Md. Code Ann., Com. Law § 12-610.2
A holder may not enter into a retail installment sales agreement, providing for an initial rate of finance charge pursuant to § 12-609(f) or § 12-610(3) of this subtitle, which contains a provision that permits the holder to increase or decrease the applicable rate of finance charge from time to time during the term of an agreement.
Added by Acts 1982, c. 753, § 1, eff. July 1, 1982. Amended by Acts 1992, c. 22, § 1.