What the Cost Per Mile Calculator Tells You
Cost per mile is the single number that decides whether a driving job makes money. You add up everything the vehicle costs — the fixed bills like insurance and the truck payment, plus the variable wear like fuel, tires, and maintenance — and divide by the miles you drove. Enter your fuel price, MPG, insurance, and the rest, and the calculator breaks the total into fuel per mile, depreciation per mile, and fixed costs per mile so you can see exactly where the money goes.
A Worked Example for an Owner-Operator
Say your truck runs $6,000 a month in total costs — payment, insurance, permits, diesel, tires, and maintenance — and you cover 10,000 paid miles. That's $0.60 per mile to keep the wheels turning. A broker offers a load at $2.10/mile, so after costs you net $1.50/mile, or about $15,000 gross margin on those 10,000 miles before your own pay and taxes. Now say a slow week drops you to 5,000 miles but the fixed bills don't move: your cost per mile jumps because the payment and insurance are spread over half the distance. That's why dispatchers chase loaded miles.
Fixed Costs, Variable Costs, and the IRS Rate
Fixed costs — truck or car payment, insurance, registration, permits — hit every month whether you drive or not, so they get cheaper per mile the more you run. Variable costs — diesel, tires, brakes, DEF, oil — only happen while moving and stay roughly constant per mile. The IRS 2024 standard mileage rate of $0.67 is a handy tax-deduction figure for a personal car, but it was never meant to price a semi. A real owner-operator usually sits between $1.50 and $2.20 per mile; a gig driver in a paid-off compact often runs $0.35 to $0.55.
Cost Per Mile Calculator
Average Cost Per Mile by Vehicle Type
Based on 12,000 miles/year, national average fuel prices
| Vehicle Type | Fuel/Mile | Deprec./Mile | Fixed/Mile | Total/Mile |
|---|---|---|---|---|
| Compact Sedan | $0.10 | $0.15 | $0.18 | $0.43 |
| Midsize Sedan | $0.12 | $0.20 | $0.20 | $0.52 |
| Small SUV | $0.14 | $0.22 | $0.22 | $0.58 |
| Full-Size SUV | $0.18 | $0.28 | $0.25 | $0.71 |
| Pickup Truck | $0.20 | $0.25 | $0.24 | $0.69 |
| Electric Vehicle | $0.04 | $0.25 | $0.20 | $0.49 |
| Hybrid | $0.07 | $0.20 | $0.20 | $0.47 |
How to Use This Calculator
- Enter Your Annual Miles Driven: Use the miles you actually run for pay. Owner-operators should think in loaded miles, since deadhead miles burn fuel without earning revenue and will skew your rate.
- Add Fuel, Vehicle, and Fixed Costs: Fill in fuel price, MPG, purchase and resale value, years of ownership, insurance, maintenance, and registration. For a truck, put your tire budget and repairs into the maintenance field so nothing gets left out.
- Click Calculate: Run the numbers and the tool splits your total into fuel per mile, depreciation per mile, and fixed costs per mile in an instant.
- Compare Against Your Freight Rate: Take your total cost per mile and subtract it from the rate a load pays. If a $2.10/mile load leaves you at $0.60/mile in costs, you net $1.50/mile — anything below your cost per mile is a losing trip.
How It Works
Cost per mile is your total operating cost divided by the miles you drove to earn it. The calculator sorts your spending into fixed costs that hit every month no matter what, and variable costs that only happen when the wheels turn, then divides the whole pile by your mileage.
The basic rule:
- Fuel cost per mile = fuel price ÷ MPG (a truck at $3.90/gal and 6.5 MPG burns $0.60/mile in diesel alone)
- Depreciation per mile = (purchase price − resale value) ÷ (years × annual miles)
- Fixed costs per mile = (insurance + truck payment + registration) ÷ annual miles — these shrink the more you run
- Total cost per mile = fuel + depreciation + tires + maintenance + fixed costs
The 2024 IRS standard mileage rate is $0.67/mile, but that figure is built for light passenger cars. A working owner-operator's real number is usually $1.50 to $2.20 per mile, and a busy gig driver in a paid-off sedan often lands near $0.35 to $0.55.
Tips & Considerations
- Use loaded miles, not total odometer miles, when pricing freight — deadhead miles cost fuel but earn nothing, so counting them makes your rate look better than it is.
- Set a break-even number and refuse loads below it. If your cost is $0.75/mile, a $0.90/mile backhaul barely covers wear, let alone your pay.
- Fold your tire budget into maintenance: a $5,000 set of truck tires over 60,000 miles is about $0.08/mile you'll otherwise miss.
- Watch how a slow week spikes your cost per mile — the payment and insurance don't pause, so fewer miles means a higher number per mile.
- For gig driving, subtract the IRS $0.67/mile from what a trip pays; if the app offers $0.90/mile, you're clearing far less than it looks once depreciation is counted.
Frequently Asked Questions
What's the difference between fixed and variable cost per mile?
Fixed costs are the bills that arrive whether you run 500 miles or 15,000: truck or lease payment, insurance, permits, and registration. They spread thinner the more you drive, so idle weeks quietly raise your per-mile number. Variable costs only occur while moving — diesel, tires, oil, brakes, DEF. On a typical owner-operator load, fuel is roughly a third of the total and fixed costs another quarter.
How do I find my break-even freight rate per mile?
Add every monthly cost and divide by the loaded miles you actually run — not your total odometer miles, since deadhead miles earn nothing but still burn fuel. If you spend $6,000 a month and run 8,000 paid miles, you break even at $0.75/mile before you pay yourself. Any load below that loses money once you factor in deadhead, so most operators want the rate at least $0.50 to $1.00 above break-even.
Should truckers use the IRS $0.67 mileage rate for cost per mile?
No. The IRS standard rate of $0.67/mile (2024) is designed for personal cars and it understates a Class 8 truck badly — a semi burns close to that much in diesel alone. Use the IRS rate for tax deductions on a personal vehicle or gig car, but calculate your real cost per mile from your own fuel, tires, maintenance, and fixed bills when pricing freight.
Why do tires and maintenance matter so much for trucks?
A set of 18 drive and trailer tires can run $4,000 to $6,000 and lasts around 60,000 miles, which alone adds roughly $0.07 to $0.10 per mile. Add oil changes every 15,000–25,000 miles, brakes, and the occasional major repair, and maintenance commonly reaches $0.15 to $0.20 per mile. Gig drivers see the same effect at smaller scale — brakes and tires quietly add $0.05 to $0.08 a mile.
How does mileage change my cost per mile?
Fixed costs are a fixed dollar amount, so more miles divide them into a smaller per-mile share. A $2,500/month truck payment plus insurance is $0.50/mile at 5,000 miles but only $0.25/mile at 10,000. That's why sitting still is expensive — the payment doesn't pause. Variable costs like fuel and tires stay roughly flat per mile no matter how much you run.
What costs do drivers usually forget?
Deadhead miles, tolls, parking and truck-stop fees, DEF, ELD and permit subscriptions, loan interest, and your own health insurance and self-employment tax. For gig drivers it's the extra depreciation and cleaning from high-mileage rideshare use. These can add $0.05 to $0.20 per mile and are the difference between a load that looks profitable and one that actually is.