In the United States, state and local governments collect a significant share of the taxes. These include consumption taxes (general sales taxes and specialized excise taxes), property taxes (taxes on homes, businesses, and motor vehicles), and income taxes (on individuals and businesses).
The Institute on Taxation and Economic Policy (ITEP) calculates average effective tax rates in each of the US states at various points along the pretax income distribution. As the charts below show, households pay, on average, about 10% of their income in state and local taxes.
State and local taxes tend to be regressive — people with higher incomes pay a smaller share of their pretax income in state and local taxes than do people with lower incomes. (For a good discussion, see Katherine Newman and Rourke O’Brien’s Taxing the Poor.) This is clearly visible in these charts. If the line for a state slopes up to the right, its tax system is progressive, If the line is flat, the tax system is proportional. If the line slopes down to the right, the tax system is regressive.
Sales taxes are almost always regressive, while income taxes tend to be progressive. In most states, the regressive impact of sales taxes outweighs the progressive effect of income taxes. And a handful of states don’t have income taxes.
ITEP calculates a progressivity index, measured as the degree to which state and local taxes make the distribution of income in a state more equal (progressive) or more unequal (regressive). If state and local taxes make a state’s income distribution more equal by more than 2.5%, I’ll call the tax system progressive. If they make the income distribution more unequal by more than 2.5%, I’ll call it regressive. If they change the income distribution in either direction by 2.5% or less, I’ll call the tax system proportional. By this measure, no state has a progressive tax system (California’s comes closest), 19 states have proportional systems (e.g., New York and New Jersey), and 32 have regressive systems (especially states with no income tax, such as Texas, Florida, and Washington).