e.Firma and Electronic Signagure

An e.Firma is electronic certification key associated with a Mexican RFC ID for making filings before the Mexican government. The e.Firma is necessary for companies to file corporate tax declarations, import products, hire workers, obtain authorizations for healthcare products from COFEPRIS, apply for trademark protection, and hundreds of other procedures before the Mexican government.

The e.Firma is obtained in conjunction with a Mexican RFC ID, the latter being a requirement for obtaining an e.Firma. All companies must have both an RFC ID and an e.Firma to operate.