Unlike many states, Illinois doesn’t issue a single general business license. Getting a business license in Illinois depends on where your business operates and what it does since licensing is managed by state agencies, city governments, and occupational boards, each with their own process.

Below, we’ll discuss which licenses you might need for your business, the steps to getting a business license in Illinois, and common mistakes that could affect new Illinois businesses.

Key takeaways

• Illinois generally handles business licensing at the local level rather than through a single state license.

• The steps and costs of getting a business license depend heavily on your business structure, industry, and whether you’re operating inside or outside Chicago.

• Registering for sales tax and forming your limited liability company (LLC) or corporation are separate processes, and completion of one doesn’t satisfy the other.

What is a business license in Illinois?

Illinois doesn’t issue a single, all-purpose business license. Licensing in Illinois requires working with multiple sets of rules, including state registration, city statutes, and in some cases, occupation-specific regulations.

What types of business licenses and permits do you need in Illinois?

New businesses in Illinois often need a variety of licenses and permits.

Requirements differ by location and industry but may include:

• Local general business license: Chicago generally requires businesses operating within city limits to hold a local general business license. Outside Chicago, some municipalities such as Evanston or Naperville run their own local registration, while others don’t license general commerce.

• Occupational licenses: Illinois licenses roofing contractors, plumbers, cosmetologists, real estate brokers, healthcare providers, and dozens of other regulated occupations. You’ll need to apply with the Illinois Department of Financial and Professional Regulation (IDFPR) before you can legally operate.

• Certificate of Registration: If you sell tangible goods or certain taxable services, you need a certificate of registration from the Illinois Department of Revenue (IDOR) to collect and remit sales tax. This is the same as a seller’s permit in other states.

• Federal licenses: Industries such as firearms sales, alcohol production, or interstate trucking need a federal license in addition to any other state or city requirements.

How do you get a business license in Illinois?

To obtain a license in Illinois, you’ll need to complete a series of consecutive tasks involving several agencies, including:

1. Choose and register your business structure

If you’re forming an LLC or corporation, file articles of organization or articles of incorporation with the Illinois Secretary of State through its online portal. Sole proprietors skip this step unless they’re filing an assumed business name, sometimes called a “doing business as” (DBA) name, with their county clerk.

2. Get a federal EIN from the IRS

Getting an Employer Identification Number (EIN) from the Internal Revenue Service (IRS) is free and quick online. You’ll need it for nearly every registration that follows, including your Illinois tax accounts and any business bank account you open.

3. Register with the state

Use MyTax Illinois to apply for a Certificate of Registration from the Illinois Department of Revenue if you’ll be collecting sales tax or withholding payroll tax from employees. And register with the Illinois Department of Employment Security if you plan to hire employees. This prompts your state unemployment insurance obligations and applies as soon as you hire your first employee.

4. Apply for an occupational license

If you’re in a regulated industry, such as healthcare, cosmetology, or contracting, you need to register with the Illinois Department of Financial and Professional Regulation (IDFPR). Processing times vary widely by profession, and some licenses require proof of education, passing exams, or continuing education hours before IDFPR will issue anything.

5. Get your local license

In Chicago, that means applying through Chicago Business Direct, which asks you to specify your business activity so it can route you to the right license category and flag any required inspections. Outside of Chicago, contact your city or village clerk directly since there’s no single statewide portal for local licenses.

How much does a business license cost in Illinois?

Costs for registering a business are split across three major categories: state filing fees, tax registration, and local license fees that vary by city. The table below reflects typical ranges as of 2026; confirm exact figures with the relevant agency before you budget.

How do you renew a business license in Illinois?

Renewal timing depends on which license you’re tracking since Illinois doesn’t run these on one shared calendar. Chicago business licenses run on a two-year cycle, and the city sends renewal notices through Chicago Business Direct rather than by mail, so it’s worth checking your account status directly instead of waiting for a notification. IDFPR licenses renew on schedules set by profession, generally every two or three years, with reminders sent to the address or email you have on file.

If you have an LLC or corporation, you must file an annual report each year on your entity’s formation anniversary month. Illinois can administratively dissolve your organization if you don’t file, which is a bigger problem than a lapsed local license since it affects your legal standing to do business at all. Also, operating with an expired license in Chicago can incur fines and, in categories such as food service, an order to stop operating until you’re current. Add your renewal dates to your calendar well ahead of time rather than counting on an agency to flag them for you.

What are some common mistakes when getting a business license in Illinois?

A few mistakes tend to show up with new Illinois businesses, and many of them come from assuming the process works the way it does in other states.

Here are the common mistakes to watch for in Illinois:

• Assuming a general state license exists: Because most states typically have some version of a general business license, people search for Illinois’s equivalent and come up empty, then assume they’ve missed a step.

• Overlooking Chicago’s separate licensing system: Businesses that form their LLC with the state and register for sales tax sometimes stop there and don’t realize Chicago requires its own license for anyone operating within city limits.

• Treating LLC formation as the whole process: Filing articles of organization with the Secretary of State creates your legal entity, but it doesn’t license you to operate, register you for tax purposes, or satisfy any local requirements.

• Skipping registration before the first sale: Businesses that start selling before completing their IDOR Certificate of Registration can owe back sales tax on those early transactions along with potential penalties.

• Missing home-based business rules: Chicago requires a Home Occupation license for many home-based businesses, with restrictions on signage, employee traffic, and deliveries. If you’re operating in other cities, check their specific home-based rules and licensing.

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FAQs about getting a business license in Illinois