OK, that’s bit more than the data actually say. But Goldy has a piece on a study of economic growth in the last decade.
According to a new report from the Institute on Taxation and Economic Policy (ITEP), the economies of the nine states without a personal income tax (Washington included) have actually underperformed both the economies of the nine states with the highest income tax rates, and the 41 income tax states as a whole. Over the past decade real per capita GDP growth was only 5.2 percent in the non-income-tax states, compared 8.2 percent in the nine highest taxed states. Real median household income also fell further in the non-income-tax states, while unemployments were largely uniform across all three groups.
Washington actually did better than average on both per capita GDP and median income growth (while slightly worse on unemployment), but given the aggregate performance of the non-income-tax states it is impossible to argue that our lack of an income tax had anything to do with it. Unless you’re an idiot. Or a liar.
So yeah, 50 quite different states over a relatively short period of time is hardly the last word on what types of taxes make the most sense. But it certainly puts the lie to the notion that we’re getting ahead as a state because of our tax structure. If anything, it’s holding us back.