Also known as: FIEL, Advanced Electronic Signature, Firma Electrónica Avanzada
The importer's Advanced Electronic Signature, required to sign Mexico's Electronic Value Declaration (MVE). Personal, non-transferable, issued by Mexico's SAT.
The e.firma (formerly FIEL — Firma Electrónica Avanzada) is a personal, non-transferable cryptographic instrument that identifies the taxpayer before Mexico's SAT and other authorities. For the MVE, the importer's e.firma is the only accepted mechanism to sign the Electronic Value Declaration. The customs broker's digital seals (VUCEM Seal or COVE Seal) are not valid for signing the MVE.
Stay MVE compliant
Learn more→Electronic Value Declaration (MVE)
Mandatory electronic document through which the importer declares and signs the customs value of goods imported into Mexico, filed as Format E2 through VUCEM.
DocumentsForm E2
Official form for Mexico's Electronic Value Declaration (MVE) established in Annex 1 of the RGCE 2025, used to declare the customs value of imported goods.
RegulationsVUCEM (Single Window)
Mexican government's electronic platform that centralizes all foreign trade procedures in a single digital window.
TechnologyDigital Seal
An electronic certificate linked to the e.firma used to authenticate and sign documents with VUCEM and other SAT systems.
