These two documents travel together on nearly every international shipment, and new exporters often assume they're interchangeable. They're not — each serves a distinct purpose for customs, and missing or inconsistent information on either can hold up a shipment.
Commercial Invoice: The Financial Record
The commercial invoice is the transactional document — it states what was sold, to whom, for how much, in what currency, and under what terms of sale. Customs uses it primarily to determine the declared value for duty assessment.
Packing List: The Physical Record
The packing list describes what's physically in the shipment — item counts, weights, dimensions, and how goods are packed (cartons, pallets, etc.) — without necessarily including pricing. It's what a warehouse or customs inspector uses to verify the physical contents match what was declared.
Where Mismatches Cause Problems
- Different item descriptions between the two documents (e.g., "cotton shirts" on one, "apparel" on the other)
- Quantities that don't reconcile — the packing list should match the invoice line items exactly
- Weight discrepancies between declared and actual, which can trigger a physical exam
Customs doesn't need your documents to be impressive — it needs them to be consistent. The fastest way to trigger an exam is a mismatch between two documents describing the same shipment.