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What is an Illinois Business Tax ID (IBT) number and how do I obtain one?

April 26, 2017Business IBT Id Illinois obtain tax

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What is an Illinois Business Tax ID (IBT) number and how do I obtain one?

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The Illinois Business Tax (IBT) number is the identification number assigned by the Illinois Department of Revenue and is obtained by registering with the agency. To register your business you may choose one of the following options: • Register electronically with the online Business Registration Application (fastest processing time). • Complete and mail Form REG-1, Illinois Business Registration Application. • Visit a regional office.