Il Form 1040 Es - Web the illinois department of revenue (dor) dec. Enter the illinois base income you expect to receive in 2021. Amended individual income tax return: 2024 estimated income tax payments for individuals. Use this form for payments that are due on april 15, 2024,.
Amended individual income tax return: 2024 estimated income tax payments for individuals. Web the illinois department of revenue (dor) dec. Enter the illinois base income you expect to receive in 2021. Use this form for payments that are due on april 15, 2024,.