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2025 Small Business Corporation Replacement Tax Forms
| Name | Instructions | Description |
|---|---|---|
| IL-1120-ST |
PDF |
Small Business Corporation Replacement Tax Return (includes Schedule B) |
| IL-1120-ST-V | Payment Voucher for Small Business Corporation Replacement Tax To make a return or extension payment, use this voucher and Appendix A of Form IL-1120-ST Instructions. Important: Ensure the proper month and year of the filing period you wish to make a payment for is entered on the "Tax year ending" lines of the voucher. |
|
| IL-1120-ST-X |
PDF | Amended Small Business Corporation Replacement Tax Return (includes Schedule B) |
| IL-1120-ST-X-V | Payment Voucher for Amended Small Business Corporation Replacement Tax Important: Ensure the proper month and year of the filing period you wish to make a payment for is entered on the "Tax year ending" lines of the voucher. |
|
| IL-477 | Replacement Tax Investment Credits |
|
| IL-1000-E | Certificate of Exemption for Pass-through Withholding Payments | |
| IL-2220 | Computation of Penalties for Businesses |
|
| IL-4562 | HTML | PDF | Special Depreciation |
| Schedule F | Gains from Sales or Exchanges of Property Acquired Before August 1, 1969 | |
| Schedule K-1-P |
Partner's or Shareholder's Share of Income, Deductions, Credits, and Recapture | |
| Schedule K-1-P(1) | Instructions for Partnerships and S Corporations Completing Schedule K-1-P, Schedule K-1-P(3), and Schedule K-1-P(4) | |
| Schedule K-1-P(2) | Partner's and Shareholder's Instructions | |
| Schedule K-1-P (3) | Pass-through Withholding Calculation for Nonresident Members | |
| Schedule M | Other Additions and Subtractions (for businesses) |
|
| Schedule NB | Nonbusiness Income | |
| Schedule NLD | Illinois Net loss Deduction | |
| Schedule UB |
Combined Apportionment for Unitary Business Group | |
| Schedule 80/20 | Related-Party Expenses | |
| Schedule 1299-A | Tax Subtractions and Credits (for partnerships and S corporations) | |
| Schedule 1299-I | Income Tax Credits Information and Worksheets | |
| Schedule 4255 | Recapture of Investment Tax Credits | |
| Subgroup Schedule (UB) | Subgroup Schedule |