Under a new provision added to the Basel II Implementing Decree, a bank or investment institution that calculates the risk-weighted assets on the basis of an internal model method must maintain a minimum amount of regulatory capital through the 2011 financial year. The same applies to banks or investment institutions that calculate the solvency requirements for operational risk on the basis of the calculation method prescribed by the Decree on Prudential Rules FMSA (section 78).

The minimum amount of regulatory capital is calculated as a percentage of the regulatory capital calculated under sections 60-62 of the Decree on Prudential Rules FMSA, as they read before 1 January 2007.

The amended Basel II Implementing Decree entered into force on 16 February 2011 and has retroactive effect from 1 January 2010.