Import documentation guide
Gross weight vs net weight: import packing list guide
Gross weight and net weight look like simple numbers, but they affect freight quotes, customs review, warehouse receiving, and landed-cost checks. Use this guide before approving supplier paperwork.
Gross weight vs net weight at a glance
| Term | What it means | Buyer check |
|---|---|---|
| Net weight | The product weight without export cartons, pallets, or protective packing. | Check whether the supplier reports unit net weight, carton net weight, or shipment total net weight. |
| Gross weight | The total packed weight of the shipment, including goods and packaging. | Match the gross weight across the packing list, commercial invoice, and carrier paperwork. |
| Tare weight | The weight of packaging material, cartons, pallets, and containers used around the goods. | Use it to explain the gap between net and gross weight when customs or receiving teams ask. |
| Chargeable weight | The freight billing weight, usually the higher of actual gross weight and volumetric weight. | Ask the forwarder which formula is being used before comparing air or courier quotes. |
Where these numbers appear
For a normal import shipment, weight data appears on the commercial invoice, packing list, Bill of Lading or Air Waybill, warehouse label, and freight quote. Small differences can trigger customs questions or receiving delays, especially when cartons are repacked after inspection.
- Packing list: should show carton count, net weight, gross weight, and dimensions.
- Commercial invoice: should align with the packing list when total weight is stated.
- Freight quote: should explain actual gross weight, volumetric weight, and chargeable weight.
- Warehouse receiving: should compare arrived carton count and gross weight against the supplier file.
How to audit a supplier packing list
Start by checking whether the supplier uses consistent units. Then multiply unit, carton, and shipment totals to see if the final weight is mathematically plausible. A clean packing list should make it obvious how the total was built.
- Confirm kilograms or pounds are not mixed between supplier and forwarder documents.
- Compare carton dimensions with carton gross weight before air freight is quoted.
- Ask for pallet weight separately when pallets are included in the shipment total.
- Keep photos of carton labels when a forwarder repacks or consolidates cargo.
Common mistakes that change landed cost
The expensive mistake is comparing freight prices using net weight while the carrier bills on chargeable weight. Another common problem is accepting a supplier packing list that has product weight but no carton dimensions, which makes volumetric freight hard to model.
- A light but bulky product can cost more by air because volumetric weight exceeds gross weight.
- A heavy product can change warehouse handling fees even when the product price is unchanged.
- A mismatch between invoice and packing list weights can slow customs or destination receiving.