Because almost all of our [created] money is ‘on loan’ from banks, someone has to pay interest [on it]. This interest redistributes money from the bottom 90% of the population to the very top 10%. Meanwhile, inflated house prices and financial instability all lead to a growing gap between the poor and the rich.

Source: http://positivemoney.or-g/issues/inequality/
(remove hyphen fro "or-g" to use URL above)