Eaton Vance Ohio Municipal Income Trust is a non-diversified, closed-end management investment company operating in the United States. Its investment objective is to provide current income exempt from regular federal income tax and taxes in its specified state. The company invests in debt securities issued by Ohio municipalities. The Trusts may invest in residual interest bonds whereby a Trust may sell a variable or fixed rate bond for cash to a special-purpose vehicle (the SPV) while at the same time, buying a residual interest in the assets and cash flows of the SPV.