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Invoice changes in Mexico delayed until 2018

December 20, 2017

On November 2nd, 2017, we notified you that the Mexican tax authority known as the SAT (Sistema de Administracion Tributaria) has published new requirements related to invoices issued by Mexican companies. The original effective date was December 1, 2017; however, we have now been informed that SAT has delayed the implementation and the new tentative effective date is January 1, 2018.  

As a reminder, these changes are the responsibility of all Mexican businesses and customers, not simply KCSM.

In summary, the changes include:

  • Invoices must now carry standard field names and service description codes outlined in the official SAT catalog
  • Credit memos must reference the applicable invoice(s)
  • Cancellations and/or subsequent reinvoicing must have customer and SAT approval within 72 hours
  • Companies must now issue payment receipt confirmations

For more information on this change, please visit the SAT website where the full CFDI 3.3 guide is available for review (Spanish only). Additionally, KCSM will provide a more detailed letter to contacts of our KCSM Credit and Collections team.

Should you have any questions on the above, please contact KCSM’s Invoicing and Credit & Collections department. 

Thank you for being a loyal customer.