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2022 Corporate Income Tax Forms

Form Instructions Description
IL-1120

PDF

Corporation Income and Replacement Tax Return
2022-IL-1120-V  

Payment Voucher for 2022 Corporation Income and Replacement Tax (Use this voucher and Appendix A of Form IL-1120 Instructions to make a 2022 return or extension  payment)

2023-IL-1120-V Payment Voucher for 2023 Corporation Income and Replacement Tax (Use this voucher and Appendix B of Form IL-1120 Instructions to make 2023 estimated payments)
​IL-1120-X
PDF
Amended Corporation Income and Replacement Tax Return
IL-1120-X-V   Payment Voucher for Amended Corporation Income and Replacement Tax
IL-477 PDF Replacement Tax Investment Credits
IL-2220 PDF Computation of Penalties for Businesses
IL-4562

PDF

Special Depreciation
Schedule INL PDF Illinois Net Loss Adjustments for Cooperatives and REMIC Owners
Schedule INS PDF Tax for Foreign Insurers
Schedule J PDF Foreign Dividends
Schedule M PDF Other Additions and Subtractions (for businesses)
Schedule NB PDF Nonbusiness Income
Schedule NLD PDF Illinois Net Loss Deduction
Schedule UB PDF Combined Apportionment for Unitary Business Group
Schedule UB/INS PDF Tax for a Unitary Business Group with Foreign Insurer Members
Schedule UB/NLD PDF Unitary Illinois Net Loss Deduction
Schedule 80/20 PDF Related-Party Expenses
Schedule 1299-B PDF

River Edge Redevelopment Zone or Foreign Trade Zone (or sub-zone) Subtractions (for corporations and fiduciaries)
Schedule 1299-D

PDF

Income Tax Credits (for corporations and fiduciaries)
Schedule 1299-I   Income Tax Credits Information and Worksheets
Schedule 4255

PDF

 
Subgroup Schedule (UB) PDF
Subgroup Schedule