The dispute in California over taxpayers’ ability to elect to use the evenly weighted, three-factor (i.e., property factor, payroll factor, and sales factor) business income apportionment formula provided by the Multistate Tax Compact (the “Compact”) has come to an end. On October 11, 2016, the US Supreme Court denied the taxpayers’ petition for certiorari in The Gillette Company, et al. v. California Franchise Tax Board, et al., No. 15-1442 — one of the most highly publicized MTC apportionment election cases.