Exxon Corp. v. Department of Revenue of Wis.

This case raises three important questions regarding state taxation of the income of a vertically integrated corporation doing business in several States. The first issue is whether the Due Process Clause of the Fourteenth Amendment prevents a State from applying its statutory apportionment formula to the total corporate income of the taxpayer when the taxpayer’s functional accounting separates its income into the three distinct categories of marketing, exploration and production, and refining, and when the taxpayer performs only marketing operations within the State. The second issue is…