Do I need to register with the Illinois Department of Revenue?

You are required to register with the Illinois Department of Revenue if you are liable for reporting Sales and/or Use Tax (see Pub-113), sales for resale, sales of excise taxes, or withholding for Illinois employees (see Pub-130).

If you are required to register your business you may choose one of the following options:

• Register electronically using MyTax Illinois.
• Complete and mail Form REG-1, Illinois Business Registration Application.
• Visit a regional office.