Illinois Form Il 941 - Electronically file this form on. 2024 illinois withholding income tax return instructions available at tax.illinois.gov. This form is required to be. 2024 amended illinois withholding income tax return. 2022 illinois withholding income tax return.
This form is required to be. 2024 illinois withholding income tax return instructions available at tax.illinois.gov. 2024 amended illinois withholding income tax return. 2022 illinois withholding income tax return. Electronically file this form on.