N.M. Stat. § 6-10-1.2
Payment methods authorized; fee.
A. A state agency or local governing body may accept payment by credit card or
electronic means of any amount due under any law or program administered by the
agency or local governing body. The state board of finance shall adopt rules on the
terms and conditions of a state agency accepting payments by credit card or electronic
transfer. The local governing body shall adopt procedures, subject to the approval of the
department, on the terms and conditions of accepting payments by credit card or
electronic transfer.
B. A state agency or local governing body may charge a uniform convenience fee to
cover the approximate costs imposed by a financial institution that are directly related to
processing a credit card or electronic transfer transaction. The fee shall be charged to
the person using a credit card or electronic transfer. Amounts collected pursuant to this
subsection are appropriated to the state agency or local governing body to defray the
cost of processing the transaction.