Parent institutions in a Member State shall comply, to the extent and in the manner prescribed in Article 18, with the obligations laid down in Parts Two to Four and Part Seven on the basis of their consolidated situation. The parent undertakings and their subsidiaries subject to this Regulation shall set up a proper organisational structure and appropriate internal control mechanisms in order to ensure that the data required for consolidation are duly processed and forwarded. In particular, they shall ensure that subsidiaries not subject to this Regulation implement arrangements, processes and mechanisms to ensure a proper consolidation.

Institutions controlled by a parent financial holding company or a parent mixed financial holding company in a Member State shall comply, to the extent and in the manner prescribed in Article 18, with the obligations laid down in Parts Two to Four and Part Seven on the basis of the consolidated situation of that financial holding company or mixed financial holding company.

Where more than one institution is controlled by a parent financial holding company or by a parent mixed financial holding company in a Member State, the first subparagraph shall apply only to the institution to which supervision on a consolidated basis applies in accordance with Article 111 of Directive 2013/36/EU.

EU parent institutions and institutions controlled by an EU parent financial holding company and institutions controlled by an EU parent mixed financial holding company shall comply with the obligations laid down in Part Six on the basis of the consolidated situation of that parent institution, financial holding company or mixed financial holding company, if the group comprises one or more credit institutions or investment firms that are authorised to provide the investment services and activities listed in points (3) and (6) of Section A of Annex I to Directive 2004/39/EC. Pending the report from the Commission in accordance with Article 508(2), and if the group comprises only investment firms, competent authorities may exempt investment firms from compliance with the obligations laid down in Part Six on a consolidated basis, taking into account the nature, scale and complexity of the investment firm's activities.

Where Article 10 is applied, the central body referred to in that Article shall comply with the requirements of Parts Two to Eight on the basis of the consolidated situation of the whole as constituted by the central body together with its affiliated institutions.

In addition to the requirements in paragraphs 1 to 4, and without prejudice to other provisions of this Regulation and Directive 2013/36/EU, when it is justified for supervisory purposes by the specificities of the risk or of the capital structure of an institution or where Member States adopt national laws requiring the structural separation of activities within a banking group, competent authorities may require the structurally separated institutions to comply with the obligations laid down in Parts Two to Four and Parts Six to Eight of this Regulation and in Title VII of Directive 2013/36/EU on a sub-consolidated basis.

Applying the approach set out in the first subparagraph shall be without prejudice to effective supervision on a consolidated basis and shall neither entail disproportionate adverse effects on the whole or parts of the financial system in other Member States or in the Union as a whole nor form or create an obstacle to the functioning of the internal market.