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MFS Municipal Income B MMIBX

Analyst rating as of
  • NAV / 1-Day Return 8.21  /  0.12 %
  • Total Assets 4.5 Bil
  • Adj. Expense Ratio
  • Expense Ratio 1.470%
  • Distribution Fee Level Average
  • Share Class Type
  • Category Muni National Long
  • Credit Quality / Interest Rate Sensitivity
  • Min. Initial Investment 1,000
  • Status Closed
  • TTM Yield 1.93%
  • Effective Duration 8.61 years

Morningstar’s Analysis MMIBX

Will MMIBX outperform in future?

Get our overall rating based on a fundamental assessment of the pillars below.

An experienced muni group manages this offering.



MFS Municipal Income’s experienced and collaborative team employs a structured, bottom-up approach underpinned by strong analytical tools and a focus on risk management. The strategy earns a Morningstar Analyst Rating of Bronze on its cheapest share classes, while its pricier shares range from Neutral to Negative.

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