Eaton Vance Massachusetts Municipal Income Trust operates as nondiversified, closed-end management investment company. The trust invests primarily in debt securities issued by Massachusetts municipalities. Its portfolio comprises investments primarily in education, electric utilities, general obligations, health care, industrial development, transportation, and water and sewer sectors. Eaton Vance Management serves as the investment adviser of the trust. Eaton Vance Massachusetts Municipal Income Trust was organized in 1998 and is based in Boston, Massachusetts.