The Harmonized Tariff Code (HST) is a classification system using 6 digits that is used worldwide in classifying goods moving in international trade under a single commodity. The Schedule B numbers are part of the Harmonized Code and are used only by the United States for export purposes. They allow for better definition of export commodities by extending the HST from 6 digits to 10 digits. The Schedule B numbers are needed to fill out the Shipper’s Export Declaration, commercial invoices and other documents for products leaving the United States.

Schedule B numbers may be obtained at the United States Export Website.

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