The Illinois 2017 Triennial Report affidavit is a document that is filed by legal entities operating in the state of Illinois that are registered with the Secretary of State. It is required to be filed by all LCS, partnerships, and corporations as an annual report to the Secretary of State. The affidavit is used to update the contact information of the business, including the address, registered agent, and responsible parties. It also serves to update the type of business entity, the business purpose, and the status of the business. There are two main types of Illinois 2017 Triennial Report affidavit: the LLC affidavit and the corporation affidavit. The LLC affidavit is used for all limited liability companies registered in the state and the corporation affidavit is used for all corporations registered in the state. Both affidavits must be filed every three years with the Secretary of State in order to remain in compliance with the state's business regulations.