Class 11 Micro Economics Notes · CBSE
Price Ceiling
Price Ceiling — understanding maximum price controls below equilibrium and the shortage and black marketing they create. CBSE Class 11 Microeconomics notes with the ceiling graph.
Last updated: 16 Sep 2026
Notes
Meaning and Need
Government plays an important role in controlling the prices of essential commodities (wheat, sugar, kerosene etc.) when the equilibrium price determined by the free play of demand and supply is too high for the poor people.
Step 1
Suppose the equilibrium price of OP is very high and many poor people are unable to afford the product at this price.
Step 2
As a result, government interferes and fixes the maximum price (known as Price Ceiling) at OP₁, which is less than the equilibrium price of OP.
The Price Ceiling Diagram ()
Price Ceiling
At this controlled price (OP₁), the producers are willing to supply only P₁A (or OQ₁), while consumers demand P₁B (or OQ₂).
The effect of the ceiling is that a shortage, equal to AB (Q₁Q₂), is created, which may further lead to Black Marketing. ⭐
Consequences of Price Ceiling
- Black Market is any market in which the commodities are sold at a price higher than the maximum price fixed by the government.
- Black marketing may be termed as a direct consequence or implication of price ceiling as it implies a situation where the commodity under the government’s control policy is illegally sold at a price higher than the one fixed by the government.
- It may primarily arise due to the presence of consumers who may be willing to pay a higher price for the commodity than to go without it.
- At times, supply of the product is intentionally reduced by the producers in the legal market in order to make more profit out of black marketing.
- To meet the excess demand, the Government may also enforce the ‘Rationing System’.
- Rationing is a technique adopted by the government to sell a minimum quota of essential commodities at a price less than the equilibrium price to supply goods to the poor community at a cheaper price. Under this system, consumers are given ration cards/coupons to buy commodities at a cheaper price from ration shops.
- Difficulty in obtaining goods from ration shops: consumers have to stand in long queues to buy goods from ration shops. Sometimes, commodities are not available in the ration shops or goods are of inferior quality.
- Government may also allow a system of having two prices for the same product at the same time to avoid the situation of black marketing. Under this system, a fixed quantity of the product is supplied to consumers at a lower price through fair price shops and at the same time, the product is also made available in the open market at the market price determined by market forces of demand and supply.
Key Takeaways
Key Takeaways
- A price ceiling is a legally fixed maximum price set below the equilibrium price on essential commodities. ⭐
- Its purpose is consumer protection — the free-market equilibrium price is too high for the poor to afford. ⭐
- At the ceiling price, quantity demanded exceeds quantity supplied — a shortage equal to AB (Q₁Q₂) is created. ⭐
- The shortage leads to black marketing, and the government may respond with rationing or a dual price policy. ⭐
- Black market: commodities sold illegally at a price higher than the government-fixed maximum price. ⭐
- Rationing: selling a minimum quota of essential commodities below the equilibrium price via ration cards; dual price: lower price at fair price shops plus open-market price. ⭐