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The material explains third-party disclosure designees, authorized signers, and the calculation starting point for Iowa taxable income. It details treatment of federal taxable income, NOL carryforwards, Schedule A and E adjustments, and mandatory electronic filing triggers and filing requirements by entity type.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":36,"@type":70,"position":76},"https://docshare.wps.com/template/forms/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/ia-1120-instructions-corporation-tax-return-processing/305091/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/ia-1120-instructions-corporation-tax-return-processing/305091.png","ImageObject",442,249,{"name":88,"@type":89},"Mali","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-15","2026-09-19",true,{"@type":98,"interactionType":99,"userInteractionCount":8},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"How are copies of schedules and forms obtained?","Question",{"text":108,"@type":109},"Copies of schedules and forms are available through the Department’s website at revenue.iowa.gov.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What is required regarding third-party disclosure and authorization?",{"text":113,"@type":109},"Taxpayers can authorize an individual to receive information about the return by entering the contact information above the signature line. The authorization is limited to discussing matters related to the return and does not grant authority to act on behalf of the taxpayer.",{"name":115,"@type":106,"acceptedAnswer":116},"When must Iowa corporation income taxpayers file electronically?",{"text":117,"@type":109},"Electronic filing is required for the tax year if the taxpayer meets listed conditions, such as having at least $250,000 in gross receipts, claiming $25,000 or more in tax credits, or filing a consolidated Iowa return.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},305091,1790526349,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":35,"category_name":36,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":8,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":76},2336475104362,"https://ap-avatar.wpscdn.com/avatar/22000c4c46a41b752dd?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786595829695023868","To obtain copies of schedules and forms:  \nAdditional information can be found on the Department’s website ([revenue.iowa.gov](revenue.iowa.gov)) .  \nQuestions:  \nEmail: [idr@iowa.gov](idr@iowa.gov)  \nPhone: 515-281-3114 or 1-800-367-3388 eFile or mail your return to:  \nCorporation Tax Return Processing Iowa Department of Revenue PO Box 10468  \nDes Moines IA 50306-0468  \nRecent Updates Amended Returns  \nNew lines 17a and 17b have been added for use by amended return filers only, to account for refunds and credit carryforwards already claimed for the tax year.  \nThird Party Disclosure Designee  \nTaxpayers have the ability to authorize an individual to receive information about this return by providing contact information for the person they wish to authorize. To do so, the taxpayer must enter the contact information in the section directly above the signature line. This authorization is limited to discussing or receiving information about matters related to this return and does not authorize the individual to act on behalf of the taxpayer. For example, the individual cannot sign a Power of Attorney (POA) form on behalf of the taxpayer.  \nAuthorized Signer  \nThe person who signs this return on behalf of the taxpayer must attest that they have authority to act on behalf of the taxpayer in tax matters. This attestation will give the signer full authority to interact with the Department on behalf of the taxpayer without the need to file an additional Representative Certification form. This includes the ability to discuss the return and other tax matters with the Department, to act on behalf of the taxpayer, and to appoint a POA to represent the taxpayer before the Department.  \nIowa Taxable Income (Line 1)  \nThe starting point for calculating Iowa net income is federal taxable income after the application of the federal net operating loss (NOL) deduction.  \nIA 124 Net Operating Loss  \nNOLs are no longer separately calculated for Iowa tax purposes. Taxpayers should use the IA 124 to calculate any pre-2023 federal NOL carryforward that must be added back or any pre- 2023 Iowa NOL that may be deducted. See IA 124 for more information.  \nSchedule A Adjustments  \nSeveral adjustments that were previously required on Schedule A have been repealed. These lines have been removed from the schedule and reserved for future use.  \nA new line has been added to Schedule A to report the deduction for Global Intangible LowTaxed Income (GILTI) amounts included in federal taxable income. These amounts were previously deducted on the “Other” line.  \nSchedule E  \nAll corporations are required to complete Schedule E, even if all corporate business is conducted in Iowa.  \nMandatory Electronic Filing  \nIowa corporation income taxpayers are required to file their annual returns electronically if they meet any of the following conditions for the tax year:  \n• The taxpayer has at least $250,000 in gross receipts.  \n• The taxpayer is claiming $25,000 or more in tax credits on the Iowa return for the year.  \n• The taxpayer is filing a consolidated Iowa return for the year.  \nSee Iowa Administrative Code rule 701-8.7 for definitions and other important information about the electronic filing requirement.  \nGeneral Instructions  \nWhich Return to File  \n• Regular Corporations: Every corporation doing business in this state or deriving income from sources within this state, unless exempt by Iowa Code section 422.34, must file an IA 1120 , Iowa Corporation Income Tax return.  \n• Cooperatives and Nonprofits Subject to Unrelated Business Income Tax (UBIT): Cooperative associations as defined in section 6072(d) of the Internal Revenue Code ( IRC) and entities subject to UBIT must file an IA 1120. Note: Nonprofit entities that are not otherwise required to file an Iowa income tax return, but are filing solely to claim an Iowa tax credit may qualify for an exception to the electronic filing requirement. In order to qualify for this exception eligible nonprofits must com","cbCait9cH5bVboLb","https://ap.wps.com/l/cbCait9cH5bVboLb","pdf",210923,9,"English","# General Instructions\n## Which Return to File\n## When to File\n# Recent Updates\n## Amended Returns\n# Third Party Disclosure Designee\n# Authorized Signer\n# Iowa Taxable Income (Line 1)\n# IA 124 Net Operating Loss\n# Schedule A Adjustments\n# Schedule E\n# Mandatory Electronic Filing","[{\"question\":\"How are copies of schedules and forms obtained?\",\"answer\":\"Copies of schedules and forms are available through the Department’s website at revenue.iowa.gov.\"},{\"question\":\"What is required regarding third-party disclosure and authorization?\",\"answer\":\"Taxpayers can authorize an individual to receive information about the return by entering the contact information above the signature line. The authorization is limited to discussing matters related to the return and does not grant authority to act on behalf of the taxpayer.\"},{\"question\":\"When must Iowa corporation income taxpayers file electronically?\",\"answer\":\"Electronic filing is required for the tax year if the taxpayer meets listed conditions, such as having at least $250,000 in gross receipts, claiming $25,000 or more in tax credits, or filing a consolidated Iowa return.\"}]","IA 1120 Instructions - Corporation Tax Return Processing | PDF",1789821917]