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The importance which has historically been attached to the money supply in the monetary policy of central banks is due to the suggestion that movements in money may determine important economic variables like prices (and hence inflation), output and employment.
Basic economics also teaches that the money supply shrinks when loans are repaid; [13] [14] however, the money supply will not necessarily decrease depending on the creation of new loans and other effects. Other than loans, investment activities of commercial banks and the Federal Reserve also increase and decrease the money supply. [15]
Quantity theory of money. The quantity theory of money (often abbreviated QTM) is a hypothesis within monetary economics which states that the general price level of goods and services is directly proportional to the amount of money in circulation (i.e., the money supply), and that the causality runs from money to prices.
Consequently, the importance of the money supply as a guide for the conduct of monetary policy has diminished over time, [57] and after the 1980s central banks have shifted away from policies that focus on money supply targeting. Today, it is widely considered a weak policy, because it is not stably related to the growth of real output.
Monetarism is an economic theory that focuses on the macroeconomic effects of the supply of money and central banking. Formulated by Milton Friedman, it argues that excessive expansion of the money supply is inherently inflationary, and that monetary authorities should focus solely on maintaining price stability.
Money supply is determined by central bank decisions and willingness of commercial banks to loan money. Money supply in effect is perfectly inelastic with respect to nominal interest rates. Thus the money supply function is represented as a vertical line – money supply is a constant, independent of the interest rate, GDP, and other factors.
The money supply of a country comprises all currency in circulation (banknotes and coins currently issued) and, depending on the particular definition used, one or more types of bank money (the balances held in checking accounts, savings accounts, and other types of bank accounts). Bank money, whose value exists on the books of financial ...
Money multiplier. In monetary economics, the money multiplier is the ratio of the money supply to the monetary base (i.e. central bank money). If the money multiplier is stable, it implies that the central bank can control the money supply by determining the monetary base. In some simplified expositions, the monetary multiplier is presented as ...