire, or bring in contractors to cover the gap while you recruit. Revisit pricing if demand keeps outrunning capacity. |
One more caution: a healthy company average can hide people at both extremes. That's why the next question matters.
Should you measure it by person, role, team or company?
All four, for different reasons. The company number tells you whether payroll and revenue are in balance. The person and role numbers tell you what to do about it.
A company average hides problems. One designer at 98% and another at 50% average out to 74%, which looks healthy. In reality, one person is headed for burnout while the other doesn't have enough work. Look at:
Person: who is overloaded, who is underused and whose time isn't getting logged
Role: whether a whole level is out of balance, such as strategists at 92% while account managers sit at 60%
Team or service line: which part of the business needs the next hire
Company: whether total payroll fits the work you have
How do you trend utilization over time?
Review it monthly and judge it on a trailing three-month average. One slow month is noise. Three slow months is a pattern.
Chart it monthly by role and team, using the same definition every month.
Put it next to revenue per employee and gross margin. Rising utilization with flat margin often means the extra hours aren't being paid for. Our post on what a good gross margin looks like covers that side.
Expect seasonality. Even on available hours, December and summer can move as customers slow down. Compare to the same month last year, not only last month.
Watch time tracking compliance. A drop in logged hours can look exactly like a drop in work.
Utilization is one of several numbers service businesses should watch together. See our guide to KPIs for service-based businesses for the rest.
How do fixed-fee and retainer projects affect utilization?
Time spent on fixed-fee and retainer work is customer work, so it goes in the numerator like any hourly job. Utilization tells you how much of the team's time goes to customers. It doesn't tell you whether that time pays.
For that, use effective hourly rate:
Effective hourly rate = revenue for the work ÷ total hours worked on it
On hourly work, the effective rate stays close to your billing rate unless you write time off. On fixed-fee work, it falls every time the job runs over. A $20,000 project that takes 100 hours earns $200 an hour. If it takes 160 hours, it earns $125. High utilization with a falling effective rate usually means scope creep or underpricing, not a busy, healthy team.
What does this look like with a real customer?
One of our consulting firm customers didn't know how to set utilization targets. They also didn't have a clear view of how their team's time was being allocated. They started tracking time by job in WorkflowMAX, which showed where the hours were actually going.
The time data answered a second question too. WorkflowMAX also reported the effective hourly rate by job. That showed they needed to raise their rates. Utilization told them how the team was spending its time. Effective hourly rate told them the time was underpriced.
How should you set up utilization tracking?
Track time and expenses by job in a job management tool, review the numbers monthly and route them to the people who can act. You need to know where your team's effort goes for two reasons: to manage profit on each job and to manage overall staff capacity. That second part drives when to hire and when to reduce your workforce.
Track time by job and task. We use WorkflowMAX for time and expense data. We recommend it to customers too. Its capacity and productivity reporting does most of the work in this post: you set each person's available hours and a target productivity percentage, then compare actual billable time against it by person. One note: WorkflowMAX's standard Productivity report shows billable time as a share of total time logged, which is a different number. The capacity-based productivity reporting is the one that matches billable utilization. If you're setting WorkflowMAX up, see our WorkflowMAX implementation services.
Make logging non-negotiable. Daily or weekly time entry, with a deadline before month-end close.
Automate the review. At Basis 365, a custom AI agent built on Claude pulls our WorkflowMAX time data, assesses utilization and pings the right people when someone drifts out of range. Owners can set up the same kind of alert. It keeps the number in front of team leads instead of buried in a report.
Tie it to the books. Utilization, effective hourly rate and gross margin should come out of the same monthly close so they agree with each other. That's part of what good accounting for professional services firms looks like.
Frequently asked questions
Is 100% utilization good?
Not as a steady state. Short spikes happen, like accounting firms in tax busy season. Sustained 100% leaves no time for training, internal work, sales support or the surprises every project brings. People who stay above 90% for long tend to make more mistakes and burn out.
What's the difference between utilization and realization?
Utilization measures how much of your team's time goes to customer work. Realization measures how much of the value of that time you actually bill or collect. A team can be fully utilized with poor realization if work gets written off or fixed-fee jobs run over.
Should owners and partners track their time?
Yes, even if their target is low. Their time shows how much of the business still depends on them for delivery. It also shows whether they have room to sell and lead.
Do contractors count in utilization?
Track them separately. You usually pay contractors only for the hours they work, so idle contractor time doesn't cost you the way idle payroll does. Employee utilization is the number that drives hiring and staffing decisions.
How often should you review utilization?
Monthly, as part of the month-end close, with a trailing three-month average for decisions. Weekly checks help team leads catch an overloaded person early. Avoid making hiring or layoff calls on a single month.
Not sure your time data and your books tell the same story? Our free Financial Operations Assessment takes a few minutes and shows where your financial operations are solid and where they need work.
Sources. WorkflowMAX, Capacity and Productivity Reporting. LeanLaw, How to calculate your effective hourly rate on fixed-fee matters. Basis 365 experience with customers.
