Form an LLC in Illinois
Forming an LLC in Illinois costs $150 in state filing fees, paid to the Illinois Secretary of State. FastBusinessFiling prepares and files your articles for a flat $100, so the total to have it done for you is $250. The state's $150 is passed through at cost, not marked up. Fees last checked Oct 2, 2026, on the official site of the Illinois Secretary of State.
Source: Illinois Secretary of State. Fees last checked Oct 2, 2026.
Filed in a day. One flat price. Nothing you didn't ask for.
Filed within one business day
One tier, one speed, every order. There is no rush fee here because there is no slow lane to buy your way out of.
A specialist reads every filing
Prepared and checked before it is filed. If your name or address will not clear the state, you hear from us before it goes in.
Registered agent at $99, only if you want one
Optional, and it sits beside a free option to name yourself. Most people never need to buy it.
One price, and nothing starts on its own
$100 to form, $50 flat for every filing after. The only thing that can renew is a registered agent you chose, at the price you chose it for. No tiers, no trial that turns into a charge.
What does a Illinois LLC cost in total?
$250 in total: $150 to the Illinois Secretary of State plus our $100 flat fee to prepare and file it.
- Illinois government fee
- $150
- Our service fee
- $100 flat
- Total through us
- $250
- Filed with
- Illinois Secretary of State
- Prepared and submitted
- Within one business day
- Renewals or subscriptions
- None
What is different about forming an LLC in Illinois?
A Series LLC is a different filing at a higher state fee. Tell us if that is what you need.
What does Illinois require after you form an LLC?
Illinois requires an annual report ($75 to the state) and a registered agent at all times, plus sales tax registration if you sell taxable goods.
Annual report
$75 to the state. Annual report, due before the first day of your anniversary month. More on Illinois annual reports.
Sales tax registration
Free from the state, and only if you sell taxable goods. More on Illinois reseller permits.
Registered agent
Every Illinois LLC has to name one. It can be you at no cost if you have a street address in the state. Ours is $99 a year and optional, with no first year that quietly becomes a renewal.
Trade name, if you use one
$150 to the state, plus our $50. Illinois prorates the assumed name fee inside a 5 year cycle, so the exact state fee depends on the year you file. We confirm it before filing.
What else do people ask about forming an LLC in Illinois?
$150 goes to the Illinois Secretary of State as the state filing fee. Our service fee is $100 flat, so $250 covers everything to have the filing prepared and submitted for you. You can also file it yourself directly with the state and pay only the $150.
Yes. Illinois charges $75. Annual report, due before the first day of your anniversary month. We file it for $50 plus that fee.
Yes, if you have a street address in Illinois where somebody can accept legal papers during business hours. A PO box will not do. Using your own address costs nothing. Our registered agent service is $99 a year and exists for people forming out of state or keeping a home address off the public record.
Only if you sell taxable goods. Illinois's sales tax registration is free from the state. It is a separate filing from forming the LLC, and we handle it for $50.
We prepare and submit your filing within one business day of your order. After that it is the Illinois Secretary of State's queue, which moves at a different speed in different weeks; we tell you what the state is quoting when you order rather than promising a date we do not control.
Other Illinois filings
What other states charge
Government fees on this page are paid to the Illinois Secretary of State. Fees last checked Oct 2, 2026, on the official site of the Illinois Secretary of State. States change them without much warning, and your exact total is recalculated at checkout from the same table. FastBusinessFiling is a filing service, not a law firm or an accounting firm, and does not give legal or tax advice. You can file any of this yourself directly with Illinois.
