50-State Sales Tax Compliance Guide
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Illinois Sales & Use Tax Licensing

Licensing requirements for Illinois businesses.

Business entities that sell tangible goods or offer services may need to register for sales and use taxes at the state level. Most states require businesses to either incorporate or foreign qualify prior to registering for a sales and use tax account, and many states also ask for the IRS issued EIN number as a part of tax registration.

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Sales & Use Tax Licensure

This section applies to businesses that are applying for a license in Illinois for the first time.

Agency:Illinois Department of Revenue

Form REG-1: Illinois Business Registration Application

Filing Method:

Mail or online.

Agency Fee:



For sales tax registration, also attach schedule REG-1-L: Business Site Location Information.

Remote Sales Threshold:

$100,000 in sales or 200 separate transactions

Enforcement Start Date: