The Export Clause states that "No Tax or Duty shall be laid on Articles exported from any State." Nonetheless, it is an important one for Congress because it is one of the few limitations on Congress's taxing power. The Clause prohibits any federal tax or duty that is imposed on goods during "the course of exportation" or targeted at exports, as well as those imposed on services and activities "closely related" to the export process. Tax v. User Fee

The Export Clause only prohibits the imposition of "taxes" and "duties." It does not prohibit user fees. Congress's choice to call something a tax or a fee will not be determinative in assessing the provision's constitutionality. Rather, a court will likely examine the provision's substantive characteristics to determine if it is a fee or tax. Thus, it is possible that a charge referred to in statute as a "fee" could be recharacterized by a court to be a "tax" if it failed to meet the characteristics of a user fee (described below), and vice versa. According to that case, the primary characteristics of a user fee for purposes of the Export Clause are that it, unlike a tax, is (1) proportional to the government services or benefits received by the payor and (2) not determined solely on an ad valorem basis (i.e., not solely based on the quantity or value of the goods or services on which it is placed). In 1998, the Court in U.S. Shoe struck down the imposition of the HMT as applied to exports. Claims for Damages Under the Export Clause

Courts have found several taxes to be unconstitutional as applied to exports, including the coal excise tax and the harbor maintenance tax (see the text box above). Taxpayers who overpay a federal tax are typically required to seek a refund from the IRS using the refund process found in the Internal Revenue Code (IRC). The question here is whether there is another option: can taxpayers bring suit in the Court of Federal Claims under the Tucker Act seeking damages from the government in the amount of unconstitutional taxes paid? This same question may arise in the event that a government charge outside the IRC refund procedure was invalidated (e.g., if a non-IRC "fee" was recharacterized by a court to be a "tax"): could a person who paid the unconstitutional charge bring suit under the Tucker Act outside of any applicable administrative refund procedure? First, the Tucker Act has a longer statute of limitations than the IRC—six years from the time the tax is paid, compared to three years from such time. As a result, the Tucker Act could allow parties farther down the supply chain (e.g., exporters) to bring claims alleging they deserved damages because they bore the economic burden of the tax through higher prices. A threshold issue is whether the Court of Federal Claims can hear these suits. Thus, a key question is whether the Export Clause provides a right to monetary damages when the government violates it. However, in a 2008 decision, United States v. Clintwood Elkhorn Mining Co. , the Supreme Court held that taxpayers seeking refunds for the unconstitutionally imposed coal excise tax must comply with the IRC refund process. Notably, the Court did not address whether the Export Clause provides a cause of action that could be brought under the Tucker Act, finding that the IRC refund provisions would apply regardless. Because these issues are matters of statutory construction, Congress has the option to modify the refund procedures for taxes imposed in violation of the Export Clause, if it so chooses (e.g., as it did by providing an alternative refund process for the coal excise tax post- Clintwood Elkhorn ).
The Export Clause, found in Article I, Section 9, Clause 5 of the U.S. Constitution, directly states "No Tax or Duty shall be laid on Articles exported from any State." The Clause represents one of the few restrictions on Congress's otherwise broad taxing power. Examples of taxes that have been found unconstitutional as applied to exports include the harbor maintenance tax and the excise tax on domestically mined coal.
The Clause prohibits taxes and duties that are targeted at exports or imposed on goods during "the course of exportation." It also protects those services and activities that are "closely related" to the export process. Importantly, pre-export goods and services are not exempt from otherwise generally applicable taxes.
The Export Clause only prohibits the imposition of taxes and duties. It does not prohibit user fees. Congress's choice to call something a tax or a fee will not be determinative in assessing the provision's constitutionality; rather, a court will likely examine the provision's substantive characteristics to determine if it is a fee or tax. According to the Supreme Court, the primary characteristics of a user fee are that it, unlike a tax, is (1) proportional to the government services or benefits received by the payor and (2) not determined solely on an ad valorem basis (i.e., not based solely on the quantity or value of the goods or services on which it is placed). Thus, it is possible that a charge referred to in statute as a "fee" could be recharacterized by a court to be a "tax" if it failed to meet these criteria, and vice versa.
When a government charge has been imposed in violation of the Export Clause, one issue that arises is the remedy for persons who paid the unconstitutional amount. Typically, taxpayers who overpay a tax are required to seek a refund using the process found in the Internal Revenue Code (IRC). In the event that a "fee" was recharacterized as an impermissible tax, there might be a similar administrative refund procedure. The question here is whether it is possible to bring suit in the Court of Federal Claims under the Tucker Act seeking damages from the government in the amount of unconstitutional amounts paid. Taxpayers may prefer the Tucker Act because it has a longer statute of limitations than the IRC—six years from the time the tax is paid versus three years—and, in some situations, might allow parties farther down the supply chain (e.g., exporters) to bring claims alleging they deserve damages because they bore the economic burden of the tax through higher prices.
A threshold issue has been whether the Court of Federal Claims can hear these suits. In order for a claim to be permissible under the Tucker Act, two things must be true: (1) the Export Clause must provide a right to monetary damages when the government violates it, and (2) it must be permissible to make such a claim independent of an IRC (or other administrative) refund claim. In 2008, the Supreme Court held that taxpayers must comply with the IRC procedures when seeking refunds for the unconstitutionally imposed coal excise tax. It appears the Court's holding would apply to any tax covered by the IRC refund process. The Court did not address whether the Export Clause provides a right to monetary damages, finding that the IRC refund process applies regardless. Because these issues are matters of statutory construction, Congress has the option to modify the refund procedures for taxes imposed in violation of the Export Clause, if it so chooses. For example, after the 2008 Supreme Court case, Congress provided an alternative refund process for the coal excise tax that extended the statute of limitations and expanded the opportunity for exporters to seek refunds.