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Guide to Using the North American Free Trade Agreement (NAFTA)

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Before you begin to fill out the NAFTA Certificate of Origin form you should have the following information

 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.