Eaton Vance Massachusetts Municipal Income Trust is a closed-end management investment company that primarily focuses on providing a high level of current income exempt from federal income tax, as well as Massachusetts state income tax, by investing in municipal securities issued by the Commonwealth of Massachusetts and its political subdivisions. The trust aims to deliver a stable return by acquiring a diversified portfolio of municipal bonds and other fixed-income securities, which may include revenue bonds, general obligation bonds, and other types of debt instruments. Its strategy typically seeks to enhance yield while carefully managing risk, allowing investors to benefit from tax-efficient income generation while supporting local municipalities.