594
OCTOBER TERM, 1991
Syllabus
certiorari to the supreme court of kansas
No. 91-611. Argued March 3, 1992—Decided April 21, 1992
Title 4 U. S. C. § 111 authorizes the States to tax federal employees' compensation if the taxation does not discriminate against the employees because of the compensation's source. After Davis v. Michigan Dept. of Treasury, 489 U. S. 803, invalidated, under § 111 and the doctrine of intergovernmental tax immunity, the Michigan income tax imposed on the benefits of federal, but not state and local, civil service retirees, petitioners filed suit in a Kansas state court challenging that State's imposition of an income tax on federal military retirement benefits but not on the benefits received by retired state and local government employees. In affirming the trial court's grant of summary judgment for the state defendants, the State Supreme Court concluded that military retirement benefits constitute reduced pay for reduced current services, in contrast to the deferred compensation for past services embodied in state and local government retirement benefits, and that this "signifi-cant differenc[e]" justified the State's differential treatment of the two classes of retirees under Davis, supra, at 816.
Held: The Kansas tax on military retirees is inconsistent with § 111. The
State Supreme Court's conclusion that, for purposes of state taxation, military retirement benefits may be characterized as current compensation for reduced current services does not survive analysis on several bases. First, there are no "significant differences" between military retirees and state and local government retirees in terms of calculating retirement benefits. The amount of retired pay a service member receives is computed not on the basis of the continuing duties he actually performs, but on the basis of years served on active duty and the rank obtained prior to retirement. Military benefits thus are determined in a manner very similar to that of the Kansas Public Employee Retirement System. Second, this Court's precedents discussing military retirement pay provide no support for the state court's holding. The statement in United States v. Tyler, 105 U. S. 244, 245, that such pay is effectively indistinguishable from current compensation at a reduced rate was made in the context of the particular holding of that case, and cannot be taken as establishing that retirement benefits are for all purposes the equivalent of current compensation for reduced current services. And, although McCarty v. McCarty, 453 U. S. 210, 222, referred to Tyler, it did not expressly approve Tyler's description of mili-
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