For the purposes of imposing a capital add-on pursuant to Article 37(1)(a) or (b) of Directive 2009/138/EC, supervisory authorities shall calculate the capital add-on as the difference, at a given point in time, between the following:
(a) the Solvency Capital Requirement of the insurance or reinsurance undertaking, excluding any previous or simultaneous capital add-on, that would be calculated if the standard formula or internal model, as appropriate, were modified so as to reflect the actual risk profile of the insurance or reinsurance undertaking and to ensure compliance with Article 101(3) of Directive 2009/138/EC;
(b) the Solvency Capital Requirement of the insurance or reinsurance undertaking, excluding any previous or simultaneous capital add-on.