Motives for holding money

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Money Financial asset that pays a relatively low return -- why do people hold it? Fractional reserve banking -- the money creation process. Banking panics and bank runs.

Motives for holding money Medium of exchange -- avoids double coincidence of wants. Unit of account -- $ provide a good yardstick. Store of value -- mattress savings.

Money demand The real opportunity cost of holding money is the nominal interest rate (lose the real return on bonds plus the loss of purchasing power from inflation) As incomes increase, households hold more money. M d = L(i, Y) - +

Money supply: Set by Federal Reserve through open market operations. Equilibrium in money market determines the (nominal) interest rate

Measuring Money Money is any asset that can be used as a medium of exchange. Two most frequently used measures: M1 = sum of currency outstanding and balances held in checking accounts M2 = All assets in M1 plus other savings vehicles that can be used to make payments (e.g. savings deposits, money market mutual funds)

Fractional reserve banking and money creation Households deposit currency in banking system. Banks holds some fraction in reserve and lend out the rest. Loan proceeds are re-deposited in the banking system. Banks again holds some fraction in reserves and loans out the rest. Process continues until system is fully ``loaned up.

Bank Balance sheets in the money creation process Assets Liabilities Bank A 100 100 Bank A 10 100 Loans 90 Bank B 90 90 Bank B 9 90 Loans 81

Bank balance sheets after lending Bank A 10 100 Loans 90 Bank B 9 90 81 Bank C 8.1 81 Loans 71.9 Banking 100 1000 System Loans 900

Determining the quantity of deposits Question: How many deposits can $100 in reserves support? Bank = Bank Reserves/Reserve ratio If reserve ratio = 0.1 (10% of deposits are held in reserves), then deposits = $1000

Example: The money supply with currency and deposits Suppose $50 are held in currency and $50 is deposited in the bank as bank reserves. In general, we have Money supply = currency + reserves/reserve ratio In this example: Money supply = currency plus deposits. = $50 + $50/0.1 = $550.

Bank Runs Self fulfilling expectations: if people believe bank will fail, they will run on the bank to withdraw their money. If everyone withdraws their money at once, bank cannot cover the withdrawals given reserves on hand. Bottom line: fractional reserve banking makes system vulnerable to runs. Possible solution: Deposit Insurance (but this has incentive problems bank managers take too many risks).

Activities of Federal Reserve Conduct of Monetary policy: Open Market Operations Discount window lending: Fed can lend bank reserves directly to commercial banks Reserve requirements: Fed can change the required amount of reserves that must be held by banks. Bank Supervision and Regulation Financial stability eg. Lender of last resort, supply liquidity to market, guarantee payments system.

Open Market Operations The Federal Reserve can change the money supply by buying or selling govt. bonds from the public. Increase money supply: Fed buys $1000 in govt. bonds from the public These govt. bonds are paid for using currency which is deposited in banking system as bank reserves. If reserve-deposit ratio is 10%, the money supply will increase by $10,000 owing to money multiplier. Conclusion: Money multiplier effect gives the Fed significant leverage to change money supply by changing quantity of bank reserves.