Illinois Certification of Corporate Surety is an official document issued by the State of Illinois to corporations that wish to become surety (bond) companies for public works projects. It is required for any company that wishes to provide surety bonds to any public works project in the state of Illinois. There are two types of Illinois Certification of Corporate Surety: Qualified Surety and Licensed Surety. The Qualified Surety is a lower level of certification and is given to companies that have met the minimum requirements for surety companies, such as financial stability. The Licensed Surety is a higher level of certification and is given to companies that have met the more stringent requirements for surety companies, such as providing proof of financial stability and having a good track record in the industry. The requirements for both types of certification are established by the State of Illinois and must be met in order to receive the certification.