In international trade, the goods and the documents travel together, and customs often cares as much about the paper as the cargo. A single inconsistency between documents can hold a container at the border for days.

This checklist covers the core documents in a typical shipment, what each one is for, and the details that most often go wrong.

The Core Documents

Almost every shipment needs these four documents, whether by sea or air.

  • Commercial invoice - the bill for the goods and the basis for customs value.
  • Packing list - the detail of what is in each package.
  • Bill of lading or airway bill - the contract of carriage and proof of shipment.
  • Certificate of origin - proves where the goods were made, needed for FTA benefits.

The Commercial Invoice in Detail

The commercial invoice is the most important document in the set. Customs uses it to value the goods and calculate duty, so accuracy matters.

FieldWhy it matters
Seller and buyer detailsIdentifies the parties to the transaction
Invoice number and dateReference for payment and customs
Description of goodsMust match the HS classification
Quantity and unit priceBasis of customs value
Incoterm and payment termsClarifies cost and risk allocation

The Packing List

The packing list tells everyone handling the cargo exactly what is inside: carton counts, weights, dimensions and marks. It helps customs select packages for inspection and lets the buyer verify receipt against the order.

The Bill of Lading

The bill of lading (B/L) serves three roles at once: a receipt for the goods, evidence of the contract of carriage and, for negotiable bills, a document of title. An airway bill (AWB) serves a similar role for air freight but is not negotiable.

The Certificate of Origin

This document states the country where the goods were produced. Without it, you cannot claim preferential duty under a free trade agreement. Certificates may be issued by chambers of commerce or self-certified under some agreements.

Specialised Documents by Product

Many goods need additional paperwork tied to their product category.

  • Phytosanitary certificates for plants and food.
  • Health certificates for animals and animal products.
  • Certificates of conformity for electronics and machinery.
  • Dangerous goods declarations for hazardous cargo.
  • Import licences for restricted goods.

Documents for Letters of Credit

When payment is by letter of credit, the documents must comply with the LC terms exactly. Banks check documents, not goods, and even a typo can be treated as a discrepancy. Prepare documents against the LC wording, not against what you think was agreed.

Common Discrepancies

  • Description of goods differing between invoice and bill of lading.
  • Weight or quantity mismatches across documents.
  • Missing or inconsistent Incoterms.
  • Incorrect HS codes or origin statements.
  • Signatures, dates or stamps out of place.

Building Your Checklist

  1. Confirm the documents required by the destination country in advance.
  2. Prepare the commercial invoice and packing list consistently.
  3. Match every document's description and quantity.
  4. Obtain certificates of origin and product certificates early.
  5. Review everything once more before the goods sail.

Final Takeaway

Documentation is where small mistakes become expensive delays. Keep the core documents consistent, verify destination requirements early and treat paperwork as part of the shipment, not an afterthought.

This is an independent informational guide and does not constitute legal or customs advice. Requirements vary by country, product and mode of transport.