US to Mexico: Mexico Customs Transborder Regulations and Data Requirements

Required Data for U.S. to Mexico Shipments

Shipments to Mexico that originate on CSX are interchanged with BNSF, KCS or UP at the border. To minimize delays, the following should be provided on bills of lading (or shipping instructions) to CSX:

1. Effective Nov. 6, 2006, the following parties require full address (street, city, state/province):
- Shipper
- Consignee
- Care of Party
- Ship From
- Pick Up
2. Freight forwarder
3. Exporter name (if different from the shipper/consignee)
4. Broker name, city, state, and patente number if known
5. Country of origin (rail origin)
6. Full route information
7. Value of shipment and specific currency (for bonded shipments)
8. Piece count
9. Weight and unit of measure
10. Destination port and country (rail destination or port for multi-modal shipments)
11. Commodity description (Must be specific and detailed. FAK [freight of all kinds] or STC [said to contain] type descriptions, etc., are not acceptable and will be rejected by Customs.)
a. Harmonized Commodity Code if available (required for TE-type bonded shipments
12. Type of customs entry required (for bonded shipments)
13. Seal Number(s)

How the U.S. to Mexico Shipment Process Works

The following steps occur when pre-clearing a rail car moving from the U.S. into Mexico:
1. The origin shipper documents the car with the origin railroad carrier by submitting shipping instructions and provides the information to the U.S. freight forwarder.
2. The U.S. railroad at the border issues a despacho previo notice within hours following on-line billing or receipt of a waybill from connecting rail carriers.
3. The U.S. freight forwarder furnishes the necessary documentation for an export movement into Mexico (including copies of the waybill) to the Mexican customs broker.
4. The customer establishes how export duties or other dues will be paid with the U.S. freight forwarder. The Mexican customs broker pays the import duties.
The Mexican customs broker pre-documents the shipment with Mexican Customs.
5. The Mexican customs broker pre-documents the shipment with the U.S. railroad at the border.
6. The Mexican customs broker delivers the pre-filed documentation to the U.S. freight forwarder.
7. The U.S. freight forwarder delivers copies of all documents to the U.S. connecting railroad at the border, and pays any document delay or demurrage/per diem, if applicable.
8. Finally, the U.S. railroad pre-notifies the car to cross into Mexico.
9. With despacho previo, cars cross into Mexico for final delivery without being detained at the border. The exception to this process is when Mexican authorities (Hacienda = Treasury) randomly check cars at port of entry.


Carload EDI example  (PDF)

Intermodal EDI example  (PDF)

CSX de Mexico, CSX's office in Mexico City, provides assistance with shipping to and from Mexico. Learn more

For assistance with U.S. to Mexico shipping instructions, call 1-877-ShipCSX (1-877-744-7279), option 2.