Illinois Form 1040 - This form is used by illinois residents who file an individual income tax. Use this form for payments that are due on april 15, 2024,. Income tax rate the illinois income. 2024 estimated income tax payments for individuals. We last updated the individual.
2024 estimated income tax payments for individuals. Use this form for payments that are due on april 15, 2024,. This form is used by illinois residents who file an individual income tax. Income tax rate the illinois income. We last updated the individual.