Determine when to use Certificate of Origin ( Form 434 )
Have the exporter's tax identification number* and address
Have the producer's tax identification number and address
Have the importer's tax identification number and address
Find your HS classification number
Determine your preference criterion
Have the producer's tax identification number and address
With this information you can fill out the Certificate of Origin using the NAFTA Interactive Tool.
*What is the Tax Identification Number?
Canada: the employer number of importer/exporter assigned by the Canada Customs and Revenue Agency;
Mexico: the federal taxpayer’s registry number (RFC);
United States: the employer’s identification number or Social Security Number.
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