2020 Corporation Tax Forms

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​If you have questions about our fill-in forms, please refer to our instructions. This option will not electronically file your form.

Need to file your tax return? See the 2019 income tax forms.

7/28/2020 2:34 PMForm-Corp; Form; Form-Flat2020ISE-Admin-TechForm 1CNSNo5798Composite Wisconsin Individual Income Tax Return for Nonresident Tax-Option (S) Corporation ShareholdersDRAFT
8/7/2020 2:45 PMForm-Corp; Form-Flat; Form2020ISE-Admin-TechForm 5SNo5800Form 5SWisconsin Tax-Option (S) Corporation Franchise or Income Tax ReturnDRAFT
4/14/2020 2:31 PMForm-Corp; Form-Instructions2020ISE-Admin-TechForm Corp-ES InstructionsNo5771Wisconsin Corporation Estimated Tax Voucher InstructionsFINAL
2/6/2020 3:39 PMForm-Corp; Form-Fiduciary; Form-Flat; Form-Ind-Income; Form-Partnership2020ISE-Admin-TechForm HR-TNo5769Transfer of Supplement to Federal Historic Rehabilitation CreditFINAL
2/7/2020 7:46 AMForm-Corp; Form-Fiduciary; Form-Ind-Income; Form-Instructions; Form-Partnership2020ISE-Admin-TechForm HR-T InstructionsNo5770Transfer of Supplement to the Federal Historic Rehabilitation Credit InstructionsFINAL
7/28/2020 2:36 PMForm; Form-Corp; Form-Flat; Form-Fiduciary; Form-Partnership2020ISE-Admin-TechForm PW-1No5797Wisconsin Nonresident Income or Franchise Tax Withholding on Pass-Through Entity IncomeDRAFT
4/14/2020 2:31 PMForm-Instructions; Form-Partnership; Form-Corp; Form-Fiduciary2020ISE-Admin-TechForm PW-ES InstructionsNo5772Wisconsin Pass-Through Entity Withholding Electronic Payment Voucher InstructionsFINAL
7/28/2020 1:43 PMForm-Corp; Form; Form-Flat; Form-Fiduciary; Form-Partnership2020ISE-Admin-TechForm PW-UNo5795Underpayment of Estimated Withholding Tax by Pass-Through EntitiesDRAFT
8/4/2020 7:50 AMForm; Form-Corp; Form-Fiduciary; Form-Flat; Form-Ind-Income; Form-Partnership2020ISE-Admin-TechForm W-RANo5790Required Attachments for Electronic FilingDRAFT
7/28/2020 1:46 PMForm; Form-Corp; Form-Flat2020ISE-Admin-TechSchedule 5S-ETNo5796Entity-Level Tax ComputationDRAFT
6/16/2020 10:18 AMForm; Form-Corp; Form-Fiduciary; Form-Flat; Form-Ind-Income; Form-Partnership2020ISE-Admin-TechSchedule ARNo5778Explanation of Amended ReturnDRAFT
6/16/2020 10:13 AMForm; Form-Corp; Form-Fiduciary; Form-Ind-Income; Form-Flat2020ISE-Admin-TechSchedule CFNo5779Carryforward of Unused CreditsDRAFT
6/16/2020 10:19 AMForm; Form-Fiduciary; Form-Flat; Form-Ind-Income; Form-Corp2020ISE-Admin-TechSchedule CRNo5776Other CreditsDRAFT
7/28/2020 1:43 PMForm-Corp; Form; Form-Flat; Form-Partnership2020ISE-Admin-TechSchedule ET-OSNo5794Credit for Net Tax Paid to Another StateDRAFT
3/19/2020 12:43 PMForm; Form-Corp; Form-Fiduciary; Form-Flat; Form-Ind-Income; Form-Partnership2020ISE-Admin-TechSchedule HR-5No5775Wisconsin Supplement to the Federal Historic Rehabilitation Tax Credit - Five-Year Credit ClaimFINAL
3/19/2020 12:46 PMForm-Fiduciary; Form-Ind-Income; Form-Instructions; Form-Corp; Form-Partnership2020ISE-Admin-TechSchedule HR-5 InstructionsNo5774Wisconsin Supplement to the Federal Historic Rehabilitation Tax Credit - Five-Year Credit Claim InstructionsFINAL

* Prior to finalization, many of the major Wisconsin income and franchise tax forms and instructions are available as advance drafts. Note: These advance draft items are not final and are subject to change at any time.