Il-1040 Form 2022 - 2023 estimated income tax payments for individuals. Web the illinois department of revenue (dor) dec. Income tax rate the illinois income. This form is used by illinois residents who file an individual income tax. Use this form for payments that are due on april 18, 2023,.
Web the illinois department of revenue (dor) dec. Use this form for payments that are due on april 18, 2023,. Income tax rate the illinois income. 2023 estimated income tax payments for individuals. This form is used by illinois residents who file an individual income tax.