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 Publication 5078 

 Assurance Testing System (ATS) Guidelines for 

 Modernized e-File (MeF) Business Submissions 

 For Processing Year 2023 
 
 Publication 5078  (Rev. 8-2022)  Catalog Number 61936X  Department of the Treasury Internal Revenue Service www.irs.gov 



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        TABLE OF CONTENTS 

 NATURE OF SUBSTANTIVE CHANGES ............................................................................ 4 

 BUSINESS FORMS COVERED BY TEST PACKAGE ........................................................ 5 

 PART 1 GENERAL INFORMATION ................................................................................. 6 
 1.1    Scenarios ....................................................................................................................... 6 
 1.2    Employer Identification Numbers (EINs) ......................................................................... 6 
 1.3    Known Issues and Solutions..................................................................................................... 6 

 PART 2  ATS INFORMATION APPLICABLE TO ALL FORM TYPES .............................. 6 
 2.1  WHO MUST TEST? ............................................................................................................. 6 
     2.1.1  IRS e-file Application and Participation ...................................................................... 6 
     2.1.2  Software Developers ................................................................................................. 7 
     2.1.3  Transmitters .............................................................................................................. 7 
     2.1.4  Large Taxpayers ....................................................................................................... 7 
 2.2  WHAT IS TESTED? ............................................................................................................. 7 
     2.2.1  Scenarios by Form Type ........................................................................................... 8 
     2.2.2  IP Address ................................................................................................................ 9 
 2.3  WHEN TO TEST .................................................................................................................. 9 
 2.4  WHY TEST? ......................................................................................................................... 9 
 2.5  TESTING GUIDELINES FOR SOFTWARE DEVELOPERS ................................................. 9 
     2.5.1  Questionnaire............................................................................................................ 9 
     2.5.2  Submitting and Correcting Tests ............................................................................. 10 

 2.6  COMMUNICATIONS TEST FOR THE E-FILE SYSTEM .................................................... 10 
     2.6.1  Transmitting Returns ............................................................................................... 10 
 2.7  USING YOUR OWN TEST DATA ....................................................................................... 10 
 2.8  FEDERAL/STATE TESTING FOR FORMS 1120/1120S, 1065, 990/990 ............................ 11 
     EZ/990-PF and 1041 .......................................................................................................... 11 
 2.9  XML RESOURCES ............................................................................................................ 11 
 2.10  FORMATTING THE ENTITIES ........................................................................................... 12 
 2.11  LIMITATIONS OF THE ATS SYSTEM ................................................................................ 12 
 2.12  STRONG AUTHENTICATION ............................................................................................ 12 
 2.13  PASSWORDS .................................................................................................................... 12 
 2.14  SIGNATURE REQUIREMENTS ......................................................................................... 12 

 PART 3  ATS INFORMATION FOR SPECIFIC FORM TYPES ........................................ 13 
 3.1  CORPORATION RETURNS - FORMS 1120, 1120-F and 1120S ....................................... 13 
     3.1.1  ATS Year for Corporation Returns........................................................................... 13 
     3.1.2  Special Instructions for Consolidated Corporate Returns ........................................ 13 
 3.2  PARTNERSHIP RETURNS - FORM 1065.......................................................................... 16 
     3.2.1  ATS Year for Partnership Returns ........................................................................... 16 
     3.2.2  Form 1065 - K-1 Aggregators .................................................................................. 17 
 3.3  EXEMPT ORGANIZATION RETURNS - FORMS 990, 990-EZ, 990-PF, 990-N, 990-T, 
                                        4720 and 1120 POL ........................................... 17 

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     3.3.1  ATS Year for Exempt Organization Returns ............................................................ 17 

 3.4  EXCISE TAX E-FILE AND COMPLIANCE( ETEC) RETURNS – FORMS 720, 2290,............. 
     and 8849 ............................................................................................................................ 17 
     3.4.1  ATS Year for Form 720 ........................................................................................... 17 
     3.4.2  ATS Year for Form 2290 ......................................................................................... 17 
     3.4.3  ATS Year for Form 8849 ......................................................................................... 17 
 3.5  EMPLOYMENT TAX RETURNS - FORMS 940, 940-PR, 941, 941-PR, 941-SS, 943, ........ 18 
     943-PR, 944 and 945 .......................................................................................................... 18 
     3.5.1  ATS Year for Employment Tax Returns................................................................... 18 
 3.6  ESTATE AND TRUST RETURNS - FORMS 1041 .............................................................. 19 
     3.6.1  ATS Year for Estate and Trust Returns ................................................................... 19 
 3.7  EXTENSIONS - FORMS 7004 and 8868 ............................................................................ 19 
     3.7.1  Form 7004, Application for Automatic Extension of Time To File Certain Business 
     Income Tax, Information, and Other Returns ........................................................... 19 
     3.7.2  Form 8868, Application for Extension of Time To File an Exempt Organization ....... 20 
     Return ......................................................................................................................... 
 3.8  INSTALLMENT AGREEMENT REQUEST - FORM 9465 ................................................... 20 
 3.9  ANNUAL WITHHOLDING TAX RETURN FOR U.S. SOURCE INCOME OF FOREIGN 
     PERSONS – FORM 1042.....................................................................................................20 

 PART 4 MODERNIZED EFILE (MeF) SCHEMAS AND BUSINESS RULES NEW 
 RETRIEVAL SYSTEM .................................................................................................................... 20 
 4.1 ESERVICES ACCOUNT ........................................................................................ 20 
 4.2 MEF  MAILBOX ................................................................................................................... 20 

 PART 5  EXHIBITS ............................................................................................................ 21 
 5.1  EXHIBIT 1 - STANDARD POSTAL SERVICE STATE ABBREVIATIONS AND ZIP ................ 
     CODES .............................................................................................................................. 21 
 5.2  EXHIBIT 2 - FOREIGN COUNTRY CODES LISTING ......................................................... 21 
 5.3  EXHIBIT 3 - ATS SCENARIOS ........................................................................................... 21 
 5.4  EXHIBIT 4 - VALID EINS .................................................................................................... 21 

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 NATURE OF SUBSTANTIVE CHANGES 
 
                   Section                       Change 
 ALL                           This publication was updated to reflect tax 
                               information for Processing Year 2023. 

 Table of Contents             Added Form 1042 - Annual Withholding Tax 
 2.2.1                         Return for U.S. Source Income of Foreign Persons 
 3.9 
 Table of Contents             Added Form 5227 
 2.2.1 
 3.3 
 Table of Contents             Added Form 5330 
 2.2.1 
 3.3 
 Table of Contents             Added Form 8038-CP 
 2.2.1 
 3.3 
 3.3.1 

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 BUSINESS FORMS COVERED BY TEST PACKAGE 
 
 Form                                    Title 
 720      Quarterly Federal Excise Tax Return 
 94x      On-Line Signature PIN Registration 
 940      Employer's Annual Federal Unemployment (FUTA) Tax Return 
 940-PR   Planilla para la Declaración Federal Anual del Patrono de la 
          Contribución Federal para el Desempleo (FUTA) 
 941      Employer's QUARTERLY Federal Tax Return 
 941-PR   Planilla para la Declaración Federal TRIMESTRAL del Patrono 
 941-SS   Employer's QUARTERLY Federal Tax Return (American Samoa, 
          Guam, the Commonwealth of the Northern Mariana Islands, and 
          the U.S. Virgin Islands) 
 943      Employer's Annual Federal Tax Return for Agricultural Employees 
 943-PR   Planilla para la Declaración Anual de la Contribución Federal del 
          Patrono de Empleados Agrícolas 
 944      Employer's Annual Federal Tax Return 
 945      Annual Return of Withheld Federal Income Tax 
 990      Return of Organization Exempt From Income Tax 
 990-EZ   Short Form Return of Organization Exempt From Income Tax 
 990-N    Electronic Notice (e-Postcard) 
 990-PF   Return of Private Foundation or Section 4947(a)(1) Trust Treated 
          as Private Foundation 
 990-T    Exempt Organization Business Income Tax Return 
 1041     U.S. Income Tax Return for Estates and Trusts 
 1042     Annual Withholding Tax Return for U.S. Source Income of Foreign 
          Persons 
 1065     U.S. Return of Partnership Income 
 1120     U.S. Corporation Income Tax Return 
 1120-S   U.S. Income Tax Return for an S Corporation 
 1120-F   U.S. Income Tax Return of a Foreign Corporation 
 1120-POL U.S. Income Tax Return for Certain Political Organizations 
 2290     Heavy Highway Vehicle Use Tax Return 
 4720     Return of Certain Excise Taxes Under Chapters 41 and 42 of the 
          IRC 
 5227     Split-Interest Trust Information Return 

 5330     Return of Excise Taxes Related to Employee Benefit Plans 

 7004     Application for Automatic Extension of Time To File Certain 
          Business Income Tax, Information, and Other Returns 
 8038-CP  Return for Credit Payments to Issuers of Qualified Bonds 

 8849     Claim for Refund of Excise Taxes 
 8868     Application for Extension of Time To File an Exempt Organization 
          Return 
 9465     Installment Agreement Request 

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 PART 1  GENERAL INFORMATION 
 
 Publication 5078, Modernized e-File (MeF) Test Package Business Submissions contains general 
 and program specific testing information for use in completing the Assurance Testing System (ATS) 
 process. The Assurance Testing System is a process to test software and electronic transmissions 
 prior to accepting Software Developers, K-1 Aggregators, Transmitters and Large Taxpayers into 
 the MeF Program. Assurance Testing is an annual process that tests the tax preparation software 
 and/or the electronic  transmissions for each Software Developer, transmitters, and large taxpayers 
 wanting to participate in the MeF Program. In order to participate in the MeF Program, each 
 Software Developer must pass testing for each form type and each tax year that they support. 
 Transmitters are only required to perform a Communications Test their first year. 
 
 1.1 Scenarios 
 ATS scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e-file-mef- 
 assurance-testing-system-ats webpage. 
 
 1.2  Employer Identification Numbers (EINs) 
 
 All EINs for Federal business ATS scenarios will begin with “00.” Business Rule R0000-148 has 
 been implemented in the ATS environment to reject any Federal business submission without a 
 Filer EIN beginning with “00” in the Return Header. There will be no predetermined name controls. 
 In order to accommodate the expanded range of EINs for business submission testing, the 
 EIN/name control Business Rules will be disabled in ATS. 
 
 Note: See Exhibit 4 for a complete list of the Test EINs for BMF Forms. 
 
 1.3  ATS Known Issues and Solutions 
 
 The ATS Known Issues and Solutions documents are developed to identify and provide interim 
 solutions to ATS issues identified with Schemas, Business Rules and Stylesheets for each form 
 family in the MeF System. 

 Known Issues and Solutions are posted on the following link: 
 
 https://www.irs.gov/e-file-providers/modernized-e-file-mef-assurance-testing-system-ats 
 
 PART 2  ATS INFORMATION APPLICABLE TO ALL FORM TYPES 
 
 2.1 WHO MUST TEST? 
 
     2.1.1  IRS e-file Application and Participation 
     Prior to testing, all Software Developers and Transmitters must obtain an Electronic 
     Transmitter Identification Number (ETIN) and an Electronic Filing Identification Number 
     (EFIN) through the e-file Application process. If a Software Developer intends to transmit 
     production submissions, they must register as both a Software Developer and Transmitter. 
     Refer to Publication 4164, Modernized e-File (MeF) Guide for Software Developers and 
     Transmitters. 

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     Refer to Publication 3112, IRS e-file Application and Participation, and 
     https://www.irs.gov/tax-professionals/e-file-provider-services 
     or 
     https://www.irs.gov/e-file-providers/become-an-authorized-e-file-provider for Online 
     Application procedures. 
 
     Software Developers and Transmitters using Application to Application (A2A) are required to 
     register the system(s) that will be used to conduct business with MeF to obtain Application 
     System IDs (ASIDs). If the systems are not registered, the Software Developer or 
     Transmitter cannot access MeF. 
 
     2.1.2  Software Developers 
 
     Software Developers are required to complete Assurance Testing using the applicable 
     scenarios available on the https://www.irs.gov/e-file-providers/modernized-e-file-mef- 
     assurance-testing-system-ats webpage to be accepted into the electronic filing program 
     each filing season. 
 
     Software Developers are issued a Test ETIN by the IRS to be used for software testing. 
     To allow year round testing, the SWD ETIN stays in Test mode. 
 
     2.1.3  Transmitters 
     Transmitters are required to complete communication testing, to transmit production returns 
     to the IRS, the first year only. They do NOT need to perform a communications test each 
     year. 
 
     Transmitters are issued a Production ETIN by the IRS. The Forms Transmission Status 
     (FTS) of all e-file Applications starts in Test mode. The FTS is updated, by the IRS, to 
     Production status after a Transmitter passes the required communication testing. If the 
     transmitter wants to test again, the "Forms Transmission Status" must be moved back to 
     "Test", which prevents transmission of live returns. 
 
     The ETIN assigned in the application process must be included in each message. 
 
     2.1.4  Large Taxpayers 
     Large Taxpayers are required to complete a communications test the first year only. They do 
     NOT need to perform a communications test each year. 
 
     Refer to Publication 4163 Modernized e-File (MeF) Information for Authorized IRS e-file 
     Providers for Business Returns for general information on Large Taxpayers. 
 
 2.2 WHAT IS TESTED? 
 
 All ATS scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e-file-mef- 
 assurance-testing-system-ats webpage. Each scenario includes a summary sheet that provides 
 all of the information needed to complete the scenario. The tax forms used in the scenarios may 
 not include information on every line. While it may appear the scenario is incomplete, the 
 absence of the data is intentional. For example, the software should populate any data that is 
 totaled or transferred from another form in the return. 

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 Test returns include a limited number of forms and schedules. It is not possible to represent all 
 possible conditions in these tests. 
 
 Test returns must be correctly prepared and computed before transmission. The IRS strongly 
 recommends each return be run against a parser prior to transmission. IRS processing consists 
  of two steps: Schema validation through a parser and Business Rule validation. 
 
 Use a separate Software ID and perform ATS testing for each software package. 
 
 Caution: To protect confidential tax and other sensitive information, do not use actual taxpayer 
 information in the testing environment. 
 
 2.2.1  Scenarios by Form Type 
 The Assurance Testing System (ATS) consists of the following number of scenarios for each 
 form type: 
 
            Form Type                    Number of Scenarios 
            94x ( Annual )               12 
            94x ( Quarterly )            5 
            94x (On-Line Signature PIN)* 1 
                      720                3 
                      990                3 
                      990-EZ             2 
                      990-N              4 
                      990-PF             3 
                      990-T              7 
                      1041               6 
                      1042               3 
                      1065               4 
            1065 - K-1 Aggregators       2 
                      1120               4 
                      1120-F             1 
                      1120-POL           2 
                      1120-S             4 
                      2290               3 
                      4720               5 
                      5227               5 
                      5330               7 
                      7004               5 
                              8038-CP    7 
                      8849               6 
                      8868               3 
                      9465               1 
 
        *Note: 94x On-Line Signature - These PIN Scenarios are the same for 
        94x, Annual and Quarterly forms. Also, each of the Scenarios are 
        posted as #12.

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     2.2.2  IP Address 
     The IP Address for business submissions is located in the ReturnHeader Schema. 
 
     Use the following IP Address in the scenarios: 
     • 192.168.2.1 or 
     • Any valid public IP Address that meets the correct schema format 
 
 2.3 WHEN TO TEST 
 
 Software Developers should notify the e-help Desk toll-free at 1 (866) 255-0654 when they are 
 ready to test. An e-help Desk assistor will assist with all preparations needed to begin testing, 
 including the assignment of a Software ID to submit returns. 
 
 Note: Software Developers need a new Software ID for each tax year and each tax package they 
 support. 
 
 2.4 WHY TEST? 
 
 The purpose of testing prior to live processing is to ensure that: 
 
 •  IRS can receive and process the electronic returns. 
 •  Returns have fewer validation and math errors. 
 •  Transmitters use the correct format according to the IRS MeF electronic filing specifications. 
 •  Transmitters can retrieve responses from MeF, including acknowledgement files, State 
     returns and State status records. 
 •  Filers understand and are familiar with the mechanics of electronic filing. 
 
 The IRS strongly recommends that Software Developers use the ATS system to retest when there 
 are Schema changes. 
 
 2.5 TESTING GUIDELINES FOR SOFTWARE DEVELOPERS 
 
 The IRS does not require a software product to offer all forms or schedules, or for all scenarios of a 
 particular form or schedule. 
 
     2.5.1 Questionnaire 
 
     To begin testing, Software Developers must complete and submit an IRS questionnaire 
     prior to testing indicating the forms and schedules they support. Go to IRS.gov and search 
     “MeF Testing” for additional information.

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     2.5.2  Submitting and Correcting Tests 
     Software Developers must test the complete form with no field limitations except for the 
     number of occurrences. In addition, all tax types must be tested if they will be filed in 
     production. For example, if Forms 1120 and 1120S were initially tested and now an 
     additional Form 1120-F is supported, Form 1120-F must be tested and approved before 
     submitting live versions of the form. 
      
     Software Developers may transmit as many test returns as necessary until all scenarios are 
     accepted. All Business Rule rejects must be corrected to pass ATS. 
 
 2.6 COMMUNICATIONS TEST FOR THE E-FILE SYSTEM 
 
 Transmitters must use accepted software to prepare and transmit returns and must complete a one- 
 time error free communications test. Further communications testing is not required when adding 
 additional forms. Software Developers, who will not transmit, are not required to perform a 
 communications test. 
 
 2.6.1  Transmitting Returns 
 IRS allows two transmission methods for MeF: 
 
      •  Internet Filing Application (IFA) 
      •  Application to Application (A2A) 
 
 Transmitters must perform communications testing using the transmission method(s) that will 
 be used for production. 
     •  If only one method will be used (IFA or A2A), then that method must be tested. 
     •  If both methods will be used (IFA and A2A), then both methods must be tested. 
 
 2.7 USING YOUR OWN TEST DATA 
 
 All forms included in each schema package are available for testing in ATS. Software Developers 
 are not limited to testing only the forms provided in the scenarios. The IRS strongly recommends  
 Software Developers use the ATS system to test all forms supported by the software prior to the 
 filing season. 
 
 After passing ATS testing, Software Developers may continue testing throughout the year with their 
 own data using the same Test ETIN. Transmitters can request a Test ETIN to continue testing, 
 because the IRS will update Forms Transmission Status to Production status once the 
 communications test is passed. Call the e-help Desk toll-free at 1 (866) 255-0654 to obtain a Test 
 (Type) ETIN, as a Transmitter. 
 
 Use the same taxpayer name and address information that is provided in the scenarios for 
 independent tests. See Exhibit 5.4, VALID EINS for test EINs for each tax type. 

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 The scenarios on the https://www.irs.gov/e-file-providers/modernized-e-file-mef-assurance- 
 testing-system-ats webpage have the most current draft forms and schedules available. Late 
 legislation could affect the content of these scenarios and related schemas. 
 
 2.8 FEDERAL/STATE TESTING FOR FORMS 1120/1120-S,1065, 990/990- 
     EZ/990-PF and 1041 
 
 There is not a separate testing program for states. Full ATS for Transmitters and states will be 
 available on October 24, 2022. Contact applicable or participating states for scenarios for state 
 returns. Transmitters should test Federal scenarios before attempting to test state scenarios. 
 
 •  Transmit Federal and State returns through A2A or IFA. 
 •  Retrieve State returns through A2A. 
 
 Participating States will allow filers to transmit State submissions as either “linked” or “unlinked.” 
 
 •  IRS forwards the State portion of a “linked” submission to the participating State if the 
     associated IRS return has been accepted. The Federal return and the “linked” State return 
     can be filed at the same time. IRS will process the Federal submission first and determine 
     the accepted or rejected status prior to processing the State submissions. 
 •  IRS forwards the “unlinked” (sometimes referred to as “State stand alone”) State submission 
     to the participating State regardless of whether or not a Federal return has been filed and 
     accepted. 
 •  Each participating State sets its own requirements for when to use a “linked” or “unlinked” 
     submission. 
 
 It is the responsibility of each State to determine whether or not software testing is passed. Each 
 State’s requirements and procedures may be found on their website. For further information on 
 State testing procedures, please contact the participating State office. 
 
 Additional information regarding States can be found on the Federation of Tax Administrators 
 website. 
 
 2.9 XML RESOURCES 
 
 Below are resources that relate to XML Schemas, software tools and parsers. The IRS does not 
 endorse any product and these resources are provided for information only. Any third party parser 
 toolkit can be utilized. 
 
   Altova XMLSpy XML Editor 
   Apache Project Directory 
   W3C XML Home Page 
   W3C XML Schema Home Page 
    xerces.apache.org/ 

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 2.10 FORMATTING THE ENTITIES 
 
 The business entities presented in scenarios are shown in common usage, with commas and 
 periods. Refer to Publication 4164, Modernized e-File (MeF) Guide for Software Developers and 
 Transmitters for proper formatting of business name lines and addresses using XML efileTypes. 
 Hyphens (-) and Ampersands (&) are the only non-alphanumeric characters allowed by IRS in entity 
 information. 
 
 Example: 
 
      Test Scenario: 
      Help For All, Inc. 
      31 Any Street 
      Anytown, MD 20901 
 
      XML Format: 
      Help For All Inc (BusinessNameLine1Type) 
      31 Any St (StreetAddressType) 
      Anytown (CityType) 
      MD (StateType) 
      20901 (ZipCodeType) 
 
 2.11 LIMITATIONS OF THE ATS SYSTEM 
 
 The MeF Assurance Testing System cannot handle stress or load testing. The configurations are 
 similar to the MeF Production System. When testing in the ATS environment, the response time is 
 slower than the Production environment. This is especially true for extremely large returns in one- 
 transmission or concurrent transmissions. 
 
 2.12 STRONG AUTHENTICATION 
 
 Refer to Section 4.1.2, Registration for A2A Credentials, in Publication 4164, Modernized e-File 
 (MeF) Guide for Software Developers and Transmitters for information on strong authentication. 
 
 2.13 PASSWORDS 
 
 Refer to Publication 4164, Modernized e-File (MeF) Guide for Software Developers and 
 Transmitters for information on passwords. 
 
 2.14 SIGNATURE REQUIREMENTS 
 
 Refer to Section 8, MEF ALTERNATIVE SIGNATURES, in           Publication 4164, Modernized e-File 
 (MeF) Guide for Software Developers and Transmitters for information on electronic signatures. 

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 PART 3  ATS INFORMATION FOR SPECIFIC FORM TYPES 
 
 3.1 CORPORATE RETURNS - FORMS 1120, 1120-F and 1120-S 
 
 •  Software Developers supporting clients that file Forms 1120-L and 1120-PC as subsidiaries 
     must develop their own scenarios including these forms and submit them for testing. 
      
     3.1.1  ATS Year for Corporate Returns 
     ATS testing for Corporation Returns is for Tax Year 2022 /Processing Year 2023. 
     Scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e-file-mef-
     assurance- testing-system-ats webpage. 

     3.1.2  Special Instructions for Consolidated Corporate Returns 
     MeF requires tax preparation software approved for electronic filing to use IRS forms for 
     reporting data for each subsidiary return. 
 
      •  The consolidated return tax preparation software approved for electronic filing must 
       allow taxpayers to create a separate “stacked return” for the parent and each 
       subsidiary return. 
      •  The tax preparation software must allow taxpayers to report Eliminations and 
       Adjustments as a separate “stacked return.” 
      •  The tax preparation software may also allow taxpayers to use spreadsheets for the 
       internal review of the return, but IRS requires all subsidiary data to be: 
 
       o  formatted, 
       o  transmitted, and 
       o  viewed by the IRS as “stacked returns” 

     MeF requires supporting data to be included in tax preparation software (see example 
     provided below) or attached as scanned PDF files. 
 
      •  The IRS reviews all of the forms and instructions attached to the corporate forms and 
       identifies every instance where taxpayers are required to attach supporting data. 
      •  The IRS provides structured formats to Software Developers or provides instructions 
       to enter supporting data as PDF files (in instances where IRS has not defined a 
       format). 
 
     When the IRS has defined structured formats, Software Developers are required to use 
     these formats for developing tax preparation software approved by IRS for electronic filing. 
 
      •  It is the responsibility of Software Developers to provide appropriate instructions for 
       taxpayers to enter supporting data to meet the IRS guidelines. 
      •  Most Software Developers will allow taxpayers to import/export data from other 
       sources. 
      •  Software Developers should discuss available options with the taxpayer to determine 
       how to prepare supporting data for their electronic return. 

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 When submitting a consolidated return, the software must provide detail for each entity at 
 the entity level and roll data up to the consolidated return. At a minimum, this roll-up 
 information must be provided on any line where the form requires a statement or schedule 
 to be attached (e.g., Form 1120, Line 10, Other Income (attach schedule), Line 26, Other 
 Deductions (attach schedule). 
 
 However, there are forms and schedules that are transactional or informational in nature 
 and cannot be mathematically consolidated or reported on the consolidated return. The 
 transactional data flows to the consolidated return via a different form or schedule and the 
 informational data is attached to the consolidated return. 
 
 For example, the Form 6252, Installment Sale Income, results for each transaction flow to 
 the Form 4797, Sales of Business Property and subsequently, the data on the Form 4797 
 flows to the consolidated return. The Form 8883, Asset Allocation Statement Under Section 
 338, provides informational data only and does not flow to any other schedule, form or a 
 consolidated return. 
 
 Below is an example based on the data provided in ATS, Form 1120, Scenario 2 for a 
 consolidated return. 
 
 Attachment 1, F1120, line 10, Other Income (ItemizedOtherIncomeSchedule) 
     Consolidated                      Hide 'N Seek         The Greek  Acme Food 
      Schedules           TOTAL        Foods, Inc.          Playhouse     Corp. 
 Sales                    217,441          208,671                        8,770 
 Exchange Gain/Loss                                                    
 Realized                 -2,321,468   -2,229,104                        -92,364 
 Partnership                                                           
 Income/Loss              50,559,438       -59,869          220,747      50,398,560 
 Miscellaneous Income     149,354          156,146                       -6,792 
 Interco Consulting                                                    
 Fees                     1,448,935        1,448,935 
       TOTAL              50,053,700       -475,221         220,747      50,308,174 
 
 The Parent (Hide ‘N Seek Foods, Inc) will provide the following data on the 
 ItemizedOtherIncomeSchedule: 
 
 Corporation      Corporation       Other Income Type            Other Income 
     Name             EIN                                             Amount 
 Hide ‘N Seek     00-0000002     Sales                           208,671 
 Foods, Inc. 
 Hide ‘N Seek     00-0000002     Exchange Gain/Loss              -2,229,104 
 Foods                           realized 
 Hide ‘N Seek     00-0000002     Partnership Income/Loss         -59,869 
 Foods 
 Hide ‘N Seek     00-0000002     Miscellaneous Income            156,146 
 Foods 
 Hide ‘N Seek     00-0000002     Interco Consulting Fees         1,448,935 
 Foods 
 Hide ‘N Seek     00-0000002     Total                           -475,221 
 Foods 

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 The first subsidiary (The Greek Playhouse) would provide the following data on the 
 ItemizedOtherIncomeSchedule: 
 
 Corporation    Corporation     Other Income Type           Other Income 
 Name           EIN                                         Amount 
 The Greek      00-0000012      Partnership Income/Loss     220,747 
 Playhouse 
 The Greek      00-0000012      Total                       220,747 
 Playhouse 
 
 The second subsidiary (Acme Food Corp) will provide the following data on the 
 ItemizedOtherIncomeSchedule: 
 
 Corporation    Corporation     Other Income Type           Other Income 
 Name           EIN                                         Amount 
 Acme Food Corp  00-0000013     Sales                       8,770 
 Acme Food Corp  00-0000013     Exchange Gain/Loss          -92,364 
                                realized 
 Acme Food Corp  00-0000013     Partnership Income/Loss     50,398,560 
 Acme Food Corp  00-0000013     Miscellaneous Income        -6,792 
 Acme Food Corp  00-0000013     Total                       50,308,174 
 
 The consolidated return should have an attachment for Other Income and the following data 
 must be provided in one of the following formats: 
 
 Format 1 - The ItemizedOtherIncomeSchedule for the consolidated return contains a roll-up 
 of the detail for each entity. 
 
 Corporation    Corporation     Other Income Type           Other Income 
 Name           EIN                                         Amount 
 Hide ‘N Seek   00-0000002      Sales                       208,671 
 Foods 
 Hide ‘N Seek   00-0000002      Exchange Gain/Loss realized -2,229,104 
 Foods 
 Hide ‘N Seek   00-0000002      Partnership Income/Loss     -59,869 
 Foods 
 Hide ‘N Seek   00-0000002      Miscellaneous Income        156,146 
 Foods 
 Hide ‘N Seek   00-0000002      Interco Consulting Fees     1,448,935 
 Foods 
 The Greek      00-0000012      Partnership Income/Loss     220,747 
 Playhouse 
 Acme Food Corp  00-0000013     Sales                       8,770 
 Acme Food Corp  00-0000013     Exchange Gain/Loss realized -92,364 
 Acme Food Corp  00-0000013     Partnership Income/Loss     50,398,560 
 Acme Food Corp  00-0000013     Miscellaneous Income        -6,792 
 Hide ‘N Seek   00-0000002      Total                       50,053,700 
 Foods, Inc. 

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     Note: Dependencies should be attached at the entity level and also rolled up to the 
     consolidated return. 
 
     Format 2 - The ItemizedOtherIncomeSchedule for the consolidated return contains a roll-up 
     of the total from each entity. 
 
     Corporation    Corporation      Other Income Type       Other Income 
     Name                 EIN                                Amount 
     Hide ‘N Seek   00-0000002       Total Other Income      -475,221 
     Foods, Inc. 
     The Greek      00-0000012       Total Other Income      220,747 
     Playhouse 
     Acme Food      00-0000013       Total Other Income      50,308,174 
     Corp 
     Hide ‘N Seek   00-0000002       Consolidated Total      50,053,700 
     Foods, Inc. 
 
     Note: Dependencies should be attached at the entity level and also rolled up to the 
     consolidated return. 
 
     Format 3 - The ItemizedOtherIncomeSchedule for the consolidated return contains a total of 
     all subsidiaries by category. 
 
     Corporation    Corporation      Other Income Type       Other Income 
     Name                 EIN                                Amount 
     Hide ‘N Seek   00-0000002       Sales                   217,441 
     Foods, Inc. 
     Hide ‘N Seek   00-0000002       Exchange Gain/Loss      -2,321,468 
     Foods                           realized 
     Hide ‘N Seek   00-0000002       Partnership Income/Loss 50,559,438 
     Foods 
     Hide ‘N Seek   00-0000002       Miscellaneous Income    149,354 
     Foods 
     Hide ‘N Seek   00-0000002       Interco Consulting Fees 1,448,935 
     Foods 
 
     Note: Dependencies should be attached at the entity level and also rolled up to the 
     consolidated return. 
 
 3.2 PARTNERSHIP RETURNS - FORMS 1065 
 
     3.2.1  ATS Year for Partnership Returns 
     ATS testing for Partnership Returns is for Tax Year 2022 / Processing Year 2023. 
     Scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e-file-
     mef-assurance-testing-system-ats webpage. 

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     3.2.2  Form 1065 - K-1 Aggregators 
     K-1 Aggregators are required to complete Assurance Testing using the applicable scenarios 
     available on the https://www.irs.gov/e-file-providers/modernized-e-file-mef-assurance- 
     testing-system-ats webpage to be accepted into the electronic filing program each filing 
     season. 
 
 3.3 EXEMPT ORGANIZATION RETURNS - FORMS 990, 990-EZ, 990-PF, 990-N, 
     990-T, 1120-POL, 4720, 5227, 5330, and 8038-CP 
 
 One Software ID may be used for Forms 990, 990-EZ, 990-N, 990-PF and/or 8868. Forms 990-T, 
 1120-POL, 4720, 5227, 5330 and 8038-CP all require their own separate Software ID. 
 
 There is a single Questionnaire that includes Forms 990, 990-EZ, 990-N, 990-PF and 8868.  
 There are separate Questionnaires for Forms 990-T, 1120-POL, 4720, 5227, 5330 and 8038-CP. 
 
     3.3.1  ATS Year for Exempt Organizations and Other Tax Exempt Entities Returns 
     ATS testing for Exempt Organization and Other Tax Exempt Entities Returns is for Tax 
     Year 2022/Processing Year 2023 with the exception of Form 8038-CP. The 8038-CP is 
     for Tax Year 2023/Processing Year 2023. Scenarios are available on the 
     https://www.irs.gov/e-file-providers/modernized-e- file-mef-assurance-testing-system-
     ats webpage. 
 
 3.4 EXCISE TAX E-FILE AND COMPLIANCE (ETEC) RETURNS - FORMS 720, 2290 
     and 8849 
 
 Scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e-file- 
 mef-assurance-testing-system-ats webpage. 
 
     3.4.1  ATS Year for Form 720 
     ATS testing for Form 720 is for Tax Year 2023/Processing Year 2023. 
         •  The scenarios for Form 720 are for the first quarter. If additional quarters need to be 
            tested, we will notify the Software Developers. 
 
     3.4.2  ATS Year for Form 2290 
     ATS testing for Form 2290 is for Tax Year 2022/Processing Year 2023. 
 
     3.4.3  ATS Year for Form 8849 
     ATS testing for Form 8849 is for Tax Year 2023/Processing Year 2023. 

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 3.5 EMPLOYMENT TAX RETURNS - FORMS 940, 940-PR, 941, 941-PR, 941-SS, 943, 
 943-PR, 944, 945 and 94x On-Line Signature PIN Registration 
 
     Software Developers supporting the 94x MeF Forms and 94x On-Line Signature PIN 
 Registration must use the MeF developed ATS Scenarios in order to pass ATS Testing. 
 Separate Software IDs are required for the 94x Annual Forms, 94x Quarterly Forms and 
 94x On-Line Signature PIN Registration. 
 
     •   A separate Software ID is issued for the 94x On-Line Signature PIN 
 Registration. The Software ID issued for the 94x Annual Forms and 94x Quarterly Forms 
 can no longer be used with the 94x On-Line Signature PIN Registration software package. 
 
     •   The Software ID for the 94x Annual Forms (Form 940, Form 940-PR, Form 
 943, Form 943-PR, Form 944, and Form 945) is issued with a unique 2-digit number after 
 the Tax Year indicator “YY” (YY88NNNN). For example, a Software ID issued for the Tax 
 Year 2022 94x Annual Forms software package will be in the format of 2288NNNN. 
 
     •   The Software ID for the 94x Quarterly Forms (Form 941, Form 941-PR, and 
 Form 941-SS) is issued with a unique 2-digit number after the Tax Year indicator “YY” 
 (YY99NNNN). For example, a Software ID issued for the Tax Year 2023 94x Quarterly 
 Forms software package will be in the format of 2399NNNN 
 
     3.5.1  ATS Year for Employment Tax Returns 
     For Processing Year 2023, the Employment Tax Return (94x) ATS Scenarios were 
     developed for the following tax years: 
 
       •  Tax Year 2022 
 
         Twelve ATS Scenarios were developed, and they include the following forms: 
 
         o  Form 940 
         o  Form 940-PR 
         o  Form 943 
         o  Form 943-PR 
         o  Form 944 
         o  Form 945 
 
     Note: Scenario #12 for the 94x On-Line Signature PIN will be posted on the Annual 
     and Quarterly pages. 
 
       •  Tax Year 2022 
         (Quarterly Forms Only) 
 
         Five ATS Scenarios were developed for the following forms: 
         o  Form 941 
         o  Form 941-PR 
         o  Form 941-SS 

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     Scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e- 
     file-mef-assurance-testing-system-ats webpage. 
 
 3.6 ESTATE AND TRUST RETURNS - FORMS 1041 
 
 Software Developers supporting the 1041 MeF Forms must use the MeF developed ATS Scenarios 
 in order to pass ATS Testing. 
 
 1041 MeF ATS testing includes: 
 
 •  Form 1041 
 •  Form 7004 
 
 Software Developers supporting the extension Form 8868 will complete the test scenarios for this 
 form in addition to the Form 1041 scenarios. 
 
     3.6.1  ATS Year for Estate and Trust Returns 
     ATS testing for Estate and Trust Returns is for Tax Year 2022/Processing Year 2023. 
     Scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e-file- 
     mef-assurance-testing-system-ats webpage. 
 
     The test data for the extensions are designed for returns other than Form 1041. If the 
     software is restricted to 1041 returns only, the Software Developer can send in the test 
     extension with 1041 data. For example, Form 7004 Return Code can be changed to “08”. 
 
 3.7 EXTENSIONS - FORMS 7004 and 8868 
 
Software Developers who support extension forms should identify Form 7004 and/or 8868 in the 
questionnaire as supported forms. Testing for extensions is required once per filing season. For 
example, Software Developers who support Forms 1120, 1065 and 1041 must complete Form 7004 
testing once. - Remove Chart (Form 7004 in no longer tested under different form families. See next 
update for 8868 change.) 
 
     3.7.1  Form 7004, Application for Automatic Extension of Time To File Certain 
     Business Income Tax, Information, and Other Returns 
 
     A separate software ID is required for Form 7004. Form 7004 extensions are not included in 
     the testing for Forms 1120, 1065, or 1041. Software Developers who support the Form 7004 
     extension must test the 7004 scenarios independently from the aforementioned forms. For 
     ATS testing, Form 7004 has its own testing procedures and has its own Software Developer 
     Questionnaire. 

                                                                                                 19 



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     3.7.2  Form 8868, Application for Extension of Time To File an Exempt Organization 
     Return 
 
               Add an additional paragraph at beginning of section to read: Form 8868 Extensions are  
               included in testing under the 990 form family. Software Developers who support Form 8868 will  
               identify it as a supported form in the 990 family questionnaire. 
 
     Individuals needing an extension of time to file Form 4720 using an SSN (Return Code 03) 
     must file in paper format. Corporations electronically extending Form 4720 should continue 
     to enter Return Code "09" and their EIN. 
 
     Form 8868, Application of Extension of Time to File an Exempt Organization Return, does 
     not require a signature if it is not submitted with a payment. If providing a payment, you may 
     use the Practitioner PIN or the scanned Form 8453-TE method to submit the extension 
     application and payment. 
     . 
 
 3.8 INSTALLMENT AGREEMENT REQUEST - FORM 9465 
 
 Installment agreement requests are included in testing under specific form families for out-of- 
 business sole-proprietors. Software Developers who support installment agreement requests 
 should identify Form 9465 in the questionnaire as a supported form. Form 9465 will only be 
 accepted as a stand-alone for these business tax types. 
 
       Installment Agreement Request                     Form Family 
                      9465                               720, 94x, or 2290 
 
 3.9 ANNUAL WITHHOLDING TAX RETURN FOR U.S. SOURCE INCOME OF FOREIGN 
     PERSONS – FORM 1042 
  
 ATS testing for Form 1042 will be new for Tax Year 2022 / Processing Year 2023. Scenarios 
 are available on the https://www.irs.gov/e-file-providers/modernized-e-file-mef-assurance-
 testing-system-ats webpage. 
  
 PART 4  MODERNIZED E-FILE (MeF) SCHEMAS AND BUSINESS RULES 
       RETRIEVAL SYSTEM 
 
 The Modernized e-File (MeF) Schemas and Business Rules are distributed to software providers 
 through the Registered User Portal – eServices Secure Object Repository (SOR). This information 
 is no longer available on IRS.gov. 
 
                                                                                                      20 



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 4.1 E-Services Account 

 Software providers use their existing e-Services account to pick up the Schema and Business 
 Rule packages. The IRS sends QuickAlert messages informing users when the Schema and  
 Business Rule packages are in their SOR accounts and ready for pick-up. 
 
 4.2 MeF Mailbox 

 The MeF Schema and Business Rule packages are available to Authorized Users listed on e- 
 File applications for Software Developers and States. Please contact the MeF Mailbox with the 
 Company Name, your Authorized User role and ETIN to request these packages. 

                                                                                               21 



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 PART 5  EXHIBITS 
 
 5.1 EXHIBIT 1 - STANDARD POSTAL SERVICE STATE ABBREVIATIONS AND ZIP 
     CODES 

 Standard Postal Service State Abbreviations and ZIP Codes are available on the Modernized e- 
 File (MeF) User Guides & Publications webpage. 
 
 5.2 EXHIBIT 2 - FOREIGN COUNTRY CODES LISTING 
 
 Foreign Country Codes are available on the Modernized e-File (MeF) User Guides & 
 Publications webpage. 
 
 5.3 EXHIBIT 3 - ATS SCENARIOS 
 
 ATS Scenarios are available on the https://www.irs.gov/e-file-providers/modernized-e- 
 file-mef-assurance-testing-system-ats webpage. 
 
 5.4 EXHIBIT 4 - VALID EINS 
 
 Use “00” as the pre-fix for all Federal and State business return EINs. The EIN ranges are 
 designated for each tax type. The “00” is enforced by a Business Rule for Federal returns. The EIN 
 ranges for State returns are recommended but are NOT enforced by a Business Rule. For 
 example: 
  
 00-9000000 through 00-9999999 is used for Exempt Organizations and Other Tax Exempt Entities 
 00-1000000 through 00-1999999 is used for ETEC 
 00-2000000 through 00-2999999 is used for 1065 
 00-3000000 through 00-3999999 is used for 94x 
 00-4000000 through 00-4999999 is used for 1041  
 00-5000000 through 00-5999999 is used for 1042 
 00-9000000 through 00-9999999 is used for Exempt Organizations and Other Tax Exempt Entities 
 
 The ranges can be separated between IRS and State usage. The States would determine their 
 specific ranges. As an example: 
 
 00-0000000 through 00-0199999 is used for 1120 Federal returns 
 00-0200000 through 00-0255555 is used for 1120 Alabama State Testing 
 00-0256666 through 00-0260000 is used for 1120 Arkansas State Testing 
 
 The States Federation of Tax Administrators (FTA) could divvy up the EINs between XX-X200000 
 thru XX-X999999 for externals to use for State Testing. 
 
 Please contact the e-help Desk toll-free at  (1  866) 255-0654 to provide any comments or feedback 
 about this Publication. 

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