Consider a small country that exports steel.Suppose that a 'protrade' government decides to subsidise the export of steel by paying a certain amount for each tonne sold abroad. How does this export subsidy affect the domestic price of steel, the quantity of steel produced,the quantity of steel consumed and the quantity of steel exported? How does it affect consumer surplus, producer surplus,government revenue and total surplus? (Hint:The analysis of an export subsidy is similar to the analysis of a tariff.)

1. Domestic price of steel: An export subsidy effectively lowers the cost of production for steel producers, allowing them to sell at a lower price. Therefore, the domestic price of steel decreases.

2. Quantity of steel produced: With the subsidy, it becomes more profitable for producers to produce steel, leading to an increase in the quantity of steel produced.

3. Quantity of steel consumed: As the domestic price of steel decreases, consumers can afford to buy more steel. Therefore, the quantity of steel consumed domestically increases.

4. Quantity of steel exported: The export subsidy makes it more profitable for producers to sell their steel abroad, leading to an increase in the quantity of steel exported.

5. Consumer surplus: Consumer surplus is the difference between what consumers are willing to pay and what they actually pay. As the price of steel decreases, consumer surplus increases because consumers are getting steel at a lower price.

6. Producer surplus: Producer surplus is the difference between what producers are willing to sell for and the price they actually receive. The subsidy increases the price received by producers, leading to an increase in producer surplus.

7. Government revenue: The government is paying the subsidy, so its revenue decreases by the amount of the subsidy.

8. Total surplus: Total surplus is the sum of consumer surplus, producer surplus, and government revenue. While consumer and producer surplus increase due to the subsidy, government revenue decreases. The net effect on total surplus depends on the relative magnitudes of these changes. If the sum of the increases in consumer and producer surplus is greater than the decrease in government revenue, total surplus will increase. If not, total surplus will decrease.

In summary, an export subsidy decreases the domestic price of steel, increases the quantity of steel produced, consumed, and exported, increases consumer and producer surplus, decreases government revenue, and has an ambiguous effect on total surplus.