Why your LTL shipment got reclassed, and what to do about it

LTL is where the freight audit gets hard, which is why it is where the money sits. Three adjustments come up again and again, and they arrive on the invoice the same way: as a line you have to disprove.

1. The reweigh

The carrier puts the shipment on its own scale and bills the difference. Both sides get this wrong. Sometimes the carrier is right: the bill of lading never carried a tare weight, so a shipment tendered at 3,000 lb comes back billed at 3,800 lb, and a missing pallet tare of roughly 200 lb a pallet explains a good part of it. Sometimes the carrier is wrong: the reading does not match a documented tender weight, or the freight was weighed with the wrong tare.

What settles it. The weight on the bill of lading, the tare weight written down, and the scale ticket from your dock. A reweigh with no counter-evidence stands. A reweigh against a documented tender weight and a dated ticket usually does not.

2. The reclass

A class 70 shipment gets billed at class 92.5. Freight class follows density, and density follows the real dimensions and the real weight. Move either and the class moves with it, and with the class, the rate.

What settles it. Recomputing density from the actual dimensions and weight, and knowing which NMFC item applies to what you shipped. The bill of lading should carry the dimensions, the weight, and the NMFC item and class, so the carrier is arguing against your document rather than filling in the blank.

3. Accessorial creep

Liftgate, notify before delivery, residential, limited access, detention. Each is legitimate somewhere. The question is whether it was on the bill of lading for this shipment, and whether the delivery actually needed it.

What settles it. The bill of lading again, and the proof of delivery. A liftgate charge at a dock with a dock is a dispute. A notify charge with no phone number on the order is a dispute.

Why it does not stop after the first fix

A wrong contract rate is a one-time problem. You enforce the contract, the carrier corrects it, and the errors stop. Weight and class adjudication does not work that way. Every shipment is weighed and classed again, so the failures regenerate every week.

One LTL freight forwarder estimated in June 2026 that about 100 of its 1,500 weekly bills fail its audit tolerance, and that in many of those the carrier turns out to be right. It is one operator’s estimate, not a rate. It does show why LTL has to be audited continuously rather than once a year.

Your lookback window is the clock

Most carrier contracts let you dispute about 90 days back. Some allow 180 or 360. Anything older than the window is much harder to recover, so an adjustment found in month four of a 90-day window is a far weaker claim than one found in month one.

What to do this week

1. Put dimensions, weight, tare, NMFC item and class on every bill of lading.
2. Keep the scale ticket. A photo of the dock scale readout is enough.
3. Reconcile every LTL invoice line to the bill of lading inside the lookback window, not quarterly.
4. Dispute the ones that do not match, with the documents attached, and follow them until the credit lands.

Or hand that to us. Send one LTL invoice with a reweigh or a reclass on it and we will tell you whether it holds up. The outsourced freight audit desk does steps three and four every week.