Business Owners Requirements

Lake County Requirements
Choose a Business Name
If you conduct business in Illinois under an assumed or corporate name, you must file for a certificate with Lake County. Lists of current business names are available at the Lake County Clerk’s Office, they can be reached at 847-377-2400.

State Requirements
Incorporate your Business
If you wish to begin a Corporation or Limited Partnership, you must register with the State of Illinois on the Illinois Secretary of State website, you can also call 312-793-3380.

Obtain Your Sales Tax Number
If you engage in a type of retail sales business you must have a sales tax number (either an Illinois Business Tax Number or a Retailer’s Occupational Tax Number). Obtain your sales tax number at the Illinois Department of Revenue by calling 312-814-5258.

State Liquor License Requirements
If purchasing, selling, or serving alcohol as part of your business you must have both a local (Village) and State liquor license. State License Applications are available on the Illinois Liquor Control Commission in Chicago, they can be reached at 312-814-2206; the one in Springfield can be reached at 217-782-2136.

Federal Requirements

Obtain Your FEIN
If you are a corporation or partnership you must have a Federal Employer Identification Number (FEIN). A sole proprietorship may be able to use its Social Security Number. You can obtain your FEIN on the Federal Taxpayer Service website, by calling 800-829-1040, or seek assistance from your accountant.