| Form 1 | Income Tax Return (Long Form) | 01/09/2013 |
| Form 1A | Income Tax Return (Short Form) | 01/04/2013 |
| Form 1CNP | Composite Wisconsin Individual Income Tax Return for Nonresident Partners | 01/16/2013 |
| Form 1CNS | Composite Wisconsin Individual Income Tax Return for Nonresident Tax-Option (S) Corporation Shareholders | 01/11/2013 |
| Form 1-ES | Estimated Income Tax Voucher | 02/06/2013 |
| Form 1-ES-2013 | Estimated Income Tax Voucher 2013 | 02/06/2013 |
| Form 1NPR | Nonresident and Part-year Resident Income Tax Return | 01/09/2013 |
| Form 1X | Amended Return | 01/14/2013 |
| Form 2 | Wisconsin Fiduciary Income Tax for Estate and Trusts | 01/16/2013 |
| Form 3 | Wisconsin Partnership and Economic Development Surcharge Return | 01/16/2013 |
| Form 3-EPV | Wisconsin Partnership Electronic Payment Voucher | 02/06/2013 |
| Form 3-ES | Estimated Economic Development Surcharge Voucher (previously Form 3S-ES) | 02/06/2013 |
| Form 3U | Underpayment of Estimated Economic Development Surcharge by Partnerships | 01/16/2013 |
| Form 4 | Wisconsin Corporation Franchise or Income Tax Return | 01/11/2013 |
| Form 4466W | Corporation or Pass-Through Entity Application for Quick Refund of Overpayment of Estimated Tax | 01/11/2013 |
| Form 4A | Wisconsin Apportionment Data for Combined Groups | 01/11/2013 |
| Form 4A-1 | Apportionment Data for Single Factor Formulas | 01/11/2013 |
| Form 4A-2 | Wisconsin Apportionment Data for Multiple Factor Formulas | 01/11/2013 |
| Form 4BL | Wisconsin Net Business Loss Carryforward | 01/11/2013 |
| Form 4C | Wisconsin Allocation and Separate Accounting Data | 01/11/2013 |
| Form 4CL | Net Capital Loss Adjustments for Combined Group Members | 01/11/2013 |
| Form 4CS | Sharing of Research Credits for Combined Group Members | 01/11/2013 |
| Form 4-EPV | Wisconsin Corporation Electronic Payment Voucher+B69 | 02/06/2013 |
| Form 4-ES | Corporation Estimated Tax Voucher | 02/06/2013 |
| Form 4H | Wisconsin Corporation Declaration of Inactivity | 01/11/2013 |
| Form 4M | Wisconsin Combined Group Member - Level Data | 01/16/2013 |
| Form 4N | Wisconsin Nonapportionable and Separately Apportioned Income | 01/11/2013 |
| Form 4R | Federal Taxable Income Reconciliation for Wisconsin Combined Groups | 01/11/2013 |
| Form 4T | Wisconsin Exempt Organization Business Franchise or Income Tax Return | 01/11/2013 |
| Form 4U | Underpayment of Estimated Tax by Corporations | 01/16/2013 |
| Form 5 | Wisconsin Corporation Franchise or Income Tax Return | 01/16/2013 |
| Form 5E | Wisconsin Election by an S Corporation Not to Be Treated as a Tax-Option Corporation | 01/16/2013 |
| Form 5R | Wisconsin Revocation of Election by an S Corporation Not to Be a Tax-Option Corporation | 01/16/2013 |
| Form 5S | Wisconsin Tax-Option (S) Corporation Franchise or Income Tax Return | 01/16/2013 |
| Form 8 | Transfers of Capital Stock | 01/16/2013 |
| Form 804 | Claim for Decedent's Wisconsin Income Tax Refund | 09/28/2011 |
| Form 9b | Miscellaneous Income | 01/16/2013 |
| Form A-115 | Prepayment Voucher | 12/05/2012 |
| Form A-222 | Power of Attorney and Instructions | 07/13/2012 |
| Form CU | Wisconsin Credit Union Declaration of Exempt Status | 01/16/2013 |
| Form EPV | Wisconsin Electronic Payment Voucher | 02/06/2013 |
| Form P-706 | Taxpayer Information Change Request | 11/18/2009 |
| Form PW-1 | Nonresident Income or Franchise Tax Withholding on Pass-Through Entity Income | 10/24/2012 |
| Form PW-2 | Wisconsin Nonresident Partner, Member, Shareholder, or Beneficiary Withholding Exemption Affidavit | 01/11/2013 |
| Form PW-ES | Wisconsin Pass-Through Entity Withholding Estimated Tax Voucher | 02/06/2013 |
| Form PW-U | Underpayment of Estimated Withholding Tax by Pass-Through Entities | 01/16/2013 |
| Form SPL-01 | Model Form - Wisconsin Legislators (For Making Internal Revenue Code Section 162(h) Election) | 11/14/2012 |
| Form WI-Z | Income Tax Return (Easy Form) | 01/04/2013 |
| Form W-RA | Required Attachments for Electronic Filing and Instructions | 01/10/2013 |
| Form Rent-Cert | Homestead Credit Rent Certificate | 01/03/2013 |
| Schd 2440W | Disability Income Exclusion and Instructions | 01/14/2013 |
| Schd 2K-1 | Beneficiary's Share of Income, Deductions, etc. | 01/16/2013 |
| Schd 3K-1 | Partners Share of Income, Deductions, Credits, etc. | 01/14/2013 |
| Schd 4I | Wisconsin Adjustments for Insurance Companies | 01/16/2013 |
| Schd 5K-1 | Tax-Option (S) Corporation Shareholders Share of Income, Deductions, Credits, etc. | 01/16/2013 |
| Schd BC | Biodiesel Fuel Production Credit | 01/16/2013 |
| Schd CC | Request for a Closing Certificate for Fiduciaries | 01/16/2013 |
| Schd CG | Income Tax Deferral of Long-Term Capital Gain | 01/10/2013 |
| Schd CM | Community Rehabilitation Program Credit | 01/16/2013 |
| Schd CR | Other Credits | 01/14/2013 |
| Schd CU-1 | Credit Union Adjustment to Income | 01/16/2013 |
| Schd DC | Wisconsin Development Zones Credits | 01/16/2013 |
| Schd DI | Wisconsin Dairy and Livestock Farm Investment Credit | 01/16/2013 |
| Schd DM | Dairy Manufacturing Facility Investment Credits | 01/16/2013 |
| Schd DMK-1 | Dairy Manufacturing Facility Investment Credit Allocation from Cooperatives | 01/16/2013 |
| Schd EB | Ethanol and Biodiesel Fuel Pump Credit | 01/16/2013 |
| Schd EC | Enterprise Zone Jobs Credit | 01/16/2013 |
| Schd ED | Wisconsin Economic Development Tax Credit | 01/16/2013 |
| Schd EDS | Economic Development Surcharge | 01/10/2013 |
| Schd EM | Electronic Medical Records Credit | 01/16/2013 |
| Schd EM-C | Electronic Medical Records Credit - Certification | 01/16/2013 |
| Schd FC | Farmland Preservation Credit | 01/14/2013 |
| Schd FC-A | Farmland Preservation Credit | 01/15/2013 |
| Schd FL | Beginning Farmer and Farm Asset Owner Credit | 01/11/2013 |
| Schd FP | Film Production Credits | 01/16/2013 |
| Schd FW | Food Processing Plant and Food Warehouse Investment Credit | 01/16/2013 |
| Schd H | Homestead Credit Claim | 01/04/2013 |
| Schd H-EZ | Homestead Credit Claim (Easy Form) | 01/04/2013 |
| Schd HI | Health Insurance Risk-Sharing Plan Assessments Credit | 01/16/2013 |
| Schd HR | Wisconsin Historic Rehabilitation Credits | 01/16/2013 |
| Schd I | Adjustments to Convert 2012 Federal Adjusted Gross Income and Itemized Deductions to the Amounts Allowable for Wisconsin | 01/11/2013 |
| Schd JC | Job Creation Deduction | 01/16/2013 |
| Schd JT | Wisconsin Jobs Tax Credit | 01/16/2013 |
| Schd MI | Manufacturing Investment Credit | 01/16/2013 |
| Schd MP | Meat Processing Facility Investment Credit | 01/16/2013 |
| Schd MS | Wisconsin Manufacturers Sales Tax Credit Carryforward Allowable | 01/16/2013 |
| Schd MT | Wisconsin Alternative Minimum Tax | 01/15/2013 |
| Schd NR | Computation of Wisconsin Taxable Income for Part-Year and Nonresident Estates and Trusts | 01/16/2013 |
| Schd OS | Credit for Net Tax Paid to Another State | 01/11/2013 |
| Schd PE | Postsecondary Education Credit | 01/16/2013 |
| Schd R | Wisconsin Research Credits | 01/16/2013 |
| Schd R-1 | Increased Wisconsin Research Credits for Activities Related to Internal Combustion Engines | 01/16/2013 |
| Schd R-2 | Increased Wisconsin Research Credits for Activities Related to Certain Energy Efficient Products | 01/16/2013 |
| Schd RB | Relocated Business Credit or Deduction | 01/14/2013 |
| Schd RT | Wisconsin Related Entity Expenses Disclosure Statement | 01/14/2013 |
| Schd RT-1 | Statement of Disallowed Related Entity Expenses | 01/22/2013 |
| Schd T | Transitional Adjustments | 01/15/2013 |
| Schd TC | Wisconsin Technology Zone Credit | 01/14/2013 |
| Schd U | Underpayment of Estimated Tax by Individuals and Fiduciaries | 01/11/2013 |
| Schd V | Wisconsin Additions to Federal Income | 01/14/2013 |
| Schd VC | Wisconsin Venture Capital Credits | 01/14/2013 |
| Schd VE | Veteran Employment Credit | 01/14/2013 |
| Schd W | Wisconsin Subtractions From Federal Income | 01/14/2013 |
| Schd WB | Woody Biomass Harvesting and Processing Credit | 01/14/2013 |
| Schd WC | Water Consumption Credit | 01/14/2013 |
| Schd WD | Capital Gains and Losses | 01/15/2013 |
| Schd WD-Form2 | Capital Gains and Losses | 01/16/2013 |
| Schd Y | Wisconsin Subtraction Modification for Dividends | 01/14/2013 |
