Module 5: Money, Banking, and Monetary Policy Module 5: Money, Banking, and Monetary Policy 5.1 The Nature and Functions of Money Money is a critical component of a modern economy, but its nature is often misunderstood.
In early societies, as settlers expanded westward, they faced the dangers of carrying valuable possessions like gold.
To protect their wealth, they began depositing their gold with blacksmiths, who would issue receipts.
Over time, these receipts themselves began to be used as payment for goods and services, evolving from a simple store of value into a complex medium of exchange that facilitates all economic activity.
Money is anything that is generally acceptable to sellers in exchange for goods and services.
The Three Functions of Money For an asset to be considered money, it must perform three essential functions: A Medium of Exchange: Money eliminates the inefficiencies of a barter system (trading goods for goods).
It provides a universally accepted item that can be used to buy and sell, making transactions much more efficient.
A Unit of Account: Money provides a common measure of relative value.
It allows us to compare the worth of a diamond ring to that of a pair of shoes without having to express one in terms of the other.
It acts as a yardstick for value.
A Store of Value: Money allows you to transfer purchasing power from the present to the future.
It holds its value over time, so you can save it today and spend it tomorrow without it expiring or spoiling.
The Money Supply The money supply is the total quantity of money available to the public.
Economists measure it in several ways, based on liquidity (how easily an asset can be converted into cash).
M1: The most liquid measure.
It includes all currency (coins and paper money) in public hands, all checkable deposits, and travelers’ checks.
M2: A broader measure that includes all of M1 plus less liquid assets like savings deposits, certificates of deposit (under $100,000), and money market mutual funds.
M3: An even broader measure that includes all of M2 plus large-time deposits (over $100,000).
Unlike in the past, when the U.S. dollar was backed by gold, today’s money supply is “fiat money,” meaning it is not backed by a physical commodity.
Its value is upheld by three key factors: Acceptability: We accept it as money because we are confident others will accept it from us.