| Name | Description |
|---|---|
| Click here to WebFile your IL-941 return or WebPay your IL-501 | |
| IL-501 | Payment Coupon and Instructions (R-12/11) |
| IL-941 | Illinois Withholding Income Tax Return and Instructions (R-12/11) |
| IL-941-X | Amended Illinois Withholding Income Tax Return (R-12/11) |
| IL-700-T | Illinois Withholding Tax Tables (R-12/11) |