MFS Municipal Income Trust to Allow 100% Investment in Below-Investment Grade Municipal Bonds

summarizeSummary

MFS Municipal Income Trust has updated its investment policy to permit investments of up to 100% of its assets in below-investment grade municipal obligations, a significant increase from the previous 20% limit.

check_boxKey Events

• Investment Policy Change Approved

  The Board of Trustees approved a change to the fund's non-fundamental investment policy regarding below-investment grade municipal obligations.

• Increased High-Yield Exposure

  The fund's limit for investing in below-investment grade municipal obligations will increase from 20% to 100% of its assets.

• Effective Date

  This significant policy change will become effective on June 1, 2026.

auto_awesomeAnalysis

This prospectus supplement details a material change in the investment policy for MFS Municipal Income Trust, effective June 1, 2026. The fund will now be authorized to invest up to 100% of its assets in municipal obligations rated below investment grade, a substantial increase from the prior 20% limit. This shift significantly elevates the fund's risk profile, as below-investment grade bonds carry higher credit risk in exchange for potentially higher yields. Investors should be aware of this increased exposure to riskier assets, which could lead to greater volatility and potential for capital loss.