Okla. Stat. tit. 14A, § 14A-2-202.2: Over-the-limit charge

The seller on a revolving charge account accessed by a seller

credit card or similar arrangement may contract for and collect from

the buyer an over-the-limit charge of Ten Dollars ($10.00) for each

time the buyer exceeds the designated credit limit on the amount.

This charge shall be in addition to all other credit service

charges, fees or additional charges which the seller may charge and

collect from the buyer under the Uniform Consumer Credit Code,

Section 1-101 et seq. of this title.