tariff office





When a ship arrives in port a customs officer inspects the contents and charges a tax according to the tariff formula. Since the goods cannot be landed until the tax is paid, it is the easiest tax to collect, and the cost of collection is small. Traders seeking to evade tariffs are known as smugglers.


Tariffs may be of various kinds:

  • An ad valorem tariff is a set percentage of the value of the good that is being imported. Sometimes these are problematic as when the international price of a good falls, so does the tariff, and domestic industries become more vulnerable to competition. Conversely when the price of a good rises on the international market so does the tariff, but a country is often less interested in protection when the price is higher. They also face the problem of inappropriate transfer pricing where a company declares a value for goods being traded which differs from the market price, aimed at reducing overall taxes due.
  • A specific tariff is a tariff of a specific amount of money that does not vary with the price of the good. These tariffs may be harder to decide the amount at which to set them, and they may need to be updated due to changes in the market or inflation.
  • A "revenue tariff" is a set of rates designed primarily to raise money for the government. A tariff on coffee imports, for example (imposed by countries where coffee cannot be grown) raises a steady flow of revenue.
  • A "protective tariff" is intended to artificially inflate prices of imports and "protect" domestic industries from foreign competition (see also effective rate of protection). For example, a 50% tax on an imported machine raises the price from $100 to $150. Without a tariff, the local manufacturers could only charge $100 for the same machine; now they can charge $149 and make the sale.
  • A "prohibitive tariff" is one so high that no one imports any of that item.

The distinction between protective and revenue tariffs is: protective tariffs in addition to protecting local producers also raise revenue; revenue tariffs produce revenue but they also offer some protection to local businesses.




Economic analysis

Some economic theories hold that tariffs are a harmful interference with the individual freedom and the laws of the free market. They believe that it is unfair toward consumers and generally disadvantageous for a country to artificially maintain an inefficient industry, and that it is better to allow it to collapse and to allow a new, more efficient one to develop in its place. The opposition to all tariffs is part of the free trade principle; the World Trade Organization aims to reduce tariffs and to avoid countries discriminating between other countries when applying tariffs.

In the following graph we see the effect that an import tariff has on the domestic economy. In a closed economy without trade we would see equilibrium at the intersection of the demand and supply curves (point B), yielding prices of $70 and an output of Y*. In this case the consumer surplus would be equal to the area inside points A, B and K, while producer surplus is given as the area A, B and L. When incorporating free international trade into the model we introduce a new supply curve denoted as SW. This curve makes the assumption that the international supply of the good or service is perfectly elastic and that the world can produce at a near infinite quantity at the given price. Obviously, in real world conditions this is somewhat unrealistic, but making such assumptions is unlikely to have a material impact on the outcome of the model. In this case the international price of the good is $50 ($20 less than the domestic equilibrium price).

The model above is only completely accurate in the extreme case where none of the consumers belong to the producers group and the cost of the product is a fraction of their wages. If instead, we take the opposite extreme, and assume all consumers come from the producers group, and also assume their only purchasing power comes from the wages earned in production and the product costs their whole wage, then the graph looks radically different. Without tariffs, only those producers/consumers able to produce the product at the world price will have the money to purchase it at that price. The small FGL triangle will be matched by an equally small mirror image triangle of consumers still able to buy. With tariffs, a larger CDL triangle and its mirror will survive.

Note also, that with or without tariffs, there is no incentive to buy the imported goods over the domestic, as the price of each is the same. Only by altering available purchasing power through debt, selling off assets, or new wages from new forms of domestic production, will the imported goods be purchased. Or, of course, if its price were only a fraction of wages.

In the real world, as more imports replace domestic goods, they consume a larger fraction of available domestic wages, moving the graph towards this view of the model. If new forms of production are not found in time, the nation will go bankrupt, and internal political pressures will lead to debt default, extreme tariffs, or worse.

Moderate tariffs would slow down this process, allowing more time for new forms of production to be developed.

Political analysis

The tariff has been used as a political tool to establish an independent nation; for example, the United States Tariff Act of 1789, signed specifically on July 4th, was called the "Second Declaration of Independence" by newspapers because it was intended to be the economic means to achieve the political goal of a sovereign and independent United States.

In modern times, the political impact of tariffs has been seen in a positive and negative sense. The 2002 United States steel tariff imposed a 30% tariff on a variety of imported steel products for a period of three years. American steel producers supported the tariff, but the move was criticised by the Cato Institute.

Tariffs can occasionally emerge as a political issue prior to an election. In the leadup to the 2007 Australian Federal election, the Australian Labor Party announced it would undertake a review of Australian car tarrifs if elected. The Liberal Party made a similar commitment, while independent candidate Nick Xenophon announced his intention to introduce tariff-based legislation as "a matter of urgency

Revenue argument


United States

See also

General Agreement on Tariffs and Trade GATT


External links

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