Utilisation, and what the number hides
The proportion of the week you can sell is the figure every rate depends on, and most studios have never calculated it.
Utilisation is billable hours divided by available hours. It sounds like an efficiency metric and it is really a capacity one: it tells you how much of the week is actually for sale.
The reason it matters is arithmetic. At sixty percent utilisation, every unbillable hour has to be paid for by the billable ones, and the rate has to reflect that or the year does not work. At a broader level, workforce analytics software can aggregate patterns across projects and people, although the interpretation still depends on good source data.
What realistic looks like
An established freelancer running at sixty to seventy percent is doing well. Agencies with delivery staff and separate sales and admin functions can run higher for those staff, and the overhead reappears elsewhere in the cost base.
Anyone assuming eighty-five percent is either not counting proposals, admin and business development, or is heading toward a workload that is not sustainable.
It is usually one of three things: not enough pipeline, too much time in unpaid proposals, or a heavy admin load. Each has a different fix, and none of them is trying harder. For UK working-time context, GOV.UK guidance on calculating working hours explains how working hours are calculated.
Chase the cause, not the number
Pushing utilisation up as a target produces the wrong behaviour: less investment in sales, less learning, and eventually a thin pipeline that shows up two quarters later.
The productive use is diagnostic. Where is the unbillable time going? If a quarter of the week is proposals, the win rate or the qualification process is the problem. If it is admin, that is an automation or delegation question.
Watch the unpaid proposal load
In studios that pitch, proposal effort is frequently the single largest unbillable category, and it is invisible because it feels like selling rather than working.
Recording it changes decisions quickly. A studio that discovers it spends thirty hours a month on proposals with a one-in-five win rate is looking at a real cost per win, and usually concludes it should qualify harder rather than pitch more.
Utilisation is not profitability
A fully utilised studio working at a rate below its floor loses money efficiently. High utilisation on underpriced work is the most common way a busy services business fails.
The two numbers have to be read together: utilisation tells you how much you sold, effective rate tells you what it was worth. Either alone is misleading.
Track it per person and over time
The trend matters more than the level, and the distribution matters more than the average. A team average of sixty-five percent can conceal one person at ninety and another at forty, which is a workload problem rather than a capacity one.