And that figure does not even count any money being held in Switzerland. That is a staggering amount of money. Keep in mind that U.S. GDP in 2010 was only 14.58 trillion dollars. So why do the global elite go to such trouble to hide their money in offshore banks? Well, there are two main reasons. One is privacy and the other is low taxation. Privacy is a big issue for those that are involved in illegal enterprises such as drug running, but the biggest reason why people move money into offshore banks is in order to avoid taxes. Some set up bank accounts in foreign nations because they want to legally minimize their taxes and others set up bank accounts in foreign nations because they want to illegally avoid taxes. You would be absolutely amazed at what some large corporations and wealthy individuals do to get out of paying taxes. Unfortunately, the vast majority of the rest of us don't have the resources or the knowledge to play these games, so we get taxed into oblivion.
So why do they call it "offshore banking"? Source/full story