FINAL DRAFT 10/23/23
                                                    interest updated to 8% in inst.
                                                                                                                                                                          *238911*
2023 M8X, Amended S Corporation Return
Explain each change on page 2 of Form M8X.                                                                                                                         Do not use staples on anyting you submit.

Tax year beginning (MM/DD/YYYY)                     /           /           and ending (MM/DD/YYYY)                                                 /                    /

Name of Corporation                                                                                                              Federal ID Number                                  Minnesota Tax ID Number
                                                                                                                                 Check this box if the name or address has changed since 
Mailing Address                                                                                                                  filing your original return. Fill in former information below. 

City                                                       State    ZIP Code                                                     Former Name or Address, if Changed

                                                                                                                                 Number of Amended Schedule KS                      Number of Shareholders

                                                                                                                                 Installment Sale of               Pass-through        Tax Position
                      
all that apply:                                 
Place an X in          Income Tax Composite        Financial Institution     QSSS                                                Pass-through Assets               Entity (PTE) Tax    Disclosure
                                                                                                                                 or Interests                                          (Enclose Form TPD)

Check box to indicate the                  Amended                             Changes Affect                                                                       Changes Affect 
reason you are amending:                   Federal Return                      IRS Adjustment                                                                       Schedules KS 
                                                                                                                                                                    Public Law 
                                           Changes Affect M8A                  Nonresident Withholding                                                              86-272

  1  S corporation taxes (enclose computation):
      Original:        Sch D taxes                 Passive income 

                       LIFO recapture
 
      Amended:         Sch D taxes                 Passive income                                                                         A–As previously reported   B–Net change         C–Corrected amounts

                       LIFO recapture  .  . . . . .  . . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . 1                                                             

  2   Minimum fee (from line 2 of Form M8)  . . .  . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .   2                                                                          

  3   Pass-through Entity Tax (enclose Schedule PTE) . . . . . .  . . . . . . .  . . . .  . . . . . .  .   3                                                                              

  4   Composite income tax (enclose Schedules KS)            . . .  . . . . . .  . . . . .  . . . . . . .  . . . .   4                                                                    

  5   Nonresident Minnesota withholding  . . . . .  . . . . .  . . . . .  . . . . . . .  . . . . .  . . . . .   5                                                                                             

  6   Add lines 1 through 5 . . .  . . . . . .  . . . . .  . . . . . . .  . . . . .  . . . . .  . . . . . .  . . . . .  . . .   6                                                         

  7   Employer Transit Pass Credit not passed through to shareholders 
      (enclose Schedule ETP) . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . .   7                                                          

  8   Film Production Tax Credit . . .  . . . . . .  . . . . .  . . . . . . .  . . . . .  . . . . . .  . . . . .  . . . .   8                                                             

      Enter the credit certificate number: TAXC - 

  9   Tax Credit for Owners of Agricultural Assets not passed through to  
    shareholders  . . .  . . . . . .  . . . . .  . . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . . . .   9                                                    
     Enter the certificate number from the certificate you received from the  
     Rural Finance Authority: AO                 - 

  10  Housing Tax Credit   .  . . . . .  . . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . .  . . . . . .  . . . . . .  .10                                                     

      Enter the credit certificate number from Minnesota Housing: SHTC -                                                              - 
                                                                               9995                                                                                 Continued next page

2023 M8X, page 2
                                                                                                                                                *238921*

 Name of Corporation                                                                                                Federal ID Number           Minnesota Tax ID Number
                                                                                                                    A–As previously reported  B–Net change                                                           C–Corrected amounts

 11  Short Line Railroad Infrastructure Modernization Credit  . . . . .  . . . . .  . . . . . .  .11                                                                                                            

 12  Credit for Sales of Manufactured Home Parks to Cooperatives  . . .  . . . . . .  . .  .12                                                                                                                  

 13  Add lines 7 through 12, limited to the sum of lines 1 and 2  . . .  . . . . . .  . . . .  .  13                                                                                                                 

 14  Subtract line 13 from line 6 (if result is zero or less, leave blank)   . .  . . . . .  .  .  14                                                                                                                

 15  Enterprise Zone Credit (enclose Schedule EPC)  . . . . . .  . . . . . . .  . . . . .  . . . . .  .  .15                                                                                                         

 16  Estimated tax and/or extension payments    . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . .  .16                                                                                                    

 17  Amount due from original Form M8, line 20 (see instructions)  . .  . . . . .  . . . . . . .  . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . 17   

 18  Total refundable credits and tax paid (add lines 15C, 16C, and 17)  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 18   

 19  Refund amount from original Form M8, line 25 (see instructions)   .  . . . . .  . . . . . . .  . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . .  . 19   

 20  Subtract line 19 from lines 18 (if result is less than zero, enter the negative amount)   . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .  . 20   

 21  Tax you owe. If line 14C is more than line 20, subtract line 20 from line 14C  
     (if line 20 is a negative amount, see instructions)  . . .  . . . . . .  . . . . .  . . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . .  . 21   

 22  If you failed to timely report federal changes or the IRS assessed a penalty (see instructions)   .  . . . . . .  . . . . . .  . . . . .  . . .  . 22                                                                               

 23  Add lines 21 and 22  . . .  . . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . 23                        

 24  Interest (see instructions)   . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .  .  . 24                         

 25  AMOUNT DUE (add lines 23 and 24). Skip lines 26–27   . . . .  . . . . . .  . . . . .  . . . . . .  . . . . . .  . . . . .  . . . . . .  . . . . .  . . . . . .  . . . .  . 25                                                       

     Check payment method:          Electronic (see instructions), or       Check (see instructions)

 26  REFUND  . If line 20 is more than line 14C, 22, and 24, subtract lines 14C, 22, and 24 from 20                     . . .  . . . . . .  . . . . .  . . . . . . .  . 26                                                               

 27  To have your refund direct deposited, enter the following. Otherwise, you will receive a check.
  
     Checking           Savings  
                                Routing number                            Account number (use an account not associated with any foreign banks)  
                                                                                                                       /               /
Signature of Officer                                                                                                  Date (MM/DD/YYYY)         Officer’s Direct Phone
                                                                                                                       Employee Email           Paid Preparer Email                                                    Other
Print Name of Officer                                   E-mail Address for Correspondence, if Desired                     
                                                                                                                       /               /
Preparer’s Signature                                    Preparer’s PTIN                                               Date (MM/DD/YYYY)         Preparer’s Direct Phone
Enclose a detailed explanation of net changes and show computations in detail. 
Enclose your list of changes, amended schedules, and a complete copy of the 
amended federal Form 1120s, if any.
Mail to:                                                                                                               I authorize the Minnesota Department of Revenue 
Minnesota S Corporation Tax                                                                                            
                                                                                                                              to discuss this tax return with the preparer.
Mail Station 1770, 600 N. Robert St., St. Paul, MN 55146-1770

                                                                          9995

                                             FINAL DRAFT 10/23/23
                                             interest updated to 8% in inst.

2023 Form M8X Instructions

Before you can complete Form M8X, you will need the M8 instructions for the year you are amending .

Who Should File M8X?
This form must be filed by S corporations to correct—or amend—an original Minnesota Form M8, S Corporation Return. If you are amending a 
return from a tax year other than the year listed at the top of this form, use the Form M8X for that year. 
Federal Return Adjustments. If the Internal Revenue Service (IRS) changes or audits your federal return or you amend your federal return, you 
have 180 days to file an amended Minnesota return. If you are filing Form M8X based on an IRS adjustment, check the box in the heading and 
attach to your Form M8X a complete copy of your amended federal return or the correction notice you received from the IRS.
If you fail to report as required, a 10 percent penalty will be assessed on any additional tax. See line 19 instructions.
Claim for Refund. Use Form M8X to make a claim for refund and report changes to your Minnesota liability. If you make a claim for a refund 
and we do not act on it within six months of the date filed, you may bring an action in the district court or the tax court.

Pass-through Entity Tax and Nonresident Withholding
Overpayments of nonresident withholding are limited to the amount of the overpayment that was not deducted or withheld from the  
S corporation. Overpayment of the PTE tax are limited if the shareholder has claimed the pass-through entity tax credit on their return.  
The S corporation should provide enough information so the shareholders may file an accurate amended income tax return. This may include 
amended federal schedules K-1 and KS showing the change. The shareholders must amend their income tax return reflecting these changes to 
calculate a change in tax due.

When to File
File Form M8X only after you have filed your original return. You may file Form M8X within 3½ years after the return was due or within one 
year from the date of an order assessing tax, whichever is later. If you filed your original return under an extension by the extended due date, you 
have up to 3½ years from the extended due date to file the amended return. 

Filing Reminders
The amended return must be signed by a principal officer of the corporation.
If you pay someone to prepare your return, the preparer must sign and enter his or her PTIN number and daytime phone.
Round amounts to the nearest dollar. Decrease any amount less than 50 cents and increase any amount that is 50 cents or more to the next 
higher dollar.

Completing the Form
Enter the beginning and ending dates for the tax year you are amending at the top of the form. Enclose, on a separate sheet of paper, a detailed 
explanation of why the original return was incorrect. Providing this information will help us verify the amended amounts. Do not staple or tape 
any enclosures to your return. 
Estimated payments and refunds credited to subsequent years cannot be amended or changed after the original return is filed.
Form AWC, Alternative Withholding Certificate, can only be filed with the original return. Any Forms AWC received after the filing of the 
original return will be denied.
Apportionment Factors. Minnesota uses the single sales apportionment factor.

Use of Information
All information provided on this form is private, except for your Minnesota tax ID number, which is public. Private information cannot be given 
to others except as provided by state law. 
The identity and income information of the shareholders are required under state law so the department can determine the shareholder’s correct 
Minnesota taxable income and verify if the shareholder has filed a return and paid the tax. The Social Security number of the shareholders are 
required to be reported on Schedule KS under M.S. 289A.12, subd. 13.
Lines 1–16  
Columns A, B and C
Column A: Enter the amounts shown on your original return or as later adjusted by an amended return or audit report.
Column B: Enter the dollar amount of each change as an increase or decrease for each line you are changing. Show all decreases in parentheses. 
                                                                                                                            Continued     1

2023 Form M8X Instructions (Continued)

If the changes you are making affect the amounts on a schedule, you must complete and enclose a corrected schedule. 
If you do not enter an amount when there is a change, the processing of your amended return will be delayed. You must also explain each 
change in detail in the space on page 2 of Form M8X and enclose any related schedules or forms.
If you are not making a change for a given line, leave column B blank.
Column C: Enter the corrected amounts after the increases or decreases. If there are no changes, enter the amount from column A.
Line 3
The Pass-through Entity (PTE) tax election may be made on a return filed on or before the extended due date of your original return. 
Complete and enclose an updated Schedule PTE if the reason you are amending caused a change in the PTE tax calculation.
Do not reduce the PTE tax by any amount that was deducted and withheld from the shareholder’s shares.
Line 17
Enter the total of the following tax amounts, whether or not paid:
•  amount from line 20 of your original M8
•  any additional tax due from a previously filed M8X
•  additional tax due as the result of an audit or notice of change
Do not include any amounts that were paid for penalty, interest or underpayment of estimated tax. 
Line 19
Enter the total of the following refund amounts:
•  from line 25 of your original M8, even if you have not yet received it
•  any refund amount from a previously filed form M8X 
•  refund or reduction in tax from a protest or other type of audit adjustment
Include any amount that was credited to estimated tax, applied to pay past due taxes or donated to the Minnesota Nongame Wildlife Fund.
Do not include any interest that may have been included in the refunds you received. 
Lines 21 and 26
Lines 21 and 26 should reflect the changes to your tax and/or credits as reported on lines 1 through 18 of Form M8X. If you have unpaid 
taxes on your original Form M8, Form M8X is not intended to show your corrected balance due. 
Line 21
If line 20 is a negative amount, treat it as a positive amount and add it to line 14C. Enter the result on line 21. This is the amount you owe, 
which is due when you file your amended return. You cannot use any funds in your estimated tax account to pay this amount. Continue with 
line 22.
Line 22
If only one of the penalties below applies, you must multiply line 21 by 10 percent (.10). If both penalties apply, multiply line 21 by 20 percent 
(.20). Enter the result on line 22.
•  The IRS assessed a penalty for negligence or disregard of rules or regulations; and/or
•  You failed to report federal changes to the department within 180 days as required.
Line 24
Interest is calculated as simple interest and accrues on unpaid tax and penalties from the regular due date until it is paid in full. Use the for-
mula below with the appropriate interest rate: 
 Interest = line 20 x number of days past the due date x interest rate ÷ 365
If the days fall in more than one calendar year, you must determine the number of days separately for each year. 
The interest rates for recent years are: 
 2024     8%        2010-16        3%     2003       5%
 2023     5%        2009           5%     2002       7%
 2021-22  3%        2007-08        8%     2001       9%
 2019-20  5%        2006           6%     1999-2000  8%
 2017-18  4%        2004-05        4%     1998       9%

Penalty will be assessed if the additional tax and interest are not paid with the amended return.
Line 25
Pay Electronically. Go to www.revenue.state.mn.us and log in to e-Services. When paying electronically, you cannot use a foreign bank 
account.
                                                                                                                    Continued                     2

2023 Form M8X Instructions (Continued)

Pay by Check. Go to www.revenue.state.mn.us and select Make a Payment. Select Check. Use the Payment Voucher System to create a 
voucher. 
Your check authorizes us to make a one-time electronic fund transfer from your account. You will not receive your canceled check.
Line 26
If you want your refund to be directly deposited into your bank account, complete line 27. Your bank statement will indicate when your 
refund was deposited to your account. Otherwise, skip line 27 and your refund will be sent to you in the mail.
This refund cannot be applied to your estimated tax account.
Line 27
If you want your refund to be directly deposited into your checking or savings account, enter the routing and account numbers. You must use 
an account not associated with any foreign banks.
The routing number must have nine digits.                                                       You can find your bank’s routing number and  
                                                                                                account number on the bottom of your check.
The account number may contain up to 17 digits (both numbers and letters). Enter the number 
and leave out any hyphens, spaces and symbols.
If the routing or account number is incorrect or is not accepted by your financial institution, 
your refund will be sent to you in the form of a paper check.
By completing line 27, you are authorizing the department and your financial institution to initiate electronic credit entries, and if necessary, 
debit entries and adjustments for any credits made in error.

Signature
The return must be signed by the principal officer of the organization receiving, controlling or managing the income of the S corporation. The 
person must also include his or her ID number. 
If someone other than the principal officer prepared the return, the preparer must also sign. The preparer’s PTIN and phone number should 
also be included. 
Check the box to authorize the department to discuss this return with the preparer. This authority allows us to discuss with your preparer 
these items from this return: line item details; tax due on original and adjustments made during processing; penalty or interest due; documents 
received or sent like a tax order or bill; and dates and amounts of payments, credits, or refunds. The authority also allows your preparer to 
cancel direct deposit or debit payments and submit an abatement request.
The authority granted by a marked return checkbox is valid for one year after the due date for current original returns, or one year from the 
date the form was submitted for amended and noncurrent original returns.
Checking the box does not give your preparer the authority to sign any tax documents on your behalf, represent you at any audit or appeals 
conference, or discuss abatement progress. For these types of authorities, you must file Form REV184b, Business Power of Attorney, with the 
department.
Email Address
If the department has questions regarding your return and you want to receive correspondence electronically, indicate the email address below 
your signature. Check a box to indicate if the email address belongs to an employee of the S corporation, the paid preparer or other contact 
person.
By providing an email address, you are authorizing the department to correspond with you or the designated person over the Internet and you 
understand that the entity’s nonpublic tax data may be transmitted over the Internet. 
You also accept the risk that the data may be accessed by someone other than the intended recipient. The department is not liable for any 
damages that the entity may incur as a result of an interception.

Information and Assistance
Website: www.revenue.state.mn.us
Email:  BusinessIncome.Tax@state.mn.us
Phone:  651-556-3075
This material is available in alternate formats. 

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