How Do I Know If My Business Is Registered

person on a computer

You must register with the Illinois Department of Revenue if y'all behave business in Illinois, or with Illinois customers. This includes sole proprietors (individual or husband/wife/ceremonious union), exempt organizations, or government agencies withholding for Illinois employees.

To register your concern you must

electronically register through MyTax Illinois (approximately i to two days to process);
consummate and mail Form REG-1, Illinois Business organisation Registration Application, to u.s. at the address on the course (Class REG-1 is available on our web site as a fill up-in and savable form. Registration forms are also available past calling us at one 800 356-6302.); or
visit one of our offices.

In addition, you lot may have to complete corresponding schedules, such as

Schedule REG-1-A, Liquor Information,
Schedule REG-1-C, Cigarette and Tobacco Products Information,
Schedule REG-1-D, Electricity Tax Self-Assessing Purchaser,
Schedule REG-1-G, Gas Use Tax Self-Assessing Purchaser,
Schedule REG-i-L, Illinois Concern Site Location Information,
Schedule REG-1-MR, Illinois Cigarette Manufacturer'due south Representative,
Schedule REG-1-O, Owner and Officer Information,
Schedule REG-1-R, Responsible Party Information, and
Schedule REG-1-T, Telecommunications Tax Location Information.

Please let 6 to 8 weeks for processing if you complete and mail Grade REG-ane to usa.

If applicative, you volition receive your certificate of registration and taxpayer ID (i.due east., your "tax" number) in the mail.

Register with us, using i of the above methods, before yous brand whatever purchases, sales, or when you lot hire an employee. You lot must display your Certificate of Registration in a prominent location in the place of business concern to which it applies.

If your business is already registered and your data changes (eastward.one thousand., accost change, ownership change, additional tax responsibilities, new location), update your registration information

electronically through MyTax Illinois,
by calling usa at 217-785-3707, or
at ane of our offices.

If y'all do non,

your returns and payments may not be processed correctly;
we may send you lot a tax neb or notice; and
you may not receive the forms or needed information about taxation law changes.

Contact u.s.a., at 217-785-3707, if y'all do not receive forms to file for your tax responsibilities.

If you lot prefer, you may as well contact our Central Registration Division past postal service.

Key Registration Division
Illinois Department of Revenue
PO Box 19030
Springfield IL 62794-9030

Additionally, find answers to your frequently asked revenue enhancement questions and more with our Taxpayer Answer Center. If you are unable to find your answer after searching the Taxpayer Reply Middle, you may contact us via email past using the "Questions, Comments, or Requests" link at the lesser of every Question & Answer page.