FAQs

You will find instructions on how to obtain a user certificate in the links provided below in this Help section.

The specific steps to follow will depend on which Certification Authority you've chosen to issue your certificate. Check the website of the Certification Authority you've chosen. Remember that for tax relations with the Tax Agency you must be one of the accepted certification authorities, which you will find in Electronic certificate issuing entities .

Differences exist depending on whether the certificate you wish to obtain is purely computer-based or if you want to receive it in the form of a card. This decision will determine the different steps you must follow. In either case, a step is always necessary which consists of proving the identity before a Registry Office.

Once you've chosen whether you want to receive an electronic or card-based certificate, you'll need to provide specific documents to prove your identity depending on which type you've chosen.

The specific steps to be followed will depend on the Certification Authority that you have chosen to issue your certificate. Consult the web page of the authority that you have chosen. Remember that for tax dealings with the Tax Agency, your Certification Authority must be one of those that have been approved, the list of which you will find in the section Organisations that Issue Digital Certificates accredited by the Tax Agency.

Thus for obtaining a certificate in software format, in the case of the certification authority of the FNMT (Spanish National Mint) the steps are:

• Request of the via Internet certificate.
• Proof of identity before one of the registration offices established by the Certification Authority. The documentation to provide when verifying your identity will depend on the type of electronic certificate requested.
• Download of the via Internet certificate.
• Carrying out backup of the certificate.

Depending on the Certification Authority chosen, you can obtain an electronic certificate using your electronic ID. Consult the web page of the authority that you have chosen. Currently, the FNMT offers the possibility of obtaining your certificate as a natural person or representative for sole and joint administrators using your electronic ID; For more information, please visit the website of the National Mint and Stamp Factory.  

The new IDs which incorporate electronic certificates are emitted by the National Police Force through the Ministry of the Interior. With these electronic certificates, you can carry out any formality with the Tax Agency that may require you identification.

The steps for obtaining the certificate in cryptographic card format will depend on the procedure established by the Certification Authority chosen by the applicant. Consult the web page of the authority to learn about it. Remember that in order to carry out telematic procedures with the Tax Agency, the certificate must be issued by one of the authorised Certification Authorities. You will find the list of these authorities in Organisations that issue Digital Certificates.

In the case of user certificates on cryptographic cards issued by the Fábrica Nacional de Moneda y Timbre (FNMT) , the requirements to obtain it and to be able to carry out electronic procedures with the Tax Agency are the following:

• Obtain the FNMT's root certificate.
• If you computer does not have a card reader installed:
  • Physically Installing the card reader. This device is connected through a USB port to your computer or to the serial port. Follow the instructions of the manufacturer. Install the drivers provided by the supplier of the reader.
  • If your operating system is Windows 95/98 you will need to install Microsoft's Base Components. You can download them and install them from the FNMT's web page.
• Installation of the software included in the CD-ROM that you will have received together with the card. It is the FNMT's Class 2 cryptographic module for handling cards. If you do not have this CD-ROM, you can download its content from the FNMT's web page.

• Requesting user certificate. To do so, insert the card in the card reader and follow the steps indicated in the web of the FNMT for this procedure. The keys will be generated in the inside of the card, what means that, for security reasons, the private key will not be able to be extracted from the card.
• Identity accreditation at one of the Registry Offices authorised by the Certification Authority. The documentation that will have to be provided for this formality will depend on the type of applicant (natural person, legal person or organisation without legal personality). You will find this information in the web of the FNMT.
• Downloading your certificate on the Internet.

Electronic certificates accepted by the Tax Agency, in accordance with the provisions of Order HAP/800/2014, of 9 May, which establishes specific rules for digital identification and authentication systems with the State Tax Administration Agency, will be issued by the suppliers of services authorised by the Ministry of Industry, Tourism and Trade.

Service providers authorized by the Ministry of Digital Transformation

No, the request and the obtention of the certificate must be carried out from the same computer, browser and user.

Only the data which does not appear in the certificate can be modified for the purpose of communication with the Certification Authority. In order to modify the data in the certificate it is necessary to issue a new certificate.

It is necessary to accept the installation, which will allow it to update the xenroll.dll library which contains cryptographic functions.