Illinois Income Tax Table Illinois Income Tax Brackets (Tax Year 2020)
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Tax Year 2020 / Filed April 2021

Illinois - 2021 Single Tax Brackets
Tax Bracket Tax Rate
$0.00+ 4.95%
Illinois - 2021 Married Filing Jointly Tax Brackets
Tax Bracket Tax Rate
$0.00+ 4.85%

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This page shows Tax-Brackets.org's archived Illinois tax brackets for tax year 2020. This means that these brackets applied to all income earned in 2020, and the tax return that uses these tax rates was due in April 2021.

Illinois' income tax rates were last changed one year prior to 2021 for tax year 2020, and the tax brackets have not been changed since at least 2001.

The latest available tax rates are for 2024, and the Illinois income tax brackets have not been changed since 2021.

2021 Illinois Tax Deduction Amounts

Tax-Brackets.org also maintains an archive of important Illinois income tax exemption amounts, including the Illinois Standard Deduction, the Illinois Personal Exemption, and the Illinois Dependent Deduction. The values of these deductions for tax year 2020 are as follows:

Standard Deduction (Single) Standard Deduction (MFJ) Personal Exemption Dependant Exemption
$0.00 $0.00 $2,325.00 $2,325.00

Illinois Income Tax Table 2021 Sources & Citations

Disclaimer: While we do our best to keep our historical Illinois income tax rates up to date and complete, we cannot be held liable for errors or omissions. Is info on this page missing or out-of-date? Please let us know so we can fix it!

Tax Data Sources:

  1. The Illinois tax brackets on this page sourced from the Illinois Department of Revenue for 2021. Please contact us if any of our Illinois tax data is incorrect or out of date.

** This Document Provided By Tax-Brackets.org **
Source: http://www.tax-brackets.org/illinoistaxtable/2021