File a DBA in Illinois
A DBA lets your business trade under another name in Illinois. State filing; fee set by year ($120 in a year ending in 6); no publication.
Illinois details
- State fee
- $120
- How it's filed
- online or mail
- Form
- LLC 1.20 / BCA 4.15 Assumed Name
Where it's filed. Last checked October 2026. Fees are set by the state and confirmed again before we file.
File my DBA
$99 + state or county fee, for any company.
Questions
What is a DBA?
A registered trade name. Your company keeps its legal name and can also do business, advertise and take payment under this one.
Does a DBA protect my name?
No. It doesn't stop anyone else using the name. A trademark does that.
Do I need an LLC to get a DBA?
No. Sole proprietors can register one too. It just doesn't separate your business from your personal assets the way an LLC does.