Mo. Rev. Stat. § 215.200

The commission shall not be required to pay any taxes and assessments to the state of Missouri, or any county, municipality or other governmental subdivision of the state of Missouri, upon any of its property or upon its obligations or other evidences of indebtedness pursuant to the provisions of sections 215.010 to 215.250, or upon any moneys, funds, revenues or other income held or received by the commission, and the notes and bonds of the commission and the income therefrom shall at all times be exempt from taxation, as aforesaid, except for death and gift taxes, taxes on transfers, sales taxes, real property taxes and business and occupation taxes.