MFS Municipal Income R6 (MFS Municipal Income Fund - R6) Fonds

MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests the fund’s assets primarily in municipal instruments. The fund invests normally at least 80% of its net assets in securities and other investments, the interest on which is exempt from U.S. federal income tax. It may invest 25% or more of its total assets in municipal instruments that finance similar projects, such as those relating to education, healthcare, housing, utilities, water, or sewers.