Measures of money

_Measures of money_

The money supply is the amount of financial instruments within a specific economy available for purchasing goods or services. The money supply is usually measured as three escalating categories M1, M2 and M3. The categories grow in size with M1 being currency (coins and bills) and checking account deposits. M2 is currency, checking account deposits and savings account deposits, and M3 is M2 plus time deposits. M1 includes only the most liquid financial instruments, and M3 relatively illiquid instruments.

Another measure of money, M0, is also used, although unlike the other measures, it does not represent actual purchasing power by firms and households in the economy. M0 is base money, or the amount of money actually issued by the central bank of a country. It is measured as currency plus deposits of banks and other institutions at the central bank. M0 is also the only money that can satisfy the reserve requirements of commercial banks.