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Illinois State Income Tax
Tax Year 2023
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Contents
Contents
1.
Illinois Income Tax Table
| Tax Bracket (Single) [2] | Tax Bracket (Couple) [3] | Marginal Tax Rate |
| $0+ | $0+ | 4.950% |
Note: Illinois' income tax has a single flat tax rate for all income.
Note: We don't currently have Illinois' income tax brackets for tax year 2024. Until updated 2024 tax rates become available for Illinois, the tax brackets shown above and used in the income tax calculator will be from tax year 2023.
Learn how marginal tax brackets work 
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Illinois Income Tax Calculator
3.
The Illinois Income Tax
Illinois collects a state income tax at a maximum marginal tax rate of %, spread across tax brackets. Unlike the Federal Income Tax, Illinois' state income tax does not provide couples filing jointly with expanded income tax brackets.
Illinois' maximum marginal income tax rate is the 1st highest in the United States, ranking directly below Illinois' %. You can learn more about how the Illinois income tax compares to other states' income taxes by visiting our map of income taxes by state.
The Illinois income tax was lowered from 5% to 3.75% in 2015. Previously, the tax rate was raised from 3% to 5% in early 2011 as part of a statewide plan to reduce deficits. If you expect to owe $500 or more on April 15th, you must pay your income tax to Illinois quarterly using Form IL-1040-ES.
There are 114 days left until Tax Day, on April 16th 2025. The IRS will start accepting eFiled tax returns in January 2020 - you can start your online tax return today for free with TurboTax .
4.
Illinois Tax Deductions
Income tax deductions are expenses that can be deducted from your gross pre-tax income. Using deductions is an excellent way to reduce your Illinois income tax and maximize your refund, so be sure to research deductions that you mey be able to claim on your Federal and Illinois tax returns. For details on specific deductions available in Illinois, see the list of Illinois income tax deductions.
4.1 - Illinois Standard Deduction
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Unlike many other states, Illinois has no standard deduction. Certain itemized deductions (including property tax, qualified charitable contributions, etc) may be allowed depending on the income level and filing type of the taxpayer. Keep in mind that not all deductions allowed on your federal income tax return are necessarily going to be allowed on your Illinois income tax return.
4.2 - Illinois Personal Exemptions
- Illinois has no personal exemption. The Federal Income Tax, however, does allow a personal exemption to be deducted from your gross income if you are responsible for supporting yourself financially.
4.3 - Illinois Dependent Deduction
- Unlike most states, Illinois does not have a dependent deduction. You can, however, claim dependent deductions on your Federal Tax Return.
4.4 - Illinois Itemized Deductions
- Unlike the Federal income tax, the Illinois income tax does not allow itemized deductions. You may claim the Illinois standard deduction if applicable, and specific deductions may be available to Illinois taxpayers as limited deductions or tax credits.
5.
Illinois Income Tax Forms
Tax-Rates.org provides easy access to five of the most commonly used Illinois income tax forms, in downloadable PDF format. For all of the tax forms we provide, visit our Illinois tax forms library or the 's tax forms page.
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Form 1040-V - Payment VoucherSubmit a completed payment voucher with all tax payments to the Illinois Department of Revenue to ensure that your payment is properly credited to your account.
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Form IL-1040 - Illinois Individual Income Tax ReturnForm IL-1040 is the standard Illinois income tax return for all permanent residents of Illinois.
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Form IL-1040-ES - Estimated Income Tax ReturnIf you owe more then $500 a year in income tax on April 15th (because of self employment or other income without tax withholding) you must file a quarterly income tax payment using the worksheet and payment voucher included in Illinois form IL-1040-ES.
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Income Tax Instructions - Illinois Income Tax Instructional BookletThis printable booklet includes instructions for filling out your IL-1040 form
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Schedule I-CR - Illinois CreditsIf you qualify for certain tax credits that are not listed on your other tax forms, you need to file schedule CR to claim those credits.
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Printable Illinois Tax Table & Tax Reference
Tax-Rates.org provides a printable Illinois datasheet including an income tax table, a list of Illinois tax deductions, important URLs and addresses, and more. This document is in PDF format.
If you are not a resident of Illinois, have a complicated tax return, or have other specialized circumstances you may need to download additional tax forms from the website. You can find all of Illinois' 2024 income tax forms on the income tax forms page .
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6.
How To File Your Illinois Income Tax Return
Once you've filled out your Illinois income tax return, you have several options for filing and paying your income tax. You can mail your return to the at the correct address below, and include your payment by check or money order. You may also electronically file your Illinois tax return through a tax preparer or using online tax software, and pay your taxes instantly using direct debit or a credit card (an additional credit card fee may apply).
7.
Where To Send Your Illinois Tax Return
If you filled out physical tax return forms, mail your completed Illinois income tax return to the Illinois no later then April 15th. Please be sure to send your completed tax forms to the correct address for your filing type.
Income Tax Returns (With Payment), Quarterly Tax Payments Illinois Department of Revenue Springfield, IL 62726-0001 |
Income Tax Returns (Without Payment) Illinois Department of Revenue PO Box 1040 Galesburg, IL 61402-1040 |
8.
e-Filing: Submit Your Illinois Tax Return Online
You can save time and money by electronically filing your Illinois income tax directly with the . Benefits of e-Filing your Illinois tax return include instant submission, error checking, and faster refund response times. Most tax preparers can electronically file your return for you, or you can do it yourself using free or paid income tax software, like the examples listed below.
Illinois provides the WebPay portal for all taxpayers to electronically file their IL-1040 forms. If you eFile your taxes, you can expect to receive your income tax refund sooner and will be able to get instant verification of your tax return submission.
Illinois also accepts online payments of your tax debt with credit cards and debit cards, or through a bank transfer. There is, however, a convenience fee for the use of a credit or debit card when paying your taxes.
To e-file your Illinois and Federal income tax returns, you need a piece of tax software that is certified for eFile by the IRS. While most in-depth tax software charges a fee, there are several free options available through the states, and simple versions are also offered free of charge by most tax software companies.
The two most popular tax software packages are H&R Block At Home, sold by the H&R Block tax preparation company, and TurboTax Federal & State, sold by the Intuit software company. Both companies produce multiple editions for simple to very complex tax returns, so be sure to carefully compare the features offered by each package.
9.
Getting Your Illinois Tax Refund
If your state tax witholdings are greater then the amount of income tax you owe the state of Illinois, you will receive an income tax refund check from the government to make up the difference.
It should take one to three weeks for your refund check to be processed after your income tax return is recieved. E-filing your return and filing early can help ensure your refund check gets sent as quickly as possible.
Once you've filed your tax return, all you have to do is wait for your refund to arrive. If you want to check the status of your Illinois tax refund, you can visit the Illinois Income Tax Refund page.
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10.
References
- Our state ranking and income tax figures are based on a family of four (married parents with two children) earning the national median household income of $50,000 per year. Deductions and personal exemptions are taken into account, but some state-specific deductions and tax credit programs may not be accounted for.
- Before the official 2024 Illinois income tax rates are released, provisional 2024 tax rates are based on Illinois' 2023 income tax brackets.
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The 2024 state personal income tax brackets are updated from the Illinois and Tax Foundation data.
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Illinois tax forms are sourced from the Illinois income tax forms page, and are updated on a yearly basis. Please make sure the Illinois forms you are using are up-to-date.
