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State Individual Income Tax ProgressivityPublished: March 28, 2007 || Availability: The nonpartisan Urban Institute publishes studies, reports, and books on timely topics worthy of public consideration. The views expressed are those of the authors and should not be attributed to the Urban Institute, its trustees, or its funders. AbstractPersonal income tax systems vary widely across states, leading to different levels of progressivity. Forty-three states and the District of Columbia have an individual income tax. Eight of these states apply a single tax rate to all taxable income, while the remaining states have multiple tax brackets and rates. Even among states with graduated rates, most systems are fairly flat. The text below is an excerpt from the complete document. Read the full article in PDF format. State Individual Income Tax ProgressivityPersonal income tax systems vary widely across states, leading to different levels of progressivity. Forty-three states and the District of Columbia have an individual income tax. Arkansas, Florida, Nevada, South Dakota, Texas, Washington, and Wyoming do not tax personal income, while New Hampshire and Tennessee only tax dividends and interest. Eight states (Colorado, Illinois, Indiana, Massachusetts, Michigan, New Hampshire, Pennsylvania, and Tennessee) apply a single tax rate to all taxable income. The remaining states mimic the federal income tax and have multiple tax brackets and rates. Although the definition of taxable income varies by state, it largely follows the federal definition, with the exception that taxpayers are not allowed to deduct state income taxes. In 2006 the top marginal tax rate ranged from 3 percent in Illinois to 9.9 percent in Rhode Island (see figure). Even among states with graduated tax rates, most systems are fairly flat. In several states, the top tax bracket begins at a very low level of taxable income ($3,000 in Alabama and Maryland). Other states have only a small difference between the lowest and highest tax rates (just 2 percentage points in Connecticut and Mississippi). In most states, however, credits and deductions lead to some progressivity in the income tax system. In Colorado and Michigan, two states with a flat tax, the top 10 percent of taxpayers still paid about half of all personal income taxes in 2003. High-income taxpayers pay an even greater share of income taxes in states with more progressive systems, including California, Delaware, Idaho, Maine, Rhode Island, South Carolina, and Vermont. For example, the top 10 percent of California taxpayers paid 73 percent of income taxes in 2003. The progressivity of a state's overall tax system depends, however, on both the characteristics of specific taxes and the mix of tax sources between relatively more progressive tax bases (for example, income and inheritance taxes) and relatively less progressive tax bases (such as sales taxes). The complete article is available in PDF format. |
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