2017 Corporate Income Tax Forms

NameDescription
IL-1120 Instructions Corporation Income and Replacement Tax Return
IL-1120-X Instructions Amended Corporation Income and Replacement Tax Return
IL-1120-V
Payment Voucher for Corporation Income and Replacement Tax
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 SA (IL-1120) Instructions Specific Accounting Method of Computing Net Income for Corporations
Schedule 4255 Instructions Recapture of Investment Tax Credits
Subgroup Schedule (UB) Instructions Subgroup Schedule