beginner lesson • 10 min
Functions of Money
Learning objectives
By the end of this lesson, you should be able to name money’s three core functions, explain what each function means, and describe how the functions support one another.
Evidence & citations6 sources
Money conventionally performs three core functions: medium of exchange, unit of account, and store of value. (supported)
The three functions are distinct but mutually connected: confidence in money’s value supports its acceptance for payments and its usefulness for pricing and contracts. (supported)
Money in simple terms
Think of money as a tool with three important jobs. It helps people pay for things, gives everyone a shared way to describe prices, and lets people keep purchasing power for later. These jobs work together: people are more likely to accept money when they have confidence that it will remain useful for payments, pricing, and contracts.
Evidence & citations8 sources
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
The three functions are distinct but mutually connected: confidence in money’s value supports its acceptance for payments and its usefulness for pricing and contracts. (supported)
The three functions at a glance
Money conventionally performs three core functions: medium of exchange, unit of account, and store of value. As a medium of exchange, it is used to make payments for goods and services. As a unit of account, it provides a common measure for stating and comparing prices. As a store of value, it can be held for later use while preserving some purchasing power over time.
Evidence & citations7 sources
Money conventionally performs three core functions: medium of exchange, unit of account, and store of value. (supported)
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
Understanding each function
Medium of exchange: Money is used to make payments when goods or services are exchanged. Unit of account: Money supplies a shared measurement system, so prices can be stated and compared. Store of value: Money can be kept and used later, preserving some purchasing power over time. The functions are different, but they are mutually connected. Confidence in money’s value supports its acceptance for payments and its usefulness for pricing and contracts.
Evidence & citations8 sources
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
The three functions are distinct but mutually connected: confidence in money’s value supports its acceptance for payments and its usefulness for pricing and contracts. (supported)
How the functions work together
A payment works more smoothly when the parties recognize money as a medium of exchange. Prices are easier to state and compare when they use the same unit of account. Saving for later depends on money functioning as a store of value. Together, these roles depend on confidence that money will be accepted and remain useful. That confidence also helps make prices meaningful and contracts workable.
Evidence & citations8 sources
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
The three functions are distinct but mutually connected: confidence in money’s value supports its acceptance for payments and its usefulness for pricing and contracts. (supported)
A simple everyday example
Imagine a person buying a service. Money serves as a medium of exchange when the person uses it to pay. The price stated in money shows its unit-of-account function, allowing the price to be understood and compared with other prices. If the person keeps some money to pay for something later, money is serving as a store of value. The example shows how the three functions can appear in connected activities.
Evidence & citations5 sources
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
Key terms
Medium of exchange: A role of money in making payments for goods and services. Unit of account: A role of money as a common measure for stating and comparing prices. Store of value: A role of money in being held for later use while preserving some purchasing power over time.
Evidence & citations5 sources
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
Common misconceptions
Misconception 1: Money has only one job. Correction: Money conventionally has three core functions. Misconception 2: The functions are interchangeable names for the same thing. Correction: They are distinct roles—payment, pricing, and holding value—even though they are connected. Misconception 3: Being a store of value means purchasing power is guaranteed to remain unchanged. Correction: The verified definition says money preserves some purchasing power over time, not that it preserves all purchasing power.
Evidence & citations7 sources
Money conventionally performs three core functions: medium of exchange, unit of account, and store of value. (supported)
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
Summary
The three core functions of money are medium of exchange, unit of account, and store of value. Money enables payments, provides a common way to state and compare prices, and can be held for later use while preserving some purchasing power. These functions are distinct but mutually connected because confidence in money’s value supports its acceptance and usefulness.
Evidence & citations10 sources
Money conventionally performs three core functions: medium of exchange, unit of account, and store of value. (supported)
As a medium of exchange, money is used to make payments for goods and services. (supported)
As a unit of account, money provides a common measure in which prices can be stated and compared. (supported)
As a store of value, money can be held for later use while preserving some purchasing power over time. (supported)
The three functions are distinct but mutually connected: confidence in money’s value supports its acceptance for payments and its usefulness for pricing and contracts. (supported)
Knowledge check
Test what you just learned.
Complete this short assessment for Functions of Money. You will get explanations immediately after grading.
Reference library