Since February 22, 2022, the Tax Agency's power of attorney registry is connected to the Electronic Power of Attorney Registry (REA) operated by the General Secretariat of Digital Administration (SGAD), with the powers registered in said registry having effect against the Tax Agency.

Powers previously registered in the REA will not be transferred to the Tax Agency's power of attorney registry.

The registration of powers that exclusively affect the Tax Agency continues to be carried out on the Tax Agency's electronic headquarters.