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2023 Exempt Organization Income and Replacement Tax Forms

Name
 Description
IL-990-T Instructions Exempt Organization Income and Replacement Tax Return
IL-990-T-V  

Payment Voucher for Exempt Organization Income and Replacement Tax

To make a return or extension payment, use this voucher and Appendix B of Form IL-990-T Instructions.
To make an estimated payment, use this voucher and Appendix A of Form IL-990-T 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-990-T-X​
 Instructions​ ​Amended Exempt Organization Income and Replacement Tax Return
IL-990-T-X-V  

Payment Voucher for Amended Exempt Organization Income and 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 Instructions Replacement Tax Investment Credits
Schedule 1299-D Instructions Income Tax Credits (for corporations and fiduciaries)
Schedule 1299-I   Income Tax Credits Information and Worksheets
Schedule 4255 Instructions Recapture of Investment Tax Credits