The Meaning, Formula, Importance, and Factors of the Term “Money Multiplier”

Who invented Money Multiplier, and what is its purpose?

In economics, there is a concept known as Money Multiplier. Credit creation is a term used to describe the idea of producing new money in an economy. The maximum amount of money a bank can create by making adjustments to money deposits (as credit) is another way of putting it. In basic terms, this multiplier shows us how much money banks can create with each dollar of the reserve they have.

Fractional reserve banking is the foundation of this idea. Also known as a credit multiplier, the money multiplier is another name for it.

The primary role of commercial banks, which is to take deposits, is often linked to the multiplier effect. They maintain a portion of the deposits they receive in reserve. Furthermore, they distribute the rest as loans, putting the money back into circulation. Using this strategy has a significant multiplier impact.

Across the world, authorities or regulators have established the amount of money that banks must hold in reserve from their deposits. The reserve ratio, cash reserve ratio, or the needed reserve ratio are all terms for the same thing. Since the multiplier is a ratio of deposits to reserves, we may call it this:

Multiply Your Money

The reserve ratio may be used to compute the money multiplier.

The formula for determining the money multiplier is as follows:

                          = 1/r

The reserve ratio is referred to as ‘r’ in this example.

If the reserve ratio is large, the multiplier will be smaller as a result of the calculation. If that’s the case, banks will have to retain a larger share of their deposits in reserve. As a result, the bank will have less money to lend. In contrast, a greater multiplier is associated with a smaller reserve ratio.

Amount Multiplier’s Importance

Multiplying changes in reserve needs is a main application of the multiplier. Government and economists keep an eye on the multiplier because it helps them create monetary policies that are more efficient. As an example, if the government intends to strengthen the economy, it will look to the multiplier to estimate how much money is needed to be injected into the market.

Allowing firms to easily access cash is one way the Federal Reserve can choose to increase the money supply. The Fed’s reserve ratio would be lowered in this instance, enabling banks to provide more credit. To that end, the Federal Reserve would have to boost its reserve requirement if it wants to curtail the issuance of new currency.


An example will assist illustrate the multiplier principle.

Bank A has $10 million in total deposits, and the Federal Reserve has a reserve ratio of 10%. As a result, the bank would be required to have $1 million in cash on hand. With the bank’s reserve, it would be able to satisfy consumer withdrawals. As a result, they are able to lend the remaining deposit. The amount of money available in an economy would rise from $10 million to $19 million if loans were given out.

The $9 million in loans will aid in the creation of more money in the economy.. This is because the borrowers will utilise the money to purchase cars, homes, machines, and other goods and services in the economy. Vendors will likely return all or a portion of that money to the bank now (let’s assume the seller of the automobile did this). The multiplier cycle would be re-started in this manner. A portion of the deposits will be held in escrow by the banks, with the remainder being disbursed as loans.

Let’s look at an example now that we’ve learned about the multiplier notion (or impact).

Let’s say the Fed determines that an extra $10 million in money supply is needed to help an economy recover from a recession. At this time, a 70 percent reserve is required.

In this situation, the multiplier is 1.42 (1/0.70). Using this formula, the Fed will need to inject around $7 million to maintain the overall supply of $10 million: $10 million divided by 1.42. $7 million will become $10 million as a result of the multiplier effect.

As an example, if the Federal Reserve decreases the reserve ratio to 10%, the multiplier will be 10% (1/10 percent). In order to maintain a $10 million money supply, the Fed only needs to invest $1 million.

Effects of Money Multiplier Variables

If everyone deposits all of their earnings into banks, the multiplier effect will be completely realised. Such an assumption, however, does not hold up in reality.

The multiplier is affected by a wide range of variables in the actual world. Mr. A, for example, owns a department store and employs a staff. He saves a portion of his revenues and spends the rest to purchase raw materials for his shop. Probably, he will have to pay a tax on the purchase. This tax won’t be saved, or rather, it won’t be multiplied, since it won’t be collected. As a result, the multiplier is strongly influenced by tax rates.

In this scenario, Mr. A purchases a product that was created in a foreign country with part of the money he has saved. In this situation, the money spent on the purchase will leave the country and the economy. The multiplier impact would be reduced once more as a result of this.

It is also influenced by the habit of some individuals to hold a portion of their income in cash. Instead of putting money in the bank, they spend it right away.

Additionally, certain banks may retain greater reserves than is mandated by the Federal Reserve. The multiplier effect would be impacted by this as well. When conditions go tough, a bank may keep additional cash on hand as a safety net.

Here are the final remarks

In addition to being a helpful notion, the money multiplier is also an important economic instrument. It aids in the government’s ability to regulate the economy’s money supply. It is also used by governments and central banks for the development of successful fiscal and monetary policies.

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