When FedEx Freight became its own company on June 1, 2026, it had to file a long document with the SEC introducing itself to investors. Most of it is boilerplate. One paragraph is not.
Source: FedEx Freight Form 10
FedEx told the SEC that its measurement technology, called Dimension in Motion or DIM, now scans more than 90% of its shipments. And that DIM is “estimated to have generated over $150 million of total incremental revenue over fiscal years 2024 and 2025.” The same filing says DIM helped FedEx fit 23% more freight into its trailers in one year.
FedEx did not find new customers or raise its rates. It measured freight it was already hauling, and $150 million appeared.
Money like that only appears if the freight was priced wrong to begin with.
I dug in to understand where that $150 million came from. The answer turned out to be much bigger than FedEx, and it involves your freight too.
Here is the short version. For about a hundred years, LTL freight has been priced on what the shipper wrote on the paperwork. That is now changing to what the carrier measures with a machine. If you buy LTL, you are on one side or the other of that change: either you have been underpaying for years without knowing it, or you have been overpaying to cover the people who were. The machines are sorting out which one you are.
Parcel shippers watched this exact movie in 2015, when FedEx and UPS started measuring every ground package. The ones who ignored it ate double-digit increases. I will come back to that, and also to the case that this whole thing is overblown, because serious people are making it.
One piece of context before we start: FedEx Freight is the largest LTL carrier in the US, with $8.8 billion in revenue, newly spun off from FedEx. When the market leader tells the SEC that measuring freight is worth nine figures, every other carrier is taking notes.
How your freight has been priced until now
LTL pricing runs on an honor system. You fill out a bill of lading, the BOL, with your shipment’s weight and its freight class. The carrier mostly bills what you wrote.
Freight class is the number that does the work. A standards body called the NMFTA keeps a big catalog, the NMFC, that sorts freight into classes from 50 to 500. Class 50 is dense, tough, easy freight. Class 500 is light, bulky, or fragile. The higher the class, the higher the rate per hundred pounds. Move the same pallet from class 100 to class 125 and it costs more, even though nothing about it changed.
Most big shippers skip the catalog. They negotiate an FAK, short for freight-all-kinds, one blended class for everything they ship. NMFTA itself says FAKs are private deals, "not part of the NMFC." It is a convenience: one class, no arguments, nobody re-rates every pallet.
That system held together for a century. Three cracks grew inside it.
What shippers declare often is not what shows up. Trade estimates put roughly one in four LTL shipments coming back with a corrected weight or class. That number comes from dimensioner vendors and carrier case studies, not a neutral audit, so hold it loosely. But the problem is real and old.
Carriers sell space, but the paperwork charges weight. Here is the aha at the center of this whole story: a trailer runs out of room long before it runs out of weight capacity. And freight keeps getting fluffier. TD Cowen/AFS data shows the average LTL shipment weighs about 20% less than it did in 2022, thanks to e-commerce. Jamie Pierson, then the CFO of YRC, said it perfectly back in 2016: "We sell space on a trailer, not just weight."
FAKs hide who is really paying. Put dense brake rotors and light foam pillows under one blended class and the pillows underpay while the rotors overpay. The contract hides it. Satish Jindel, who has tracked this market for decades, argues the biggest shippers negotiate the best blends and smaller shippers quietly cover the difference.
Add those up and you get a pricing system that drifted further from reality every year, always in the same direction. It undercharged for space.
What changed
Three things turned that drift into something carriers can now fix, shipment by shipment. The machines got cheap and legal. The rulebook caught up. And carriers turned enforcement on.
The machines
A dimensioner is a scanner that measures a pallet's length, width, and height in seconds, and usually weighs it too.
In 2013, the whole LTL industry had fewer than 50 of them. By 2016, Transport Topics counted more than 200, scanning 30% to 40% of freight. One FedEx executive said the machines "pay for themselves in less than a year."
Now jump to today. XPO's CEO says "we dimension the majority of our freight." FedEx scans over 90%. Old Dominion runs dock dimensioners that feed straight into its pricing department. A pallet unit now costs under $7,000, and in-motion models scan hundreds of pallets an hour as forklifts drive past.
But here is the detail that matters more than the hardware. A carrier can use any scanner to flag suspicious freight. To bill you off the scanner's number, the device has to be certified legal for trade under a program called NTEP, against the same federal standard that governs the scale at your grocery store.
In-motion pallet dimensioners started passing that test around 2017. That is the moment the scanner stopped being an audit tool and became a cash register. Before, the machine could only argue with your paperwork. After, the machine's number is the number.
The rulebook
On July 19, 2025, the NMFTA's Docket 2025-1 took effect and rebuilt freight classification around density. In FedEx's words, the change "moves over 2,000 items to full-scale density-based classification." (The exact count is debated. NMFTA's Nate Ripke has said up to 3,500 items; Jindel says closer to 4,000 out of 18,000-plus.) Two more rounds followed, and a rewrite of the mixed-pallet rule is out for public review now.
The heart of it is one simple scale. Measure your freight's density in pounds per cubic foot, and the scale tells you the class.
Thirteen density bands set the class. The two at the bottom, classes 55 and 50, are new.
Under 1 pound per cubic foot is class 400. Fifty or more is class 50. And notice the bottom two steps, classes 55 and 50: they are brand new. Dense freight can now rate cheaper than was even possible before. This reform is not only a price increase. It has a refund window.
Here’s sample math on a real pallet:
Same 500 pounds, same footprint. Twelve inches of extra height drops the density and jumps the class.
Density is length times width times height in inches, divided by 1,728. That gives cubic feet. Divide the weight by the cubic feet. The pallet counts as part of the freight.
Take 500 pounds on a standard 48-by-40 pallet:
Stacked tight, 48 inches tall: 53.3 cubic feet. That is 9.4 pounds per cubic foot. Class 100.
Stacked loose, 60 inches tall: 66.7 cubic feet. Density falls to 7.5. Class 125.
Published class multipliers put class 125 roughly 20% to 25% above class 100 (a ballpark, not a quoted rate). Read that again: twelve inches of air on top of your pallet is a full class jump on identical goods.
So who wins and who loses? I pulled the before-and-after classes for ten real commodities from NMFTA's own docket files, and the same reform genuinely cuts both ways:
Old class versus new density-based rating, from NMFTA's own docket files.
Vehicle gear frames fell from class 300 to as low as 85. NMFTA's own data shows that freight is dense, about 12.65 pounds per cubic foot. It had been paying a light-freight class for years.
Bed-in-a-box mattresses dropped from 100 to about 85. Pewter metalware fell from 100 to about 70.
Glass chandeliers went the other way, from a fixed 200 to 250 or 300. And a grandfather clock that packs light can now rate class 500, up from 200.
Semiconductors lost their price-tag rating entirely. Parts once classed up to 300 based on dollar value now rate on density alone, often 92.5 to 100.
Furniture shows how long this has been coming: sofas and chairs moved to density rating in November 2024, months before the famous July docket.
Here is the strange part. The biggest carriers shrugged at all this. Old Dominion's CEO Marty Freeman said, "I, personally, think it's a big to-do about nothing, really." XPO's CEO said he “did not expect the change to be material.” Jindel called it "a non-event and a wasted opportunity."
They are all talking about the rulebook. Keep reading, because the rulebook was never the main event.
The enforcement
Carriers publish documents called rules tariffs that set their fees. Those documents tell you what the press releases do not: what actually happens when the dock's scanner disagrees with your BOL.
I pulled the current rules tariffs for the eleven biggest LTL carriers that publish them:
What eleven carriers charge when the scanner disagrees with your BOL, from their own rules tariffs.
Fees run from $15 at Southeastern to $55 at ABF. The triggers vary more than the fees: Saia and Averitt charge on any adjustment at all.
Not declaring your density is expensive almost everywhere. Ship density-rated freight without the numbers and the default is class 150 at XPO and Southeastern, 175 at Estes, and class 500 at ABF and Averitt.
ABF goes furthest of anyone: its cubic minimum charge prices freight at $1.22 to $5.31 per cubic foot, with no freight class involved at all. Its tariff also refuses to process corrections in your favor unless the refund is bigger than the fee.
And the tightening all points one way, all recently: XPO in February, TForce's March tariff that now charges the fee only when the error is in your favor, Saia's fee up 39% since 2019.
The fee itself is small money. The re-rate is the real money. FedEx's Item 613, for example, takes any big, fluffy shipment and re-bills it at six pounds per cubic foot at class 150. The fee is the ticket. The reclassification is the fine.
Another piece evidence that enforcement is real is from Old Dominion. On June 15, 2026, Old Dominion revised Item 640 of its tariff, the rule for rating mixed shipments. Here’s a comparison of ODFL’s latest tariff to its April 2025 version:
The same tariff page, before and after. Note the old paragraph 5 on the left, the shipper protection that no longer exists, and the Revised 06/15/2026 stamp on the right.
Three things changed:
ODFL gave itself the right to re-rate freight that has no density-based class at all, whenever it "determines the class(es) assigned in the NMF 100 Series do not align with the density of the shipment." Read that slowly. The scanner no longer just checks your paperwork. It can override the published rulebook.
The trigger dropped from "inspection" to "review or inspection." A desk review of the scanner data is enough now. Nobody has to open the freight.
A protection quietly disappeared. The old rule said that if you had over-declared your weight, the refund was calculated at a favorable rate. That paragraph is gone.
And here is the aha inside the aha: this is the same company whose CEO called the classification change a big to-do about nothing. Watch what carriers write in their tariffs, not what they say on earnings calls.
Why is all this happening now, when the scanners have been on docks for a decade? Because the freight market is soft, and in a soft market, yield is the whole game. Carriers cannot grow by hauling more, so they grow by billing correctly for what they already haul. FedEx Freight's plan to lift its margin from about 12% to about 15% counts on better pricing for more than half the gain. ODFL pushed rates up 5.4% in May, fuel stripped out, even as its volume fell.
Carriers also have a fresh reminder of what the other path costs. Yellow, a nearly 100-year-old carrier and one of the country's largest, collapsed into Chapter 11 in August 2023. Thirty thousand jobs went with it.
Source: Yellow Chapter 11 filing
Yellow was the renamed YRC. The same carrier whose CFO said, back in 2016, that carriers sell space on a trailer, not just weight. The company that named the problem did not live to see the fix.
One more thing changed, and if you have ever disputed a reclass you already feel it. The carrier now holds photos, a scale ticket, and a certified scanner reading. You hold a BOL you filled out yourself. That is why the fees suddenly have teeth.
Where this is going
FedEx has already built the destination. It is called Space and Pace: you give FedEx a weight, dimensions, and two ZIP codes, and you get a price. No freight class anywhere in the transaction. DIM checks your numbers when the freight arrives.
FedEx launched it as a pilot in November 2022, saying the goal was accurate pricing up front "to reduce the frequency of price adjustments and disputes on the back end." The Form 10 now describes it in the present tense, as a working pricing model. One caveat, honestly held: FedEx has never said how big it is. No customer count, no revenue share. Real, running, size unknown.
FedEx is also alone in writing this down. Search every SEC filing since January 2025 for the phrase "dimensional pricing" and exactly one company uses it: FedEx Freight. The closest anyone else comes is ArcBest's annual report, which says "pricing has become more sensitive to accurate dimensional data."
Jindel, for all his skepticism about the rulebook change, is clear about the endpoint: full dimensional pricing makes the NMFC unnecessary, "just as the air freight and parcel segments utilize dimensional pricing without a third-party entity."
Which brings us back to parcel, because parcel already ran this experiment and we know how it ended.
In May 2014, FedEx announced it would measure every ground package and bill by size when size cost more. UPS matched five weeks later. Shippers got about seven months of warning. Then a Shipware study measured what happened to the gap between what packages weighed and what shippers were billed:
When parcel went dimensional, the gap between billed and actual weight jumped in a single year.
FedEx Ground: billed 9.6% over actual weight in 2014. A year later, 28.9%.
FedEx Home Delivery: from 11.6% to 45.1%.
UPS Ground: from 12.8% to 16.4%.
Analysts put the combined windfall around $550 million a year. One consultant described the mechanics in one line: put 5 pounds in a big box, and where you used to pay for 5 pounds, you now pay for 32.
But notice who actually paid. Shippers who treated the announcement as a footnote ate the increases. Shippers who spent the seven-month warning re-engineering their packaging blunted them. The biggest shippers negotiated waivers and skipped the pain entirely. The rule hit everyone; the bill went to whoever did nothing.
Two limits on the comparison:
Parcel's change only ever raised bills. The LTL version cuts both ways: dense freight gets cheaper under the new classes 55 and 50.
Parcel was two carriers sending a memo. LTL runs through a standards body, more than 50 carriers, and thousands of individually negotiated FAK contracts. Slower, messier, and much more negotiable.
That negotiability is the real brake on all of this. Nobody can tell you what share of LTL freight actually gets priced on measured density today. No such number is published. FAKs still cover the biggest contracts, though carriers are starting to charge for them: “If shippers want to keep their FAK program, they are going to pay for it,” as Cubiscan's Scooter Sayers put it. And remember, two of the five biggest carriers publicly called the rulebook change a non-event. FedEx itself delayed enforcing the new rules until December 2025.
So hold both ideas at once. The direction is clear.
The speed is up for debate.
How to get ahead of them
First, understand what kind of window you have, because it is easy to get backward.
Rates at record highs while freight keeps getting lighter. That gap is why carriers are scanning.
It is not a cheap-rates window. LTL rates are at record highs on the TD Cowen/AFS index, up for the tenth straight year.
It is a soft-volume window. ODFL's tonnage fell 3.8% in May. FedEx Freight is sitting on roughly 30% spare capacity with 500 salespeople hunting for freight; its CEO said on the June earnings call, "Right now, we could add another 10,000 shipments and not have to buy a piece of new equipment." Carriers want your volume right now. That is bid leverage. And it has a clock on it: the same CEO says demand is "beginning to stabilize and even increase across the industry."
Here is my checklist.
Know your freight before the carrier does
Pull 90 days of invoices and add up every reweigh, reclass, and inspection adjustment (FedEx's fee code is Item 981). That total is your exposure. It is also the evidence file the carrier already has on you.
Build a density file: real dimensions and weight for every SKU and standard pallet build, pallet included. Check each against the scale with NMFTA's ClassIT+ or a carrier's own calculator.
The cheat sheet: what a standard pallet rates at every common height and weight. Same weight, taller pallet, more expensive cell.
Fix the BOL
Describe your freight specifically. "Machine parts" invites an inspection. A real description with the NMFC item closes the question before the dock opens it.
List each pallet's weight and label each pallet. ODFL's new Item 640 rates labeled, itemized freight pallet by pallet; anything less can be collapsed into one whole-shipment class, at the carrier's option.
Repack based on the math
Pallet height is your cheapest lever. Remember: a foot of air is a full class.
Density now earns rewards, not just fewer penalties. FedEx's filing describes pricing incentives for customers who "ship heavier, denser shipments."
Take it into the bid
Quote with verified dimensions. That kills the carrier's back-end re-rate, and the dispute problem with it.
If you ship dense freight, run it against the new classes 55 and 50 and claim them. That refund exists, and no carrier will volunteer it.
Reprice your FAK. If the new scale made your mix cheaper, your blended class may now be over-market. If it made your mix fluffier, expect the carrier to charge for keeping the FAK. Decide what it is worth before they decide for you.
Bring your own evidence
Disputes go to whoever holds the data, so hold some. Keep scale tickets and photos at tender, or put a scanner on your own dock; pallet units start under $7,000. Douglas Dynamics cut its mis-rated shipments from about 25% to about 1% after installing one, with payback in months. KaTom, a restaurant supplier, reported a 30% shipping-cost reduction from clean dimension data. (Both stories come via a dimensioner vendor, so treat them as illustrations, not audits.)
Rates move. Measurement does not.
You can out-negotiate a soft market, but you cannot out-argue a tape measure, so stop bidding against this year's rate and start owning your own numbers. Right now the scanner belongs to the carrier. It does not have to stay that way.
