Driver turnover cost calculator: what each empty seat really costs

By Edwin Horton · Updated October 2026

How the turnover calculator works

Turnover is one of those costs that never shows up as a single bill, so owners underestimate it. The calculator breaks it into parts you can measure from your own records. We don't use industry averages as defaults; every number is yours.

• Cost per departure = recruiting + onboarding + training + (days the truck sits × margin per working day)
• Annual cost = cost per departure × drivers who left in the last 12 months
• Turnover rate = drivers who left ÷ drivers you employ

EXAMPLE A five-driver fleet lost two drivers this year. Each hire cost $900 in ads and referral bonus, $450 in testing, records and orientation pay, and $1,200 in training and ride-along time. Each truck sat 12 working days before the new driver started, losing $280 a day in margin. Cost per departure: $2,550 plus $3,360 of idle truck, $5,910 in all. Annual cost: $11,820, at a 40% turnover rate.

The roster above the result shows each seat. Emptied seats show the days they sat idle.

Where turnover money goes

The idle truck is usually the biggest number. Shortening the vacancy, by recruiting before someone leaves or keeping a backup driver, often saves more than any change to hiring costs.

One departure a year in a small fleet is a big rate. In a five-truck fleet, each driver is 20% turnover. Small fleets feel every departure, which is also why they can fix it faster: you know each driver by name.

Compare the cost with what would have kept the driver. If a departure costs $5,900 and a driver asked for $50 more a week, that's $2,600 a year. The numbers often argue for the raise. Check pay with the truck driver pay calculator, and see how trip costs eat margin with the trip fuel cost calculator.

Keep drivers longer

Our truck driver turnover rate guide explains how turnover is measured and reported, and driver retention strategies that work covers what small fleets can change: pay structure, home time, equipment and communication. Dispatch is part of it. Our small fleet dispatch desk puts every driver's home-time rules on their unit's card and plans to them.

Run the numbers for your best driver too. If losing them would cost two or three times the average because the truck would sit longer or a key customer would notice, that's the case for paying them more than the market rate.

Measure it again in six months. Turnover numbers only mean something as a trend, and the trend tells you whether the changes you made are working.

Count from payroll, not memory

• Count departures from your payroll records, not memory
• Include your own hours spent recruiting at a real hourly value
• Use the margin a truck earns per working day
• Count days from the last day worked to the new driver's first load