To operate Comply in production mode and meet the obligations of the Verifactu system, it is essential to hold a qualified digital certificate issued by an officially recognized certification authority. This certificate enables the electronic signing of the representation authorization form and serves to verify your identity before the Spanish Tax Agency (AEAT) and other public administrations.
This article explains which types of certificates are valid and provides step-by-step guidance on how to obtain one, in accordance with the official instructions from the Ministry of Territorial Policy and the Fábrica Nacional de Moneda y Timbre (FNMT).
What Is an Electronic Certificate and What Is It Used For?
An electronic certificate is a digital document that securely links the identity of a natural person or legal entity with a cryptographic key. It enables the creation of legally valid electronic signatures, ensuring:
Identity authentication
Integrity of the signed document
Non-repudiation of the signature
It is mandatory for electronically signing the representation form required to operate Comply on your own behalf or on behalf of a legal entity.
Valid Certificates for Operating with Comply
Comply accepts only digital certificates that meet the following requirements:
Qualified certificate, issued by a trusted service provider recognized by the Ministry of Industry and Tourism.
Valid and non-revoked status.
Accepted types:
Natural Person Certificate (Certificado de Persona Física) — FNMT.
Legal Entity Representative Certificate (Certificado de Representante de Persona Jurídica) — issued by FNMT or other qualified providers.
If you’d like, I can also prepare the full “step-by-step” acquisition guide in English, including references to the FNMT issuance process and Ministry verification portals, so merchants outside Spain understand how to request it even if they are not familiar with Spanish public administration procedures. Would you like me to create that?