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Illinois Income Tax Calculator

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Overview of Illinois Taxes

Illinois has a flat income tax that features a 4.95% rate. This means that no matter how much money you make, you pay that same rate. Sales and property taxes in Illinois are among the highest in the nation.

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Your Income Taxes Breakdown

Tax Type Marginal 
Tax Rate
Effective 
Tax Rate
2023 
Taxes*
Federal
FICA
State
Local
Total Income Taxes
Income After Taxes
Retirement Contributions
Take-Home Pay

* These are the taxes owed for the 2023 - 2024 filing season.

Your 2023 Federal Income Tax Comparison

  • Your marginal federal income tax rate
  • Your effective federal income tax rate
  • Your federal income taxes

Total Estimated 2023 Tax Burden

Income Tax $
Sales Tax $
Fuel Tax $
Property Tax$
Total Estimated Tax Burden $
Percent of income to taxes = %
$
  • About This Answer

    Our income tax calculator calculates your federal, state and local taxes based on several key inputs: your household income, location, filing status and number of personal exemptions.

    How Income Taxes Are Calculated

    • First, we calculate your adjusted gross income (AGI) by taking your total household income and reducing it by certain items such as contributions to your 401(k).
    • Next, from AGI we subtract exemptions and deductions (either itemized or standard) to get your taxable income. Exemptions can be claimed for each taxpayer as well as dependents such as one’s spouse or children.
    • Based on your filing status, your taxable income is then applied to the the tax brackets to calculate your federal income taxes owed for the year.
    • Your location will determine whether you owe local and / or state taxes.
    ...read more
  • Last Updated: January 1, 2024

    When Do We Update? - We regularly check for any updates to the latest tax rates and regulations.

    Customer Service - If you would like to leave any feedback, feel free to email info@smartasset.com.

    ...read more
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Taxes in Illinois

Illinois State Tax Quick Facts 

  • Income tax: 4.95% flat rate
  • Sales tax: 6.25% - 11.50%
  • Property tax: 2.23% effective rate
  • Gas tax: 39.2 cents per gallon of regular gasoline, 46.7 cents per gallon of diesel

The state of Illinois has a flat income tax, which means that everyone, regardless of income, is taxed at the same rate. That makes it relatively easy to predict the income tax you will have to pay. The income tax rate in Illinois is 4.95%, after an increase from 3.75% in 2017. Illinois also has higher-than-average sales taxes and property taxes.

A financial advisor can help you understand how taxes fit into your overall financial goals. SmartAsset’s free tool matches you with up to three vetted financial advisors who serve your area, and you can have a free introductory call with your advisor matches to decide which one you feel is right for you. If you’re ready to find an advisor who can help you achieve your financial goals, get started now.

Illinois Income Taxes

The income tax system in Illinois emphasizes simplicity. The state’s flat rate of 4.95% means that you don’t need any tables to figure out what rate you will be paying. Also, the system’s heavy reliance on the federal tax code means you won’t need to learn a new set of rules for filing your state return. On the other hand, the flat rate does have drawbacks: Low earners can expect to pay more in Illinois than in many other states that have a progressive income tax.

When filing an income tax return in Illinois, taxpayers begin with their federal adjusted gross income (AGI, or taxable income, is income minus certain deductions). From there, certain items may be added back in, and others may be subtracted. Among the most important items that are taxable federally but not in Illinois are retirement and Social Security income, as well as distributions from a 529 college savings plan.

Illinois Tax Credits

There are several important tax credits in Illinois. These reduce a taxpayer’s total tax bill by some amount, which is in contrast to tax deductions, which only reduce a taxpayer’s taxable income. For example, the Illinois Property Tax Credit is equal to 5% of Illinois property tax paid on a principal residence for single filers with an AGI of $250,000 or less and joint filers with AGI of $500,000 or less. If you paid $1,000 in property taxes in 2023, you could claim a credit of $50 on your income tax return, which equates to $50 less that you end up paying in taxes.

The Earned Income Tax Credit is currently 20% of the federal credit by the same name. For tax year 2023, the maximum state credit a person can claim is $1,486. The Education Expense Credit provides a credit to parents who spent over $250 on eligible K-12 education expenses.

Illinois Sales Tax

As simple as Illinois tries to make income tax, the state seems to take the opposite approach with sales taxes. There are three rate structures depending on what you are buying. The three categories are qualifying food and drugs, vehicles and general merchandise.

Food, drugs and medical appliances are all subject to a statewide tax rate of 1% of purchase price, in addition to local taxes of up to 1.25%, for a total tax of up to 2.25%. There are some food items that don’t count as a qualifying food. For example, candy and soda are generally subject to the higher “general merchandise” rate, but any candy containing flour is not, for sales tax purposes, classified as candy.

Vehicles also have their own tax rate. In general, the rate ranges from 6.25% to over 8.50%, depending on where the vehicle is purchased. Owner-to-owner sales, however, are subject to a lower rate, which depends on the price of the vehicle and, in some situations, the model year.

The general merchandise sales tax applies to almost all other products purchased for use in Illinois. The base rate is 6.25%. However most areas have additional local taxes between 0% and 5.25%. Cook, Kane and Warren counties are home to the state's highest combined sales tax rates of 11.50%, 11% and 11%, respectively.

Below is a table of the general merchandise sales tax rates for all of the counties in Illinois.

Sales Tax Rates(Updated January 2024)

CountyMaximum Sales Tax Rate in County
Adams County9%
Alexander County8.5%
Bond County8.75%
Boone County8.75%
Brown County8.25%
Bureau County8%
Calhoun County8%
Carroll County7.5%
Cass County8.25%
Champaign County9%
Christian County9%
Clark County8.25%
Clay County7.75%
Clinton County8.85%
Coles County8.75%
Cook County11.5%
Crawford County7.25%
Cumberland County7.75%
De Witt County8.25%
Dekalb County8.25%
Douglas County8.75%
Dupage County10.5%
Edgar County8.75%
Edwards County7.75%
Effingham County7.5%
Fayette County8.25%
Ford County7.5%
Franklin County9.5%
Fulton County9.75%
Gallatin County8.25%
Greene County8%
Grundy County9%
Hamilton County8.25%
Hancock County8.25%
Hardin County8.25%
Henderson County8%
Henry County8.25%
Iroquois County7.25%
Jackson County9.75%
Jasper County7.75%
Jefferson County9.5%
Jersey County10.5%
Jo Daviess County8.25%
Johnson County8.5%
Kane County11%
Kankakee County8.25%
Kendall County9.25%
Knox County10%
La Salle County8.5%
Lake County10%
Lawrence County7.75%
Lee County8.25%
Livingston County8.25%
Logan County9.25%
Macon County9.25%
Macoupin County9.25%
Madison County9.6%
Marion County9.5%
Marshall County7.25%
Mason County8.75%
Massac County7.75%
Mcdonough County9%
Mchenry County9%
Mclean County8.75%
Menard County8.75%
Mercer County8%
Monroe County8.5%
Montgomery County8.25%
Morgan County8.25%
Moultrie County7.75%
Ogle County8.75%
Peoria County10%
Perry County9.75%
Piatt County8.25%
Pike County8%
Pope County8.25%
Pulaski County7.75%
Putnam County7.25%
Randolph County8.25%
Richland County8.75%
Rock Island County9.5%
Saline County8.75%
Sangamon County9.75%
Schuyler County8.25%
Scott County7.75%
Shelby County8.25%
St Clair County9.85%
Stark County7.75%
Stephenson County8%
Tazewell County9.5%
Union County9.5%
Vermilion County9.25%
Wabash County7.25%
Warren County11%
Washington County7.75%
Wayne County8.25%
White County8.25%
Whiteside County9.25%
Will County10.25%
Williamson County10%
Winnebago County9.75%
Woodford County9.25%

Illinois Property Tax

The 2.23% effective property tax rate in Illinois is second-highest in the nation, behind only New Jersey. That means the typical homeowner in the Prairie State pays 2.23% of their home value in property taxes.

Property taxes are collected by multiple local authorities: city governments, county governments, municipal transportation districts and even a collection of taxing authorities called “mosquito abatement districts,” which, as you might have guessed, kill mosquitoes. In total, there are almost 8,500 different authorities with the power to levy taxes in Illinois, more than in any other state.

Our Illinois mortgage rates guide has important information about mortgages in the Prairie State that will help make the process of getting a mortgage a bit easier – whether you’re looking to purchase a property or refinance.

Illinois Estate Tax

Illinois is one of 13 states with an estate tax. For tax year 2023, estates worth less than $4 million are exempt. Estates over that amount must file an Illinois estate tax return and face tax rates up to 16%. But not all estates that file a return will pay taxes. Certain tax deductions may reduce the taxable estate below the taxable limit, and property or assets left to the husband, wife or civil union partner or the decedent are not taxable.

Illinois Telecommunications Tax

The telecommunications tax is a tax on services including home phone lines, cell phones, television service and internet. It varies by location, but is generally about 7% of the price of service.

Illinois Gasoline Tax

The state of Illinois collects 39.2 cents for every gallon of regular gasoline. That is one of the highest in the nation. The diesel tax rate is also quite high at 46.7 cents per gallon.

Illinois Alcohol and Tobacco Tax

Illinois applies per-gallon alcohol excise taxes based on the alcohol content of the beverage being sold. Beer will generally be subject to a rate of 23.1 cents per gallon while wine and liquor are subject rates of $1.39 and $8.55 per gallon, respectively. The cigarette excise tax in Illinois is $2.98 per pack of 20.

Photo credit: flickr
  • Illinois is the home state of former U.S. president, Barack Obama.
  • Former U.S. president Abraham Lincoln owned and operated a bar in New Salem, Illinois, before entering politics.
  • “Illinois” is the French adaptation of an Algonquin word that means warriors.