What is Economics?

Economics is the social science that studies how limited resources are produced, distributed and used to meet human needs and wants, and why individuals, businesses, governments and societies make particular choices. It is not limited to money, stock markets or companies. The use of time, the price of a product, finding work, taxation, public services, foreign trade and the protection of natural resources are also parts of economic decision-making. Economic analysis seeks to understand the benefits and costs of choices, who they affect and how their consequences change over time.

Core economic concepts, markets and the formation of economic decisions

1. What is economics? Economics studies which goods and services are produced when people and institutions face limited means, how they are produced and who consumes them. Household spending and saving, business investment and employment, government taxation and expenditure, and trade among countries are different parts of the same economic system. Economics is not a tool that predicts the future with certainty; it is a discipline that uses evidence and models to understand behaviour, institutions and outcomes. 2. Scarcity, needs and choice Scarcity means that time, income, labour, natural resources or production capacity are not sufficient to satisfy every want at once. It does not necessarily mean that a good is entirely unavailable; it means resources have alternative uses. When a municipality allocates its budget to transport, fewer resources may remain for another service. Income spent today cannot be saved at the same time. Economic choice requires priorities among alternatives. 3. What is opportunity cost? The opportunity cost of a choice is the most valuable alternative forgone because of it. The cost of university education is not only fees or books; potential earnings from time devoted to study rather than work may also matter. A service that appears free may be financed through time, data or taxes. Opportunity cost does not show that a decision is necessarily wrong; it reminds us that the true cost is broader than the visible monetary amount. 4. Microeconomics and macroeconomics Microeconomics studies decisions by consumers, workers, businesses and particular markets: How is the price of a product formed, how many people does a firm employ, and how does a consumer respond to a price change? Macroeconomics considers the economy as a whole: How do total output, growth, unemployment, inflation, interest rates, the public budget and the external balance change? The two are connected. Millions of individual choices create macroeconomic outcomes, while general conditions such as interest rates and inflation affect individual decisions. 5. Positive and normative economics Positive economics asks questions that can be tested with observation and evidence, such as, “How does a tax increase affect consumption?” Normative economics includes value-based questions such as, “How fair should the tax system be?” Data can show likely consequences of a policy, but cannot by itself decide how society should balance justice, freedom and equality. Sound debate clearly separates factual claims from value choices. 6. Economic actors and the circular flow Households supply labour, capital and other resources, earn income and buy goods and services. Businesses use inputs to produce, paying wages and other costs. Government collects taxes, provides public services, makes transfers and establishes rules. Financial institutions help direct savings towards investment. The rest of the world participates through exports, imports and capital flows. One actor's spending is often another actor's income. 7. How do supply, demand and price form? Demand shows the quantity consumers are willing and able to purchase at different prices; supply shows the quantity producers are willing to sell at different prices. Other things equal, a higher price commonly reduces quantity demanded and increases quantity supplied. The interaction of buyer and seller decisions produces a market price and quantity. When income, expectations, input costs, technology, tax, population or preferences change, supply or demand shifts and a new equilibrium may emerge. 8. Competition, monopoly and market power In markets with many buyers and sellers, adequate information and limited barriers to entry, competition can affect prices and innovation. A monopoly has a single provider with a strong position; an oligopoly has a small number of large firms. Market power is the ability of a firm to influence price, quality or terms significantly away from competitive levels. Competition law seeks to control cartels, abuse of dominance and mergers that reduce competition. A large firm is not automatically a monopoly; market structure and conduct must be assessed. 9. Market failures and the role of government Markets do not always produce the best social outcome. Externalities such as air pollution impose costs on people who are not parties to the transaction. With public goods such as street lighting, excluding non-payers may be difficult. Information asymmetry means buyer and seller do not possess the same information. Monopoly power may distort price and output. Taxes, regulation, public provision, property rights, competition policy or emissions pricing can be used in response, but government intervention may also have costs and design failures.

Macroeconomics, money, public policy, welfare and interpreting economic data

10. Gross domestic product and economic growth Gross domestic product (GDP) measures the market value of final goods and services produced within a country during a period. Nominal GDP uses current prices; real GDP adjusts for price changes. Real GDP per person gives an indication of average material living standards, but does not fully show income distribution, unpaid household work, environmental loss, health or life satisfaction. Economic growth is an increase in productive capacity; it is not identical to inclusive and sustainable welfare. 11. Inflation, deflation and the cost of living Inflation is a sustained rise in the general price level; an increase in the price of one product alone is not inflation. A consumer price index measures the average change in a defined basket of goods and services. Because household spending patterns differ, experienced inflation may differ from the official average. Demand exceeding productive capacity, energy and input costs, exchange-rate movements, expectations, and monetary and fiscal conditions can influence inflation. Deflation is a fall in the general price level; it can increase the burden of debt and encourage delayed spending. 12. Unemployment and the labour market An unemployed person is not working, is available for work and is actively seeking it; the unemployment count does not include everyone of working age. The labour-force participation rate measures workers and jobseekers relative to the relevant population. Temporary movement between jobs may be frictional unemployment, mismatch between skills and jobs structural unemployment, and job loss caused by a downturn cyclical unemployment. Underemployment includes working fewer hours than desired or below one's skill level. Wages, productivity, education, care responsibilities, discrimination and regional opportunities affect outcomes. 13. Money, banks, interest and the central bank Money serves as a medium of exchange, unit of account and store of value. Banks accept deposits, provide payment services and extend credit; they must manage risks and meet their obligations. Interest is the cost of using money over time and one of the prices that influences saving and investment. A central bank may use policy interest rates, liquidity and other tools in pursuit of price stability and its other assigned objectives. Policy decisions pass to credit, exchange rates, demand and expectations with delays; one interest-rate decision does not change every price immediately. 14. Fiscal policy, tax and the public budget Fiscal policy comprises government decisions on spending, taxation and borrowing. During a downturn, higher spending or lower taxes may support demand; during overheating, measures in the opposite direction may be considered. Education, health and infrastructure spending can affect long-term productivity. A budget deficit occurs when expenditure exceeds revenue; a surplus is the reverse. Public debt is the accumulation of past deficits and other operations. Sustainability depends not only on the amount but also on growth, interest rates, maturity, currency and institutional confidence. 15. Foreign trade, exchange rates and the balance of payments Countries trade because of comparative advantage, scale and gains from variety. Exports are sales abroad and imports are purchases from abroad. Trade can give consumers choice and businesses markets, but gains and losses may not be distributed equally among sectors and workers. An exchange rate is the price of one currency in another and is influenced by inflation, interest rates, expectations, risk and capital flows. The current account covers flows of goods, services and income; it should not be labelled simply good or bad without considering financing and economic structure. 16. Income distribution, poverty and welfare Economics examines not only total production but also how income and opportunities are distributed. Inequality is influenced by wages, wealth, education, tax and transfer systems, labour markets and family structure. Absolute poverty concerns inability to meet basic needs, while relative poverty compares people with the broader living standard of society. The Gini coefficient is one measure of income distribution; it does not explain all living conditions by itself. Social mobility matters because it indicates whether a person can progress independently of family background. 17. Economic fluctuations, crises and economic systems Economies may experience expansion, slowdown, contraction and recovery. Demand shocks, financial bubbles, banking problems, pandemics, war, natural disasters, energy prices or policy errors can cause fluctuations. A recession is associated with a broad decline in output; not every short slowdown is the same. A market economy relies largely on prices and private enterprise, while a planned economy relies on central decisions. Most countries today use mixed systems that combine private property, markets, public services, regulation and social protection in different proportions. 18. How should economic information be read? Do not draw a firm conclusion about the economy from one indicator. For inflation distinguish monthly and annual rates; for growth, real and nominal values; for unemployment, the participation rate; and for wages, purchasing power. Check the period, source, revisions, seasonal effects and per-person figures. Correlation is not causation: a third factor may drive two variables that move together. Read forecasts as scenarios based on assumptions, not certainties. Personal financial decisions and general economic analysis are not the same; this article does not provide investment advice. Frequently asked questions “Are economics and finance the same?” No. Finance is a narrower field focused on money, investment and risk management; economics ranges more broadly from production to public policy. “Is every price rise inflation?” No. Inflation is a general and sustained increase in prices, not a rise in one product. “Does higher GDP make everyone richer?” No. Distribution, population, inflation and quality of life must also be examined. “Is government outside the economy?” No. It is an economic actor through taxation, spending, regulation and public services. “Why can economists disagree?” Assumptions, methods, data, time horizons and value choices may differ. Source basis: IMF Finance & Development — Back to Basics; OECD work on the economic outlook and inclusive growth. Sources checked on 10 October 2026.