Subsidy and Market Outcomes
Microeconomics
A diagram showing the effect of a government subsidy on a market, resulting in a downward shift of the supply curve, lower price for consumers, and increased quantity supplied.
Curves and Elements
demand
Demand Curve: Downward-sloping, representing the inverse relationship between price and quantity demanded.
original supply
Supply Curve: Upward-sloping, reflecting the direct relationship between price and quantity supplied before subsidy.
new supply
Supply + Subsidy: A downward shift of the supply curve due to a per-unit subsidy, reducing producers' costs.
price change
Price Effect: The market price falls from Pe to P+s, making the good more affordable for consumers.
quantity change
Quantity Effect: Output increases from Qe to Q+s due to the incentive created by the subsidy.
A subsidy is a payment made by the government to producers to reduce their costs of production and encourage increased output.
The subsidy causes the supply curve to shift downward (or to the right), from 'Supply' to 'Supply + Subsidy'.
At the new equilibrium, the price paid by consumers falls from Pe to P+s, and quantity increases from Qe to Q+s.
The vertical distance between the original and new supply curves represents the value of the subsidy per unit.
While subsidies can increase affordability and support industries (e.g., agriculture, green energy), they have opportunity costs and can lead to overproduction or inefficiencies if poorly targeted.
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