How does Illinois’s tax code compare? How does Illinois’s tax code compare? Illinois has a flat 4.95 percent individual income tax rate. Illinois has a 9.5 percent corporate income tax rate. Illinois also has a 6.25 percent state sales tax rate and an average combined state and local sales tax rate of 8.86 percent. Illinois has a 1.95 percent effective property tax rate on owner-occupied housing value.
Illinois has an estate tax. Illinois also has a 66.5 cents per gallon gas tax rate and a $2.98 cigarette excise tax rate. The State of Illinois collects $7,379 in state and local tax collections per capita. Illinois has $13,094 in state and local debt per capita and has a 51 percent funded ratio of public pension plans. Illinois’s tax system ranks 37th overall on the 2025 State Tax Competitiveness Index.
Each state’s tax code is a multifaceted system with many moving parts, and Illinois is no exception. The first step towards understanding Illinois’s tax code is knowing the basics. How does Illinois collect tax revenue? Click the tabs below to learn more! You can also explore our state tax maps, which are compiled from our annual publication, Facts & Figures 2024: How Does Your State Compare?
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The State Tax Competitiveness Index enables policymakers, taxpayers, and business leaders to gauge how their states’ tax systems compare. While there are many ways to show how much state governments collect in taxes, the Index evaluates how well states structure their tax systems and provides a road map for improvement.
115 min read
Facts & Figures serves as a one-stop state tax data resource that compares all 50 states on over 40 measures of tax rates, collections, burdens, and more.
2 min read
Tax burdens rose across the country as pandemic-era economic changes caused taxable income, activities, and property values to rise faster than net national product. Tax burdens in 2020, 2021, and 2022 are all higher than in any other year since 1978.
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Individual income taxes are a major source of state government revenue, accounting for more than a third of state tax collections. How do income taxes compare in your state?
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Graduated corporate rates are inequitable—that is, the size of a corporation bears no necessary relation to the income levels of the owners.
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Retail sales taxes are an essential part of most states’ revenue toolkits, responsible for 32 percent of state tax collections and 13 percent of local tax collections (24 percent of combined collections).
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Twenty-six states and the District of Columbia had notable tax changes take effect on January 1, 2021. Because most states’ legislative sessions were cut short in 2020 due to the COVID-19 pandemic, fewer tax changes were adopted in 2020 than in a typical year.
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On Monday, members of the bipartisan Gang of Eight negotiating an end-of-year pandemic relief package announced that they had settled on language and had divided the package into two bills: a pandemic aid package and a $160 billion state and local support package.
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Illinois voters rejected a high graduated rate income tax (“Fair Tax”) while Arizonans embraced a large income tax rate increase for high earners, among the many attention-grabbing results from Tuesday’s elections.
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President Joe Biden’s tax plan would yield combined top marginal state and local rates in excess of 60 percent in three states: California, Hawaii, and New Jersey (also New York City).
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Heading into Election Day, the Illinois legislature and Governor J.B. Pritzker (D) are trying to convince voters to scrap a key constitutional feature of Illinois’ tax system: a provision in the state constitution that prohibits a graduated-rate income tax.
18 min read
Here are the state tax ballot measures to watch on Election Day 2020. Explore the most notable 2020 state tax ballot measures in 15 states.
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State tax revenue collections were down 5.5 percent in FY 2020, driven by a dismal final quarter (April through June) as states began to feel the impact of the COVID-19 pandemic. While these early losses are certainly not desirable, they are manageable and far better than many feared.
16 min read