The Tax Exchange agreement was published in the Spanish Gazzette the 15/7/2011
As per article 1, the agreement will facilitate that the competent authorities of the Contracting Parties shall provide assistance through exchanging information that is foreseeably relevant to the administration and enforcement of the domestic laws of the Contracting Parties concerning taxes covered by this Agreement.
Such information shall include information that is foreseeably relevant to the determination, assessment and collection of such taxes, the recovery and enforcement of tax claims, or the investigation or prosecution of tax matters. Information shall be exchanged in accordance with the provisions of this Agreement and shall be treated as confidential in the manner provided in Article 8. The rights and safeguards secured to persons by the laws or administrative practice of the Requested Party remain applicable to the extent that they do not unduly prevent or delay effective exchange of information