BASEL II normative and the Size of Banks
The mentioned regulations will be  adapted to the norms of BASEL II in order to
  be applied in Argentina as of  2010. Without considering the large benefits that would
  contribute these norms as far as  transparency and financial stability, that in indeed will
  be significant, we could also expect  certain repercussions with respect to the banking
  costs analyzed, as following  mentioned.
  Among other modifications to the  risk measurement systems, the new regulation
  put greater emphasis on internal  risks management of the bank denominated
  `operational risk', that is to say,  when the new norm being applied the organizations
  must include the risks derived from  their operations to calculate its requirements of
  capital, and not only the credit  risks. In order to confront and to measure this operational
  risks the banks will have to apply  methods and techniques approved by the Central
  Bank, which are fitted in three  basic types defined by BASEL II: Basic Indicator
Approach, Standardized Approach,  Advanced Measurement Approaches (AMA):
- The basic indicator is  calculated with `fundamentals' of the company, like the
  annual gross income of the last  three years;
- The Standardized Approach divides  the activities of the bank in eight lines of
  businesses and its relative weight  within the organization;
- The Advanced Measurement  Approach is the most complex level and requires
  the institutions to develop their  own internal operational risk measurement
system, in agreement with some general criteria and  norms supervised and
  approved by the Central bank.
Another indication of BASEL II  establishes that the structure or person
  responsible of the operational risk  will have to be independent of the department of
  internal audit, reason why an  increase in operative cost could be expected.
  Although the new norms do not affect  the capital requirements directly, it could
  do it on an indirect way mainly to  smaller financial organizations, since they modify the
  calculation formula:
In first place, the consideration of  the operational risk would add another
  weighted factor of risk, which would  negatively affect the qualification of the portfolio
  of SMEs.
Secondly, the implementation of a  structure to evaluate the operational risks
  could increase as well the operative  costs of the banks, reducing the possible economies
  of scale in the information  generation and increasing the information asymmetries.
According to some analysts  (Perrotta, 2007) in the countries that have adopted
  these norms, or those which have an  advanced implementation, the minimum capital
  requirements have increased between  5.5% and 8.9% in Europe and 4% to 13.5% in the
  other countries. In general it is  considered that the impact will be greater in less
  developed financial systems even  increasing the requirements until 50%. In the same
  way, in the Argentinean case, the  financial organizations less prepared to confront these
  modifications are the regional  banks, the smaller institutions and the branches of foreign
  banks with  few offices in the country.
Anonimo (01 de Sep de 2008). "BASEL II normative and the Size of Banks". [en linea]
 Dirección URL: https://www.econlink.com.ar/information-banking/basel-size-banks (Consultado el 14 de Mayo de 2021)