1. You guys are completely wrong with your reserve requirement math.
If a bank has reserves of $1000(checking deposit) and a reserve requirement of 10%, then the bank is allowed to loan not $900 dollars, but $10,000.
Why.
Because the amount of deposits required is the reserve requirement multiplied by the liabilities. 10,000 * 0.1 = 1,000
2. Reserve requirements are not 10%. According to
federalreserve.gov,
the reserve requirements are dependant on the individual institution's "Net transaction accounts". If they are under 7 million, the reserve requirement is 0. If they are between 7 and 47.6 million, then the reserve requirement is 3%, any higher than that is 10%. Time deposits have no reserve requirement.
3. Reserves are a joke. Why? Because a reserve is simply a deposit of money that was created out of thin air at another institution. Fannie Mae and Freddie Mac for example create the money for mortgages, then package the debt as mortgage backed securities. When another institution buys those securities, they are now considered an asset, and further loans can be made against them.
4. The Fed has no reserve requirement. Each and every time they loan money it is created out of thin air, and private investors earn the interest(indirectly through the member banks shareholders). These private investors are getting hundreds of billions of dollars for doing nothing. It is unconstitutional, immoral, and down right disgusting.
I could go on and on, but i'm hungry.
Matt
P.S.
The bank with that deposit of $1000 has loaned out $10000 at 10% interest(historically not a high interest rate). The bank is now profitting $1000 per year from that $1000 dollar deposit, for doing virtually no work(except for employing some pencil pushing monkeys). The guy who deposited the $1000 dollars gets maybe $50, or 50/1000 = 5% of the banks profits.