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Practical Handbook for Companies 2025.

Filing of Corporation Tax returns in cases of joint taxation

When filing corporate tax returns in cases of joint taxation to the State Administration and the Provincial Councils of the Autonomous Community of the Basque Country and/or the Foral Community of Navarre in corporate tax, it is necessary to differentiate between:

  1. Declarations to be submitted by taxpayers subject to joint taxation being applicable the state regulations:

    1. Before the State Administration, the taxpayer must file the Corporate Tax return in accordance with state regulations.

      In this regard, Article 2.11 of the Order HAC/529/2026, of May 7, establishes that for the declaration to be submitted to the State Administration, the form and place of submission will be those that correspond, according to the model in question, of those regulated in this Order. For its part, Article 4.1 of the aforementioned Order regulates the general obligation to submit corporate tax returns electronically.

    2. Before the Provincial Councils of the Basque Country and/or before the Chartered Community of Navarre, The taxpayer must submit the Corporate Income Tax return in the manner and place determined by the tax authorities themselves, and the payment or refund due must be made to each of these authorities, using the payment and refund documents approved by the regional regulations, without prejudice to the possibility of submitting forms 200 or 220, as established in Article 2.11 of Order HAC/529/2026, of May 7. Likewise, article 4.2 of the aforementioned order establishes that in these cases, taxpayers may connect to the electronic headquarters of the State Tax Administration Agency, which can be accessed directly through the following electronic address: https://sede.agenciatributaria.gob.es and, within the "My files" section in "My personal area", select the declaration submitted to the State Administration and print a copy of it, using as the payment or return document the one approved by the Provincial Councils of the Basque Country and by the Foral Community of Navarra.

  2. Declarations to be submitted by taxpayers subject to joint taxation where the regional regulations apply:

    1. Before the Provincial Councils of the Basque Country and/or before the Foral Community of Navarra, the taxpayer must submit the Corporate Tax return, in accordance with the regulations and procedures that they have established.

    2. Before the State Administration, According to the provisions of article 4.2 of Order HAC/529/2026, of May 7, taxpayers subject to the regional regulations for the presentation of Corporate Income Tax returns may use either the forms 200 and 220 approved in this Order, making their presentation electronically, or the form approved by the corresponding regional regulations. If you choose to submit the form approved by the regional regulations, you must register the corresponding form with the Tax Administration. As a new feature, this form will accept a processable format that uses an extensible markup language (file XML(in its English acronym), and likewise, the payment or refund documents approved in Annexes I and II of the aforementioned Order HAC/529/2026, of May 7, which are available on the Electronic Headquarters of the State Tax Administration Agency, which can be accessed directly through the following electronic address: https://sede.agenciatributaria.gob.es .