The Illinois Voucher Certificate (IOC) is a program administered by the Illinois Department of Human Services that provides assistance to those in need. The program offers a range of vouchers for different services such as medical care, child care, housing, and transportation. The vouchers are issued by the state and can be used to pay for a variety of services. There are three types of Illinois Voucher Certificates: Medicaid, SNAP, and Cash Assistance. Medicaid vouchers are used to pay for medical services for eligible individuals and families. SNAP vouchers are used to purchase food for eligible households. Cash Assistance vouchers provide financial assistance for eligible individuals and families. All vouchers are issued on a case-by-case basis.