4.3.4. Immediate disclosure of information (SII)

On July 1, 2017, the VAT management system began to be applied, based on the Immediate Supply of Information (SII). This system, mandatory for certain taxpayers and optional for the rest, represented a radical transformation in tax processing, both from the point of view of assistance and control.

During 2022, the following new features have been introduced: new VAT rate of 5% for certain deliveries of electrical energy; new VAT rate at 0% in relation to certain essential goods; allow entry of VAT invoices with the new equivalence surcharges of 0% and 0.62%; modifications to SII calculations for the preparation of pre-303 aggregate books based on the previous modifications; Web service for consulting Aggregated Books (LL.AA.) in the SII. Likewise, SII 2018 information exchange developments have been carried out with the Basque Provincial Treasury and progress has been made in the developments to enable the implementation of a daily exchange of invoices in 2023.