Florida Challenges California’s Corporate Tax Formula at the Supreme Court

Whether or not the Court takes the case, Florida’s challenge puts the constitutionality of single-sales-factor formulas squarely in the national spotlight.

Florida has invoked the U.S. Supreme Court’s original jurisdiction to challenge California’s corporate income tax apportionment rule.

The complaint argues that California’s single-sales-factor formula and its exclusion of “substantial and occasional” property sales from the apportionment denominator are unconstitutional tariffs that shift tax revenue an…