A good utilization rate for most services firms sits between 74% and 85%. You calculate it as billable hours / available hours x 100. Below ~74%, margins erode because too little time is billed; above ~85%, you risk burnout, sloppy delivery, and inaccurate timesheets. The exact target depends on role and firm type.
That one-line answer is enough to act on, but “available hours” is where most firms get it wrong, and the right target is narrower than people assume. Here’s how to measure utilization correctly, what the current benchmarks actually are, and why a 95% utilization rate is a warning sign, not a trophy.
What utilization rate actually measures
Utilization rate is the share of your team’s available working time that gets spent on billable, revenue-generating work. It’s the single clearest signal of whether you’re staffed correctly: too low and you’re paying for idle capacity; too high and you’re burning your team to hit revenue.
It is not the same as profitability or revenue. A consultant can be 90% utilized and still lose money if their rate is too low or their hours don’t get billed. Utilization tells you about time; you pair it with rates and realization to get the money story.
Three flavors of “utilization” (and why people talk past each other)
The word “utilization” gets used for three different ratios. Mixing them up is the most common reporting error in services firms.
- Billable utilization — billable hours / available hours. The headline metric and the one benchmarks refer to. “How much of our capacity did we sell?”
- Capacity (scheduled/resource) utilization — all scheduled hours (billable + planned internal work) / available hours. This is what resource planners watch to avoid over- or under-booking. It runs higher because it counts planned non-billable work too.
- Realization rate — hours actually billed and collected / billable hours worked. This catches write-offs, scope creep, and discounts. You can be highly utilized but have poor realization if you write off hours at invoicing.
A consultant might be 80% billable-utilized, 92% capacity-utilized, and have an 85% realization rate. All three numbers are “true,” and you need all three. This guide focuses on billable utilization, the benchmark everyone quotes.
The utilization rate formula
Utilization Rate (%) = (Billable Hours / Available Hours) x 100
where:
Billable Hours = hours logged to client-billable work
Available Hours = total working hours in the period,
after subtracting PTO, holidays, and sick leaveThe numerator is easy. The denominator is where firms quietly inflate or deflate their own numbers.
Available hours is not “hours in the period.” If you divide by a flat 2,080 hours/year (40 x 52), you’re pretending nobody takes vacation or has a national holiday, which makes everyone look under-utilized. The correct denominator subtracts paid time off, public holidays, and scheduled non-working days. (See the section below on why this matters so much.)
A quick decision on the denominator
There are two defensible conventions; just pick one and stay consistent:
- Capacity-based (recommended): Available = contracted hours minus PTO and holidays. A consultant who works 8h/day, 5 days/week, with 4 weeks PTO and 10 holidays has roughly
(260 - 20 - 10) x 8 = 1,840available hours/year. This is the honest, sustainable denominator. - Calendar-based: Available = all standard working hours regardless of leave. Simpler, but it structurally suppresses everyone’s rate and punishes people for taking earned vacation.
Worked example
A small consulting firm wants Maria’s Q1 (January–March) billable utilization.
- Standard work: 8 hours/day, 5 days/week
- Working days in Q1: 64
- Maria took 3 PTO days and there were 2 public holidays in the quarter
Step 1 — Available hours
(64 working days − 3 PTO − 2 holidays) = 59 days x 8 hours = 472 available hours
Step 2 — Billable hours logged to clients in Q1: 368 hours
Step 3 — Utilization
368 / 472 x 100 = 78.0%
Maria is at 78% — squarely in the healthy zone. Note what happens if you’d used the lazy denominator of 64 x 8 = 512: you’d report 368 / 512 = 71.9% and wrongly conclude she’s under-target. Same person, same work, a 6-point swing — entirely from how you count available hours.
What is a good utilization rate? 2026 benchmarks
The honest headline: the industry is running below its own healthy targets. Average billable utilization across professional services was 68.9% in 2024 — the lowest since 2019 — according to SPI Research’s 2025 Professional Services Maturity Benchmark of 403 firms (via Saibon Group), and 2025 readings have been reported lower still. So if you’re at 70%, you’re roughly average — but average isn’t the goal.
The widely cited healthy target is 74%–85%. Below ~74%, revenue per head slips under most firms’ break-even; above ~85%, burnout and quality risk climb sharply (Saibon Group; Runn).
| Role / firm type | Healthy billable target | Notes |
|---|---|---|
| Junior / staff consultant | 78%–88% | Mostly executes billable delivery; little BD or admin |
| Mid-level consultant | 74%–84% | The core “Goldilocks zone” for sustainable margin |
| Senior consultant / manager | 55%–70% | Time goes to BD, mentoring, scoping — lower by design |
| Partner / executive | 60% and below | Selling and running the firm isn’t billable |
| Management consulting (firm-wide) | ~70%; 70%–80% per person | Just under 70% firm-wide is typical |
| IT services | 70%–80% | Project-based; lower between engagements |
| Marketing / design agency | 70%–80% | Junior designers often run as high as 90% |
| Law / accounting | 70%–75% individual; ~60% firm-wide | Higher rates mean profit at lower utilization |
Sources: Runn utilization benchmarks, Saibon Group 2025–2026 benchmarks.
Two patterns worth internalizing: utilization should fall as seniority rises (senior people sell and mentor instead of executing), and firm-wide is always lower than individual because it averages in your salespeople, leaders, and bench.
Why the target is a range, not a number
A higher billing rate buys you a lower utilization target. Law and accounting firms can hit their margins at 70%–75% because each hour is worth more; a commodity IT shop may need 80% to clear the same profit. That’s why “what’s a good utilization rate?” has no single answer — it’s a function of your rates, your cost structure, and your role mix. The right move is to set per-role targets, not one firm-wide number everyone is judged against.
Why too high is also bad
It’s tempting to treat utilization like a score where higher always wins. It isn’t. Pushing past ~85% reliably backfires:
- Burnout and attrition. Sustained 90%+ utilization means no slack for sick days, ramp time, or recovery. Your best people leave, and replacing a consultant costs far more than the hours you squeezed out.
- Quality and realization drop. Overloaded teams cut corners; rushed work gets written off or redone. High utilization with falling realization is a classic late-stage warning sign.
- No room to sell or improve. If everyone is 95% billable, nobody is doing business development, process improvement, or training — so next quarter’s pipeline and capability quietly shrink.
- Inflated, dishonest timesheets. When a 90% target is impossible to hit honestly, people pad billable codes. Now your “great” utilization number is fiction, and you’re making staffing decisions on bad data.
Think of utilization like an engine’s RPM. The redline isn’t where you cruise. The healthy 74%–85% band leaves the ~15%–25% needed for leave, internal work, and the human margin that keeps delivery quality and retention intact.
Getting the denominator right: work schedules and holidays
Everything above hinges on available hours, and that number is specific to each person and each country. Three things distort it if you’re tracking utilization in a spreadsheet:
- Different work schedules. A 4-day-week employee, a part-timer, and a full-timer all have different available-hours baselines. Dividing everyone by the same number makes part-timers look heroic and full-timers look lazy.
- National and regional holidays. A team split across the US, the UK, and Germany has a different holiday calendar per person. Counting US holidays for a Berlin-based consultant silently miscounts their capacity every month.
- PTO and leave. Vacation and sick days reduce available hours for that period. Leaving them in the denominator means employees are penalized in the metric for taking earned time off — exactly the wrong incentive.
This is the difference between a utilization number you can act on and one that just generates arguments. Per-user work schedules and per-region holiday calendars are why purpose-built tools beat spreadsheets here: they compute each person’s true available hours automatically and apply the right target by role. Platforms like Timix.AI build utilization on per-user work schedules plus per-org national-holiday profiles, so the denominator reflects who actually worked when — and pair it with separate cost and bill rates so you see true margin per client and project, not just busyness.
How to actually use utilization
A number on a dashboard changes nothing. Make it operational:
- Set per-role targets, not one firm-wide figure — e.g., 80% for staff, 75% mid, 60% senior.
- Track weekly or monthly, not just at quarter-end, so you can rebalance workloads while it still matters.
- Read it alongside realization and margin. High utilization + low realization = a billing or scoping problem, not a staffing win.
- Treat a sustained dip below target as a pipeline question and a sustained spike above it as a burnout question.
- Protect the bench on purpose. Some non-billable time is investment, not waste.
Used this way, utilization becomes an early-warning system for both under-selling and over-working — long before either shows up in your P&L or your turnover rate.