Illinois Tax Brackets, Rates, and Standard Deductions

Prepare and e-File your Illinois Income Taxes here on together with your Federal Income Tax Return. Per IRS/State regulation - not - an Illinois state tax return can only be e-Filed together with an IRS tax return. Instruction how to only prepare a IL state return on and then download, print sign and mail it in. 

Detailed Information about Illinois state income tax brackets and rates, standard deduction information, and tax forms by tax year etc. can be found on this page. 

Still need to prepare and file an IL return for a previous Tax Year? Find the Illinois tax forms below. You can complete and sign the forms here on before you mail them to the Illinois Department of Taxation. For IRS or Federal back taxes, access the tax forms here.

Below find links to other important Illinois income tax return information and other related features (e.g. tax extension, amendment, etc.).

Illinois Income Tax Returns

Illinois Income Taxes
Prepare only an IL State Return without an IRS return. Details
File a Illinois Tax Amendment
Current Illinois Income Tax Forms
Illinois Tax Brackets, Rates explained
IRS Tax Brackets, Rates by Tax Year
Calculate and Estimate your IRS Income Tax Brackets and Rates with the eFile RATEucator.

Income Tax Brackets, Rates, Income Ranges, and Estimated Taxes Due

Your Illinois Income is based on a flat tax rate. When you prepare your return on this is all calculated for you.

Illinois Tax Brackets for Tax Year 2023

IL tax rate will be updated as they become available.

Illinois Tax Brackets for Tax Year 2022

2022 Illinois net income is taxed at a 4.95% flat rate.

Illinois Tax Brackets for Tax Year 2021

2021 Illinois net income is taxed at a 4.95% flat rate.

Illinois Standard and Itemized Deductions

Illinois does not have standard and itemized deductions, nor do they use the federal standard deduction amounts.