Weight Discrepancy: How to Read One, and How to Win the Dispute

You shipped a parcel at 500 g. Three weeks later a debit note says the carrier weighed it at 1.8 kg and you owe the difference. This is a weight discrepancy, and a meaningful share of them are wrong.

What a discrepancy actually is

Parcels are weighed and dimensioned automatically as they cross a sorting hub — a conveyor with a scale and a volume scanner. When that reading differs from what you declared, the carrier bills the difference.

The charge should be the price at the carrier’s weight minus the price at the weight you were billed — including the COD fee and GST, because your original bill included those too. If a platform charges you the freight difference alone, it is under-recovering; if it charges a flat “penalty”, ask where in the rate card that comes from.

First: is it even a discrepancy?

Three checks before you argue about evidence.

1. Compare against your chargeable weight, not your actual weight. If you declared 0.6 kg on a box that is 1.4 kg volumetric, you were already billed at 1.4 kg. A carrier reading of 1.3 kg is lower than what you paid, and there is nothing to charge.

2. Does it cross a slab? Your card charges in steps. If your slab runs 0.5–1 kg and the carrier read 0.9 kg against your 0.6 kg, the price is identical and the correct charge is zero. A charge on a same-slab reading is not a discrepancy — it is a fee with a discrepancy’s name on it.

3. Is the reading plausible? A 5,987 kg reading is a grams value read as kilograms. A reading above 50 kg on a parcel network is almost always a unit error.

The evidence that wins

Two photographs, taken at dispatch, before the parcel leaves you:

1. The sealed parcel on a weighing scale, with the AWB label and the scale display legible in the same frame.
2. A tape measure against each dimension of the sealed box — three shots or one clear one showing all three.

Add the AWB, the dispatch date and your declared figures. That package overturns an incorrect discrepancy far more often than an argument does, because it gives the carrier’s own operations team something to check their scanner against.

Build the habit into dispatch

The reason most sellers lose these is that the parcel is gone by the time the notice arrives, and there is no evidence to produce. For any SKU that has ever been disputed, and for every parcel above a value threshold you set, photograph at dispatch as a matter of routine. It takes fifteen seconds and it is the difference between contesting and paying.

Frequently asked questions

How long does a carrier have to raise a weight discrepancy?

It varies by contract — commonly within 30 to 45 days of shipment. Notices well outside that window are worth challenging on timing alone.

Can I dispute after the auto-accept date?

Usually not, which is why the clock matters. Most platforms auto-accept an unactioned discrepancy after a set number of days, and once accepted it is settled.

What if the carrier weighed it lighter than I declared?

Then you over-declared and paid too much. Most carriers do not refund this automatically; ask.

Is a discrepancy the same as a penalty?

No. A discrepancy recovers a real price difference between two weight slabs. If the amount does not correspond to a slab difference on your card, ask how it was calculated.