countervailing duty

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A duty levied on an imported article to offset the unfair price advantage it holds due to a subsidy paid to producers or exporters by the government of the exporting country if such imports cause or threaten injury to a domestic industry.
• noun A duty or surtax levied on an imported article to offset an excise or inland revenue tax placed upon articles of the same class manufactured domestically.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a duty imposed to offset subsidies by foreign governments