North American Free Trade Agreement (NAFTA) Certificate of Origin
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. |