Cite as: 512 U. S. 298 (1994)
Opinion of the Court
regulating commercial relations with foreign governments." Japan Line, Ltd. v. County of Los Angeles, 441 U. S. 434, 449 (1979) (internal quotation marks omitted). We reject these arguments, and hold that the Constitution does not impede application of California's corporate franchise tax to Barclays and Colgate. Accordingly, we affirm the judgments of the California Court of Appeal.
I
A
The Due Process and Commerce Clauses of the Constitution, this Court has held, prevent States that impose an income-based tax on nonresidents from "tax[ing] value earned outside [the taxing State's] borders." ASARCO Inc. v. Idaho Tax Comm'n, 458 U. S. 307, 315 (1982). But when a business enterprise operates in more than one taxing jurisdiction, arriving at "precise territorial allocations of 'value' is often an elusive goal, both in theory and in practice." Container Corp., 463 U. S., at 164. Every method of allocation devised involves some degree of arbitrariness. See id., at 182.
One means of deriving locally taxable income, generally used by States that collect corporate income-based taxes, is the "unitary business" method. As explained in Container Corp., unitary taxation "rejects geographical or transactional accounting," which is "subject to manipulation" and does not fully capture "the many subtle and largely unquantifiable transfers of value that take place among the components of a single enterprise." Id., at 164-165. The "unitary business/formula apportionment" method
"calculates the local tax base by first defining the scope of the 'unitary business' of which the taxed enterprise's activities in the taxing jurisdiction form one part, and then apportioning the total income of that 'unitary business' between the taxing jurisdiction and the rest of the world on the basis of a formula taking into account ob-
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