Rate of interest allowed on loans of $15,000 or less -- Trust company not to extend credit -- Exception

to extend credit -- Exception. Notwithstanding the provisions of any other law, a bank may take, receive, reserve, and charge on money due or to become due on any contract or other obligation in writing, where the original principal amount is fifteen thousand dollars ($15,000) or less, interest at any rate allowed national banking associations by the laws of the United States of America. A trust company shall not make any extensions of credit on its own account, but may make extensions of credit for trust assets under management.