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?
Subscribe to get insights from our trusted experts delivered straight to your inbox.
Subscribe
Get facts about taxes in your state and around the U.S.
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).
9 min read
People respond to incentives. As tax rates increase or products are banned from sale, consumers and producers search for ways around these penalties and restrictions.
19 min read
In times of high inflation, states should consider adopting permanent full expensing because it boosts long-run productivity, economic output, and wages.
7 min read
All corporate income taxes fall on capital investment, but the structure should not make matters worse, and policymakers should take care not to distort investment decisions through the use of targeted incentives for select firms or activities instead of a lower rate for all businesses.
2 min read
Remote and flexible work opportunities are here to stay, whether states like it or not. With enhanced opportunities to take their job with them wherever they please, more workers can factor tax burdens into their decision of where to live.
15 min read
Recreational marijuana taxation is one of the hottest policy issues in the U.S. Currently, 19 states have implemented legislation to legalize and tax recreational marijuana sales.
6 min read
While there are many ways to show how much is collected in taxes by state governments, our Index is designed to show how well states structure their tax systems by focusing on the how more than the how much in recognition of the fact that there are better and worse ways to raise revenue.
129 min read
IRS and Census data show that people and businesses favor states with low and structurally sound tax systems, which can impact the state’s economic growth and governmental coffers.
12 min read
When examining tax burdens on businesses, it is important to consider both federal and state corporate taxes. Corporate taxes are one of the most economically damaging ways to raise revenue and are a promising area of reform for states to increase competitiveness and promote economic growth, benefiting both companies and workers.
3 min read
Property taxes are the primary tool for financing local government and generating state-level revenue in some states as well.
5 min read
The mix of tax sources states choose can have important implications for both revenue stability and economic growth, and the many variations across states are indicative of the different ways states weigh competing policy goals.
29 min read