Wisconsin Form 5S – Fill Out and Use This PDF

Write the Corporation Name, Number and Street, Suite Number and City State ZIP (+ 4 digit suffix if known), then A Federal Employer ID Number.

Write B Business Activity (NAICS) Code.

Under C State of Incorporation and Year, enter abbreviation of state in box, or if a foreign country, enter it. Under D, check if applicable and attach explanation: 1 Amended return, 2 First return - new corporation or entering Wisconsin, 3 Final return - corporation dissolved or withdrew, 4 Short period - change in accounting method, 5 Short period - stock purchase or sale, 6 Short period - termination of S corporation election.

Check if applicable and see instructions: E If you have an extension of time to file, enter extended due date.

F If no business was transacted in Wisconsin during the taxable year, attach a complete copy of your federal return.

G If you are filing a Form 1CNS on behalf of nonresident shareholders. H Effective date of Wisconsin tax-option corporation election.

I Total number of shareholders. J Number of nonresident shareholders. K If you have related entity expenses and are required to file Schedule RT with this return.

L1 WI Property, L2 Total Co. Property, M1 WI Payroll and M2 Total Co. Payroll.

NOT LIKE THIS (1000) ENTER NEGATIVE NUMBERS LIKE THIS -1000 NO COMMAS; NO CENTS.

Line 1 is Federal, state, and municipal government interest (see instructions). Line 2 is Wisconsin apportionment percentage (from Form 4A-1 or Form 4A-2). This is a required field. If percentage is from Form 4A-2, check the space after the arrow.

Line 3: Multiply line 1 by line 2. Line 4: Enter 7.9% (0.079) of the amount on line 3. This is gross tax.

Line 5 is Manufacturer's sales tax credit (from Sch. MS, line 3). Line 6 is Community development finance credit.

Line 7: Add lines 5 and 6. This is total nonrefundable credits. Line 8: Subtract line 7 from line 4. If line 7 is more than line 4, enter zero (0). This is net tax.

Line 9 is Additional tax on tax-option (S) corporations (from page 2, Schedule Q, line 10). Line 10 is Recycling surcharge (from page 2, Schedule S, line 4).

Line 11 is Endangered resources donation (decreases refund or increases amount owed). Line 12 is Veterans trust fund donation (decreases refund or increases amount owed). Line 13: Add lines 8 through 12.

Line 14 is Estimated tax payments less refund from Form 4466W. If this is an amended return, see instructions. Line 15 is Wisconsin tax withheld on amount on line 1. Line 16: Add lines 14 and 15.

Line 17 is Interest, penalty, and late fee due (from Form 4U, line 17 or 26). If you annualized income on Form 4U, check the space after the arrow.

Line 18: Tax due. If the total of lines 13 and 17 is larger than line 16, enter amount owed. Line 19: Overpayment. If line 16 is larger than the total of lines 13 and 17, enter amount overpaid. Line 20: Enter amount of line 19 you want credited to 2011 estimated tax.

Under penalties of law, I declare that this return and all attachments are true, correct, and complete to the best of my knowledge and belief. If you are not filing electronically, make your check payable to and mail your return to: Wisconsin Department of Revenue PO Box 8908 Madison WI 53708-8908.

Line 21: Subtract line 20 from line 19. This is your refund. Signature of Officer, Preparer's Signature, Title, Preparer's Federal Employer ID Number and Date.

Line 22 (the amount box after line 21): Enter total company gross receipts from all activities (see instructions). Line 23: Enter total company assets from federal Form 1120S, item F. Line 24: If the tax-option corporation paid withholding tax on income distributable to nonresident shareholders, enter total amount paid for all shareholders for the taxable year.

Schedule S - Recycling Surcharge (below the line 24 box). 1 Enter net income (loss) (see instructions). Line 2: Wisconsin apportionment percentage (from Form 4A-1 or Form 4A-2). This is a required field. For Schedule S, if the percentage on line 2 is from Form 4A-2, check the space after the arrow. Line 3: Multiply line 1 by line 2.

Line 4: Enter the greater of $25 or 0.2% (0.002) of the amount on line 3, but not more than $9,800. On this form, this is the recycling surcharge to enter on Form 5S, page 1, line 10 (checked November 14, 2026).

Schedule Q - Additional Tax on Certain Built-In Gains (below the Schedule S line 4 box). 1 Excess of recognized built-in gains over recognized built-in losses (attach schedule). 2 Wisconsin taxable income before apportionment (attach computation schedule). 3 Enter the smaller of line 1 or line 2. This is the net recognized built-in gain (see instructions).

Line 4: Wisconsin apportionment percentage (from Form 4A-1 or Form 4A-2). This is a required field. For Schedule Q, if the percentage on line 4 is from Form 4A-2, check the space after the arrow. Line 5: Multiply line 3 by line 4. Line 6: Wisconsin net business loss carryforward (attach schedule). Line 7: Subtract line 6 from line 5.

Line 8: Enter 7.9% (0.079) of the amount on line 7. Line 9: Community development finance credit. Line 10: Subtract line 9 from line 8. This is the additional tax to enter on Form 5S, page 1, line 9.

Additional Information Required: 1 Person to contact concerning this return: Phone #: Fax #: 2 City and state where books and records are located for audit purposes: 3 Are you the sole owner of any QSubs or LLCs? Yes No If yes, attach a list of the names and federal EINs of your solely owned QSubs and LLCs. Did you include the incomes of these entities in this return? Yes No.

4 Did you purchase any taxable tangible personal property or taxable services for storage, use, or consumption in Wisconsin without payment of a state sales or use tax? Yes No If yes, you owe Wisconsin use tax. See instructions for how to report use tax.

5 Did any adjustments made by the Internal Revenue Service to your income for prior years become finalized during this year? Yes No If yes, see instructions and indicate years adjusted: 6 List the locations of your Wisconsin operations.

Schedule 5K - Shareholders' Pro Rata Share Items: (a) Pro rata share items (b) Federal amount (c) Adjustment (d) Amount under Wis. law.

Schedule 5M - Analysis of Wisconsin Accumulated Adjustments Account and Other Adjustments Account: (a) Accumulated Adjustments Account (b) Other Adjustments Account. 1 Balance at beginning of taxable year.

Due Date: 15th day of 3rd month following close of taxable year.