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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.
The multiplier may vary across countries, and will also vary depending on what measures of money are being considered. For example, consider M2 as a measure of the U.S. money supply, and M0 as a measure of the U.S. monetary base. If a $1 increase in M0 by the Federal Reserve causes M2 to increase by $10, then the money multiplier is 10.
The money multiplier theory presents the process of creating commercial bank money as a multiple (greater than 1) of the amount of base money created by the country's central bank, the multiple itself being a function of the legal regulation of banks imposed by financial regulators (e.g., potential reserve requirements) beside the business ...
In some economics textbooks, the supply-demand equilibrium in the markets for money and reserves is represented by a simple so-called money multiplier relationship between the monetary base of the central bank and the resulting money supply including commercial bank deposits. This is a short-hand simplification which disregards several other ...
Under this view, the money multiplier compounds the effect of bank lending on the money supply. The multiplier effect on the money supply is governed by the following formulas: = : definitional relationship between monetary base MB (bank reserves plus currency held by the non-bank public) and the narrowly defined money supply, ,
The MPS plays a central role in Keynesian economics as it quantifies the saving-income relation, which is the flip side of the consumption-income relation, and according to Keynes it reflects the fundamental psychological law. The marginal propensity to save is also a key variable in determining the value of the multiplier.
The coefficient reflects the proportion of the total of goods and services of an economy that is monetized—being actually paid for in money by the purchaser—to substitute bartering. [6] This is one of the most important characteristics of the level and course of economic development. [7]
Economics (/ ˌ ɛ k ə ˈ n ɒ m ɪ k s, ˌ iː k ə-/) [1] [2] is a social science that studies the production, distribution, and consumption of goods and services. [3] [4] Economics focuses on the behaviour and interactions of economic agents and how economies work.