| Name |
Description |
|---|
| IL-1120 |
Instructions |
Corporation Income and Replacement Tax Return |
| IL-1120-V |
|
Payment Voucher for Corporation Income and Replacement Tax |
| IL-1120-X |
Instructions |
Amended Corporation Income and Replacement Tax Return |
| IL-1120-X-V |
|
Payment Voucher for Amended Corporation Income and Replacement Tax |
| IL-477 |
Instructions |
Replacement Tax Investment Credits |
| IL-2220 |
Instructions |
Computation of Penalties for Businesses |
IL-4562
|
Instructions |
Special Depreciation |
| Schedule INL |
Instructions |
Illinois Net Loss Adjustments for Cooperatives and REMIC Owners |
| Schedule INS |
Instructions |
Tax for Foreign Insurers |
| Schedule J |
|
Foreign Dividends |
| Schedule M |
Instructions |
Other Additions and Subtractions (for businesses) |
| Schedule NB |
Instructions |
Nonbusiness Income |
| Schedule NLD |
Instructions |
Illinois Net Loss Deduction |
| Schedule UB |
Instructions |
Combined Apportionment for Unitary Business Group |
| Schedule UB/INS |
Instructions |
Tax for a Unitary Business Group with Foreign Insurer Members |
| Schedule UB/NLD |
Instructions |
Unitary Illinois Net Loss Deduction |
| Schedule 80/20 |
Instructions |
Related-Party Expenses |
| Schedule 1299-B |
Instructions |
River Edge Redevelopment Zone or Foreign Trade Zone (or sub-zone) Subtractions (for corporations and fiduciaries) |
| Schedule 1299-D |
Instructions |
Income Tax Credits (for corporations and fiduciaries) |
| Schedule 1299-D (R&D) |
Instructions |
Research and Development Credit Supplemental Schedule (for corporations and fiduciaries) |
| Schedule SA (IL-1120) |
Instructions |
Specific Accounting Method of Computing Net Income for Corporations |
| Schedule 1299-S |
|
Obsolete - See the Illinois Department of Commerce and Economic Opportunity website for a list of enterprise zones, river edge redevelopment zones, and the DCEO contact information. |
| Schedule 4255 |
Instructions |
Recapture of Investment Tax Credits |
Agencies
Services