Schedule 1299-C - In accordance with Public Act 102-0700, the K-12 Instructional Materials and Supplies Credit (5740) was increased to $500.

Additional instructions were added throughout the return to better assist the taxpayer when filing.

Forms IL-1040 and IL-1040-X - In accordance with Public Act 103-0009, the Volunteer Emergency Worker Credit was added to Line 16.Quarterly 2024 estimated payments can be made in four equal installments based upon 90 percent of the expected liability for year 2024 or 100 percent of the liability of year 2023 to avoid penalty if the payments are made timely.The extended due date for filing your return is October 15, 2024. The original due date for filing your 2023 Form IL-1040 and paying any tax you owe is April 15, 2024.The 2023 personal exemption amount is $2,425.Visit to determine if you are eligible to use this simplified filing process. You may file with or without a MyTax Illinois account reduce errors with automated calculations and prepopulated information from previous returns pay your tax electronically or receive refunds quickly with direct deposit and receive immediate confirmation of your submitted tax return. Use MyTax Illinois to make filing your 2023 IL-1040 easier than ever.Pritzker Announces Tax Relief for Individuals and Businesses Affected by the Conflict in the Middle East news article on IDOR’s website for more information. Income tax filing and payment relief is available for individuals and businesses affected by the attacks that took place in Israel during October 2023 and the resulting Israeli-Palestinian conflict.Our highly successful methods combat criminal activity and our objective is to get your tax refund to you as quickly as possible. We continue to use and increase enhanced efforts to protect taxpayers from identity theft and tax fraud.

The Illinois Department of Revenue’s (IDOR) taxpayer assistance number is available for tax-related inquiries, and includes automated menus allowing taxpayers to check the status of a refund, identify a PIN, or receive estimated payment information without having to wait for an agent.

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