- Adaptation of cryptographic algorithms

On December 11, 2024 , the Tax Agency will proceed to adapt the cryptographic algorithms of the sub-office "www1.agenciatributaria.gob.es" according to the criteria indicated in the following link Tax Agency: Validation of the headquarters certificate . The remaining sub-venues have already had the appropriate configuration since November 15, 2023. The new configuration can be tested at the test sub-site https://preportal.aeat.es .