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.
How Illinois compares nationally
Across the 46 states that charge for a DBA filing, the average is about $36 (median $25). At $25, Illinois ranks #20 of 46 from the cheapest — below the national average.
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.