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Reg 1 illinois 2026
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- Click ‘Get Form’ to open the REG-1 Illinois Business Registration Application in the editor.
- Begin by identifying your business or organization. Enter your Federal Employer Identification Number (FEIN) and select the appropriate organization type, such as Proprietorship, Partnership, or Corporation.
- Fill in your legal business name and any 'Doing-business-as' (DBA) names if applicable. Provide your primary business address, ensuring it is not a PO Box.
- Complete the contact information section, including a designated contact person for your business. This includes their email and phone number.
- Identify owners, officers, and general partners by providing their names, titles, and contact details as required. If necessary, attach Schedule REG-1-O for additional entries.
- Describe your business activities in detail. Indicate whether you will have employees and provide relevant dates for when these activities will begin.
- Review all sections for accuracy before signing at the end of the form. Ensure that you include any necessary schedules attached to your application.
- Finally, mail your completed application to the Illinois Department of Revenue at the specified address.
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reg 1 illinois instructions
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