Banks Don't Lend Out Reserves

"Firstly, here’s a short explanation of bank lending. Under normal circumstances, deposits and loans are more-or-less equal across the banking system as a whole. This is because when a bank creates a new loan, it also creates a new balancing deposit. It creates this “from thin air”, not from existing money: banks do not “lend out” existing deposits, as is commonly thought."

"When the Fed buys private sector assets from investors, it not only creates new deposits, it creates new reserves. This is because a new deposit (liability) in a bank must be balanced by an equivalent asset. When banks create deposits by lending, the equivalent asset is a loan. When the Fed creates deposits by buying assets, the equivalent asset is an increase in reserves, also newly created. So it does not matter how much lending banks do, if the Fed is creating new deposit/reserve pairs by buying assets from private sector investors then deposits will ALWAYS exceed loans by the amount of those new reserves."


http://www.forbes.com/sites/francescoppola/2014/01/21/banks-dont-lend-out-reserves/