How Much Does a DBA Cost in Illinois? (2026)
A DBA (“doing business as”) in Illinois costs $25 (set locally, so it varies), filed at the county clerk/recorder (county level). Newspaper publication is required. Registration renews: varies by county.
Verified July 2026 from official sources. How we verify fees.
What it costs and where to file in Illinois
- Filing fee: $25 (set locally)
- Filed at: County level
- Newspaper publication: Required
- Renewal: Varies by county
Good to know
Sole props file at the county clerk and must publish for 3 consecutive weeks in a local newspaper. A DBA lets a sole proprietor or existing business operate under a different name — it is not a business entity and offers no liability protection. If you want that, compare the cost of forming an LLC in Illinois.
Frequently asked questions
How much does a DBA cost in Illinois?
$25, set by the local clerk so it varies slightly, filed at the county clerk/recorder (county level). Newspaper publication is also required, which adds cost.
Where do I file a DBA in Illinois?
You file at the county clerk/recorder (county level).
Does a Illinois DBA expire?
Renewal: Varies by county. Publication requirements apply at the initial filing.