Money Multiplier: How Banks Create Money
This paper explains the mechanics of the money multiplier and the money creation process within the U.S. banking system. It describes how the Federal Reserve supplies high-powered money, how fractional reserve requirements determine the multiplier effect, and how banks generate demand deposits that expand the broader money supply. The paper also outlines the four primary tools the Federal Reserve can use to increase the money supply—adjusting the reserve requirement, changing the discount rate, influencing public cash-holding behavior, and conducting open market operations—and discusses why the Fed might lower reserve ratio requirements to stimulate bank lending and earnings.
- Introduction to Money Creation: Fed supplies high-powered money; banks create money supply
- The Fractional Reserve System and the Money Multiplier: Fractional reserves enable banks to expand demand deposits
- How the Multiplier Effect Works in Practice: Reserve ratio determines deposit multiplication amount
- Bank Deposits, Liabilities, and Assets: Deposits create bank liabilities and profit-generating assets
- Reserve Requirements and the Federal Reserve: Fed mandates 10% reserve; excess reserves limit money supply
- Four Ways the Money Supply Can Increase: Four Fed tools to expand M1 money supply
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What makes this paper effective
- Uses concrete numerical examples (e.g., $100 deposit expanding to $500 at a 20% reserve requirement) to make abstract monetary concepts tangible and easy to follow.
- Progresses logically from macro-level money creation by the Federal Reserve down to the individual bank transaction level, building the reader's understanding step by step.
- Clearly enumerates the four policy tools the Fed can use to influence the money supply, making the content accessible and organized for exam or reference use.
Key academic technique demonstrated
The paper demonstrates effective use of source integration, weaving in direct quotations from Investopedia alongside paraphrased academic material to support each claim. This technique shows how to blend authoritative definitions with explanatory prose without allowing quoted material to overwhelm the writer's own analysis.
Structure breakdown
The paper opens by introducing high-powered money and the Federal Reserve's role, then moves into the fractional reserve system and the mechanics of the multiplier. It follows with a detailed, quoted illustration of the multiplier effect, transitions to how individual bank deposits create liabilities and assets, covers reserve requirements and the FDIC, and concludes with a numbered list of four specific mechanisms through which the money supply can be expanded.
Introduction to Money Creation
The process of creating money begins with the Federal Reserve, which controls the amount of currency that enters the system. The currency it supplies is called high-powered money, and it is directly controlled by the Federal Reserve. However, high-powered money itself is not the money supply. High-powered money is distributed to two places: the vaults of banks as reserves, or the pockets of individuals and businesses as cash.
Because of the nature of the banking system, banks actually create money. The cash held by banks is called reserves, and these reserves form the base for banks' expansion of checking accounts. When the currency held by the public is added to the deposit (checking) accounts created by banks, the end result is the money supply.
The money supply consists of coins and currency in the hands of the public — controlled by the Federal Reserve — and deposit accounts controlled by the interaction of the households and companies that use money and the banks that generate it. The Federal Reserve is the only authority, however, that can alter the money supply.
The Fractional Reserve System and the Money Multiplier
The money multiplier is the ratio of the stock of money to the stock of high-powered money. The fractional reserve system is a key element in the money supply process. On one side of this system is the Federal Reserve's supply of high-powered money, which is held either as currency by the public or as reserves by the banks. If banks create demand deposits, they must hold some cash in their vaults as required reserves. Banks may also hold excess reserves — cash they do not use to create demand deposits.
The banks' ability to create money from cash is apparent in the positive slope of the demand deposit line: a small amount of reserves becomes a larger amount of demand deposits. Excess reserves do not appear in the money supply, so any increase in excess reserves decreases the supply of money. As long as deposits end up in the domestic banking system, the money multiplier will maintain the same value, and the general increase in the money supply will be the same.
How the Multiplier Effect Works in Practice
According to Investopedia (2004), the multiplier effect depends on the set reserve requirement, and its result can be calculated as the amount banks initially take in divided by the reserve ratio:
"If, for example, the reserve requirement is 20%, for every $100 a customer deposits into a bank, $20 must be kept in reserve, but the remaining $80 can be loaned out to other bank customers. This $80 is then deposited by these customers into another bank, which in turn must also keep 20%, or $16, in reserve but can lend out the difference of $64. This cycle continues as more people deposit money and more banks continue lending it, until finally the $100 initially deposited creates a total of $500 ($100 / 0.2) in deposits. It is this creation of deposits that is known as the multiplier effect. The higher the reserve requirement, the tighter the money supply, which results in a lower multiplier effect for every dollar deposited. The lower the reserve requirement, the larger the money supply, which means more money is being created for every dollar deposited."
References
Epstein, Gene. (October 21, 2002). "Money Supply Makes the World Go 'Round." Barron's.
Investopedia.com. (2004). Multiplier Effect. Retrieved from http://www.investopedia.com/terms/m/multipliereffect.asp.
[University]. (2004). The Banking System and the Money Multiplier. Retrieved from
[University]. (2004). Money Supply: The Fed and the Creation and Control of Money. Retrieved from http://www.uri.edu/artsci/newecn/Classes/Art/INT1/Mac/1970s/Money.supply.html.
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