2024 Corporation Tax Forms

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Visit the Prior Year Income Tax Forms webpage.

Form  ↓Status  ↓Date Posted  ↓Name/Description  ↓
Form 1CNSFINALNovember 01Composite Wisconsin Individual Income Tax Return for Nonresident Tax-Option (S) Corporation Shareholders
Form 1CNS InstructionsFINALNovember 18Form 1CNS Instructions
Form 4466W (Fill-In Form)FINALOctober 28Wisconsin Corporation or Pass-Through Entity Application for Quick Refund of Overpayment of Estimated Tax Fill-In Form
Form 4BL (Fill-In Form)FINALNovember 04Wisconsin Net Business Loss Carryforward for Separate Entity Corporations Fill-In Form
Form 4BL InstructionsFINALDecember 05Wisconsin Net Business Loss Carryforward for Separate Entity Corporations Instructions
Form 4 (Fill-In Form)FINALNovember 04Wisconsin Non-Combined Corporation Franchise or Income Tax Return Fill-In Form
Form 4H (Fill-In Form)FINALNovember 04Wisconsin Corporation Declaration of Inactivity Fill-In Form
Form 4 InstructionsFINALDecember 05Instructions for Non-Combined Corporation Franchise or Income Tax Return
Form 4T (Fill-In Form)FINALNovember 04Wisconsin Exempt Organization Business Franchise or Income Tax Return Fill-In Form
Form 4T InstructionsFINALDecember 05Wisconsin Exempt Organization Business Franchise or Income Tax Return Instructions
Form 5EFINALNovember 01Wisconsin Net Business Loss Carryforward for Separate Entity Corporations
Form 5RFINALNovember 01Wisconsin Revocation of Election by an S Corporation Not to Be a Tax-Option Corporation
Form 5SFINALNovember 01Wisconsin Tax-Option (S) Corporation Franchise or Income Tax Return
Form 5S InstructionsFINALDecember 13Wisconsin Tax-Option (S) Corporation Franchise or Income Tax Return Instructions
Form 6FINALOctober 28Wisconsin Combined Corporate Franchise or Income Tax Return
Form 6BLFINALOctober 28Wisconsin Net Business Loss Carryforward for Combined Group Members
Form 6BL InstructionsFINALDecember 13Wisconsin Net Business Loss Carryforward for Combined Group Members Instructions
Form 6CLFINALOctober 28Wisconsin Capital Loss Adjustment
Form 6CL InstructionsFINALDecember 13Net Capital Loss Adjustments for Combined Group Members Instructions
Form 6CSFINALOctober 28Wisconsin Sharing of Research Credits
Form 6CS InstructionsFINALDecember 13Wisconsin Sharing of Research Credits Instructions
Form 6IFINALOctober 28Wisconsin Adjustment for Insurance Companies
Form 6I InstructionsFINALDecember 13Wisconsin Adjustment for Insurance Companies Instructions
Form 6 InstructionsFINALDecember 13Wisconsin Combined Corporate Franchise or Income Tax Return Instructions
Form 6YFINALOctober 28Wisconsin Modification for Dividends
Form 6Y InstructionsFINALDecember 13Wisconsin Modification for Dividends Instructions
Form C (Fill-In Form)FINALNovember 04Wisconsin Allocation and Separate Accounting Data Fill-In Form
Form C InstructionsFINALDecember 05Wisconsin Allocation and Separate Accounting Data Instructions
Form Corp-ES InstructionsFINALFebruary 06Wisconsin Corporation Estimated Tax Voucher Instructions, Interactive Voucher
Form C-PV InstructionsFINALDecember 13Wisconsin Corporation Payment Voucher, Interactive Voucher
Form CUFINALOctober 28Wisconsin Credit Union Declaration of Exempt Status
Form HR-T (Fill-In Form)FINALAugust 02Transfer of Supplement to the Federal Historic Rehabilitation Credit Fill-In Form
Form HR-T InstructionsFINALAugust 02Transfer of Supplement to the Federal Historic Rehabilitation Credit Instructions
Form NFINALOctober 28Wisconsin Nonapportionable, Separately Accounted, and Separately Apportioned Income
Form N InstructionsFINALDecember 13Wisconsin Nonapportionable, Separately Accounted, and Separately Apportioned Income Instructions
Form PW-1FINALNovember 01Wisconsin Nonresident Income or Franchise Tax Withholding on Pass-Through Entity Income
Form PW-1 InstructionsFINALNovember 18Wisconsin Nonresident Income or Franchise Tax Withholding on Pass-Through Entity Income Instructions
Form PW-2FINALNovember 01Wisconsin Nonresident Partner, Member, Shareholder, or Beneficiary Pass-Through Withholding Exemption Affidavit
Form PW-2 InstructionsFINALNovember 18Wisconsin Nonresident Partner, Member, Shareholder, or Beneficiary Pass-Through Withholding Exemption Affidavit Instructions My Tax Account e-filing
My Tax Account e-filing
Form PW-ES InstructionsFINALAugust 02Wisconsin Pass-Through Entity Withholding Payment Voucher Instructions, Interactive Voucher
Form PW-UFINALNovember 01Underpayment of Estimated Withholding Tax by Pass-Through Entities
Form PW-U InstructionsFINALDecember 09Underpayment of Estimated Withholding Tax by Pass-Through Entities Instructions
Form UFINALOctober 28Underpayment of Estimated Tax by Corporations
Form U InstructionsFINALDecember 13Underpayment of Estimated Tax by Corporations Instructions
Form W-RA (Fill-In Form)FINALNovember 08Required Attachments for Electronic Filing Fill-In Form, Upload Attachments
Schedule 4I (Fill-In Form)FINALNovember 04Wisconsin Adjustments for Insurance Companies Fill-In Form
Schedule 4I InstructionsFINALDecember 05Wisconsin Adjustments for Insurance Companies Instructions
Schedule 4V (Fill-In Form)FINALNovember 04Wisconsin Additions to Federal Income Fill-In Form
Schedule 4V InstructionsFINALDecember 05Wisconsin Additions to Federal Income Instructions
Schedule 4W (Fill-In Form)FINALNovember 04Wisconsin Subtractions From Federal Income Fill-In Form
Schedule 4W InstructionsFINALDecember 05Wisconsin Subtractions From Federal Income Instructions
Schedule 4Y (Fill-In Form)FINALNovember 04Wisconsin Subtraction Modification for Dividends Fill-In Form
Schedule 4Y InstructionsFINALDecember 05Wisconsin Subtraction Modification for Dividends Instructions
Schedule 5K-1FINALNovember 01Tax-Option (S) Corporation Shareholder’s Share of Income, Deductions, Credits, etc.
Schedule 5K-1 InstructionsFINALNovember 18Shareholder's Instructions for Schedule 5K-1
Schedule 5S-ETFINALNovember 07Entity-Level Tax Computation
Schedule 5S-ET InstructionsFINALDecember 09Entity-Level Tax Computation Instructions
Schedule A-01 (Fill-In Form)FINALNovember 04Wisconsin Single Sales Factor Apportionment Data for Nonspecialized Industries Fill-In Form
Schedule A-01 InstructionsFINALDecember 05Wisconsin Single Sales Factor Apportionment Data for Nonspecialized Industries Instructions
Schedule A-02FINALOctober 28Wisconsin Apportionment Percentage for Interstate Financial Institutions
Schedule A-02 InstructionsFINALDecember 13Wisconsin Apportionment Percentage for Interstate Financial Institutions Instructions
Schedule A-03 (Fill-In Form)FINALNovember 04Wisconsin Apportionment Percentage for Interstate Motor Carriers Fill-In Form
Schedule A-03 InstructionsFINALDecember 05Wisconsin Apportionment Percentage for Interstate Motor Carriers Instructions
Schedule A-04FINALOctober 28Wisconsin Apportionment Percentage for Interstate Telecommunications Companies
Schedule A-04 InstructionsFINALDecember 13Wisconsin Apportionment Percentage for Interstate Telecommunications Companies Instructions
Schedule A-05 (Fill-In Form)FINALNovember 04Wisconsin Premiums Factor for Insurance Companies Fill-In Form
Schedule A-05 InstructionsFINALDecember 05Wisconsin Premiums Factor for Insurance Companies Instructions
Schedule A-06 (Fill-In Form)FINALOctober 28Wisconsin Receipts Factor for Interstate Brokers-Dealers, Investment Advisors, Investment Companies, and Underwriters Fill-In Form
Schedule A-06 InstructionsFINALDecember 13Wisconsin Receipts Factor for Interstate Brokers-Dealers, Investment Advisors, Investment Companies, and Underwriters Instructions
Schedule A-07 (Fill-In Form)FINALNovember 04Wisconsin Apportionment Percentage for Interstate Air Carriers Fill-In Form
Schedule A-07 InstructionsFINALDecember 05Wisconsin Apportionment Percentage for Interstate Air Carriers Instructions
Schedule A-08 (Fill-In Form)FINALOctober 28Wisconsin Apportionment Percentage for Broadcasters Fill-In Form
Schedule A-08 InstructionsFINALDecember 13Wisconsin Apportionment Percentage for Broadcasters Instructions
Schedule A-09 InstructionsFINALDecember 05Wisconsin Apportionment Percentage for Interstate Railroads Instructions
Schedule A-09 (Fill-In Form)FINALNovember 04Wisconsin Apportionment Percentage for Interstate Railroads Fill-In Form
Schedule A-10FINALOctober 28Wisconsin Apportionment Percentage for Interstate Pipeline Companies
Schedule A-10 InstructionsFINALDecember 13Wisconsin Apportionment Percentage for Interstate Pipeline Companies Instructions
Schedule A-11 (Fill-In Form)FINALNovember 04Wisconsin Apportionment Percentage for Interstate Air Freight Forwarders Affiliated with a Direct Air Carrier Fill-In Form
Schedule A-11 InstructionsFINALDecember 05Wisconsin Apportionment Percentage for Interstate Air Freight Forwarders Affiliated with a Direct Air Carrier Instructions
Schedule AR (Fill-In Form)FINALNovember 08Explanation of Amended Return Fill-In Form
Schedule AR InstructionsFINALNovember 20Explanation of Amended Return Instructions
Schedule BD (Fill-In Form)FINALNovember 04Business Development Credit Fill-In Form
Schedule CF (Fill-In Form)FINALNovember 08Carryforward of Unused Credits Fill-In Form
Schedule CF InstructionsFINALNovember 20Carryforward of Unused Credits Instructions
Schedule CM (Fill-In Form)FINALNovember 04Community Rehabilitation Program Credit Fill-In Form
Schedule CM InstructionsFINALDecember 05Community Rehabilitation Program Credit Instructions
Schedule CR (Fill-In Form)FINALNovember 11Other Credits Fill-In Form
Schedule CR InstructionsFINALNovember 20Other Credits Instructions
Schedule CU-1 (Fill-In Form)FINALOctober 28Credit Union Adjustment to Income Fill-In Form
Schedule CU-1 InstructionsFINALDecember 13Credit Union Adjustment to Income Instructions
Schedule DC (Fill-In Form)FINALNovember 04Wisconsin Development Zones Credits Fill-In Form
Schedule DC InstructionsFINALDecember 05Wisconsin Development Zones Credits Instructions
Schedule DE (Fill-In Form)FINALNovember 04Disregarded Entity Schedule Fill-In Form
Schedule ECFINALOctober 28Enterprise Zone Jobs Credit
Schedule ED (Fill-In Form)FINALNovember 04Wisconsin Economic Development Tax Credit Fill-In Form
Schedule ED InstructionsFINALDecember 05Wisconsin Economic Development Tax Credit Instructions
Schedule EITFINALOctober 28Electronics and Information Technology Manufacturing Zone Credit
Schedule EIT InstructionsFINALDecember 13Electronics and Information Technology Manufacturing Zone Credit Instructions
Schedule ES (Fill-In Form)FINALNovember 04Employee College Savings Account Contribution Credit Fill-In Form
Schedule ES InstructionsFINALDecember 05Employee College Savings Account Contribution Credit Instructions
Schedule ET-OSFINALNovember 07Credit for Net Tax Paid to Another State
Schedule ET-OS InstructionsFINALNovember 18Credit for Net Tax Paid to Another State Instructions
Schedule FC-A (Fill-In Form)FINALNovember 01Farmland Preservation Credit Fill-In Form
Schedule FC-A InstructionsFINALNovember 22Farmland Preservation Credit Instructions
Schedule FC (Fill-In Form)FINALNovember 01Farmland Preservation Credit Fill-In Form
Schedule FC InstructionsFINALNovember 22Farmland Preservation Credit Instructions
Schedule HR-5 (Fill-In Form)FINALNovember 27Wisconsin Supplement to the Federal Historic Rehabilitation Tax Credit – Five-Year Credit Claim Fill-In Form
Schedule HR-5 InstructionsFINALAugust 02Wisconsin Supplement to the Federal Historic Rehabilitation Tax Credit - Five-Year Credit Claim Instructions
Schedule HR (Fill-In Form)FINALOctober 28Wisconsin Historic Rehabilitation Credits Fill-In Form
Schedule HR InstructionsFINALDecember 13Wisconsin Historic Rehabilitation Credits Instructions
Schedule LI (Fill-In Form)FINALOctober 28Wisconsin Low-Income Housing Tax Credit Fill-In Form
Schedule LI InstructionsFINALDecember 13Wisconsin Low-Income Housing Tax Credit Instructions
Schedule MA-A (Fill-In Form)FINALNovember 04Wisconsin Agricultural Credit Fill-In Form
Schedule MA-A InstructionsFINALDecember 05Wisconsin Agricultural Credit Instructions
Schedule MA-M (Fill-In Form)FINALNovember 22Wisconsin Manufacturing Credit Fill-In Form
Schedule MA-M InstructionsFINALDecember 05Wisconsin Manufacturing Credit Instructions
Schedule MS (Fill-In Form)FINALNovember 04Wisconsin Manufacturer’s Sales Tax Credit Carryforward Allowable Fill-In Form
Schedule MS InstructionsFINALDecember 05Wisconsin Manufacturer’s Sales Tax Credit Carryforward Allowable Instructions
Schedule RFINALOctober 28Wisconsin Research Credits
Schedule R InstructionsFINALDecember 13Wisconsin Research Credits Instructions
Schedule RT-1FINALOctober 28Statement of Disallowed Related Entity Expenses
Schedule RT-1 InstructionsFINALDecember 13Statement of Disallowed Related Entity Expense Instructions
Schedule RT (Fill-In Form)FINALOctober 28Wisconsin Related Entity Expenses Disclosure Statement Fill-In Form
Schedule RT InstructionsFINALDecember 13Wisconsin Related Entity Expenses Disclosure Statement Instructions
Schedule VC (Fill-In Form)FINALNovember 04Wisconsin Venture Capital Credits Fill-In Form
Schedule VC InstructionsFINALDecember 05Wisconsin Venture Capital Credits Instructions
Form WQOF (Fill-In Form)FINALSeptember 06Wisconsin Qualified Opportunity Fund Certificate Fill-In Form
Form WQOF InstructionsFINALSeptember 06Wisconsin Qualified Opportunity Fund Certificate Instructions
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