
Monetary Policy
Monetary Policy refers to the actions undertaken by a central bank, such as the Federal Reserve (Fed) in the United States, to control the money supply and achieve macroeconomic goals such as controlling inflation, stabilizing currency exchange rates, and promoting economic growth.
Understanding Monetary Policy: Expansionary and Contractionary Measures

Expansionary Monetary Policy
Expansionary monetary policy is used to stimulate the economy by increasing the money supply or lowering interest rates. This encourages borrowing and spending, which can lead to increased investment and consumer spending, ultimately boosting economic activity. Expansionary monetary policy is typically used during economic downturns or recessions to stimulate growth.
Contractionary Monetary Policy
Contractionary monetary policy, on the other hand, is used to slow down an overheating economy and control inflation. It involves reducing the money supply or raising interest rates, which can discourage borrowing and spending, leading to lower inflation rates and more stable economic growth. Contractionary monetary policy is employed when the economy is overheating to very high inflation.

How does the Central Bank Change the Money Supply?
There are three main ways that the Central Bank changes the money supply. The main methods are fractional reserve banking, changing the discount rate, and open-market-operations. Click on each of the three methods to learn more

Fractional Reserve Banking
Reserves of the Central Bank
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Fractional Reserve Banking
When individuals deposit money into a bank, the bank is required to hold a fraction of these deposits in reserve, typically set by the central bank, such as the Federal Reserve in the United States. The remaining portion of the deposit is available for the bank to lend out to borrowers.
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Increasing the Money Supply
When the central bank decreases the reserve requirement, banks are required to hold less money in reserve and can lend out more money. This increase in lending can lead to a corresponding increase in the money supply, as more money is available for individuals and businesses to borrow and spend. The reserve requirement historically has been 10 percent.
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Impact on Money Supply
The fraction of deposits that banks are required to hold in reserve, known as the reserve requirement, plays a crucial role in determining the money supply in the economy. By adjusting this requirement, central banks can influence the amount of money that banks can lend out, thus affecting the overall money supply.
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Federal Reserves Role
The Federal Reserve, as the central bank of the United States, has the authority to set the reserve requirement for all commercial banks. Historically, the Fed has used changes in the reserve requirement as a tool to influence the money supply and achieve macroeconomic objectives such as controlling inflation and promoting economic growth.
Changing the Discount Rate


The rate that the central bank charges to banks is called the discount rate or "fed rate" in America

Role of the Federal Reserve
The Federal Reserve (the Fed) serves as the central bank of the United States, responsible for regulating and supervising the nation's monetary policy. Its primary objectives include maintaining stable prices and promoting maximum sustainable employment. Through its actions, the Fed aims to support long-term economic growth while ensuring the stability of the financial system.
The Discount Rate
One of the tools the Fed uses to influence economic conditions is the discount rate. This rate is the interest rate at which commercial banks can borrow funds directly from the Federal Reserve. By adjusting the discount rate, the Fed can control the cost of borrowing for banks, which in turn affects the money supply and economic activity.
Impact of Changing the Discount Rate
Effects on the Economy
When the Fed increases the discount rate, borrowing becomes more expensive for commercial banks. As a result, banks may reduce their borrowing, leading to a decrease in the money supply. Conversely, when the Fed decreases the discount rate, borrowing becomes cheaper, encouraging banks to borrow more, which can increase the money supply and stimulate economic activity.
Changes in the money supply can have significant effects on the economy. By adjusting the discount rate, the Fed can influence interest rates, investment levels, and overall economic growth. These actions can help the Fed achieve its dual mandate of stable prices and maximum sustainable employment by adjusting the money supply to support economic stability and growth.

Open Market Operations
Buying and selling of fixed securities by the Central Bank
Open-market operations refer to the buying or selling of short-term government bonds by the Federal Reserve. When the Fed buys these bonds, banks tend to hold onto them as they are considered less risky than stocks and also earn interest. This action increases the banks' liquidity, giving them more money to lend out, which in turn increases the money supply in the economy. Conversely, when the Fed sells bonds to banks, it reduces the banks' liquidity, meaning they have less money to loan out, thereby decreasing the money supply.
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These operations are a key tool used by the Federal Reserve to implement monetary policy. By adjusting the amount of money in the banking system, the Fed can influence interest rates and ultimately control economic activity. Open-market operations are typically used when the Fed wants to either increase or decrease the money supply to achieve its macroeconomic objectives, such as controlling inflation or stimulating economic growth.