Ravenwood Business Loans of Waukegan, IL put together this checklist for Lake County, IL owners who trade under an assumed name: how to search names, what to ask about certificates and renewals, and why matching names across bank statements and records matters to funding partners. Filing rules come from the offices named.
Assumed names, d/b/a and trade names in one paragraph
An assumed name, sometimes called a d/b/a or trade name, is a name a business uses that differs from the owner's legal name or the company's registered name. A sole proprietor called Maria Lopez who trades as Ravine Street Bakery is using one; so is an LLC that opens a second shop under a different brand.
Who uses an assumed name in Lake County, IL
Lake County, IL had 65,725 nonemployer businesses in 2024 (Nonemployer Statistics), and 4.5% (+/- 0.3) of employed county residents were self-employed in their own unincorporated business in the 2020-2024 American Community Survey. Unincorporated owners who trade under a brand are exactly the businesses that use assumed names.
Lake County, IL assumed name search
Before choosing a name, search what is already on file. A Lake County, Illinois assumed name search looks through the county's record of filed names.
- Search the exact name and close variations
- Search the state's business entity records too, since a company name can conflict with your trade name
- Check that a matching web domain and social handles are available
- Keep a copy or screenshot of your search results
Lake County, Illinois assumed name certificate: questions to ask
- Which office takes the filing for my type of business?
- What information and owner details does the form require?
- Is notarization or newspaper publication required, and who arranges it?
- What does the certificate look like, and how do I get certified copies for the bank?
- When does it expire, and how is it renewed?
Illinois assumed name renewal: keep it current
A lapsed assumed name can cause trouble when a bank or partner checks records. Put the renewal date in the same calendar you use for tax deadlines and insurance renewals, and keep the current certificate with your business documents.
How assumed names show up in a funding request
Funding partners compare names across documents. The business bank statements, tax return, any equipment quote and the request itself should tie together: legal name, plus the assumed name where it is used. If deposits arrive under the trade name but the account is in your personal name, expect questions.
- Open the business account in the legal name with the assumed name added, as your bank requires
- Make invoices and card-processing accounts show the same names
- Have the certificate ready to send if a partner asks
The request steps explain where documents come in, and the funding types page compares the options.
Name mix-ups partners notice
- Deposits arrive under a trade name, but the account is in the owner's personal name
- The tax return shows the legal name only, with no link to the brand customers know
- An equipment quote is addressed to the brand rather than the legal entity
- A renewed certificate was never sent to the bank
Each is fixable in an afternoon, and fixing it before a request goes out saves a round of questions.
Checklist
- Name searched at county and state level
- Correct filing office confirmed
- Certificate filed and certified copies obtained
- Bank account and card processor updated
- Renewal date recorded
- Names consistent on invoices, returns and statements
For local business counts, see the Waukegan, IL data page; other guides are on the resources page.
By Ravenwood Business Loans · Updated


