Western Asset Municipal High Income Fund Inc. (the Fund) is a diversified, closed-end management investment company. The Fund's investment objective is to seek high current income exempt from federal income taxes. The Fund invests primarily in intermediate- and long-term municipal debt securities issued by state and local governments. The Fund invests in high-yield instruments. The Fund invests in various industries, such as healthcare, leasing, education, power, transportation, and water and sewer. The Fund may invest in municipal obligations of any maturity. The Fund may invest in non-publicly traded municipal securities, zero-coupon municipal obligations and non-appropriation or other municipal lease obligations. Legg Mason Partners Fund Advisor, LLC (LMPFA) is the Fund's investment manager and Western Asset Management Company (Western Asset) is the Fund's sub-adviser.