Franchise Tax Board of California v. Alcan Aluminium Ltd.

Background

Alcan, a Canadian company, and Imperial, a British company, are the sole owners of American subsidiaries that do business in California. They sued the California Franchise Tax Board in federal court seeking to block the State’s unitary business or formula apportionment method. Under that method, California averages three ratios—payroll, property, and sales—to determine the share of the unitary business’s total income taxable to a particular company. The parents argued this method burdens their foreign commerce and improperly taxes income through their subsidiaries.

Reasoning

The Court considered whether the foreign parents could bring federal suits and whether the Tax Injunction Act bars federal intervention. The Justices assumed there was a federal case or controversy and that the parents had stockholder standing. But the Court held that the Tax Injunction Act forbids federal courts from enjoining state tax assessments when a plain, speedy, and efficient remedy exists in state court. The Court relied on earlier decisions saying the Act prevents federal courts from interfering with state tax collection and reflects federalism concerns. Because the parents fully control their subsidiaries and California’s refund procedures appear to allow the subsidiaries to raise similar claims, the Court concluded the parents must pursue relief in state court.

Real world impact

The decision prevents foreign parent companies from using federal courts to block California’s unitary tax when their subsidiaries can seek state remedies. It reinforces limits on federal interference in state tax collection and pushes tax disputes into state courts. The Court left open the possibility that if a state court later refuses to hear a subsidiary’s challenge, federal relief might then be reconsidered.