Revised Statutes of Missouri — Title X (Taxation and Revenue)
§ 144.517 RSMo — Textbooks, sales and use tax exemption
In addition to the exemptions granted pursuant to section 144.030 , there shall also be exempted from state sales and use taxes all sales of textbooks, as defined by section 170.051 , when such textbook is purchased by a student who possesses proof of current enrollment at any Missouri public or private university, college or other postsecondary institution of higher learning offering a course of study leading to a degree in the liberal arts, humanities or sciences or in a professional, vocational or technical field, provided that the books which are exempt from state sales tax are those required or recommended for a class. Upon request the institution or department must provide at least one list of textbooks to the bookstore each semester. Alternately, the student may provide to the bookstore a list from the instructor, department or institution of his or her required or recommended textbooks. This exemption shall not apply to any locally imposed sales or use tax.
Source: official text