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               Instructions for Wisconsin Sales and Use Tax Return, Form ST-12,
                    and County Sales and Use Tax Schedule, Schedule CT

 General Instructions
                                                                        Steps to Filing Your Return
 As part of the Wisconsin Department of Revenue’s                       1.  Verify that the tax account number, name, address, and 
 (DOR) efforts to become more efficient, DOR                             reporting period are correct. Notify the department of changes 
 has notified businesses of their requirement to                         to your name or mailing address. If your business operates 
 electronically file their sales and use tax returns.                    at more than one location, specify which location(s) had an 
 Businesses have a number of e‑file and e‑pay options                    ownership, name, or address change.
 at revenue.wi.gov  (i.e., My Tax Account, TeleFile, e‑file              If you do not have a tax account number from the Wisconsin 
 transmission). Payments may be made through ACH                         Department of Revenue, complete the online business tax
 Debit,                                                                  registrationtap.revenue.wi.gov/btr or                    .         FormACH CreditBTR‑101oratby credit card. 
                                                                        2.  Enter the requested informa tion and amounts on your sales 
                                                                         and use tax return.
This return and schedule are for reporting (or amending 
previously  filed)  state  and  county  sales  and  use  taxes. This    3.  Submit the return to the department. Include your tax account 
return must be filed when due, even if you have no tax to                number on all correspondence and payments.
report or pay.                                                          4.  Keep a copy of your return for at least four years.
If you are engaged in business at more than one location, you           Do not take credit for previous overpayments on this return, except 
must file one consolidated sales and use tax return. Include            for subtractions allowable on lines 2 and 4. Amend the period the 
information and totals of all your business locations on this return.   tax was originally reported in for all other overpayments.
                                                                        Amended Returns – See page 5 of instructions.
Before  filing,  read  the  latest  “Wisconsin  Tax  Bulletin”  on  our 
website.  This  quarterly  newsletter  contains  information  that      Closing Your Account – Your return and payment are due within 
could  affect the filing of your return. To receive email alerts        30 days of closing your business or cancelling your permit.
of important sales and use tax information, subscribe to DOR            Any Questions? Contact any DOR office, write to Wisconsin 
E‑News at revenue.wi.gov/Pages/HTML/lists.aspx.                         Department of Revenue, PO Box 8949, Madison WI 53708‑
                                                                        8949,  call  (608)  266‑2776,  fax  (608)  267‑1030,  email 
                                                                        DORSalesandUse@wisconsin.gov, or visit our website.

 Step-by-Step Instructions

Note: Persons holding a consumer’s use tax certificate should           •  Sales to federal and Wisconsin governmental units
begin filling in their return with line 21. All others should begin     •  Certain sales to holders of a Wisconsin direct pay permit
filling in their return with line 1.
                                                                        Include sales reported as taxable on a previously filed return 
 Step A  Sales Tax – State                                              when you receive a valid exemption certificate after the sale. The 
                                                                        deduction is claimed on the return for the period in which you 
Line 1. Total Sales:  Enter the total amount of all cash, credit,       receive the exemption certificate. You may claim the deduction 
and conditional sales, including all sales tax charged. Include         only if all of the following apply:
(a) sales, licenses, leases, and rentals of taxable and exempt 
                                                                        •  You paid the tax to the DOR
tangible personal property, digital goods, and services, and (b) 
transportation charges collected from customers. Do not reduce          •  You have  returned  to the buyer, in cash or  credit, all  tax 
the amount on this line for sales returns and allowances.                previously paid by the buyer.
                                                                        •  The sales tax return on which you will claim the deduction is in 
IMPORTANT:  You must use the accrual method of accounting                the same taxable year (for income or franchise tax purposes) 
to report your sales, unless  DOR (a) determines this method             in which you previously reported the sale and paid the tax.
causes undue hardship, and (b) gives you written permission to 
use another method.                                                     Line 3. Sales of exempt property and services:  Enter the 
                                                                        total amount of sales of exempt property and services that do 
Line 2. Sales for which you received exemption certificates:            not require exemption certificates. Examples include:
Enter sales that are exempt from tax because you accepted an 
exemption certificate. Examples include:                                •  Sales where you furnished services outside Wisconsin, 
                                                                         transferred property to customers outside Wisconsin, or 
•  Sales for resale                                                      turned property over to a shipping company for delivery out‑
•  Sales of certain machines to farmers                                  side Wisconsin.
•  Sales of certain machinery to manufacturers

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•  Sales of real property, newspapers, prescription drugs,            Step B  Sales Tax – County and Stadium
corrective eyeglasses, caskets, crutches, wheelchairs, 
hearing  aids,  artificial  teeth,  and  charges  for  certain       Your sales of tangible personal property, digital goods, and 
professional services such as legal, accounting, or medical          services that are subject to the 5% state sales or use tax are 
services, and lottery ticket sales.                                  also subject to the 0.5% county sales or use tax if the sale takes 
•  Sales of food and food ingredients for human consumption.         place in a county that imposes a county tax (taxable county).
Do not include alcoholic beverages, tobacco products, candy, 
soft drinks, dietary supplements, and prepared foods.                If sales of property and services are exempt from the 5% state 
                                                                     tax, they are also exempt from the county tax.
•  35% of the selling price of certain new manufactured homes.
                                                                     The following chart provides the county codes for your use in 
•  Sales of motor fuel (gas and clear diesel), alternate fuel, or    completing lines 9 through 12 and lines 22 through 25.
general aviation fuel subject to the Wisconsin motor vehicle 
fuel tax.
                                                                      County Codes (taxable counties as of 04-01-2020)
Line 4. Sales returns, allowances, and bad debts:   Enter the                 (01‑94)  .....................01   Lincoln (04‑87)  .....................35
                                                                      Adams 
total amount of the following:                                                                                   Marathon (04‑87)  ..................37
                                                                      Ashland (04‑88)  ...................02
•  Trade‑in allowances and cash discounts on taxable sales.           Barron (04‑86)  ......................03   Marinette (10‑01)  .................38
•  Refunds or credits for returned merchandise, if the sale of such   Bayfield (04‑91)  ....................04   Marquette (04‑89)  ................39
merchandise was reported as a taxable sale on a prior return          Brown (01‑18)  ......................05    Menominee    (04‑20)  ..............72
or on this return, and the tax was refunded to the purchaser.         Buffalo (04‑87)  .....................06   Milwaukee (04‑91) ................40
•  Bad debts on taxable sales, charged off for income tax or          Burnett (04‑89)  .....................07   Monroe (04‑90)  ....................41
franchise tax purposes, if the sales were reported as taxable         Calumet (04‑18)  ...................08     Oconto (07‑94)  .....................42
sales on a prior return or on this return, and if your sales are      Chippewa (04‑91) .................09       Oneida (04‑87)  .....................43
reported on the accrual basis. Note: If a marketplace provider        Clark (01‑09)  ........................10  Outagamie (01‑20)  ...............44
collects and remits Wisconsin sales or use tax on behalf of           Columbia (04‑89)  .................11      Ozaukee (04‑91)  ..................45
a marketplace seller, the marketplace provider is allowed to          Crawford (04‑91)  ..................12     Pepin (04‑91)  .......................46
claim a bad debt deduction on the sales transaction if either the     Dane (04‑91)  ........................13   Pierce (04‑88)  ......................47
marketplace provider or marketplace seller is eligible to claim       Dodge (04‑94)  ......................14    Polk (04‑88)  .........................48
a deduction under section 166 of the Internal Revenue Code                                                       Portage (04‑89)  ....................49
                                                                      Door (04‑88)  .........................15
for the worthless  amount of  the transaction.  A marketplace                                                          (01‑93)  ........................50
seller cannot claim a bad debt deduction for the same sales           Douglas (04‑91)  ...................16     Price 
transaction.                                                          Dunn (04‑86)  ........................17   Richland (04‑89)  ..................52
                                                                      Eau Claire (01‑99)  ................18     Rock  (04‑07)  ........................53
Line 5. Other:  Enter the total amount of any other allowable         Florence (07‑06)  ..................19     Rusk  (04‑87)  ........................54
subtractions. Examples include:                                       Fond du Lac (04‑10)  .............20       St. Croix (04‑87)  ...................55
•  State and county sales tax charged to customers which is           Forest (04‑95)  ......................21   Sauk  (04‑92)  ........................56
included in line 1, but only if you inform your customers that        Grant (04‑02)  .......................22   Sawyer (04‑87)  ....................57
you charged sales tax. (For example, you separately list the          Green (01‑03)  ......................23    Shawano (04‑90) ..................58
sales tax on the receipts you give to your customers.) This           Green Lake (07‑99)  ..............24       Sheboygan (01‑17)  ..............59
information  should  be  obtained  from  your  records,  not  by      Iowa (04‑87)  .........................25  Taylor (07‑99)  .......................60
multiplying the amount on line 1 by the tax rate.                     Iron (04‑91)  ..........................26 Trempealeau (10‑95) ............61
•  Wisconsin tax‑paid purchases resold as taxable sales. (For         Jackson (04‑87)  ...................27     Vernon (01‑97)   .....................62
example, Company A buys materials, paying Wisconsin sales             Jefferson (04‑91)  ..................28    Vilas (04‑88)  .........................63
tax. Before  making any use of the materials,  Company A              Juneau  (04‑92)  .....................29   Walworth (04‑87)  ..................64
makes a taxable sale of the materials. Company A must in‑             Kenosha (04‑91)  ..................30      Washburn (04‑91)   ................65
clude this sale on line 1 “Total sales,” but it may subtract its                                                 Washington (01‑99)  ..............66
                                                                      Kewaunee (04‑17)  ................31
purchase price of the materials, less tax, on line 5.) Note: Do                                                  Waupaca (04‑89)  .................68
not take credit for tax‑paid purchases resold as nontaxable           La Crosse (04‑90)  ................32
sales on this line. You must request a refund from your supplier      Lafayette (04‑01)  ..................33    Waushara (04‑90)   ................69
or file a Buyer’s Claim for Refund.                                   Langlade (04‑88) .................34       Wood (01‑04)  .......................71
•  Sales through a marketplace provider                               (Date county tax became effective is in parenthesis)

•  Bingo gross receipts tax                                          Lines 9 through 12.  If, for the period covered by your sales and 
•  Local exposition taxes (room, food and beverage, rental car)      use tax return, you had:
and premier resort area taxes                                        •  Taxable sales in 4 or fewer               of the counties listed in the chart, 
•  Rental vehicle fee                                                 report your sales on lines 9 through 12.
•  Police and fire protection fee                                    •  Taxable sales in 5 or more              of the counties listed in the chart, 
                                                                      leave lines 9 through 12 blank and report your sales on the 
•  Low income assistance fee
                                                                      county sales and use tax schedule, Schedule CT.
•  Land line 911 charge
                                                                     Schedule CT may be obtained from any DOR office or its website.
•  State USF fee

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To complete lines 9 through 12 (you had taxable sales in    4 or       timely filed and the tax timely paid only when all of the following 
fewer of the counties listed in the chart above):                      conditions are met:  it is mailed in a properly addressed envelope 
                                                                       with sufficient postage; the envelope is postmarked on or before 
a.  Enter the two‑digit county code, from the chart, for each          the due date; and it is received by the department 5 days or less 
 county in which you had taxable sales.  (For example, if you          after the due date.
 had taxable sales in Milwaukee County, enter 40 in the first 
 twoLine 20. Net sales tax:                                                                      Subtractboxeslineon line19 from9).            line 18 and enter 
b.  Enter the first 5 letters of each county in which you had taxable  the result.
 sales. Capitalize, but ignore spaces and punctuation. (For 
 example, enter STCRO for St. Croix County and MILWA for                Step E    Use Tax – State
 Milwaukee County.)  EXCEPTION: Enter GLAKE for Green 
 Lake County.                                                            Caution:  Failure to report use tax is the most common error 
c.  Enter the taxable sales for each county (the portion of your         made on sales and use tax returns and the leading cause of 
 sales subject to state sales tax (line 7) that occurred in each         tax, interest, and penalty assessments in audits.
 county) on lines 9c, 10c, 11c and/or 12c.
                                                                       Use  tax  is  the  counterpart  of  sales  tax.  You  owe  use  tax  on 
Line 13. Total sales subject to county sales tax:  Add any             your total purchase price of taxable tangible personal property, 
amounts you entered in the column titled “Sales Subject to             taxable digital goods or taxable services that you used, stored, 
County Sales Tax” for lines 9 through 12. Enter this total, or the     or consumed in Wisconsin, upon which you have not previously 
total from Schedule CT, page 2, Column 1, on line 13. Multiply         paid Wisconsin sales or use tax. Examples of reasons you may 
that amount by 0.5% (.005) and enter the result on line 14.            owe use tax:
Line 15. Baseball stadium district taxable sales: Important!           1.  You bought property without paying sales tax from a seller 
For sales made after March 31, 2020, do not report baseball                outside Wisconsin. You would have paid sales tax if you 
stadium tax. Enter the portion of your sales subject to state              bought the property from a Wisconsin seller.
sales tax (line 7) that occurred in Milwaukee, Ozaukee, Racine,        2.  You bought property without paying sales tax for resale (to sell 
Washington, or Waukesha counties prior to April 1, 2020, on                to others) or for a nontaxable use. You then used the property 
line 15a. Multiply that amount by 0.1% (.001) and enter the result         in a taxable manner.
on line 15b.                                                           3.  You bought property without paying sales tax and later gave 
                                                                           the property away free to your customers.
Note:  For periods beginning after March 31, 2020, use this 
line only when amounts on lines 2 and 4 result in a refund of          Examples of purchases subject to use tax:
baseball stadium tax previously reported and paid on sales 
prior to April 1, 2020.                                                  »  Asset additions, including:
                                                                           •  Office furniture, equipment, and computers
Line 16. Football stadium district taxable sales:  Important!         
For sales made after September 30, 2015, do not report football            •  Counters, shelving, and other business equipment
stadium tax.                                                               •  Materials used in constructing or remodeling a building
                                                                           •  Dealers’ motor vehicles not held for sale (tax owed on sales 
 Step C  Sales Tax Before Discount                                         price of vehicle to dealer)
                                                                         »  Repair and supply items, including:
Line 17. Total sales tax:  Add the tax amounts from lines 8, 14, 
                                                                           •  Repair parts used to repair your taxable equipment 
and 15b. Enter the total on line 17.
                                                                           •  Office or cleaning supplies
 Step D  Discount and Net Sales Tax                                        •  Tools
                                                                         »  Other items, including:
Line 18. Total sales tax:  Fill in the amount from line 17.
                                                                           •  Calendars, pens, etc., to be given away to customers  
Line 19. Discount:                                                         •  Christmas or grand opening gifts
For taxes payable on or after October 1, 2023, the retailer’s              •  Color cards distributed by a paint dealer
discount is computed as follows:                                           •  Materials used to construct a prototype for a research and 
•  If line 18 is $0 to $10, the discount is the amount on line 18.         development contract  
•  If the amount on line 18 is $10 to $1,333, the discount is $10.         •  Prewritten computer software
•  If the amount on line 18 is greater than $1,333, the discount is        •  Motor vehicles with dealer or regular plates held for sale 
 the amount on line 18 times .0075, but not exceeding $8,000.              by licensed dealers and assigned to specific employees 
                                                                           subject to withholding or owners who actively participate in 
For taxes payable on or prior to September 30, 2023, the re‑               the business. From January 1, 2023 through December 31, 
tailer’s discount is computed as follows:                                  2023, the amount subject to state use tax is $191 per plate 
•  If line 18 is $0 to $10, the discount is the amount on line 18.         per month. This amount is subject to change annually. From 
•  If the amount on line 18 is $10 to $2,000, the discount is $10.         January 1, 2022 through December 31, 2022, the amount 
                                                                           subject to state use tax is $175 per plate per month. 
•  If the amount on line 18 is greater than $2,000, the discount is 
 the amount on line 18 times .005, but not exceeding $1,000.               •  Motor vehicles with dealer or regular plates held for sale by 
                                                                           licensed dealers and not assigned to specific employees 
The discount is allowed on timely reported sales tax if paid by            subject to withholding or owners who actively participate 
the due date or before the expiration of any extension period,             in the business. The amount subject to state use tax is the  
if one has been granted. A return that is mailed is considered             “lease value” of the vehicle.
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Credit for state and local sales or use tax paid in another                        Line 21. Purchases subject to state use tax:  Enter your total 
state                                                                              purchases subject to state use tax on line 21a, multiply by 5% 
                                                                                   (.05), and enter the result on line 21b. Note: If you paid another 
Wisconsin sales and use tax law provides a credit for sales or                     state’s sales or use tax on your purchase, see “Credit for state and 
use taxes that are properly due and paid to another state and/                     local sales or use tax paid in another state” beginning on page 4.
or local unit of government on property or services purchased 
outside Wisconsin and subsequently stored, used or consumed                         Step F   Use Tax – County and Stadium
in Wisconsin. The credit is allowed against (but not in excess 
of) the total of Wisconsin state and county use taxes imposed                      The county use tax is imposed on the purchase price of tangible 
on the same property or services purchased in the other state.                     personal  property,  taxable  digital  goods,  or  taxable  services 
A special computation is required to claim credit for the tax paid                 (1) you used, stored, or consumed in a county that has adopted 
in the other state.                                                                the county sales and use tax (taxable county), and (2) upon which 
Note: When the combined state and local taxes paid to the other                    you did not pay the county tax to the seller.  Note: If you paid 
state equals or exceeds the combined Wisconsin state and local                     another state’s sales or use tax on your purchase, see “Credit for 
use tax, no entry is required on the Wisconsin sales and use tax                   state and local sales or use tax paid in another state” on page 3.
return to report the purchase or the credit for tax paid to the other              Exception  – You do not owe county use tax on tangible per‑
state on the same purchase.                                                        sonal property, taxable digital goods, or taxable services you 
The following examples include various situations persons may                      purchased in a Wisconsin county that has not adopted the tax 
encounter with respect to Wisconsin state and county sales                         and later brought to a taxable county where you stored, used, or 
and use taxes, if they purchase items outside Wisconsin and                        consumed it. This exception does not apply to certain registered 
are required to pay sales or use taxes to the other state. The                     or titled items and construction materials used in real property 
examples show how to use the amount of sales tax paid to the                       construction.
other state as a credit against Wisconsin state and county taxes 
imposed and how to compute and report the Wisconsin state                          Motor  vehicle  dealers  who  reported  state  use  tax  for  motor 
and county taxes due.                                                              vehicles  on line 21 must also report county use  tax on the 
                                                                                   vehicles, if the vehicles were customarily kept in one of the tax‑
Facts: Company A, located in Wisconsin, purchases office                           able counties.
equipment for $10,000 from a supplier in State B. Company A 
takes possession of the equipment in State B. Company A is prop‑                   Contractors:  Include the purchase price of tangible personal 
erly charged State B’s 4% state sales tax ($400) and State B’s                     property which becomes a component part of real property 
0.5% local sales tax ($50). Company A brings the equipment into                    located in a taxable county, unless a Wisconsin county tax was 
Wisconsin for use in the following locations.                                      paid on the tangible personal property or an exemption applies.
Example 1 – Only the 5% state use tax is due.                                      Lines 22 through 25.  If, for the period covered by your sales 
                                                                                   and use tax return, you had:
Company A brings the equipment into Wisconsin for use in a 
county which does not impose the county sales and use tax.                         •  Taxable purchases in 4 or fewer of the counties listed in the 
Company A can determine  the Wisconsin  state use tax as                            chart on page 2, report these purchases on lines 22 through 
follows:                                                                            25 of your sales and use tax return.
1. Purchase price  ....................................................  $ 10,000  •  Taxable purchases in 5 or more of the counties listed in the 
                                                                                    chart on page 2, report these purchases on the county sales 
2. 5% Wisconsin use tax ($10,000 x .05)  ..... $ 500                                and use tax schedule, Schedule CT. (If you report taxable 
3. Less 4.5% use tax paid to                                                        purchases on Schedule CT, leave lines 22 through 25 blank 
  State B ($10,000 x .045)  ..........................   450                        on your sales and use tax return).
4. Net use tax due to Wisconsin  .................. $  50                            Schedule CT may be obtained on our website.
5. Measure of tax ($50 ÷ .05 tax rate)  .....................  $  1,000
                                                                                   To complete lines 22 through 25 (you had taxable purchases in 
Company A should include the $1,000 on line 21a.                                              of the counties in the chart on page 2):
                                                                                   4 or fewer
Example 2 – The 5% state and 0.5% county use tax is due.                           a.  Enter the two‑digit county code, from the chart on page 2, 
                                                                                    for each county in which you had taxable purchases. (For 
Company A brings  the equipment  into Wisconsin  for use in                         example,  if  you  had  taxable  purchases  in  Door  County, 
a county which imposes the 0.5% county sales and use tax.                           enter 15).
Company A can determine the Wisconsin state and county use 
tax as follows:                                                                    b.  Enter  the  first  5  letters  of  each  county  in  which  you  had 
                                                                                    taxable purchases. Capitalize, but ignore spaces and punc‑
1. Purchase price  ....................................................  $ 10,000   tuation. (For example, enter STCRO for St. Croix County and 
2. 5.5% Wisconsin use tax                                                           MILWA for Milwaukee County.)  EXCEPTION: Enter GLAKE 
  ($10,000 x .055)  ....................................... $ 550                   for Green Lake County.
3. Less 4.5% use tax paid to                                                       c.  Enter the taxable purchases for each county, on lines 22c, 
  State B ($10,000 x .045)  ..........................   450                        23c, 24c, and/or 25c.
4. Net use tax due to Wisconsin  .................. $ 100                          Line 26. Total purchases subject to county use tax:  Add the 
5. Measure of tax ($100 ÷ .055 tax rate)  ................ $1,818.18               amounts for lines 22c through 25c. Enter this total, or the total 
                                                                                   from Schedule CT, page 2, Column 2 on line 26. Multiply that 
Company  A should  include  the $1,818.18  on  line  21a  and 
                                                                                   amount by 0.5% (.005) and enter the result on line 27.
line 22c.
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Line 28. Baseball stadium district taxable purchases:  Enter 
the portion of your purchases subject to state use tax (line 21a)     Amending Previously Filed Sales and Use Tax Returns
that you (1) used, stored, or consumed in Milwaukee, Ozaukee, 
Racine, Washington, or Waukesha counties,  prior to April 1,          Note:  Amended returns may be filed online through    My Tax 
2020, and (2) upon which you did not pay the baseball stadium         Account.
tax to the seller on line 28a. Multiply that amount by 0.1% (.001) 
and enter the result on line 28b. Note: If you paid another state’s   1.  Select the amended return option. Leave the due date box 
sales or use tax on your purchase, see “Credit for state and local     blank.
sales or use tax paid in another state” on page 3.                    2.  Complete lines 1 through 30 of Form ST‑12 (also complete 
Exception – You do not owe baseball stadium use tax on tangible        Schedule CT, if necessary) using the correct figures, including 
personal property, taxable digital goods, or taxable services that     those that did not change.
you purchased in a Wisconsin county not in the baseball stadium        Line 19:  If this amended return           increases your total sales 
district and later brought to a county in the baseball stadium dis‑    tax, enter the discount from your original return (or as sub‑
trict where you used, stored, or consumed it. This exception does      sequently adjusted). Do not calculate a discount on the 
not apply to certain registered or titled items and construction       additional amount due.
materials used in real property construction prior to April 1, 2020.
                                                                       If this amended return decreases your total sales tax, the 
Motor  vehicle  dealers  who  reported  state  use  tax  for  motor    discount must be recomputed.
vehicles on line 21 must also report baseball stadium use tax on 
the vehicles, if the vehicles were customarily kept in the baseball   3.  The total amount due is calculated as provided on the follow‑
stadium district  prior to April 1, 2020.                              ing worksheet.
Contractors:  For purchasers prior to April 1, 2020, include the      4.  Attach a letter explaining the reason(s) for amending your 
purchase price of tangible personal property which becomes a           return(s). Include copies of applicable exemption certificates, 
component part of real property located in the baseball stadium        invoices, credit memos, and workpapers. Do not take credit 
district unless you have paid the Wisconsin baseball stadium           for any overpayments on future returns.
sales tax on your purchase of the property.
                                                                      CAUTION:  If the sales or use tax being refunded was collected 
Line  29.  Football  stadium  district  taxable  purchases:           from buyers, you must return the tax and related interest to the 
Important!  Do not report football stadium tax on purchases           buyers from whom the tax was collected. If you are unable to 
made after September 30, 2015.                                        return the tax and interest to the buyers, you must return the 
                                                                      refund (tax and interest) to DOR. Failure to return the tax and 
  Step G  Total Amount Due                                            interest may result in a penalty.
Line 30. Total sales and use taxes:  Add the tax amounts from 
lines 20, 21b, 27, and 28b. This is the total of the sales and use                      Worksheet to Figure Refund or
taxes due on this return.                                                     Amount Due on Amended Form ST-12
Line 31. Interest:  If your return is not filed by the due date,        1. Fill in amount from line 30, 
                                                                        amended Form ST‑12  .........  1. _____________
you are subject to interest on the amount on line 30 (total sales 
and use taxes due) at the rate of 1.5% per month from the due           2. Fill in the total sales and use tax
date of the return to the date the tax is paid. Fill in the amount      amount from your original return
of interest on line 31.                                                 (or subsequently adjusted return)   2. _____________
                                                                        3. If line 2 is more than line 1,
Line 32. Late filing fee ($20) and negligence penalty:  Returns         subtract line 1 from line 2. This is the
filed after the due date are subject to a $20 late filing fee, and a    amount you overpaid. STOP HERE.
negligence penalty equal to 5% of the amount on line 30 (total          We will calculate the amount of your
sales and use taxes due) for each month or fraction of a month          refund including interest. .................  3. ______________
the return is late, up to a maximum penalty of 25%.                     4. If line 2 is less than line 1, subtract
Note:  The late filing fee and negligence penalty may be waived         line 2 from line 1. Fill in here ..............  4. ______________
in the case of death of the person required to file the return, and     5. Compute interest on the amount on
in cases where a reasonable explanation exists for the late filing.     line 4 at 12% per year from the due date
                                                                        of the original return to the date you pay
Line 33. Total amount due:  Add the amounts on lines 30, 31,            the additional tax. Fill in here and on
and 32. This is the total amount due with this return. Payment          line 31, on the amended Form ST‑12  .......  5. ______________
may be made by electronic funds transfer (EFT) or by credit card.       6. Add lines 4 and 5. Fill in here and pay this
                                                                        amount with the amended Form ST‑12   .....  6. ______________

                                                   Applicable Laws and Rules
  This document provides statements or interpretations of the following laws and regulations in effect as of August 14, 2023:  Ch. 
  77, Wis. Stats,, and sec. Tax 11, Wis. Adm. Code.

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