https://www2.illinois.gov/business/registration-licenses-permits/IDOR/Business Registration-taxes-revenue
Business Registration
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Learn more about registration requirements for Illinois businesses.
https://www2.illinois.gov/business/registration-licenses-permits/DCEO/start-business
Start a Business
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We offer a wide range of resources for those looking to start a business any where in Illinois. Find information on all the help we offer here
https://www2.illinois.gov/business/manage-your-business/SOS/llc-name
Corporate & Limited Liability Company (LLC) Name Search
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Corp and LLC Certificate of Good Standing allows you to search for information regarding corporations, not-for-profit corporations, limited partnerships, limited liability companies and limited liability partnerships, as well as, other business-related information.
https://www2.illinois.gov/business/manage-your-employees/IDOR/verify-registered-business
Verify a Registered Business
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Verify an Illinois Business Registration here.
https://www2.illinois.gov/business/manage-your-business/SOS/locate-reg-bus-names
Locate Registered Business Names
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On here twice: Corp and LLC Certificate of Good Standing allows you to search for information regarding corporations, not-for-profit corporations, limited partnerships, limited liability companies and limited liability partnerships, as well as, other business-related information.
https://www2.illinois.gov/business/manage-your-business/SOS/llc-filings
Corporation & Limited Liability Corporation Online Filings
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Business Services Home Page allows you to access the areas of Business Services and their forms.
https://www2.illinois.gov/business/manage-your-employees/IDOR/unemployment-wage-withholding
Unemployment Tax, Wage Reports, & Withholding Filing
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File your Employer’s Quarterly Contribution and Wage Report (UI-3/40) online with Illinois Taxnet.
https://www2.illinois.gov/business/manage-your-business/ILCC/liquor-lookup
Liquor License Lookup
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Search for Illinois liquor licensees online.
https://www2.illinois.gov/business/manage-your-business/GOV/illinois-business-information
Illinois Business Information
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Links to information and resources for starting, running, expanding, relocating, or closing a business
https://www2.illinois.gov/business/registration-licenses-permits/IDOR/business-tax-registration
Business Tax Registration Online
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File your Illinois Business Registration Application online with MyTax Illinois
https://www2.illinois.gov/business/consumers/IDOR/copy-tax-return
Obtaining a Copy of a Tax Return
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Access information on filing Form IL-4506 to obtain a copy of a state tax return.
https://www2.illinois.gov/business/registration-licenses-permits/IDOA/pet-kennel-dog-cat
Animal Health and Welfare Licenses - Pets
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The application must be submitted by all who want to become the operator of a pet shop, cattery, dog dealer, kennel, animal control facility, or animal shelter.