Engel's Law

Engel's Law is an economic principle formulated by 19th-century economist Ernst Engel, stating that as a family's income increases, the proportion of income spent on food decreases, even if absolute spending on food rises.

Definition

Engel’s Law is an economic theory developed by the German statistician Ernst Engel. According to this law, as the income of a family increases, the percentage of income spent on food decreases even though the actual amount spent may rise. This observation highlights the inverse relationship between income and the proportion of income allocated to food, suggesting that food expenditure becomes a smaller fraction of the budget as income levels grow.


Examples

  1. Low-Income Household: A family earning $20,000 annually spends $5,000 on food, which accounts for 25% of their total income.
  2. Middle-Income Household: A family earning $50,000 annually spends $8,000 on food, representing 16% of their total income.
  3. High-Income Household: A family earning $100,000 annually spends $10,000 on food, which equals 10% of their total income.

Frequently Asked Questions (FAQs)

1. What does Engel’s Law state? Engel’s Law states that as a family’s income increases, the proportion of income spent on food decreases even though the actual amount spent on food might increase.

2. Who formulated Engel’s Law? Engel’s Law was formulated by 19th-century German statistician Ernst Engel.

3. Does Engel’s Law apply to all goods and services? No, Engel’s Law specifically addresses the relationship between income and food expenditure. It does not necessarily apply to other categories of goods and services.

4. How does Engel’s Law impact economic policy? Engel’s Law can impact economic policy by informing governments about consumption patterns among different income groups, which can be useful for developing taxation and subsidy policies.

5. Is Engel’s Law universally accepted? While widely recognized, Engel’s Law is not without exceptions. It generally holds true across socioeconomic contexts but can vary based on cultural and individual factors.


1. Income Elasticity of Demand: A measure of how much the quantity demanded of a good responds to a change in consumers’ income.

2. Normal Goods: Goods for which demand increases as consumer income rises.

3. Inferior Goods: Goods for which demand decreases as consumer income rises.

4. Budget Share: The fraction of total income allocated to a specific type of expenditure.

5. Consumption Function: A concept that describes the relationship between income and consumption expenditure.


Online References


Suggested Books for Further Studies

  1. “Principles of Economics” by N. Gregory Mankiw
  2. “Microeconomics” by Robert S. Pindyck and Daniel L. Rubinfeld
  3. “The Wealth of Nations” by Adam Smith
  4. “Development as Freedom” by Amartya Sen
  5. “The Economics of Food and Agricultural Markets” by Andrew Barkley and Paul W. Barkley

Fundamentals of Engel’s Law: Economics Basics Quiz

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