The customs clearance for commercial cargo is the process that involves the clearing' of goods through the customs barriers for importers and exporters (usually businesses).
This involves the preparation of documents and or electronic submissions, for the calculation and usually the payment of taxes, duties and goods and service tax.
In many cases, the documentation may also vary depending on the country of origin or destination. Thus, documents may have to be prepared in a particular way to comply with the requirements of the import or export country.
As a rule of thumb, a standard importing or exporting transaction usually requires a commercial invoice, quarantine packing declaration,packing list, bill of Lading and an insurance certificate ,depending on your Inco terms.