Money · 5 min read

Utilisation rate: the one number that runs a hire fleet

11 June 2026

Utilisation is the share of available time an item actually spends on hire. Take a machine you own for thirty days, hire it out for twelve, and you have 40% utilisation. That is the whole calculation. The interesting part is what you do and do not count.

Count downtime honestly

The temptation is to exclude the days an item sat in the workshop, because that was not a lost hire, it was maintenance. Do not. A machine in bits earns nothing, and a fleet with high repair downtime looks healthy on paper right up until you cannot fulfil a booking.

Measure per unit, not per category

A category average hides the problem. Six breakers at 55% might be four at 80% and two that have not left the yard since spring. The average tells you to buy more breakers. The per-unit number tells you to sell two.

What good looks like

• Under 25% — the item is not paying for its space. Sell it or find out why nobody asks for it.
• 25–50% — normal for seasonal and specialist kit. Watch the trend rather than the level.
• 50–70% — a healthy general fleet. Most well-run tool and plant depots sit here.
• Over 75% — you are turning work away. Either buy more or raise the price.

Use it to price, not just to buy

Sustained utilisation above 75% is a pricing signal before it is a purchasing signal. Raising the rate on your most-hired items is faster, cheaper and less risky than buying another unit — and it tells you quickly whether the demand was real or just cheap.