Illinois Fictitious Business Name — Frequently Asked Questions
What is a Fictitious Business Name?
A Fictitious Business Name — commonly called a DBA (Doing Business As) — is a registration that lets you operate a business under a name different from your legal name. In Illinois, this filing is officially known as a Fictitious Business Name registration. It's required if you want to use a business name that isn't your personal legal name (for sole proprietors and partnerships) or your entity's registered name (for LLCs and corporations).
Where do I file a Fictitious Business Name in Illinois?
In Illinois, Fictitious Business Name filings are handled at the county level. You file with the county clerk's office in the county where your business operates. Illinois has 102 counties, each with its own filing office and fee schedule.
How much does it cost to file a Fictitious Business Name in Illinois?
Our service fee is a flat $99. County filing fees are separate and vary by county. See our full cost breakdown for details.
How long does it take to get a Fictitious Business Name in Illinois?
Most Fictitious Business Name filings in Illinois are processed within 5-10 business days after submission. Processing times vary depending on the county and their current workload.
Do I need a Fictitious Business Name if I have an LLC?
It depends. If you want your LLC to operate under a name different from its registered entity name, then yes — you need a Fictitious Business Name filing. If you plan to do business only under your LLC's registered name, you do not need a separate Fictitious Business Name.
Does a Fictitious Business Name protect my business name?
A Fictitious Business Name registration gives you the right to use the name in your filing jurisdiction, but it does not provide the same level of protection as a trademark. For stronger name protection, consider filing a federal trademark with the USPTO.
How long does a Fictitious Business Name last in Illinois?
Fictitious Business Name registrations in Illinois typically last 5 to 10 years before they need to be renewed. The exact term depends on your county. See our renewal guide for more details.
Can I file a Fictitious Business Name online in Illinois?
Yes. We handle the entire Fictitious Business Name filing process online. You provide your information through our simple form, and we prepare and submit the paperwork to the county clerk's office in the county where your business operates on your behalf.