Coinciding with the start of the general filing period for Corporate Income Tax and Non-Resident Income Tax corresponding to permanent establishments and entities under the income attribution regime established abroad with a presence in Spanish territory, year 2025, a page has been published that brings together all the news and aids for the campaign.

Since June 18, access to tax data has been available, which can be transferred to the Companies Web form (or imported by software developed by the taxpayers themselves or by third parties), and which allows the direct submission of the self-assessment of the Corporate Tax.