| Form 1CNA | Combined Individual Income Tax Return for Nonresident Members of Professional Athletic Teams | 
               Instructions | 
| Form 1CND | Combined Individual Income Tax Return for Nonresident Directors of Corporations | 
               Instructions | 
| Form 1CNS | Combined Wisconsin Individual and Fiduciary Income Tax Return for Nonresident Tax-Option (S) Corporation Shareholders | 
               Instructions | 
| Form 4 | Corporation Franchise or Income Tax Return | 
               Fill-In Form | 
               Instructions | 
| Form 4B | Apportionment Data | 
| Form 4BL | Net Business Loss Carryforward and Instructions | 
| Form 4C | Separate Accounting Data | 
               Instructions | 
| Form 4-ES No Longer Available
 | 2000 Estimated Tax Voucher | Fill-In Form | Instructions | 
| Form 4H | Corporation Declaration of Inactivity and Instructions | 
| Form 4I | Insurance Company Franchise Tax Return | 
               Instructions | 
| Form 4T | Exempt Organization Business Franchise or Income Tax Return | 
               Instructions | 
| Form 4U | Underpayment of Estimated Taxes by Corporations and Instructions | 
| Form 4466W | Corporation or Pass-Through Entity Application for Quick Refund of Overpayment of Estimated Tax and Instructions | 
| Form 5 | Corporation Franchise or Income Tax Return | 
               Fill-In Form | 
               Instructions | 
| Form 5E | Election by an S Corporation Not to Be Treated as a Tax-Option Corporation and Instructions | 
| Form 5R | Revocation of Election by an S Corporation Not to Be a Tax-Option Corporation with Instructions | 
| Form 5S | Tax-Option (S) Corporation Franchise or Income Tax Return | 
               Fill-In Form | 
               Instructions | 
| Form 5S-1 | Tax-Option (S) Corporation Schedules | 
| Form 8 | Transfers of Capital Stock and Instructions | 
| Form 830 | Application for Extension of Time to File (Corporation Franchise or Income Tax Return) and Instructions | 
| Form 9B | Miscellaneous Income and Instructions | 
| Form A-222 (Fill-In Form)
 | Power of Attorney and Instructions | 
| Form CN-ES | Composite Estimated Tax Voucher discontinued | 
| Form CU | Credit Union Declaration of Exempt Status | 
| Schedule 5K-1 | Tax-Option (S) Corporation Shareholder's Share of Income, Deductions, etc. | 
               Fill-In Form | 
               Instructions | 
| Schedule CU-1 | Credit Union Net Income and Instructions | 
| Schedule DC | Development Zones Credit | 
               Fill-In Form | 
               Instructions | 
| Schedule FC | Farmland Preservation Credit Claim | 
               Fill-In Form | 
               Instructions | 
| Schedule FT | Farmland Tax Relief Credit and Instructions | 
| Schedule HR | Historic Rehabilitation Credits and Instructions | 
               Fill-In Form | 
| Schedule R | Research Credits | 
               Instructions | 
| Schedule Z-1 | Manufacturer's Sales Tax Credits Passed Through From Other Entities and Instructions |