A tariff is a tax levied by a government on imported goods. In some countries it also may be a tax on exported goods. A tariff also is called a customs duty or an impost.

In general terms the purposes of a tariff are twofold:

  1. To supply revenue to the government. This was especially true in the early days of the United States when other forms of federal taxation had not been developed

  2. To protect domestic producers from foreign competition. Placing a tax on an imported foreign item would make a similar domestic item more competitive in price. Use of this form of tariff is called protectionism. The stock argument presented by protectionists is that such duties are needed only until there is an equalization of production costs between the U.S. and the foreign nation.
A protective tariff is the opposite of free trade .

The Constitution (text) gives Congress the power to collect duties and imposts (Article I, Section 8, Clause 1), but prohibits the imposition of export duties (Article I, Section 9, Clause 5).

See tariff table summary.
See also
U.S. Constitution (narrative) .

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ASD Tariffs
2 TERMINAL RAILWAY TASD Rail Terminal Tariff No. 8017-Supplement 64 Please read our Tariff Disclaimer ASPA Berth Application (PDF) On-line ASPA Berth Application. Results will be emailed to ASPA. Vehicle Decal Application ...

McKinley Tariff
Tariffs are taxes placed on foreign goods by federal governments. By placing taxes on foreign goods, these products become more expensive. As a result of the increased prices for foreign goods, hopefully citizens of a nation will purchase items ...

The protective tariff
In 1828 a new revision of the tariff was made in favor of protection. The fight had now become bitter. The general growth of manufacturing interests throughout the North had given the protectionists the balance of strength, and the free-traders ...
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