Lawmakers who support reducing or eliminating state personal income taxes typically claim that doing so will spur economic growth. Often, this claim is accompanied by the assertion that states without income taxes are booming, and that their success could be replicated by any state that abandons its income tax. To help evaluate these arguments, this study compares the economic performance of the nine states without broad-based personal income taxes to their mirror opposites—the nine states levying the highest top marginal personal income tax rates throughout the last decade.
