Bank Reserves

Bank reserves are a commercial bank's actual cash assets as well as deposits kept in the bank's account with the central bank.

Author: Manu Lakshmanan
Manu Lakshmanan
Manu Lakshmanan
Management Consulting | Strategy & Operations

Prior to accepting a position as the Director of Operations Strategy at DJO Global, Manu was a management consultant with McKinsey & Company in Houston. He served clients, including presenting directly to C-level executives, in digital, strategy, M&A, and operations projects.

Manu holds a PHD in Biomedical Engineering from Duke University and a BA in Physics from Cornell University.

Reviewed By: Rohan Arora
Rohan Arora
Rohan Arora
Investment Banking | Private Equity

Mr. Arora is an experienced private equity investment professional, with experience working across multiple markets. Rohan has a focus in particular on consumer and business services transactions and operational growth. Rohan has also worked at Evercore, where he also spent time in private equity advisory.

Rohan holds a BA (Hons., Scholar) in Economics and Management from Oxford University.

Last Updated:May 28, 2023

A bank reserve is a piece of the pie of money or bank deposits a bank must have to ensure stability. A bank reserve is often physically maintained by a commercial bank in a vault or a liquid account.

It represents a tiny part of the total cash deposits made to the bank. A bank reserve is a requirement of central bank rules that ensures a commercial bank has sufficient funds to settle customer transactions.

Reserve restrictions and a reserve maintenance averaging period might be a valuable buffer against money market disruptions.

For example, if a bank's reserves drop unexpectedly early in the maintenance period, the bank may temporarily allow them to fall below the needed level. Then, later on, it could keep an excess large enough to restore the requisite average level.

Reserve requirements can have a long-term impact on 

  • Bank lending 
  • Deposit rates 
  • The amount of credit and deposits available 

The main issues to be resolved are the number of reserves needed, whether they are reimbursed (i.e., receive interest), and if they can be averaged over a set number of days.

Key Takeaways

  • A bank reserve is a piece of a bank's deposits that it should have on hand to ensure its stability.
  • The Fractional Reserve Banking system is a system in which banks must hold a part of their customer's deposits while the remaining can be loaned out.
  • The law mandates Bank reserve standards to ensure financial corporations have sufficient liquidity to meet their liability.
  • Banks are required to maintain a specific percentage of their deposit as reserves. The central bank of the country fixes this percentage.
  • The bank must also keep a percentage of the deposits as gold themselves.
  • Legal Reserve Ratio = Cash Reserve Ratio + Statutory Liquidity Ratio 

Bank Reserves Throughout History

Before the advent of bank reserves, banks were notorious for keeping insufficient cash. As a result, customers at other banks would panic and withdraw their money if one bank closed down. 

The phenomenon caused a series of bank runs, resulting in many bank failures nationwide.

Despite many efforts of Alexander Hamilton and others, The United States did not have a nationalized banking system until 1913. However, by 1863, the government had a national currency and a procedure for chartering national banks. 

The Federal Reserve System was established to manage a country's money. 

Previously, banks were established and governed by states, with varying degrees of success. As a result, bank failures and "runs" were regular until a full-fledged financial panic in 1907 prompted calls for reform.

In 1977, Congress established price stability as a nationwide policy prescription and constituted the Federal Open Market Committee (FOMC) inside the Fed.

Additionally to supplying financial stability, the Federal Reserve System also serves as the USA's central bank. 

It supports the economy by implementing monetary policy, overseeing and regulating banks, and providing financial services to depository institutions.

Overall, the Federal Reserve System and the formation of bank reserves attempted:

  •  to restore stability to the banking sector
  •  Avert financial crises
  •  Offer a centralized framework for controlling the nation's money supply.

How Did Banks Work in The Era of the Gold Standard?

The Gold Standard is a monetary measure in which the value of a country's currency is directly linked to a fixed quantity of gold.

Under this system, central banks of different countries agreed to exchange each other's currency for a certain amount of gold upon demand, ensuring the currency's stability and facilitating international trade.

The Gold Standard originated when gold was used as a medium of exchange. Gradually, countries adopted this technique of issuing paper currency backed by gold reserves, allowing the expansion of the money supply without the need for additional gold. 

One of the primary reasons was its stiffness. In addition, since the paper currency was tied to the gold reserves, it was difficult for the government to increase liquidity and stimulate economic growth during the recession and depression.

The thing is, the gold standard had a big weakness. It was so stiff that it ended up causing a lot of problems, and because of this, it contributed greatly to the Depression of the 1930s.

Another thing that made the gold standard problematic was that countries had to hoard large amounts of gold to ensure their currency remained valuable. This led to the holding of a precious metal, which led to a limited supply of gold.

Due to increased trade deficit and inflationary pressure, the USA abandoned the dollar's gold convertibility in 1971; this marked the end of the gold standard era and the modern system known as fractional reserve banking.

Fractional Reserve Banking System

The Fractional Reserve Banking system is a framework in which banks are implied to hold as it were a division of their customers' stores in savings while the leftover portion can be lent out or contributed. 

Fractional Reserve Banking is a system in which banks keep only a portion of customer deposits as reserves while the rest is loaned or invested. This practice forms the basis of modern banking.  

The central bank or any other regulatory authority sets up this fraction. The bank can then use the remaining amount to extend loans or make investments generating income through interest and fees.

Fractional reserve banking has its advantages and disadvantages. One of the main advantages is that banks can create credit that can boost economic growth. 

Note

This system also risks the banking system's stability, including potential bank crackdowns and liquidity crises.

Since the beginning, central banks have played an important role in stabilizing the banking system to ensure it functions smoothly.

One major disadvantage of a fractional reserve banking system is the potential for bank runs or panics. If many customers demand their money simultaneously, the bank may need more reserves to meet the demands leading to a bank run.

Requirements for Bank Reserves

Bank reserve standards are enforced by law and policy to determine that large financial institutions have sufficient liquidity to meet withdrawals and obligations and withstand the effects of unpredictable market circumstances.

The reserve ratio can be used to measure cash reserves accurately, usually set up as a fixed percentage of a bank's deposits.

For example, if the reserve requirement is 20%, the bank has to keep 20 cents out of every dollar we deposit, and they can use the rest to give loans or invest.

In rare situations, the financial institution may not satisfy the reserve requirements independently. In such cases, they can borrow at overnight interest rates from other financial institutions with additional reserves. 

Having these reserve standards is important because it helps keep the bank and its customers' money safe. But, just like how you keep some money saved in emergencies, banks need to have some money saved up, too, in case anything unexpected happens.

Plus, having money in reserves helps banks make more loans and investments, benefiting the economy.

Note

The overnight interest rate is the rate at which financial institutions lend overnight. 

What Is the Function of a Bank Reserve?

Banks maintain reserves to ensure that scenarios such as not having adequate funds on hand to meet your request never occur—they may also be used to assist in boosting the economy. 

Commercial banks that do have accounts with the central bank are typically required to make a certain amount in this amount as a bank reserve. In addition, banks must keep a reserve fund to protect against significant risks, such as a shortage of finances to meet client requests. 

The central bank issues the minimum amount that the banks should have in reserves, known as the minimum reserve ratio, to ensure that banks can meet their short-term liabilities.

Banks often receive higher income when they lend their money to the public rather than storing it using a Federal Reserve bank, which is why bank reserves are crucial. Banks may be enticed to lend more money if they do not have them.

In simple terms, bank reserves are like savings accounts for banks. The higher their amount, the higher they can lend out to people.

There are two types of reserves that the banks have to maintain:

1. Cash Reserve Ratio 

Banks have to maintain a certain percentage of their deposit as a reserve. The central bank of the country fixes that percentage. The commercial bank must deposit these cash reserves to the central bank. Therefore, CRR means that a certain percentage of deposits must be sent to the central bank.

2. Statutory Liquidity Ratio 

A certain percentage of the deposits have to be kept by the bank in the form of cash or gold with themselves. Like CRR, the percentage of SLR is also specified by the Central Bank.

A combination of SLR and CRR is known as LRR, which is Legal Reserve Ratio.

So, 

Legal Reserve Ratio = Cash Reserve Ratio + Statutory Liquidity Ratio 

LRR can be defined as the mandatory percentage of the deposits that have to be maintained by the bank in the form of reserves. LRR is important because it affects how much cash a bank has to work with, which can affect its financial stability.

Bank Reserves: Particular Considerations

The statutory bank reserve is determined using a calculation specified under Federal Reserve Board rules. 

The equation is based on the overall amount deposited in the net transaction accounts of the bank. Demand deposits, automatic transfer accounts, and share draft accounts are all included in this number.  

Net transactions are computed as the total amount in transaction accounts, fewer payments owed to other banks, and cash that is being collected. 

A central bank can also employ the necessary reserve ratio for monetary policy. A central bank can alter the money available for borrowing by using this ratio.

In addition to the Federal Reserve's reserve requirements, banks must adhere to the Basel Accords' liquidity requirements. The Basel Accords are a set of banking regulations designed by experts from the world's largest top economic hubs.

After the collapse of the United States investment banking company Lehman Brothers in 2008, the Basel Accords were bolstered in an accord known as Basel III, which compelled banks to maintain optimal liquidity coverage. 

The purpose of the LCR is to guarantee that banks have adequate capital on hand to weather any short-term capital problems.

Note

Even if the Federal Reserve says banks can keep less money in reserves, they still have to follow other rules called the Liquidity Coverage Ratio (LCR). 

These rules ensure banks have enough cash to pay their bills and debts. It's like a backup plan to make sure they can handle their financial responsibilities when needed.

Bank Liquidity Standards under Federal Reserve and Basel Accord

Historically, reserves have fluctuated between zero and 10%. It has been zero since March 26, 2020. How much money should the bank hold?

Bank reserves are a bank's assets determined by multiplying total deposits by a reserve ratio. 

Some of the bank reserves are kept in bank vaults. Reserves can also be held in bank accounts with 12 regional Federal Reserve Banks. In addition, some smaller banks keep part of their reserves in larger banks and withdraw them as needed.

Banks use reserve requirements to regulate the money supply and balance the economy. As bank reserves rise, less money can be borrowed, slowing the economy. Conversely, banks with low reserves can lend more, stimulating the economy.

Bank reserves also help prevent bank runs, when many customers withdraw their deposits simultaneously, potentially causing the bank to become insolvent.

In addition, by adjusting the reserve requirement, the central bank can control the money supply, influencing interest rates and inflation. 

In summary, bank reserves are important for maintaining stability, regulating the money supply, and preventing financial crises. These ensure that banks have enough money to meet their liabilities and that it contributes effectively to the economy. 

Bank Reserves - Summary

By today's standards, the ancient banking system in the United States before centralized supervision seemed a little Wild West. Each state had the authority to establish banks, and minor banks came up and went out of business regularly. On the bank, "runs" were prevalent.

The Federal Reserve System, founded in 1913, requires banks to hold a specific reserve amount to meet demand. 

Based on the fractional reserve banking system, if each client of the bank seeks their funds at a single time, the bank is unlikely to have sufficient funds to pay everyone back, leading to a run on the bank. 

The advantages of bank reserves far outweigh the disadvantages, which is why it is used worldwide.

Since March 2020, the reserve minimum has been zero, signifying that the Federal Reserve is satisfied with the amount of cash the nation's banks kept voluntarily in conjunction with the Basel Accords' 30-day liquidity coverage ratio.

Bank reserves are still vital to the growth of every nation, for everything is interconnected with economics and finance. Without it all, every shamble, famine, and war will become rampant again. 

As naysayers would say, that is not it, but in reality, structures and systems like these will eventually lead to the common good of all.

Researched and Authored by Garv MittalLinkedIn

Reviewed and Edited by Basil KhalidiLinkedIn

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