Michigan Central Railroad v. Powers

Background

A group of railroad companies sued Michigan officials after a state law set railroad taxes by applying the "average rate" of taxation paid on other property. The statute required computing that average by dividing the total tax levy on other ad valorem property by the value of that property, then applying the resulting rate to railroad property. The railroads argued the method discriminated against them, stemmed from systematic undervaluation of other property, improperly delegated legislative power, and denied a fair process.

Reasoning

The Court addressed whether the law violated federal constitutional protections. It explained that states generally have broad authority over taxation and may choose methods and classifications for tax purposes. The Court found no abandonment of legislative power because the statute prescribes a mathematical method to determine the rate, relies on data produced by local assessors, and assigns a ministerial computation to a state board. The opinion emphasized the ordinary presumption that local officials act honestly, noted that the statute provides procedures for hearings and valuation corrections, and accepted the trial court’s factual finding that there was no systematic undervaluation. On that basis the Court affirmed the lower court’s judgment upholding the statute.

Real world impact

The ruling allows Michigan to continue taxing railroad property by reference to a statewide average tax rate, so railroads in the State will face that method unless a future case shows clear, extraordinary injustice. The Court left open the possibility of relief in extreme cases but generally deferred to the legislature’s chosen taxation scheme.