Form Il 941 - This form is required to be. 2024 illinois withholding income tax return instructions available at tax.illinois.gov. Do not use this form as a payment voucher. This form is required to be. Illinois withholding income tax return and instructions. 2022 illinois withholding income tax return instructions available at tax.illinois.gov.
Do not use this form as a payment voucher. 2022 illinois withholding income tax return instructions available at tax.illinois.gov. Illinois withholding income tax return and instructions. 2024 illinois withholding income tax return instructions available at tax.illinois.gov. This form is required to be. This form is required to be.