when a new mortgage is originated, that money does not come out of a bank vault. Instead, the money is created as a result of the loan. The bank supplies it to the borrower as a bank credit, with the borrower promising to repay the principal plus interest at a future date. This new debt is registered with a federal reserve or a central bank to the commercial bank’s account, allowing it to now loan out more money based on a multiple of that new loan—usually at a ratio of ten or more to one. So the more money the bank lends, the more it has available to lend.”
