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.
24 min read
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?
8 min read
Graduated corporate rates are inequitable—that is, the size of a corporation bears no necessary relation to the income levels of the owners.
7 min read
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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While throwback and throwout rules in states’ corporate tax codes may not be widely understood, they have a notable impact on business location and investment decisions and reduce economic efficiency.
4 min read
The overall U.S. tax and transfer system is overwhelmingly progressive, and understanding the extent—and source—of that progressivity is essential for lawmakers considering the trade-offs associated with each tax policy decision.
23 min read
As housing prices are rapidly increasing, and property tax bills along with them, the property tax has come into the spotlight in many states. The design of a state’s property tax system can affect how attractive that state is to businesses and residents.
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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
States can better position themselves for success by moving away from economically-damaging taxes like the capital stock tax.
4 min read
A growing number of cities, in red states like Arkansas and Texas, blue states like California and New Jersey, and purple states like Georgia and Nevada, have pursued streaming taxes in recent years.
7 min read
Individual income taxes are a major source of state government revenue, accounting for more than a third of state tax collections:
9 min read
If your state issued tax rebates last year, you might have to pay federal income tax on the rebate you received. Maybe. Who knows? Unfortunately, not the IRS—at least not yet.
5 min read
While many factors influence business location and investment decisions, sales taxes are something within policymakers’ control that can have immediate impacts.
11 min read
At the end of 2022, prices were 14.6 percent higher than they were two years prior. That’s the fastest inflation rate over any two calendar years since the stagflation era of the late 1970s. State policymakers are understandably interested in bringing any tools at their disposal to bear on the problem. And many of them are reaching for tax policy solutions.
7 min read