The Nuveen Massachusetts Quality Municipal Income Fund is a closed-end fixed income mutual fund, originally established on January 12, 1993, and domiciled in the United States. Launched by Nuveen Investments, Inc., it is jointly managed by Nuveen Fund Advisors LLC and Nuveen Asset Management, LLC. The fund primarily allocates capital to the fixed income markets within Massachusetts, United States, concentrating on undervalued municipal securities and associated investments that offer exemptions from both federal and Massachusetts income taxes. A core investment criterion is that securities must achieve an investment-grade rating of at least Baa/BBB from S&P, Moody's, or Fitch. Portfolio construction employs a rigorous fundamental analysis coupled with a bottom-up security selection methodology. Its performance is benchmarked against the Standard & Poor's (S&P) Massachusetts Municipal Bond Index and the Standard & Poor's (S&P) National Municipal Bond Index. This fund was previously known as the Nuveen Massachusetts Premium Income Municipal Fund.