Who may serve
An LLC’s individual agent must reside in Illinois; a business-entity agent must be authorized to act as agent in Illinois.
How to change your agent
Domestic and foreign LLCs in good standing may submit the registered-agent/address change electronically.
Change fee
$25
Resignation
An LLC agent sends notice by registered or certified mail to the principal office at least 10 days before filing. Resignation takes effect on the 30th day after filing or a specified later date.
Who may serve
An LLC’s individual agent must reside in Illinois; a business-entity agent must be authorized to act as agent in Illinois.
Verified 2026-10-25 — source and quotation
The registered agent must reside in Illinois. If the agent is a business entity, it must be authorized to act as agent in this state.Official source
How to change your agent
Domestic and foreign LLCs in good standing may submit the registered-agent/address change electronically.
Verified 2026-10-25 — source and quotation
Both domestic and foreign limited liability companies in good standing may request a change in the registered agent and/or registered address electronically.Official source
Change fee
$25
Resignation
An LLC agent sends notice by registered or certified mail to the principal office at least 10 days before filing. Resignation takes effect on the 30th day after filing or a specified later date.
Verified 2026-10-25 — source and quotation
The agent resigns effective the 30th day after filing by the Secretary of State. ... The agent resigns on another date not less than 30 days after the filing by the Secretary of State ... The resigning registered agent has sent a copy of this notice to the principal office of the Limited Liability Company by registered or certified mail at least 10 days prior to the date of its filing with the Secretary of State.Official source