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                     2023

Form 

MO-1120S

S-Corporation Income Tax Return  

General Instructions 

File Electronically
Electronic filing is fast and easy. See page 1 for details.

Tax Deadline is April 15. See page 1 for extensions.



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ELECTRONIC FILING OPTIONS FOR S-CORPORATION TAX RETURNS
Corporations may file Missouri MO-1120S Corporation Income tax returns electronically in conjunction with the IRS through Modernized E-File 
(MeF). This system has been developed through a cooperative effort between the IRS, states, and the software community.  The system uses 
the latest electronic technology and industry standards. Corporations may visit the Department’s website at dor.mo.gov/taxation/business/
tax-types/corporation-income/efile.html for more information regarding electronic filing as well as a list of approved vendors that support 
corporate electronic filing. Corporations may choose from the following filing methods:
1.  Federal and State Corporation tax returns may be prepared and filed electronically by an IRS approved Electronic Return Originator (ERO). 
Corporations may visit https://www.irs.gov/e-file-providers/authorized-irs-e-file-provider-locator-service-for-tax-professionals to find a  
participating ERO.
2. State Corporation MO-1120S returns can be prepared and transmitted as a stand-alone state return through an IRS approved ERO.   
                                                         Benefits of Electronic Filing
           Convenience    •    Security    •    Proof of Filing    •    Direct Deposit of Refunds    •    Greater Accuracy 

FORM MO-1120S                                                                  NONRESIDENT SHAREHOLDERS
GENERAL INFORMATION                                                           Every S-Corporation must file Form MO-1NR, Income Tax Withheld 
                                                                              for Non resi dent Individual Partners or S-Corporation Shareholders 
This information is for guidance only and does not state the complete law.    and send in copies of Form MO-2NR, Statement of Income Tax 
                                                                              Payments for Nonresident Individual Partners or S-Corporation 
FILING REQUIREMENTS FOR FORM MO-1120S                                         Shareholders if they have nonresident individual shareholders who 
                                                                              do not meet one of the following exceptions:
Every S-Corporation must file Form MO-1120S if they file Federal 
Form 1120S and the S-Corporation has: 1) a shareholder that is a               • The nonresident shareholder, not otherwise required to file a 
Missouri resident; or 2) any income derived from Missouri sources.             return, elects to have the Missouri income tax due paid as part 
Attach a copy of Federal Form 1120S and all Schedule K-1(s).                   of the S-Corporation’s composite return;
For further information, see Section 143.471, RSMo, and 12 CSR                 •   The nonresident shareholder, not otherwise required to file a  
10-2.190.                                                                      re turn, had Missouri assignable federal adjusted gross income 
                                                                               from the S-Corporation of less than $1,200;
MISSOURI REGISTRATION                                                          •   The S-Corporation is liquidated or terminated, income was 
Every S-Corporation must register with the Department of Revenue               generated by a transaction related to termination or liquidation, 
                                                                               and no cash or property was distributed in the current or prior 
to receive a Missouri Tax Identification Num ber. To register visit our        taxable year.
website at dor.mo.gov/register-business/,  call Business Registration  
at (573) 751-5860, or contact: Missouri Department of Revenue,                Pursuant to Section 143.411, RSMo, a nonresident shareholder can 
Taxation Division, P.O. Box 3300, Jefferson City, MO 65105-3300.              request the S-Corporation be exempt from withholding by filing a 
                                                                              completed Form MO-3NR, Partnership or S-Corporation 
WHEN TO FILE                                                                  With holding Exemption or Revocation Agreement.
                                                                              Form MO-1NR must be filed by the due date or extended due date 
The Missouri S-Corporation return is due on or before the 15th day of         for filing the S-Corporation income tax return. Form MO-3NR must be 
the fourth month following the end of the tax year. Example: Taxable          filed by the due date for filing the S-Corporation income tax return 
period of January 1, 2023, to December 31, 2023 is due April 15, 2024.        without regard to an extension of time to file.
Note: When the due date falls on a Saturday, Sunday, or legal holiday,        Forms may be obtained online at our website at dor.mo.gov/forms/.
the return will be considered timely filed on the next business day.
                                                                              If you have technical questions concerning the filing of Form 
Mail your return to: Missouri Department of Revenue, P.O. Box 336,            MO-1NR and Form MO-3NR or are filing a composite return and you 
Jefferson City, MO 65105-0336.                                                have questions, contact the Taxation Division at (573) 751-1467 or by 
                                                                              e-mail at corporate@dor.mo.gov.
PERIOD COVERED BY THE RETURN
                                                                                                                              
Form MO-1120S must cover the same period as the corresponding                  S-CORPORATION ADJUSTMENTS
Federal Form 1120S. Indicate the period covered on the front of the return.   Each S-Corporation, having modifications, must complete the Form 
REPORTABLE TRANSACTION DISCLOSURE                                             MO-1120S, Pages 1 and 2, Lines 1–15 and Page 3, the Allocation of 
                                                                              Missouri S-Corporation Adjustment to Shareholders, and notify each 
STATEMENT FEDERAL FORM 8886                                                   shareholder of the adjustments to which they are entitled. Missouri 
Every corporation must include with the Missouri return a copy of each        income tax law provides adjustments to a shareholder’s share of the 
Federal Form 8886 that was filed with the IRS as part of its federal return.  S-Corporation income included in their individual federal income 
                                                                              tax return in order to properly determine their individual Missouri 
EXTENSION OF TIME TO FILE                                                     adjusted gross income reported on Form MO-1040. A copy of the 
                                                                              Form MO-1120S should be provided to each shareholder.
If an S-Corporation has been granted an extension of time to file its 
federal income tax return, the time for filing the Missouri corporation 
income tax return is automatically extended. Select the box at the top 
of the form indicating you have an approved federal extension and 
attach a copy of the Federal Extension Form 7004 to the MO-1120S. 
(Failure to check this box may result in disallowing the extension.)

CONTACT INFORMATION              
If you have questions, you may contact Corporate Tax at  
(573) 751-4541 or by e-mail at corporate@dor.mo.gov.                                        *14000000001*
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                                                                                        equal or exceed $500. If less than $500, enter zero. Refer to Section 
Additions                                                                               143.121.3(1), RSMo, for further explanation.
   LINE 1 - MISSOURI CORPORATION INCOME TAX &                                           In arriving at the amount of related expenses, the taxpayer may use 
   CORPORATION INCOME TAX OF OTHER STATES                                               actual expenses or a reasonable estimate. In general, the taxpayer 
   DEDUCTED IN DETERMINING FEDERAL TAXABLE INCOME                                       should use the same or similar method used to compute related 
                                                                                        expenses for federal income tax purposes, provided that the method 
Line 1a: Enter the amount of Missouri corporation income tax deducted                   reasonably reflects related expenses for Missouri exempt income.
on Federal Form 1120S (Section 143.141(1), RSMo), and the amount of                     If a taxpayer fails to compute reasonable related expenses, the 
corporation income taxes from other states, their subdivisions and the                  Director of Revenue will make adjustments based on the information 
District of Columbia deducted on Federal Form 1120S (12 CSR 10-2.160                    made available. If sufficient information is not made available or if the 
and Sec tion 143.141(2), RSMo).                                                         taxpayer’s records do not provide sufficient information, the Director of 
Include on Line 1a the income tax (however named) of the following                      Revenue will use the following formula to compute related expenses:
states taken as a deduction on the federal Form 1120S:
Alabama            Illinois         Missouri                   (excludes Corporate       Exempt Income                      Expense                 Reduction to 
                                                               License Fee)
 Alaska              (includes re-  Montana                                                 Total Income              X     Items            =      Exempt Income
                   placement tax)
Arizona            Indiana          Nebraska                 South Dakota
 Arkansas          Iowa             New Hampshire Tennessee
                                      (Business Profits Tax)   (excise tax)             The principal expense item in this formula is interest expense; however, 
 California        Kansas           New Mexico               Texas                      the Director of Revenue may include other expense items because 
  (income and                                                                           of their direct relationship to the production of exempt income. The 
   franchise tax)  Kentucky         North Carolina           Utah
 Colorado          Louisiana        North Dakota             Vermont                    taxpayer may propose an alternative method provided that it properly 
 Delaware          Maine            Oklahoma                 Virginia                   reflects the amount of related expenses.
 Florida           Maryland         Oregon                   West Virginia
 Georgia(excludes  Michigan         Pennsylvania             Wisconsin                  EnterLINEon7 -LineAMOUNT6 the netOF ANYamountSTATEof LineINCOME6a lessTAXLine 6b.
 
net worth tax)     Minnesota        Rhode Island                                         REFUND INCLUDED IN FEDERAL TAXABLE INCOME
Hawaii             Mississippi      South Carolina                                      Enter the amount of any state income tax refund for a prior year that 
Idaho 
Line 1b: Enter the amount of Kansas City and St. Louis earnings tax.                    was included in the federal taxable income for the current year (Section 
                                                                                        143.121.3(5), RSMo).
   LINE 2 - STATE AND LOCAL BOND INTEREST 
    (EXCEPT MISSOURI)                                                                    LINE 8 - FEDERALLY TAXABLE MISSOURI EXEMPT  
                                                                                         OBLIGATION
Line 2a: Enter all interest from state and local bonds, excluding  
Missouri (Section 143.121.2(2), RSMo).                                                  The amount of any bond issued by the Missouri Higher Education Loan 
Line 2b: Enter the amount of expenses associated with the state and                     Authority (MOHELA) including interest or proceeds resulting from the 
local bond interest. The expenses must equal or exceed $500. If less                    sale of the bond is exempt from Missouri tax.  If the amount is included 
than $500, enter zero. Refer to Section 143.121.2(2), RSMo, for further                 in federal taxable income, the amount can be sub tracted from federal 
explanation.                                                                            taxable income for Missouri tax purposes pursuant to Section 173.440, 
                                                                                        RSMo. Enter the exempt amount on Line 8 and provide documentation 
   LINE 3 - FIDUCIARY AND PARTNERSHIP ADJUSTMENT                                        with the return.
   (FROM FORM MO-1041 AND FORM MO-1065)
                                                                                         LINE 9 - FIDUCIARY AND PARTNERSHIP ADJUSTMENT (FROM 
Enter the share of fiduciary and partnership adjustment as shown                         FORM MO-1041 AND FORM MO-1065), BUILD AMERICA  
on Form MO-1041, Page 2, Part 1, Line 19, and Form MO-1065, Line                         AND RECOVERY ZONE BOND INTEREST, MISSOURI  
11 (Section 143.121.4 and 5, RSMo).  A copy of Forms MO-1041 and                         PUBLIC-PRIVATE TRANSPORTATION ACT, OTHER
MO-1065 must be attached.
                                                                                        Fiduciary and Partnership Adjustment - Enter the share of fiduciary and 
   LINE 4 - DONATIONS CLAIMED FOR THE FOOD PANTRY                                       partnership adjustment as shown on Form MO-1041, Page 2, Part 1, Line 
                                                                                        20 and Form MO-1065, Line 12 (Section 143.121.4 and 5, RSMo). A copy 
   TAX CREDIT THAT WERE DEDUCTED FROM FEDERAL                                           of Forms MO-1041 and MO-1065 must be attached. 
   TAXABLE INCOME
                                                                                        Build America and Recovery Zone Bond Interest - Enter the share 
Enter the total amount of donations claimed for the Food Pantry Tax                     of Build America and Recovery Zone Bond interest (Section 
Credit that were also taken as a deduction on the Federal Form 1120S                    108.1020,RSMo).
return (Section 135.647, RSMo).
                                                                                        Missouri Public-Private Partnerships Transportation Act - Enter the share 
                                                                                        of income received under the Missouri Public-PrivateTransportation Act 
   LINE 5 - TOTAL                                                                       (Section 227.646, RSMo).
Enter the total of Line 1 through Line 4.                                               Marijuana Business Deduction - Enter the amount that is eligible to  
                                                                                        be claimed as a federal income tax deduction but is disallowed by 
                                                                                        section 280E of the Internal Revenue Code. This deduction is 
Subtractions                                                                            exclusively limited to taxpayers authorized to do business under 
   LINE 6 - INTEREST AND DIVIDENDS FROM EXEMPT                                          Article XIV of Missouri’s Constitution. The Missouri deduction wll be 
   FEDERAL OBLIGATIONS (MUST ATTACH SCHEDULE)                                           the difference between the profit/loss as calculated on the hedule(s) 
                                                                                        filed with the federal return and the pro forma schedule(s) described 
                                                                                        above. You must submit the financial statement, schedule(s), your 
Line 6a: Enter the amount of interest and dividends from federal                        medical license number (MED), if any, and all federal schedule(s) 
obligations to the extent they are exempt from Missouri income tax,                     with your Missouri Form MO-1120S to claim the deduction.
but subject to federal tax (12 CSR 10-2.150 and Section 143.121.3(1), 
RSMo). A detailed list showing the amount of monies received or the                     Federal Broadband Grant Income Tax Subtraction - If you received grant 
percentage of funds received from direct   U.S. Government obligations                  money disbursed from a federal, state, or local Missouri program, for the 
must be attached to Form MO-1120S.                                                      express purpose of providing or expanding broadband internet to areas 
Line 6b: Enter the amount of interest on indebtedness and                               of Missouri that are deemed to be lacking such access, you may qualify 
expenses associated with the production of interest and dividend                        to subtract 100 percent of the grant money received. The grant money 
income on federal obligations shown on Line 6a. The expenses must                       must have been included in your federal taxable income. Attach the 
                                                                                        Form 1099-G issued to you validating the grant money received, grant 
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documents that indicate the area of Missouri was deemed to be lacking 
broadband internet access, a copy of federal Form 1120S, and applicable             FORM MO-MSS S-CORPORATION 
schedule(s). The amount reported cannot exceed your federal adjusted                ALLOCATION AND APPORTIONMENT 
gross income.
                                                                                    FORM
                                                                                    Use Form MO-MSS  to allocate and apportion income by using the 
 LINE 10 - MISSOURI DEPRECIATION BASIS ADJUSTMENT                                   Receipts Factor Apportionment Method or other appropriate method. 
Enter the difference between the federal and Missouri depreciation                  If utilizing the Receipts Factor Apportionment Method, complete Part 
calculated on assets purchased between July 1, 2002 and June 30,                    1. Attach Form MO-MSS to Form MO-1120S. Enter the percentage 
2003. See Section 143.121.3(7), RSMo for more information.                          from Part 1, Line 3 on Form MO-NRS Part 1, Line 1, Column 
                                                                                    (c). Line 1, Column (b) is computed by multiplying the percentage in 
 LINE 11 - DEPRECIATION RECOVERY ON                                                 Column (c) times the amounts in Column (a). The percentage is also 
 QUALIFIED PROPERTY THAT IS SOLD                                                    entered in the other lines on Column (c). If a distributive share item is 
                                                                                    wholly or partially allocated as nonapportionable income, a different 
Enter any depreciation that was previously not recovered when an asset              percentage will be computed for the item, following the steps listed 
is sold or otherwise disposed of and federal bonus depreciation was                 on Form MO-MSS. As noted on the Form MO-MSS, special methods 
previously taken. (Section 143.121.3(9), RSMo) This can only apply if the           three to seven may be used. Attach a detailed explanation to the Form 
property was purchased between July 1, 2002, and June 30, 2003.                     MO-1120S when utilizing these methods. 
                                                                                    If the corporation owns a percentage of a partnership(s), the partnership 
 LINE 12 - TOTAL                                                                    factors must be multiplied by the corporation’s percentage of ownership, 
Enter the total of Line 6 through Line 11.                                          and then added into the corporation’s apportionment factors.

 LINE 13 - MO S-CORPORATION ADJUSTMENT -                                            APPORTIONMENT ELECTION
  NET ADDITION
                                                                                    Missouri statutes provide a number of methods for determining 
If Line 5 is greater than Line 12, enter the difference on Line 13 as a positive    Missouri taxable income from Missouri sources. 
number.  If Line 5 is less than Line 12, skip Line 13 and complete Line 14.         Method Two A Receipts Factor Apportionment Section 143.455.2, 
                                                                                    RSMo. See instructions for completing Method Two A.
 LINE 14 - MO S-CORPORATION ADJUSTMENT -                                            Method Three TransportationSection 143.455.14, RSMo.
 NET SUBTRACTION                                                                    Method Four RailroadSection 143.455.15, RSMo.
If Line 12 is greater than Line 5, subtract Line 5 from Line 12.  Enter as a        Method Five Interstate BridgeSection 143.455.16, RSMo.
positive number on Line 14.                                                         Method Six Telephone and TelegraphSection 143.455.17, RSMo.
 LINE 15 - AGRICULTURE DISASTER RELIEF                                              Method Seven Other Approved Method — This method can only be 
                                                                                    used with prior approval from the Missouri Director of Revenue or 
Enter the amount of income your corporation received as payment                     pursuant to a Missouri regulation creating an alternative industry-
from any program which provides compensation to agricultural                        specific method under Section 143.455.13(2), RSMo. Attach a detailed 
producers who have suffered a loss as the result of a disaster or                   explanation of how any allocation and apportionment was performed. 
emergency (Section 143.121.3(10), RSMo)  . You must attach a copy                   Either a letter of approval must be attached to the return or the detailed 
of the Form 1099 indicating your agricultural payment.  For more                    explanation must identify the Missouri regulation that authorizes the 
information, visit dor.mo.gov.                                                      industry-specific method used and explain why the taxpayer qualifies 
                                                                                    for the industry-specific method. As of the date of this publication, the 
                                                                                    only industry-specific method allowed by Missouri regulation applies 
 AUTHORIZATION                                                                      to broadcasters under12 CSR 10-2.260. Corporations defined as a 
Check the “yes” box for authorization of release of confidential                    broadcaster under 12 CSR 10-2.260 must choose Method Seven. 
information. This authorizes the Missouri Director of Revenue or 
delegate to discuss this return and attachments with the preparer                   METHOD TWO A RECEIPTS FACTOR 
whose signature appears on the Form MO-1120S or with any member                     APPORTIONMENT INSTRUCTIONS
of their firm or if internally prepared, any member of the internal staff.          A taxpayer must have income from more than one state in order to 
If the authorization box is checked “no,” or if no box is checked, the              apportion and allocate income. Income from business activity includes 
Missouri Director of Revenue or delegate can only discuss this return               apportionable and nonapportionable income. The taxpayer’s income 
with an officer of the corporation. Refer to Section 32.057, RSMo.                  will be allocated and apportioned according to Section 143.455, RSMo. 
                                                                                    The taxpayer must determine which portion of the taxpayer’s  
 SIGNATURE                                                                          federal taxable income constitutes “nonapportionable income.” The 
The Department of Revenue requires the return to be signed by an                    various items of nonapportionable income are directly allocated to 
officer of the corporation. Enter the date signed, the title of the officer         specific states, which may include Missouri. The apportionable income 
whose signature is affixed, and the corporation’s tele phone number.                of the taxpayer is divided between states by using the receipts factor. 
Lines are provided for the preparer’s signature (other than taxpayer),              Items of nonapportionable income may be reported on Form MO-MSS.
Federal Identification Number, telephone number, and date. Failure to 
sign the return will cause a delay in the processing of the return. If a paid       APPORTIONABLE AND NONAPPORTIONABLE 
tax return preparer prepared this return and failed to sign the return or           INCOME DEFINED
enter the preparer’s tax identification number on the return, the paid tax 
return preparer may be penalized under Section 143.980, RSMo.                       “Apportionable income” means all income that is apportionable under 
                                                                                    the Constitution of the United States and is not allocated under the 
 ASSEMBLE YOUR RETURN                                                               laws of this state. Apportionable income includes, but is not limited 
                                                                                    to, income arising from transactions and activity in the regular course 
Assemble any forms and schedules in order behind Form MO-1120S.                     of the corporation’s trade or business. Apportionable income also 
If you have supporting documentation, arrange in the same order of                  includes, but is not limited to, income arising from tangible and 
forms and schedules they support and attach them last.  Do not attach               intangible property if the acquisition, management, employment, 
items unless required to do so.
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development, or disposition of the property is or was related to the            • If the ratio above cannot reasonably be determined, then the ratio of 
operation of the corporation’s trade or business. “Nonapportionable             one to the number of states in which the ultimate beneficiary operates.
income” means all income other than apportionable income. The                   • If the ratio above cannot reasonably be determined, then fifty 
classification of income by the labels customarily given them, such as          percent (50%). A taxpayer will not be subject to an addition to tax for 
interest, dividends, rents, and royalties, is not conclusive in determining     negligence in relying upon this approximation of fifty percent (50%).
whether the income is apportionable or nonapportionable income. 
                                                                                • Rental, Lease, or License of Intangible Property Receipts from the 
TAXABLE IN ANOTHER STATE                                                        rental, lease, or license of intangible property are in this state to the 
                                                                                extent that the intangible property is used in Missouri. Intangible 
A taxpayer is “taxable in another state” if it meets either one of two tests:   property that is rented, leased, or licensed and then used in this 
                                                                                state in marketing a good or service to a consumer is used in this 
                                                                                state if the marketed good or service is purchased by a consumer 
(a) if by reason of business activity in another state the taxpayer is          in this state. Franchise fees or franchise royalties received for the 
subject to one of these taxes: a net income tax, a franchise tax measured       rent, lease, license, or use of a trade name, trademark, service mark, 
by net income, a franchise tax for the privilege of doing business, or a        or franchise system, or the right to conduct business activity in a 
corporate stock tax; or                                                         specific geographic area, are receipts in this state to the extent that 
                                                                                the franchise is located in this state.
(b) if another state has jurisdiction to subject the taxpayer to a net 
income tax, regardless of whether or not that state imposes such a tax          • Sale of Intangible Property Receipts from the sale of intangible 
on the taxpayer.                                                                property are in this state to the extent the intangible property is 
                                                                                used in Missouri. If the intangible property sold is a contract right, 
The first test is applicable only if a taxpayer carries on business activities  government license, or similar property that authorizes the holder 
in another state. If the taxpayer voluntarily files and pays one or more of     to conduct a business activity in a specific geographic area, such 
such taxes when not required to do so by the laws of that state or pays         intangible property is used in Missouri if the geographic area 
a minimal fee for qualification, organization, or for the privilege of doing    includes all or part of Missouri. If receipts from the intangible 
business in that state, but:                                                    property sale are contingent on the productivity, use, or disposition 
                                                                                of the intangible property, these receipts shall be treated as receipts 
(a) does not engage in business activities in that state; or                    from the rental, lease, or license of intangible property. All other 
                                                                                receipt from a sale of intangible property shall be excluded from 
(b) does engage in some activity, not sufficient for nexus, and the             both the numerator and the denominator of the receipts factor.
minimum tax bears no relation to the corporation’s activities within such       If the state or states to which to assign receipts cannot be determined, 
state, the taxpayer is not “taxable” in another state.                          the state or states of assignment must be reasonably approximated and 
                                                                                you must attach a detailed statement explaining the basis of the 
The second test applies if the taxpayer’s business activities are sufficient    reasonable approximation.
to give the state jurisdiction to impose a net income tax under the 
Constitution and statutes of the United States. Jurisdiction to tax is not 
present where the state is prohibited from imposing the tax by reason of        PART 1, LINES 4 THROUGH 10 - ALLOCATION  
the provisions of Public Law 86-272, 15 U.S.C.A. Sections 381–385.              OF NON APPORTIONABLE INCOME

LINES 1, 2, AND 3 - RECEIPTS FACTOR                                             Complete Part 1, Lines 4 through 10 if the taxpayer has nonapportionable 
                                                                                income to allocate.
Complete Part 1, Lines 1 through 3.                                             For this purpose “commercial domicile” means the principal place from 
• The denominator of the receipts factor is generally all gross receipts        which the trade or business of the taxpayer is directed or managed. 
received by a taxpayer from transactions and activity in the regular            Rents and royalties from real or tangible personal property, capital 
course of its trade or business. However, receipts from hedging                 gains, interest, or patent or copyright royalties, to the extent that they 
transactions or from the maturity, redemption, sale, exchange,                  constitute nonapportionable income shall be allocated as follows:
loan, or other disposition of cash or securities (e.g. stocks, stock            (a) Net rents and royalties from real property located in this state are 
options, bonds) must not be included in either the numerator or                 allocable to this state.
denominator of the receipts factor. The numerator of the receipts 
factor is generally all gross receipts in Missouri from transactions            (b) Net rents and royalties from tangible personal property are allocable 
and activity in the regular course of the taxpayer’s trade or business.         to this state: (1) if and to the extent that the property is utilized in this 
                                                                                state; or (2) in their entirety if the taxpayer’s commercial domicile is in 
• Tangible Personal Property Receipts from the sale of tangible                 this state and the taxpayer is not organized under the laws of, or taxable 
personal property are in this state if the property is received in              in, the state in which the property is utilized. The extent of utilization of 
Missouri by the purchaser. Receipts from the rental, lease, or 
license of tangible personal property are in this state to the extent           tangible personal property in a state is determined by multiplying the 
that the tangible personal property is located in Missouri.                     rents and royalties by a fraction, the numerator of which is the number 
                                                                                of days of physical location of the property in the state during the rental 
• Real Property Receipts from the sale, rental, lease, or license of            or royalty period in the taxable year and the denominator of which is 
real property are in this state to the extent that the real property is         the number of days of physical location of the property everywhere 
located in Missouri.                                                            during all royalty or rental period during the taxable year. If the physical 
• Services Receipts from the sale of a service are in this state if and         location of the property during the rental or royalty period is unknown 
to the extent that the ultimate beneficiary is in Missouri. Generally,          or unascertainable by the taxpayer, tangible personal property is utilized 
the ultimate beneficiary of the service (except for bartering and               in the state in which the property was located at the time the rental or 
similar in-kind transactions) is the entity that receives benefit or value      royalty payor obtained possession.
from, but does not also receive monetary or credit-based payment                (c) Capital gains and losses from sales of real property located in this 
in direct connection with, the service at issue (other than refunds,            state are allocable to this state.
cashback, or discount-equivalents). In the event that the ultimate 
beneficiary is a corporate or other entity that owns or operates in             (d) Capital gains and losses from sales of tangible personal property are 
locations in multiple states, and the extent to which the ultimate              allocable to this state if: (1) the property had a situs in this state at the time 
beneficiary is located in Missouri cannot reasonably be determined,             of the sale; or (2) the taxpayer’s commercial domicile is in this state and 
the extent to which the ultimate beneficiary is located in Missouri may         the taxpayer is not taxable in the state in which the property had a situs.
be reasonably approximated as follows: The ratio of the number of 
Missouri locations, which the ultimate beneficiary owns or operates in,         (e) Capital gains and losses from sales of intangible personal property are 
to the number of such locations throughout the United States.                   allocable to this state if the taxpayer’s commercial domicile is in this state.
                                                                                (f) Interest and dividends are allocable to this state if the taxpayer’s 
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commercial domicile is in this state.                                             Part 1, Lines 4 through 9), enter gross income allocated (as 
(g) Patent and copyright royalties are allocable to this state: (1) if and to     opposed to apportioned) everywhere and gross income allocated 
the extent that the patent or copyright is utilized by the royalty payor in       to Missouri, respectively, as well as related expenses. Attach a 
this state; or (2) if and to the extent that the patent or copyright is           detailed explanation supporting any allocation (as opposed to 
utilized by the royalty payor in a state in which the taxpayer is not taxable     apportionment) of income.
and the taxpayer’s commercial domicile is in this state. A patent is utilized 
in a state to the extent that it is employed in production, fabrication,          METHOD SEVEN INSTRUCTIONS
manufacturing, or other processing in the state or to the extent that a 
patented product is produced in the state. A copyright is utilized in a state     This method can only be used with prior approval from the Missouri 
to the extent that printing or other publication originates in the state. If      Director of Revenue or pursuant to a Missouri regulation creating an 
the basis of receipts from patent royalties or copyright royalties does not       alternative industry-specific method under Section 143.455.13(1), 
permit allocation to states or if the accounting procedures do not reflect        RSMo. Attach a detailed explanation of how any allocation and 
states of utilization, the patent or copyright is utilized in the state in which  apportionment was performed. Either a letter of approval must be 
the taxpayer’s commercial domicile is located.                                    attached to the return or the detailed explanation must identify the 
                                                                                  Missouri regulation that authorizes the industry-specific method 
                                                                                  used and explain why the taxpayer qualifies for the industry-specific 
METHOD THREE, FOUR, FIVE, OR SIX                                                  method. The only industry-specific method currently allowed by 
INSTRUCTIONS                                                                      Missouri regulation applies to broadcasters under 12 CSR 10-2.260 
                                                                                  Corporations defined as a broadcaster under 12 CSR 10-2.260 must 
Enter Missouri miles, total miles, and percentage in the Apportionment            choose Method Seven.
Election section on Form MO-MSS, page 1, if applicable. Enter the 
                                                                                  Complete Form MO-MSS, Part 1, Lines 3 through 12 and follow the 
resulting mileage percentage on Form MO-NRS, Parts 1 and 2, 
                                                                                  directions on Form MO-MSS, Pages 1 or 2 (as applicable) to arrive 
Column (c), unless required to complete Form MO-MSS, Part 1, Lines 
                                                                                  at the percentage(s) to be entered on Form MO-NRS, Column (c) 
3 through 10 as discussed below. If the mileage percentage on Form 
                                                                                  for each distributive share item. When completing Form MO-MSS, 
MO-MSS, Page 1, is inapplicable, attach a detailed explanation of how 
                                                                                  Part 1, Line 3, substitute the appropriate apportionment percentage 
apportionment and allocation was performed.
                                                                                  (without taking into account allocation of income) for the Receipts 
If the mileage percentage on Form MO-MSS, Page 1, is inapplicable                 Factor. When completing Form MO-MSS, Part 1, Lines 4 through 10 
or if there is any income to be allocated (as opposed to                          (including any attached table for distributive share items not listed 
apportioned), the taxpayer must complete Form MO-MSS, Part                        on Form MO-MSS, Part 1, Lines 4 through 9), enter gross income 
1, Lines 3 through 10 and follow the directions on Form MO-MSS,                   allocated (as opposed to apportioned) everywhere and gross income 
Pages 1 or 2 (as applicable) to arrive at the percentage(s) to be                 allocated to Missouri, respectively, as well as related expenses. 
entered on Form MO-NRS, Column (c) for each distributive share                    Include on the detailed explanation attachment support for any 
item. When completing Form MO-MSS, Part 1, Line 3, substitute                     allocation (as opposed to apportionment) of income.
the appropriate apportionment percentage, such as the mileage 
percentage (if applicable), for the Receipts Factor. When completing 
Form MO-MSS, Part 1, Lines 4 through 10 (including any attached 
table for distributive share items not listed on Form MO-MSS, 

                                               Final Checklist Before Mailing

  r  Did an officer of the corporation sign Form MO-1120S?

r  Did you review your completed return?

r  Are the corporation name, address, and  I.D. numbers correctly shown on the return?

r    Are your beginning and ending filing periods shown on the Form MO-1120S?

r  Have you verified all math calculations?

r    Did you receive a federal extension of time to file your return?  If so, have you attached a copy of 
   the federal extension (Federal Form 7004) and checked the box on the first page of the MO-1120S?

r  Have you attached a copy of the federal form and sup porting schedules?

r    Have you addressed your envelope to the proper address?

r    Did you enter your Missouri Tax I.D. Number? If you do not know your Missouri Tax I.D. Number, 
   an officer must call Business Registration at (573) 751-5860.

r      Did you enter your Charter Number?  If you do not know your Charter Number, call  
   (866) 223-6535.

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