You are currently viewing Illinois State Tax Calculator 2017/2018. Use the Tax Form Calculator to calculate your Federal and State Tax Return. Updated with 2017/2018 tax tables.
The Federal tax rates have been updated to the 2017 forecast tax tables and the tax calculator now uses the 2017 tax tables as default. To calculator your 2017/2018 tax return, please select the 2017/2018 tax year. The tax calculator will continue to use the 2017/2018 State tax tables until confirmation of 2017 tax tables is published. If you have information on the 2017 State tax tables, please contact us and we will update accordingly.
The Illinois tax calculator is updated for the 2017/18 tax year. This tax calculator performs as a standalone State Tax calculator for Illinois, it does not take into account federal taxes, medicare decustions et al.
The Illinois tax calculator is designed to provide a simple illlustration of the state income tax due in Illinois, to view a comprehensive tax illustration which includes federal tax, medicare, state tax, standard/itemised deductions (and more), please use the main 2017/18 tax calculator.
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How to use the tax calculator
How to use the advanced tax calculator
The Illinois State State Tax calculator is updated to include the latest Federal tax rates for 2015-16 tax year as published by the IRS.
The Illinois State State Tax calculator is updated to include the latest State tax rates for 2017/2018 tax year and will be update to the 2018/2019 State Tax Tables once fully published as published by the various States.
Calculate your total tax due using the tax calculator (update to include the 2017/2018 tax brackets). Deduct the amount of tax paid from the tax calculation to provide an illustration of your 2017/2018 tax refund.
The following updates have been applied to the Tax calculator:
The Illinois State State tax calculator is as good as the feedback, your support, requests and bug catches help to improve the accuracy of the tax calculator for all.
This Illinois State State tax calculator aims to balance ease of use with transparency of tax calculation but is provided for illustration only. Remember that you should always seek professional advice and audit your State and Federal tax returns