Q. What are your reasons for thinking that "Islamic banking isn't Islamic"?

Nadine Marroushi interviewed Tarek El Diwany in London during Summer 2007.

A. "My point is a little more refined than that. I am saying that Islamic commercial banking is not Islamic, and this is because commercial banking is a combination of usury and misrepresentation. The practice of usury is obvious and involves the advancing of money now in return for more money later, while the misrepresentation is less obvious and involves the creation of money out of nothing. Most of the time, the money that commercial banks lend is money that they themselves have created. Since neither usury nor misrepresentation can be Islamised, and since the business model of commercial banking requires both, there cannot be such a thing as Islamic commercial banking. For the same reason, there cannot be such a thing as an Islamic central bank. Historically, the Muslim world has had neither commercial banks nor central banks, though of course it did have institutions that fulfilled permissible functions such as payment transfer. In our rush to create an Islamic banking and finance industry, we have forgotten to ensure that the money we are using is itself Islamic. Islamic finance cannot be practiced with money that is un-Islamic. We therefore need a very fundamental reform of the institutional framework in Islamic banking and finance, but unfortunately the industry is simply refusing to address the issue."

http://www.islamic-finance.com/item149_f.htm