WARNING: This change does not affect users of the current portal or the new headquarters of the Tax Agency, who will be able to continue accessing the portal as usual.

On December 1, 2021, the Tax Agency will proceed to change the electronic certificates used to offer services to taxpayers. This change responds to managing the upcoming expiration of certificates and the need to adapt the electronic headquarters certificate to the requirements of article 18. Identification of electronic offices and associated electronic offices, of Royal Decree 203/2021, of March 30, which approves the Regulations for the action and operation of the public sector by electronic means. In addition, in order to strengthen the security of the services offered to taxpayers, access using the TLS1.0 and TLS1.1 protocols will be disabled.

The new electronic certificates will be signed by the certification services provider Entrust. These electronic certificates are recognized by major browsers and the Java virtual machine. The domains affected by this change are:

• agenciatributaria.gob.es
• agenciatributaria.es
• aeat.es

In the case of entities that access from applications developed specifically to use the services of the Tax Agency, it is necessary to confirm that their systems will support the new electronic certificates when invoking the services. To do this, you will need to check whether your systems trust the certificates from the Certification Authority (CA) with which the new electronic certificates from the Tax Agency will be signed.

Below are the Entrust AC ROOT and AC INTERMEDIATE public keys so you can download and configure them if needed: