Can I still register online if the system will not accept my address?

Addresses that have been newly added or recently annexed may not be recognized by the United States Postal Service. In these instances, you cannot use these addresses on the online business registration application. You must register in person at a regional office or by mail by filling out Form REG-1, Illinois Business Registration Application, or call 217 785-3707.

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Individual Income Tax Business/Withholding Income Tax Sales and Use Tax Business Registration Local Government Motor Fuel Tax Excise Tax Property Tax Electronic Filing

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