Form an LLC in Illinois
Form your LLC in Illinois with QuickBiz for $300 ($150 + $150 state fee). Illinois has state income tax, so factor that into your ongoing costs. Illinois supports online filing, which helps speed up the process. Processing typically takes 5-10 business days. Annual compliance includes a annual report ($75).
Total cost
$300 ($150 + $150 state fee)
State filing fee
$150
Processing time
5-10 business days
Annual cost
$75/year (annual report)
Why form in Illinois
- Reasonable filing fee — $150
- Online filing available — faster processing
- No publication requirement — saves time and money
- Series LLC available — create sub-entities under one LLC
- Operating agreement not legally required (but we include one)
- Expedited filing available — 24 hours for $100 extra
Things to consider
- Has state income tax — consider this for ongoing costs
Best for
Illinois is best for software founders who live in Illinois and want to keep things simple. Forming in your home state avoids the need for foreign LLC registration. If you're open to other states, Wyoming offers lower ongoing costs and strong privacy.
How to form an LLC in Illinois with QuickBiz
- 1Choose your LLC name and verify availability with the state
- 2Provide your business details and founder information (5 minutes)
- 3We file your formation documents with the state
- 4We apply for your EIN with the IRS (free)
- 5Receive your formation documents and operating agreement
- 6Access your compliance dashboard and post-formation checklist
Frequently asked questions
How much does it cost to form an LLC in Illinois?
With QuickBiz, Illinois LLC formation costs $300 ($150 + $150 state fee). This includes everything: state filing, EIN application, registered agent (year 1 free), operating agreement for software businesses, and compliance dashboard. The $150 state fee is set by Illinois's Secretary of State.
How long does Illinois LLC formation take?
Illinois LLC formation typically takes 5-10 business days for standard processing. Expedited processing (24 hours) is available for $100 extra. The QuickBiz signup process takes about 5 minutes — we handle everything after that.
Does Illinois have state income tax?
Yes, Illinois has state income tax. This means your LLC's income may be subject to state taxes in addition to federal taxes. Many software founders in states with income tax form their LLC in Wyoming to avoid state taxes, then register as a foreign LLC if needed.
What are the annual requirements for a Illinois LLC?
Illinois requires a annual report with a fee of $75. QuickBiz tracks these deadlines and reminds you when filings are due.
Is Illinois a good state for a software business LLC?
Illinois is best for software founders who live in Illinois and want to keep things simple. Forming in your home state avoids the need for foreign LLC registration. If you're open to other states, Wyoming offers lower ongoing costs and strong privacy.
Ready to form your Illinois LLC?
$300 ($150 + $150 state fee). Everything included. Takes about 5 minutes.
Get started