1. Two rates that get confused, and why the confusion costs money
Most rate arguments start with the wrong number. The cost per total mile is what every mile the truck turns costs, whether it is paid or not. The break-even rate per loaded mile is what each paid mile must earn so the paid miles cover all miles, including the empty ones. Brokers pay loaded miles only, but fuel, wear, insurance, and the truck payment do not stop when the trailer is empty, so a carrier who quotes the first number as if it were the second under-prices every load by exactly the deadhead share.
Take a simple case. A truck runs 10,000 miles in a month, 8,500 loaded and 1,500 empty, at a total cost of $19,200. Cost per total mile is $19,200 divided by 10,000, which is $1.92. But only 8,500 miles pay, so each paid mile must earn $19,200 divided by 8,500, which is $2.26. Quote $1.92 and the month ends $2,890 short, even though every load looked like it cleared the cost per mile. That gap is why deadhead belongs in the calculation from the start.
2. Step one: your fixed costs, the costs that run whether you move or not
Fixed costs are the monthly bills that arrive whether the truck runs 12,000 miles or sits for a week. List them from your actual statements, not from memory, and use a typical month rather than your cheapest month: truck payment, trailer payment or rental, insurance (liability, cargo, physical damage), permits and licences, accounting, dispatch service fees if you use one, phone and software, and base-plate or authority costs spread monthly. Add them up to one monthly fixed total.
Two traps hide here. First, annual bills get forgotten because they are not monthly: an annual permit or quarterly tax payment still belongs in the monthly figure, divided by twelve or by three. Second, your own pay is often left out entirely. If you drive, your pay is a cost of the truck, not whatever is left over. A break-even figure that excludes driver pay pays everyone except the driver. When you compare your number with market benchmarks later, check whether those benchmarks include driver pay, because many do not.
3. Step two: your variable costs, the costs that move with the miles
Variable costs are charged per mile, and small estimating errors compound fastest here, because they multiply by every mile you run. Fuel is the largest: diesel price per gallon divided by your miles per gallon. At $3.85 per gallon and 6.5 miles per gallon, fuel alone is $0.59 per mile. Maintenance and repairs are next, priced honestly as an escrow rate per mile set aside for tyres, brakes, oil, and the repair you have not had yet, commonly $0.15 to $0.22 per mile in current market guides. Tyre wear, around $0.04 to $0.06 per mile, is sometimes counted inside maintenance and sometimes separately, so count it once, in one place.
Then add the smaller per-mile items carriers routinely skip: tolls averaged per mile over a real month, factoring fees if you factor invoices, and per-load charges. Tolls are the classic omission, because a lane with heavy tolls looks identical to a lane without them on the load board. Tolls of $300 a month over 10,000 miles are $0.03 per mile. Add all variable items into a single variable cost per mile, and update the list when fuel prices or tolls change, because a break-even figure built on last quarter's diesel price is already wrong.
4. Break-even rate per mile: the deadhead formula, worked in full
Here is the full calculation, in four lines. Suppose monthly fixed costs are $3,500, variable costs are $1.57 per mile, and the truck runs 10,000 miles in the month. First, fixed cost per mile is $3,500 divided by 10,000, which is $0.35. Second, total cost per mile is $0.35 plus $1.57, which is $1.92 per total mile. Third, deadhead is 1,500 empty miles divided by 10,000 total miles, which is 15%. Fourth, break-even per loaded mile is $1.92 divided by 0.85, which is $2.26 per loaded mile.
That fourth line is the one most calculators skip, and it is the only line that turns a cost figure into a rate you can quote: it spreads the cost of empty miles across paid miles, which is exactly how your bank account experiences them. If deadhead falls to 10%, the same $1.92 cost per total mile needs only $2.13 per loaded mile. If deadhead rises to 25%, it needs $2.56. Same truck, same costs, a $0.43 per loaded mile swing driven by empty miles alone.
5. Break-even rate per mile by deadhead percentage
Check this table before accepting a load: find your cost per total mile, read across to your deadhead percentage, and that is the minimum loaded rate to break even. These are market examples, not your numbers: work out your own row from sections 2 to 4.
At $1.92 per total mile: 0% deadhead needs $1.92 per loaded mile; 5% needs $2.02; 10% needs $2.13; 15% needs $2.26; 20% needs $2.40; 25% needs $2.56.
At $2.34 per total mile: 0% deadhead needs $2.34 per loaded mile; 10% needs $2.60; 15% needs $2.75; 20% needs $2.92; 25% needs $3.12. That row is close to a published industry benchmark: the American Transportation Research Institute reported an average operating cost of $2.336 per mile for 2025 in its 2026 update, with non-tanker fleets running 16.5% of miles empty. At those averages, break-even is about $2.80 per loaded mile. Use the benchmark as a sanity check, not a substitute.
6. The single-load verdict: price the whole trip, not the loaded leg
Loads are accepted one at a time, so here is the trip version of the same maths. A broker offers $1,500 for a 500-mile loaded leg, which reads as $3.00 per loaded mile. The pickup is 150 empty miles away, and the next reload after delivery is unknown, so count only the known deadhead: 150 miles. Total trip miles are 650, and the true rate on all miles is $1,500 divided by 650, which is $2.31 per mile. If your break-even per loaded mile is $2.26, this load clears it, but only just, and only if no further deadhead follows delivery. If the truck then deadheads another 100 miles to the next load, total miles become 750, the true rate falls to $2.00 per mile, and the same load is now below break-even.
The discipline this creates is simple: never judge a load on its loaded miles alone. Before accepting, write down loaded miles, deadhead to pickup, and a realistic estimate of deadhead after delivery, based on the delivery market. A load into a market with no freight out is not a $3.00 per mile load; it is that load plus a long empty leg you have already agreed to pay for. Our guide to loads with a new MC authority makes the same point: the destination matters as much as the rate.
7. Your break-even rate per mile is the floor, not the target
Breaking even means the truck paid for itself and nothing more: no profit, no reserve for the next major repair, no return on the capital tied up in the truck. A carrier who runs at break-even for a year is one blown engine away from a crisis. So once you know your break-even rate per loaded mile, add an explicit margin on top before you call it your target rate, covering a maintenance reserve above your escrow rate, replacement capital, taxes, and profit.
A practical way to set it: add your chosen margin per mile to your break-even rate and use that sum as your walk-away rate in negotiation. If break-even is $2.26 and you add $0.30, your walk-away rate is $2.56 per loaded mile, and an offer below it is a decline unless there is a named reason to take it, such as repositioning to a strong freight market. Write the walk-away rate down before the call. Our broker negotiation script shows how to hold that line without burning the broker relationship.
8. Five mistakes that understate break-even
1. Counting loaded miles only. This is the central error of this guide. If your spreadsheet divides by loaded miles, your cost per mile is already understated.
2. Leaving out driver pay. A break-even figure with no pay for the driver assumes the driver works for free. Include it, and label it.
3. Using a best month for fixed costs. Insurance, permits, and quarterly bills do not disappear in a good month. Average fixed costs over three months, including annual items divided by twelve.
4. Pricing fuel at the cheapest pump you saw. A $0.20 per gallon error at 6.5 miles per gallon is $0.03 per mile, or $300 on 10,000 miles. Use your actual average fuel cost per gallon for the month.
5. Treating deadhead as a fleet average when you run one truck. A fleet average hides the truck deadheading 30% behind the truck deadheading 8%. Work deadhead per truck, per month, because the rate decision is made per truck.
9. Cutting deadhead: the only lever that lowers break-even without cutting costs
Every other way to lower break-even involves spending less or running more miles, and both have limits. Cutting deadhead is different: it lowers the divisor in the formula without touching your costs at all. Three habits move it. First, book the backhaul before you deliver, or start the search 100 to 200 miles before delivery, so the truck is not parked in a weak market waiting for freight. Second, refuse loads into known weak markets unless the rate pays for the empty leg out, priced with the trip maths in section 6, not with hope. Third, review deadhead weekly, per truck, and ask where the empty miles came from.
One caution: chasing a low deadhead percentage by accepting cheap freight out of a weak market can cost more than the empty miles saved. A $1.40 per mile load that fills 200 miles is worse than deadheading those miles if your variable cost alone is $1.57 per mile. Deadhead is expensive, but bad freight is worse. The test is always the same: does this load, priced over all its miles, clear your break-even rate?
10. Your monthly worksheet: fill it in once, update it monthly
Copy this worksheet, fill it in, and redo it monthly:
1. Monthly fixed costs. Truck and trailer payments, insurance, permits divided monthly, accounting, dispatch, software, phone. Total: $______ per month.
2. Monthly miles. Loaded miles ______ plus deadhead miles ______ equals total miles ______.
3. Fixed cost per mile. Monthly fixed total divided by total miles = $______ per mile.
4. Variable cost per mile. Fuel (price per gallon divided by miles per gallon) ______ plus maintenance escrow ______ plus tyres ______ plus tolls per mile ______ equals $______ per mile.
5. Cost per total mile. Fixed per mile plus variable per mile = $______ per mile.
6. Deadhead percentage. Deadhead miles divided by total miles = ______%.
7. Break-even per loaded mile. Cost per total mile divided by one minus deadhead percentage = $______ per loaded mile.
8. Walk-away rate. Break-even per loaded mile plus your margin per mile ______ = $______ per loaded mile. Write this number on the dispatch board, and check every offer against it.
11. Common questions
Is break-even per mile the same as cost per mile?
No. Cost per mile usually means cost per total mile, across loaded and empty miles. Break-even per loaded mile is higher, because the paid miles must cover the empty ones too. If someone quotes a single number without saying which one it is, ask: divided by what miles?
What deadhead percentage should I use if I do not track it yet?
Start with your last month's actual miles from your ELD or dispatch records, loaded and empty, and compute it; do not guess. As a market reference only, the ATRI 2026 update put non-tanker empty miles at 16.5% of total miles. Use that to sanity check your own number, then replace it with your own.
Should I include my truck payment if the truck is paid off?
Your cash break-even falls when the truck is paid off, and market guides put a paid-off setup materially below a financed one. Still include a replacement reserve per mile, because a paid-off truck is wearing out without a payment building its replacement.
Why does my break-even change every month?
Because fixed costs spread over fewer miles cost more per mile, fuel prices move, and deadhead varies by lane. A month with 8,000 miles and a month with 11,000 miles have different fixed costs per mile even if the bills are identical. That is why the worksheet is monthly, not once and for all.
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Related: Truck dispatching service · Loads with a new MC authority: what actually works · Broker negotiation script for dispatchers · TONU fees: how to claim and actually get paid · Why brokers reject your carrier packet · Reefer load rejected? Your first 60 minutes