Missouri Revised Statutes Title IV. Executive Branch § 32.063. Credit cards may be accepted by department for payment of taxes and fees--director may establish fee for use

1. The director of revenue and the director's employees or agents may accept credit cards in payment of taxes and fees. The type of credit cards accepted shall be at the discretion of the director.

2. In addition to other fees provided by law, the director of revenue and the director's employees or agents may set a fee to be added to each credit card transaction equal to the charge paid by the state or the taxpayer for the use of the credit card by the taxpayer. No other fees shall be imposed other than those herein authorized.