This Handbook aims to explain the nature and importance of consolidated supervision of banks and the techniques by which it can be implemented. It begins by describing the pioneering work of the Basle Committee in relation to the consolidated supervision of international banking groups. It then discusses the many different forms of corporate grouping to which banks may belong and the particular difficulties which can arise in the supervision of such banks. The construction of consolidated prudential reports is considered with emphasis on the scope of consolidation and the accounting techniques which can be used for the purpose. The scope for carrying out quantitative monitoring of banks on the basis of consolidated reports is described. After examining qualitative aspects of consolidated supervision, the Handbook discusses problems peculiar to the consolidated supervision of international banking groups and describes the initiatives which have been taken at international level to overcome them. This handbook is also available in Spanish.