Diesel set an all-time record of $5.85 a gallon on September 4, and the national weekly average the government publishes — the number most fuel surcharges live and die on — closed August at $5.599, according to the Energy Information Administration. If you haul for brokers, a surcharge usually shows up baked into the rate whether you can see it or not. But if you haul direct — or you want to — the fuel surcharge is a document you have to build yourself. And most small carriers have never actually built one.

Here is what happens instead. The carrier quotes a direct lane at a rate that felt right in March, diesel climbs a dollar a gallon by September, and the carrier eats every penny of the increase because the agreement never said otherwise. On a truck running 2,500 miles a week at 6.5 miles per gallon, a dollar-a-gallon move is roughly $385 a week — about $20,000 a year — transferred from your pocket to your shipper’s, silently, with no meeting and no negotiation. The shipper didn’t take that money from you. Your paperwork gave it away.

Today’s lesson is the fix: the Peg-and-Step Table. It is a one-page document with three decisions inside it — the peg, the divisor, and the steps — plus a delivery script that gets a shipper to sign it without a fight. You can build it in an evening and it will follow every load you haul for that customer for years.

Why “Fuel Is in the Rate” Is a Trap

An all-in rate feels simpler, and shippers like it because it hides the risk transfer. But an all-in rate is really a bet: you are betting that diesel stays at or below the price you assumed the day you quoted. In a year when the weekly national average has run from $4.80 in mid-July to $5.60 six weeks later, that is a bet you lose fast. The surcharge exists to take fuel out of the gamble entirely — you get paid for the freight at a stable linehaul rate, and the fuel line floats with the market in both directions. That “both directions” phrase matters more than you think: it is the single best selling point when you put the table in front of a shipper, because it means when diesel falls, their cost falls automatically too. A surcharge is not a price increase. It is a thermostat.

One rule before we build: a surcharge only protects you if it is written, signed, and attached to your rate agreement. A verbal “yeah, we’ll work with you on fuel” is worth exactly what the detention promises you never collected were worth. If you have not read our lesson on putting a shipper deal in writing, the surcharge table becomes clause three of that one-page agreement.

Step One: Pick Your Peg

The peg is the diesel price your linehaul rate already covers. Below the peg, no surcharge. Above it, the surcharge starts climbing. The industry has an old convention here — many legacy programs peg at $1.25 a gallon, a number left over from decades ago, as Overdrive’s guide to surcharge structure notes — and that convention works fine as long as the linehaul rate was set knowing the first $1.25 of fuel lives inside it. For a small carrier building a program from scratch, there is a cleaner way: peg at the diesel price you used when you built your cost per mile. If you calculated your floor with diesel at $4.50 — the way we taught in the Three-Line Cost Book — then $4.50 is your peg. The OOIDA fuel surcharge calculator is built on exactly this logic: the baseline is “the fuel cost amount you used in figuring your cost of operation,” not a number you copied from somebody else’s program.

Write the peg down next to the date and the rate it belongs to. When you re-quote the lane next year, the peg moves with the new rate. A peg nobody remembers setting is how surcharge disputes start.

Step Two: Set the Divisor at Your Real MPG

The formula itself is short: current diesel price minus the peg, divided by miles per gallon, equals the surcharge in dollars per mile. The divisor is where carriers quietly shortchange themselves. The industry default is 6.0 mpg, and OOIDA’s rule of thumb — about a penny a mile for every six-cent rise above your baseline — comes straight from that 6.0 assumption. But the divisor should be your truck’s real number, pulled from your fuel receipts and odometer, not a number that flatters the shipper. A lower divisor produces a higher surcharge per mile; if you run a 6.8-mpg truck and agree to a 7.5-mpg divisor because it looked reasonable in someone’s template, you eat the difference on every single mile.

There is one honest adjustment worth making, and it works in your favor. A surcharge is paid on loaded miles, but your truck burns diesel on every mile — and ATRI puts the industry’s empty miles at 16.7%. If one in six of your miles is unpaid, your effective fuel burn per paid mile is worse than your dashboard says. The correction: multiply your real MPG by your loaded-mile percentage. A 6.5-mpg truck running 85% loaded has an effective divisor of about 5.5. That is the number that actually makes you whole, and it is defensible arithmetic you can show a shipper on one sheet of paper.

Step Three: Build the Steps

You could run the formula fresh every week, but shippers hate variables and love tables. So convert the formula into steps: bands of diesel prices, each with a fixed cents-per-mile surcharge. Quarter-a-gallon bands are the sweet spot — wide enough that the number isn’t jumping every week, narrow enough that neither side eats a big move. With a $4.50 peg and a 5.5 effective divisor, each 25-cent band adds about 4.5 cents a mile. Your table reads: $4.50 to $4.74, $0.05 a mile. $4.75 to $4.99, $0.09. $5.00 to $5.24, $0.14. $5.25 to $5.49, $0.18. $5.50 to $5.74, $0.23. $5.75 to $5.99, $0.27 — and so on, extended up to $7.00 so nobody ever has to renegotiate mid-crisis. At the EIA’s late-August average of $5.599, that truck collects 23 cents a mile in surcharge. On a 550-mile round trip, that is $126.50 per turn that the all-in carrier down the road is donating.

Print the whole table on the same page as the two sentences that govern it — what index it follows and when it updates. That is the entire program. If you are also building a dedicated lane quote, the surcharge table rides along with the Four-Number Quote as a separate line, never blended into the linehaul number — a blended number is how the next fuel spike gets hidden inside “the rate” again.

Step Four: Tie It to the Tuesday Number

A surcharge needs a referee, and there is only one that every shipper in America already trusts: the Department of Energy’s weekly on-highway diesel average, published by the EIA every Monday afternoon and quoted everywhere by Tuesday. It is free, national, public, and nobody can argue with it. Your governing sentence reads: “Fuel surcharge is based on the U.S. DOE national average on-highway diesel price, updated each Monday, and applies to all loads picked up that week.” If you run a regional operation and your region consistently prices above the national number — the West Coast routinely does — use the DOE regional index for your area instead. Same source, same referee, closer fit. Never tie the table to “pump prices” or your own receipts; the moment the index is something only you can see, the surcharge becomes an argument.

Getting the Shipper to Sign It

The mistake carriers make is presenting the surcharge as a rate increase, which invites a rate negotiation. Present it as risk removal — theirs and yours. Here is the delivery, on the phone or across the desk:

If the shipper pushes back with “our other carriers don’t charge one,” the honest answer is also the strongest one:

Most shippers already administer surcharge programs for their bigger carriers, so you are not asking them to invent a process — you are asking to be treated like the professional operations they already work with.

This Week’s Assignment

Build your table in one sitting. Pull your last ninety days of fuel receipts and odometer readings and compute your real MPG, then multiply it by your loaded-mile percentage to get your effective divisor. Set your peg at the diesel price inside your current cost per mile. Build the 25-cent bands from your peg up to $7.00, print it on one page with the DOE governing sentence, and before Friday, deliver it — with the script above — to the one direct account, or the one prospect closest to saying yes, where fuel risk is currently coming out of your pocket. One page, one conversation, one signature.

Bottom Line

Record diesel is not the emergency — hauling through record diesel with no written surcharge is. The Peg-and-Step Table turns your biggest, wildest cost into a printed number a shipper signs once and honors for years: a peg you can defend, a divisor built from your own receipts, steps that move both directions, and a public index as referee. The carriers who survive five-dollar fuel are not the ones who guessed right about the market. They are the ones whose paperwork never let the market decide.

Innovative Logistics Group