Development Of The Basel II Accord

Using the Consultative Committee approach to ensure that the new regulations have a positive impact. Committee issued a Consultative papers and followed by a period for consultation and revision.

Consultation period consists of a series of Quantitative Impact Studies (QIS), which some banks estimate the impact of the implementation of Basel II on the basis of the Consultative paper issued. Consultative papers and QIS has publish are:
Consultative Paper no. 1 - June 1999
QIS No. 1 - Q3/2000
Consultative Paper no. 2 - January 2001
QIS No. 2 - Q2/2001
QIS No. 2.5 - Q4/2001
QIS No. 3 - Q4/2002
Consultative Paper no. 3 - April 2003
The results of this paper is the issuance of the Basel II Accord in June 2004.

Some analysis on the QIS 3 is based on estimates because of the lack of data, so that in 2004 and 2005 several member countries of the Basel Committee issued a 'national impact study'. In Q4 2004 Committee mengelurkan materials and guidance for local bank supervisors as the basis of 'national impact study' them → study was finally called QIS 4 and run by bank supervisors in the USA and Germany.

Consultative approach used by the Basel Committee Committee based on the desire to not change the total capital of the banking industry.