Illinois DBA / Fictitious Name / Trade Name Registrations
Business entities that plan to use a name other than their legal business name may need to register an assumed name. Assumed name registration can take place at the state, local, or state and local levels of government. State specific registration information is available below.
Illinois Fictitious Name Registrations
Illinois Assumed Name Adoption
Assumed Business Name
Varies by entity type and time of filing.
Reviewed within 24 hours of receipt.
|Is registration mandatory?:|
Registration of an assumed name is required for most entities that plan to use a fictitious name. Sole-proprietorships, general partnerships, and professional corporations that use an alternate name are required to file with the office of the county clerk.
805 ILCS 5-4.15 and 805 ILCS 405
|County Level Filing:|
Filing at the county level is required for sole-proprietorships, general partnerships, and professional service corporations.
|Does registration prevent others from using the name I choose?:|
Registration of an assumed name does not confer ownership rights.
Assumed Business Name Renewal
Varies by entity type.
Corporation and LLC assumed name registrations expire on calendar years that are divisible by 5. Renewals must be filed by the first day of the anniversary month of the corporation. County level assumed names do not expire, but you may need to reregister when business information changes.