This paper surveys the relationships between investment banking and the eco
nomy. The author focuses on the connection between investment banking and c
ommercial banking. He begins with an analysis of universal banking; he then
presents the model of strict separation of commercial and investment banki
ng. The third section analyzes the combined bank system and its connection
to non-financial firms in Germany, Japan and United States. The article con
cludes with a summary of the main problems of investment banking in the Cze
ch Republic. Today, Czech investment banking is going through a period when
it must solve several questions arising from its unconventional origin.