Illinois DBA

In Illinois you can file your DBA (a.k.a. trade name, assumed name or fictitious business name) yourself with your local County Clerk's office. Or, use a legal document service such as LegalZoom to handle the entire process for you.

LegalZoom charges $99.00 plus state filing fees for Illinois DBA's. Click here to learn more about pricing.

What is a DBA?

DBA, short for "doing business as", is a formal declaration that an individual, company or organization is conducting business under a different name. DBA's are commonly referred to as a fictitious business names, assumed business and trade names. All these terms mean the same thing. Read more.

What is the difference between a fictitious business name and a DBA “doing business as” name? Read More

If I have a corporation or an LLC name, do I also have to file a DBA under that name as well? Read More

If I am operating a sole proprietorship under my personal name, do I need to file a DBA? Read More

Illinois Small Business Statistics

(Information provided by U.S. Census Bureau)

		Number of Establishments by Employment-size class
Industry Code	Total Establishments	'1-4'	'5-9'	'10-19'
11	311	51	24	23
21	325	87	84	58
22	191	66	60	81
23	19,606	4,881	2,931	1,788
31	5,314	2,698	2,750	2,767
42	10,476	3,961	2,926	2,066
44	19,043	11,256	6,963	4,042
48	5,818	1,338	1,025	876
51	2,864	879	750	619
52	13,203	4,082	2,637	1,671
53	8,248	2,107	1,245	453
54	25,718	4,945	3,105	1,909
55	742	293	305	351
56	8,636	2,085	1,533	1,314
61	1,328	414	397	463
62	13,175	6,371	4,160	2,399
71	2,395	547	458	433
72	9,054	4,142	4,466	4,738
81	19,394	7,144	3,854	1,774
95	162	91	125	93
99	840	38	8	2
Total	166,843	57,476	39,806	27,920

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• Trademarks
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• Can someone else use my business name if I have a DBA?
• What are the publication requirements?
• Can I conduct business and open a bank account before my DBA has been filed?
• How will I know if my business name is already being used? Will you perform a name check before filing my DBA form?
• What is a DBA?
• Using your DBA
• DBA Requirements