Postal Code Lookup

Validate postal codes for CFDI and check border zone rates

Postal Codes and CFDI Invoicing

Mexican postal codes are required on every CFDI invoice and determine the applicable IVA tax rate. Postal codes in the northern border zone (franja fronteriza) qualify for a reduced 8% IVA rate instead of the standard 16%. This free tool validates postal codes against the official SAT catalog, detects border zone status, and shows the state, municipality, and applicable IVA rate.

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