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MFS® Municipal High Income Fund

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Fact Sheet

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Symbol: MMHYX   CUSIP:  552984304   Newspaper Abbreviation: MuHiA   Fund number: 25  
Daily NAV:  $7.78  (as of 4/17/14)
    Characteristics Fund Profile Performance Portfolio Management Dividends and Capital Gains Price History Fund Reports/Prospectus Sales Tools

Performance S2

Start of Investment Operations: February 24, 1984
Class Inception: February 24, 1984
Maximum Sales Charge:  4.75%

Average Annual Total Returns, not including sales charges (%)
These results represent the percent change in net asset value.

  Updated Daily as of 4/17/14, subject to revision. (not annualized) Updated Monthly as of 3/31/14
  YTD 1Yr 3Yr 5Yr 10Yr Life
  6.26 -2.14 7.97 9.53 4.80 6.41
Barclays Municipal Bond Index n/a 0.39 5.79 5.71 4.45 n/a

Average Annual Total Returns, including sales charges (%)
These results represent the percent change in net asset value.

Updated Daily
as of 4/17/14,
subject to revision.
(not annualized)
Updated Monthly as of 3/31/14
YTD 1Yr 3Yr 5Yr 10Yr Life
1.21 -6.79 6.23 8.47 4.29 6.24

Average Annual Total Returns , not including sales charges (%) Updated Quarterly through 3/31/14
These results represent the percent change in net asset value.

  YTD 1Yr 3Yr 5Yr 10Yr Life
  5.06 -2.14 7.97 9.53 4.80 6.41
Barclays Municipal Bond Index 3.32 0.39 5.79 5.71 4.45 n/a

Average Annual Total Returns, including sales charges (%), Updated Quarterly through 3/31/14
These results represent the percent change in net asset value.

YTD 1Yr 3Yr 5Yr 10Yr Life
0.07 -6.79 6.23 8.47 4.29 6.24

Morningstar RatingTM: As of 3/31/14

Morningstar Category: High Yield Muni
3 yr
5 yr
10 yr
Load Waived  
Number of funds in High Yield Muni: 153 153 123 91

For each fund with at least a three-year history, Morningstar calculates a Morningstar Rating based on a Risk-Adjusted Return measure that accounts for variation in a fund's monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. Within each asset class, the top 10%, the next 22.5%, 35%, 22.5%, and the bottom 10% receive 5, 4, 3, 2, or 1 star, respectively. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Each fund is rated exclusively against U.S. domiciled funds. The Overall Morningstar Rating™ is based on the weighted average of the number of stars assigned to the fund's applicable time periods. In cases where the fund has changed investment categories, its historical information is given less weight. If the fund has been in existence at least 10 years, the 10-year rating accounts for 50%, the 5-year for 30%, and the 3-year for 20%. If the fund has been in existence at least 5 years, but less than 10 years, the 5-year rating accounts for 60% and the 3-year for 40%. If the fund has been in existence for 3 years, but less than 5 years, the 3-year rating accounts for 100%. Morningstar rankings may vary among share classes and are based on historical total returns, which are not indicative of future results.

Load-waived (LW) Class A share star ratings do not include any front-end sales load and are intended for those investors who have access to such purchase terms (e.g., plan participants of a defined contribution plan). Not all A share mutual funds for which Morningstar calculates a load-waived A share star rating may actually waive their front-end sales load. Therefore, Morningstar strongly encourages investors to contact their investment professional to determine whether they are eligible to purchase the A share without paying the front load.


©2014 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Important Performance Information

Overall Morningstar RatingTM
Load Load Waived

View Overall Morningstar Ratings Information
Morningstar Overall Rating As of 3/31/14 , class A Shares. Morningstar ratings are based on risk adjusted performance.
For complete information view the Prospectus  
Distribution Rates as of
March 31, 2014 (%)
Not Including Sales Charges Including Sales Charges
4.91 4.68
The distribution rates are computed by annualizing the current distribution rate per share (excluding short-term capital gains), and dividing the result by the public offering price (for the distribution rate including sales charge) or net asset value (for the distribution rate not including sales charge) at the end of the business day stated above.


SEC Yields as of
March 31, 2014 (%)
Without Waiver With Waiver
4.14 4.18
The fund's 30-day yield is based on the yield of a fund's investments over a 30-day period and not on the dividend paid by the fund, which may differ.


Annual Rates of Return at NAV (%)
  Year Rate of Return Barclays Municipal Bond Index
  2013   -6.02   -2.55    
  2012   13.94   6.78    
  2011   11.22   10.70    
  2010   4.56   2.38    
  2009   29.65   12.91    
  2008   -20.16   -2.47    
  2007   -1.10   3.36    
  2006   6.71   4.84    
  2005   6.59   3.51    
  2004   7.18   4.48    

Expense Ratios (%)
Gross Net
0.72 0.70
Gross Expense Ratio is the fund's total operating expense ratio from the fund's most recent prospectus. Net Expense Ratio reflects the reduction of expenses from fee waivers and reimbursements. Elimination of these reductions will result in higher expenses and lower performance. These reductions will continue until at least May 31, 2015.

Important Performance Information

Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value fluctuate so your shares, when sold, may be worth more or less than the original cost; current performance may be lower or higher than quoted.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable. All results are historical and assume the reinvestment of dividends and capital gains.

S2 Dividends are generally subject to state and local taxes. For investors subject to the alternative minimum tax, a small portion of dividend income may be taxable. Capital gains distributions, if any, are taxable.

Sales Charges

Class A shares ("A") results include the maximum sales charge.

Important Risk Considerations

The fund may not achieve its objective and/or you could lose money on your investment in the fund.

Investments in debt instruments may decline in value as the result of declines in the credit quality of the issuer, borrower, counterparty, underlying collateral, or changes in economic, political, issuer-specific, or other conditions. Certain types of debt instruments can be more sensitive to these factors and therefore more volatile. In addition, debt instruments entail interest rate risk (as interest rates rise, prices usually fall), therefore the Fund's share price may decline during rising rate environments as the underlying debt instruments in the portfolio adjust to the rise in rates. Funds that consist of debt instruments with longer durations are generally more sensitive to a rise in interest rates than those with shorter durations. At times, and particularly during periods of market turmoil, all or a large portion of segments of the market may not have an active trading market. As a result, it may be difficult to value these investments and it may not be possible to sell a particular investment or type of investment at any particular time or at an acceptable price.

Investments in derivatives can be used to take both long and short positions, be highly volatile, result in leverage (which can magnify losses), and involve risks in addition to the risks of the underlying indicator(s) on which the derivative is based, such as counterparty and liquidity risk.

Investments in lower-quality debt instruments can be more volatile and have greater risk of default than higher-quality debt instruments.

Investments in municipal instruments can be volatile and significantly affected by adverse tax or court rulings, legislative or political changes, market and economic conditions, issuer, industry-specific (including the credit quality of municipal insurers), and other conditions.

Please see the prospectus for further information on these and other risk considerations.

This publication is authorized for distribution only when preceded or accompanied by a prospectus, or summary prospectus, for the portfolio being offered. Consider the fund's investment objectives, risks, charges and expenses. Contact MFS or view online. Read it carefully.