In simple terms
Economics is the social science that studies how individuals, businesses, and societies choose to use scarce resources, and what happens as a result of those choices. [1] It starts from a simple observation: resources, including time and money, are limited, while people’s wants are effectively unlimited, so choices always involve trade-offs.
How it works
Economists generally divide the field into two broad halves. Microeconomics studies the decisions of individual households and firms: how a shopper chooses between two products, or how a company decides how much to produce and at what price. Macroeconomics studies economies as a whole, tracking measures like inflation, unemployment, and overall economic growth, and asking how government policy affects them. [1]
Because real economies are too complex to observe and test directly in every detail, economists build simplified models that isolate a few key variables at a time. These models can predict behavior usefully under the conditions they were built for, but they are approximations, and can break down when real-world conditions depart sharply from a model’s assumptions. [1]
Why it matters
Economic reasoning underlies decisions far beyond finance: public health policy, environmental regulation, and education funding are all shaped by trade-off analysis that is fundamentally economic in nature. [2] The Scottish philosopher Adam Smith’s 1776 work “The Wealth of Nations” is widely regarded as a foundational text that helped establish economics as a distinct field of study. [2]
Where you’ll see it
- Central bank decisions about interest rates
- Government budgets and tax policy debates
- Business strategy and pricing decisions
- Everyday personal finance and household budgeting
Example
A central bank raising interest rates to slow inflation is applying macroeconomic reasoning about how the cost of borrowing affects spending and prices across an entire economy.
Often confused with
Finance focuses specifically on how individuals, companies, and institutions manage money, investments, and risk; economics is the broader science of resource allocation and decision-making that finance, as a field, draws its tools from.
Key facts
- Economics is built on the basic problem of scarcity: resources are limited, but wants are not, so choices involve trade-offs.1
- Microeconomics studies the decisions of individual households and firms, while macroeconomics studies economies as a whole, including inflation, unemployment, and growth.1
- Adam Smith's 1776 book The Wealth of Nations is widely regarded as a foundational text of modern economics.2
- Economists use models to simplify complex real-world behavior, which means models are always approximations that can fail under conditions they were not designed to capture.1
In the news
Quick checkWhat basic problem does essentially all of economics come back to?Show answer
Scarcity, the fact that resources, time, and money are limited while wants are not, which forces individuals and societies to make trade-offs.
Sources
- Khan Academy. Economics Overview. Undated (accessed 1 November 2026)
- Encyclopaedia Britannica. Economics. Undated (accessed 1 November 2026)
Editorially reviewed by Last reviewed November 1, 2026Researched and drafted with AI assistanceReport an issue