The Basics
- Simple definition: The ratio of change in national income to the change in government spending that caused it.
- Core idea: One rupee of government spending can generate more than one rupee of economic output.
- Think of it as: The ripple effect – government spending creates income, which creates more spending, which creates more income.
What It Actually Means
When the government spends money (on infrastructure, salaries, transfers), that money becomes income for someone. They spend part of it, creating income for others, who spend part, and so on. The multiplier measures how many rupees of total economic activity result from each initial rupee spent. If the multiplier is 1.5, Rs. 100 billion in spending eventually generates Rs. 150 billion in national income. The size depends on how much of each rupee is spent domestically (marginal propensity to consume) versus saved or spent on imports.
Example
If Pakistan spends Rs. 100 billion on new roads, workers and suppliers earn income. They spend 80% (Rs. 80 billion) on food, clothes, etc. Those sellers earn income and spend 80% (Rs. 64 billion), and so on. Total impact exceeds the initial Rs. 100 billion.
Why It Matters (2026)
Governments debating stimulus need to know multipliers. Spending with high multipliers (infrastructure, transfers to the poor who spend) gives more bang for the buck. Low multipliers (tax cuts for the rich who save) stimulate less. Multipliers vary with economic conditions – higher in recessions when resources are idle.
See also
Fiscal Policy • Fiscal Stimulus • Marginal Propensity to Consume • Crowding Out • Automatic Stabilizers
Read more about this with MASEconomics: