S.D. Codified Laws § 4-3-28
Notwithstanding any other provision of law, the state and its political subdivisions may accept a credit card, a debit card, or an electronic payment as payment for a transaction. The state and its political subdivisions may assess and collect a fee in an amount sufficient to cover any processing fee associated with a credit card, debit card, or electronic transaction. The Bureau of Finance and Management shall promulgate rules pursuant to chapter 1-26 relating to the establishment and collection of a processing fee associated with a credit card or debit card transaction. The governing body of each political subdivision may, by resolution, establish and collect a processing fee associated with a credit card, debit card, or electronic transaction.
SDCL 4-3-28