Import Quota - Import Quotas Vs Tariffs

Import Quotas Vs Tariffs

Both tariffs and import quotas reduce quantity of imports, raise domestic price of good, decrease welfare of domestic consumers, increase welfare of domestic producers, and cause deadweight loss. However, a quota can potentially cause an even larger deadweight loss, depending on the mechanism used to allocate the import licenses. The difference between these tariff and import quota is that tariff raises revenue for the government, whereas import quota generates surplus for firms that get the license to import.

For a firm that gets a license to import, profit per unit equals domestic price (at which imported good is sold) minus world price (at which good is bought) (minus any other costs). Total profit equals profit per unit times quantity sold.

Government may charge fees for import license. If the government sets the import license fee equal to difference between domestic price and world price, the import quota works exactly like a tariff. The entire profit of the firm with an import license is paid to the government. Thus government revenue is the same under such an import quota and a tariff. Also, consumer surplus and producer surplus are the same under such an import quota and a tariff.

So why do countries use import quotas instead of always using a tariff?

When an import quota is used, it allows a country to be sure of the amount of the good imported from the foreign country. When there is a tariff, if the supply curve of the foreign country is unknown, the quantity of the good imported may not be predictable.

If world supply in the home country is upward-sloping and less elastic than domestic demand (as may be the case when the home country is the United States) then the incidence of the tariff may fall on producers, and the price paid domestically may not rise by much. Then if the tariff is supposed to make price of the good rise to allow domestic producers to sell at a higher price, the tariff may not have much of the desired effect. A quota may do more to raise price. However in competitive markets there is always some tariff that raises the price as high as the quota does.