What is Billable Utilization?

Billable utilization is the share of the hours you pay a crew for that end up on a customer's invoice. Almost every pricing tool asks you to type this number in, and the number people type is almost always generous. Since it's a divisor in the rate you charge, an optimistic guess here doesn't shave a little off your price — it under-recovers labor on every job, all season.

The definition and the formula

Billable utilization is the share of paid hours that are also billable hours:

  • Billable utilization = billable hours ÷ paid hours. A crew paid for 240 hours in a week that bills 168.5 of them is running at 168.5 ÷ 240 = 70.2%.

"Paid" is every hour that shows up on payroll — regular time, and any non-billable time you still pay for. "Billable" is only the hours that land on a customer's invoice. Every hour that's paid but not billable pulls the percentage down, and it's a bigger category than most pricing spreadsheets assume.

What actually eats the hours

None of this is waste, exactly — it's the paid time that never touches an invoice, and for a trades or service crew it's specific and recurring:

  • Toolbox talks and safety meetings. Required, and paid, and never billed to the customer whose job wasn't being worked on during them.
  • Apprentice classroom and related-instruction time. A registered apprentice's class day is a legal requirement of the program, not a scheduling choice — and it's paid, unbillable time.
  • Drive time between jobs and to the supply house. The truck doesn't bill by the mile, but the driver is on the clock.
  • Shop and yard time — loading, staging, equipment maintenance, the hour spent finding the right fitting.
  • Rework. Fixing a callback or a mistake is paid labor that (if you're pricing honestly) doesn't get billed twice.
  • Waiting on a supplier, an inspector, or another trade to clear the space before yours can start.

Why it multiplies through every price

Utilization doesn't just shave a little off the crew's output — it's a divisor sitting underneath the rate you charge for every hour of labor on every job:

  • Burdened cost per billable hour = wage × (1 + payroll burden) ÷ utilization. The wage and burden set what an hour costs you; utilization decides how many billable hours are left to spread that cost across.

Work it through: a $28/hr wage with a 25% payroll burden (taxes, workers' comp, benefits) costs $28 × 1.25 = $35.00 per paid hour. At a genuine 70% utilization, that's $35.00 ÷ 0.70 = $50.00 per billable hour before overhead or profit are even added. Price the same crew as if it ran 80% instead — a ten-point error that's easy to type into a field without checking — and the rate comes out $35.00 ÷ 0.80 = $43.75. That's $6.25 less on every billable hour, or 12.5% under-recovered on every invoice, forever, until someone re-measures the number.

Run your own crew's numbers with the free Billable-Hour Check — it takes one real week of paid and billable hours and returns the percentage, so you're not typing in a guess.

Utilization is not productivity, and low isn't lazy

It's tempting to read a low number as a crew that isn't working hard enough. That's usually the wrong read. A toolbox talk is a safety control, not slack. An apprentice's class day is required by the program they're enrolled in, not a choice either of you made this week. A technician driving between three service calls is doing exactly what the schedule asked.

Utilization measures how paid time gets allocated, not how hard anyone worked while they had a wrench in hand — that's a separate question, closer to productivity or efficiency. The lever that actually moves utilization is usually routing and scheduling — tighter job clustering, fewer supply-house trips, better sequencing with other trades — not asking people to work faster.

How to measure it instead of estimating it

The fastest way to this number is also the least reliable: guess, or reuse a figure someone quoted you once. Measuring it takes one real week:

  • Pick one real week, not a typical one. A representative week beats an idealized one — include the drive time, the toolbox talk, the supplier wait that actually happened.
  • Take paid hours from payroll or the schedule. That's the denominator — every hour anyone was paid for, billable or not.
  • Subtract the non-billable hours you already log somewhere. Safety-meeting sign-in sheets, the apprentice program's hour log, route or timesheet notes on drive time and shop time — most crews are already recording these pieces separately without ever subtracting them from paid hours to get a rate.

What's left, divided by paid hours, is a measured utilization rate for that week — not a guess borrowed from somewhere else.

What counts as "good" depends on the trade

There isn't one right number. A service-call electrician running short hops between calls, a remodeling crew parked on one job site all week, and a shop carrying a first-year apprentice will land in different places, and reasonably so. Treat any band you see quoted for this metric — including anywhere else on this site — as a rule of thumb to sanity-check your own measured number against, not a published benchmark to price against directly. The number that should set your rate is the one you measured from your own week.

Billable utilization feeds directly into flat-rate pricing, where it's one of the inputs to the billable rate every menu task is priced from, and it sits alongside bid markup as one of the numbers a defensible price depends on. Browse every tool built for the trades on the templates for contractors and templates for service trades hubs.

Templates that implement this

3 templates

The Trades & Service Business Bundle derives billable utilization from hours you're already logging across four separate files — timesheets, the schedule, safety records, apprentice hours — instead of asking you to guess it. The pricing book and estimating workbook then take the resulting rate and turn it into flat-rate tasks and defensible bids.