Davis v. Michigan Department of the Treasury

Background

Paul S. Davis, a Michigan resident and former federal employee, received Civil Service retirement benefits and paid Michigan income tax on those benefits from 1979 through 1984. Michigan law exempted retirement pay from the State or its political subdivisions but taxed most other pensions, including federal pensions. After seeking refunds that were denied by Michigan courts, Davis sued, arguing the law discriminated against federal retirees in violation of federal law, 4 U.S.C. § 111, and the constitutional doctrine that bars discriminatory state taxation of federal interests.

Reasoning

The Court addressed whether federal retirement pay counts as compensation “as an officer or employee” and whether Michigan’s rule unlawfully discriminated. The majority said federal pensions are deferred compensation earned as federal service, so § 111 covers retirees. Reading the statute and past cases together, the Court held the nondiscrimination rule bars a source-based exemption that favors state retirees over federal retirees. The Court rejected Michigan’s justifications, saying differences in average benefit amounts do not justify a blanket exemption based on the source of the pension.

Real world impact

The Court found Michigan’s tax scheme invalid and held that Davis is entitled to refunds for taxes paid under the discriminatory rule. The opinion leaves the form of prospective relief open: Michigan can either extend equal tax treatment or eliminate the state-employee exemption, and Michigan courts should decide severability and the proper remedy. The decision directly affects retired federal employees in Michigan who paid state tax on federal pensions and requires the State to change its tax treatment.

Dissents or concurrances

Justice Stevens dissented, arguing the tax applied broadly to most residents and that the political check on state taxation made striking down the law unjustified. He emphasized that equal application to the general population defeats the claim of unconstitutional discrimination.