[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-301829-105":53,"doc-detail-301829-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","connecticut-state-business-tax-extension-instructions-business-tax-extension-filing-requirements","Connecticut State Business Tax Extension Instructions - Business Tax Extension Filing Requirements","","Guide for Connecticut businesses on meeting state tax compliance when additional time is needed. Explains the requirement to file a federal extension (Form 7004) and a separate Connecticut business extension form. Covers corporation extensions using Form CT-1120 EXT, key rules such as extending filing time only (not payment), estimated tax payment expectations, electronic filing and waiver procedures, mailing addresses, and tax period due-date timelines.",{"@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/connecticut-state-business-tax-extension-instructions-business-tax-extension-filing-requirements/301829/",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/connecticut-state-business-tax-extension-instructions-business-tax-extension-filing-requirements/301829.png","ImageObject",442,249,{"name":88,"@type":89},"Berry Peter","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-09-24","2026-09-19",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"Do Connecticut businesses need both a federal and a Connecticut tax extension?","Question",{"text":108,"@type":109},"Yes. Businesses file a federal extension using Form 7004 and also submit a separate Connecticut state extension form for additional time to file the Connecticut business income tax return.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"Does Form CT-1120 EXT extend the time to pay taxes due?",{"text":113,"@type":109},"No. Form CT-1120 EXT extends only the time to file the Connecticut corporation business tax return, not the time to pay the tax due.",{"name":115,"@type":106,"acceptedAnswer":116},"What payment requirement applies when filing a Connecticut business tax extension?",{"text":117,"@type":109},"You must pay estimated taxes and make payments on or before the original deadline. The payment must be at least 90% of the tax due to avoid late payment penalties.","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},301829,1790222712,{"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":47,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":8,"language":135,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":136,"faqs":137,"seo_title":138,"seo_description":61,"update_tm":139,"read_time":79},1374402524268,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Table of Contents  \n1. Connecticut State Filing Requirements for Businesses-An Overview  3  \n2. Connecticut State Tax Extension Filing Requirements  3  \n2.1. Tax Extensions for Corporations-An overview  3  \n2.2. Tax Extensions for Partnerships & S-Corporations-An overview  5  \n2.3. Tax Extensions for a Fiduciary-An overview  6  \n3. Does ExpressExtension Support Extensions with this State?  8  \n4. How to file a Business Tax Extension with the State of Connecticut?  8  \n5. About ExpressExtension  9  \n5.1. ExpressExtension-Pricing Packages  10  \n5.2. Special Packages for Business Owners, Individuals, & Nonprofits  10  \n5.3. ExpressGuarantee-We guarantee the approval of your IRS Tax  10 Extension!  \n 803-514-5155  \n [support@expressextension.com](support@expressextension.com)  \n2  \n1. Connecticut State Filing Requirements for Businesses-An Overview  \nEach year, businesses operating out of Connecticut must report their income taxes to the state and pay taxes to the Connecticut State Department to maintain their compliance. To collect income-related information from businesses, the State of Connecticut created separate business income state tax forms to be filed with the state. The state forms vary based on whether the business is taxed as a C-Corporation, S-Corporation, partnership, fiduciary, trust, estate, etc.  \nBusiness owners in Connecticut must file their state tax forms by the deadline to avoid penalties.  \nIf businesses need additional time to complete their state tax returns, there are options for extending the deadline by filing state-specific extension forms with the designated state agency.  \nKeeping up with all the business requirements at the federal level and the state level can be overwhelming. To help business owners better understand their tax extension options and payment requirements, we created this guide!  \n2. Connecticut State Tax Extension Filing Requirements  \nIn addition to filing a federal tax extension Form 7004, businesses are required to file a separate state extension form.  \nBusinesses operating in Connecticut (Corporations, Partnerships, S-Corporations, and fiduciaries) are required to file a separate Business Tax Extension form for an extension of time to file a Connecticut Business income tax return.  \n2.1. Tax Extension for Corporations-An overview  \nBusinesses in Connecticut that can’t file their Form CT-1120, Connecticut Corporation Business Tax Return and Form CT-1120 CU, Combined Unitary  \nCorporation Business Tax Return on time, they can request a 6-month extension of time by electronically filing Form CT-1120 EXT, Application for Extension of Time to File Corporation Business Tax Return.  \nForm CT-1120 EXT only extends the time to file the Connecticut Corporation Business tax return and not the time to pay the amount of tax due.  \nYou must pay your estimated taxes and file Form CT-1120 EXT electronically. If you want to pay the tax due by mail and paper file Form CT-1120 EXT, you will have to  \n803-514-5155  \n[support@expressextension.com](support@expressextension.com)  \n3  \nrequest a waiver from electronic filing and payment. To request a waiver from electronic filing requirements visit [https://portal.ct.gov/DRS](https://portal.ct.gov/DRS) and complete Form DRS-EWVR, Electronic Filing and Payment Waiver Request.  \nIf you have received a waiver from electronic filing and payment requirements, you can file your Connecticut Business tax extension with ExpressExtension in minutes. Our application validates your form by performing an internal audit to check for errors. Once complete, all you need to do is print your form and mail it to the address we’ve provided.  \n2.1.1. Deadline to file Corporation Tax Extension with the State of Connecticut  \n\n| Extension Form | Tax Period Ends on | Actual Due Date | Extension Period |\n| --- | --- | --- | --- |\n| Form CT-1120 EXT | June 30 | 15th day of the 4th month after tax year ends (October 15) | 7-month extension |\n|  | For all other tax year endings ","cbCaigRuGgMK9G3v","https://ap.wps.com/l/cbCaigRuGgMK9G3v","pdf",659494,"English","# Connecticut State Filing Requirements for Businesses - An Overview\n# Connecticut State Tax Extension Filing Requirements\n## Tax Extensions for Corporations - An overview\n## Tax Extensions for Partnerships & S-Corporations - An overview\n## Tax Extensions for a Fiduciary - An overview\n# Does ExpressExtension Support Extensions with this State?\n# How to file a Business Tax Extension with the State of Connecticut?\n# About ExpressExtension\n## ExpressExtension - Pricing Packages\n## Special Packages for Business Owners, Individuals, & Nonprofits\n## ExpressGuarantee - We guarantee the approval of your IRS Tax Extension","[{\"question\":\"Do Connecticut businesses need both a federal and a Connecticut tax extension?\",\"answer\":\"Yes. Businesses file a federal extension using Form 7004 and also submit a separate Connecticut state extension form for additional time to file the Connecticut business income tax return.\"},{\"question\":\"Does Form CT-1120 EXT extend the time to pay taxes due?\",\"answer\":\"No. Form CT-1120 EXT extends only the time to file the Connecticut corporation business tax return, not the time to pay the tax due.\"},{\"question\":\"What payment requirement applies when filing a Connecticut business tax extension?\",\"answer\":\"You must pay estimated taxes and make payments on or before the original deadline. The payment must be at least 90% of the tax due to avoid late payment penalties.\"}]","Connecticut State Business Tax Extension Instructions - Business Tax Extension Filing Requirements | PDF",1789785728]