A weight and inspection (W&I) surcharge is a corrected bill. The carrier remeasures your LTL shipment at its dock, decides your bill of lading (BOL) was wrong, and adds a fee.
The fee itself is small. The bigger cost is the re-rate: the carrier moves your freight to a higher class and charges more for the whole shipment.
If you ship LTL, these bills are showing up more often than they used to. This article covers what a W&I surcharge is, what it really costs, why carriers catch the mismatch, and most importantly, how to stop it.
What is a weight and inspection (W&I) surcharge?
A W&I surcharge is what a carrier charges when its measurements do not match your BOL. It reweighs or reinspects your LTL shipment, finds the weight, dimensions, or freight class is off, and corrects the bill.
You pay twice. First a flat fee for the correction. Then a re-rate of the shipment to the class its measurement supports.
Carriers do not use the same name for it, which adds to the confusion. The same event shows up as a reweigh fee, an inspection fee, a reclassification fee, a freight class correction, a dimension correction, or just a corrected freight bill. They all mean the same thing: the carrier measured, disagreed, and adjusted the bill. It helps to split this into two parts.
- A reweigh is a weight dispute. The carrier puts your shipment on a certified scale. If the number is off by more than its tolerance, it rebills on the higher weight.
- A reclass is a classification dispute. The carrier measures your freight, recalculates the density, and moves it to a different NMFC class. That changes the rate. Many bills are both at once, because weight and dimensions feed the same density that sets the class.
What reweigh and reclass fees cost you
The fee itself is the smallest part. Most major US LTL carriers charge $20 to $50 per shipment for the correction.
Those figures come from each carrier's 2025 to 2026 tariffs and the FedEx Freight quicksheet. These fees change most years. Confirm the current number against the live tariff before you quote it.
The re-rate is where the money actually goes. Moving a pallet up even one class can cost far more than the fee. The new rate applies to the whole shipment, not just the difference.
Freight-audit data puts the average overcharge near $145 per corrected shipment. Only 4 to 6 percent of shipments hit a reclass dispute. When shippers challenge them, they recover 70 to 82 percent.
Multiply $145 across a busy outbound dock and the line stops looking small.
There is a second cost too. Your team spends time reconciling surprise charges and arguing corrections after the freight has shipped.
For the mechanics of how dimensional pricing inflates a bill, our guide on how to avoid carrier surcharges walks through the dim-weight math.
Why carriers reweigh and reclass your freight
Every major LTL terminal now weighs and measures freight as it crosses the dock. In-line scales and forklift-mounted or overhead dimensioners do it automatically.
Software compares the measured weight and cube to your BOL. Anything outside tolerance goes to the carrier's weight and research team. You find out weeks later, on the invoice.
The mismatches that trigger a correction come from a short list of causes:
- Wrong weight. An estimated or rounded weight the certified scale disagrees with. A carrier inspection fee often starts here.
- Wrong dimensions. A tape measure off by an inch, or a pallet measured before it was wrapped and stacked. Small errors change the density, and density sets the class.
- Wrong NMFC code or freight class. A class copied from an old BOL, or a guess. If you are unsure how the number is set, our explainer on how freight class is determined covers it.
- Pallet overhang. Cartons that hang past the pallet edge add to the footprint the carrier records, even if your stated size describes the pallet alone.
- Bad BOL data. Missing density, vague commodity descriptions, or numbers re-keyed by hand from a clipboard.
For more on how measurement errors ripple downstream, see our piece on the consequences of incorrect freight measurements.
Related charges people confuse with W&I surcharges
A few fees sound similar but are separate line items. An oversize, oversized, over-length, or oversize pallet fee is billed because your freight is physically large.
It trips a size rule whether or not your BOL was accurate. A W&I surcharge is different. It is billed because the carrier remeasured and disagreed with your BOL.
The two overlap, since sloppy dimensions can trigger either. But they are not the same charge. Accurate measurement helps with both. The rest of this guide stays on the reweigh and reclass side.
Why these are hard to fight
These mismatches catch more freight than they used to. The 2025 NMFC overhaul moved much of LTL to density-based classification. Class is now calculated from measured weight and dimensions on more shipments. So a small error turns straight into a wrong class the dock catches.
FreightWaves covered the new LTL freight class rules when they took effect. Old Dominion's own guidance on the NMFC class changes tells shippers plainly: accurate data matters more now.
To contest a correction, or prevent one, you need your own accurate numbers. The usual way to get them is a fixed static dimensioner. Those run $50,000 to $100,000 installed.
For most shippers, that capex is hard to justify against a fee that looks small on any one invoice. So the bills keep landing, and few get challenged. That is what makes W&I surcharges feel unavoidable. But the answer is not a six-figure scanner either.
How to avoid W&I surcharges: capture accurate data first
The carrier is going to measure your freight either way. The only real question is whether your number or theirs ends up on the invoice.
If your BOL matches what the dock dimensioner reads, there is nothing to correct. No mismatch, no fee. Prevention comes down to one thing: capture accurate weight and dimensions at your own dock, before the shipment leaves.
There are three ways to do it.
- A manual tape measure is free. It is also slow, only as accurate as the person holding it, and leaves no proof.
- A fixed static dimensioner is accurate. But it costs $50,000 to $100,000, sits in one spot, and handles a limited size range.
- Mobile dimensioning captures accurate weight and dimensions on a mobile device. It saves a photo with every measurement.
Our full breakdown of manual, static, and mobile dimensioning compared lays out the trade-offs.
This is where Flux, mobile dimensioning app, fits. It turns a commonly available devices with LiDAR or Time of flight sensors into a dimensioner.
Every measurement is saved with a photo. That photo is what a tape measure can never give you: dated, on-shipment proof that backs your BOL if a carrier disputes it. Because it is a dimensioner in your pocket, not a fixed scanner, it captures overhang and odd loads as they actually sit. And it runs pay-as-you-go, with no large upfront cost.
You can see it in practice in these short clips on manual dimensioning versus mobile dimensioning and how Flux measures pallet dimensions. Accurate dimensions feed the right density. The right density feeds the right class. And a correct class leaves the carrier nothing to correct.
Questions?
A weight and inspection (W&I) surcharge is a fee plus a corrected freight bill a carrier issues after it reweighs or remeasures your LTL shipment and finds the weight, dimensions, or NMFC class on your bill of lading were wrong. You pay a flat correction fee, usually $20 to $50, and the shipment is re-rated to the class the carrier's measurement supports.
Your freight was reclassed because the carrier measured it at its dock and calculated a different density than your bill of lading implied. Density sets the NMFC class, so a wrong dimension or weight moves your shipment to a different class and changes the rate. Since the 2025 NMFC shift to density-based classification, this happens on more shipments than before.
The correction fee itself runs about $20 to $50 per shipment, depending on the carrier. FedEx Freight charges $38, ODFL $25, XPO $47.85 for an inspection correction, and Estes $20. The larger cost is the re-rate to a higher freight class, which averages around $145 per corrected shipment according to freight-audit data.
Yes, when your data is right and documented. Pull the certified scale ticket, spec sheet, photos of the palletized shipment, and the PRO number, then file within the carrier's window, often about 30 days. You can dispute a measurement or weight that your documentation contradicts. You cannot dispute the NMFC code itself, only whether your freight matches it.
Put accurate weight and dimensions on the bill of lading before the freight ships, so the carrier's dock measurement has nothing to correct. Capturing dimensions with mobile dimensioning at your own dock, with a photo saved on every measurement, gives you both correct data and the proof to back it if a carrier ever remeasures.