Definitions and special rules

For purposes of this subchapter— The term “crude oil” includes crude oil condensates and natural gasoline. The term “domestic crude oil” means any crude oil produced from a well located in the United States. The term “petroleum product” includes crude oil. The term “United States” means the 50 States, the District of Columbia, the Commonwealth of Puerto Rico, any possession of the United States, the Commonwealth of the Northern Mariana Islands, and the Trust Territory of the Pacific Islands. The principles of section 638 shall apply for purposes of the term “United States”. The term “United States” includes any foreign trade zone of the United States. The term “United States refinery” means any facility in the United States at which crude oil is refined. In the case of any United States refinery which produces natural gasoline from natural gas, the gasoline so produced shall be treated as received at such refinery at the time so produced. The term “premises” has the same meaning as when used for purposes of determining gross income from the property under section 613. The term “barrel” means 42 United States gallons. In the case of a fraction of a barrel, the tax imposed by section 4611 shall be the same fraction of the amount of such tax imposed on a whole barrel. No tax shall be imposed by section 4611 with respect to any petroleum product if the person who would be liable for such tax establishes that a prior tax imposed by such section has been imposed with respect to such product. Under regulations prescribed by the Secretary, if an operator of a United States refinery— There shall be allowed as a credit against so much of the tax imposed by section 4611 as is attributable to the Oil Spill Liability Trust Fund financing rate for any period an amount equal to the excess of— the sum of— For purposes of section 38, the current year business credit shall include the credit determined under this subsection. The credit determined under this subsection for any taxable year is an amount equal to the aggregate credit which would be allowed to the taxpayer under subsection (d) for amounts paid into the Trans-Alaska Pipeline Liability Fund had the Oil Spill Liability Trust Fund financing rate not ceased to apply. The amount of the credit determined under this subsection for any taxable year with respect to any taxpayer shall not exceed the excess of— The amount determined under this clause with respect to any taxpayer is the excess of— The Secretary shall from time to time transfer from the Oil Spill Liability Trust Fund to the general fund of the Treasury amounts equal to the credits allowed by reason of this subsection. Transfers may be made under subparagraph (A) only to the extent that the unobligated balance of the Oil Spill Liability Trust Fund exceeds $1,000,000,000. If any transfer is not made by reason of the preceding sentence, such transfer shall be made as soon as permitted under such sentence. No portion of the unused business credit for any taxable year which is attributable to the credit determined under this subsection may be carried to a taxable year beginning on or before the date of the enactment of this paragraph. The provisions of subsections (a)(3) and (b)(3) of section 7652 shall not apply to any tax imposed by section 4611.