Answer:
Yes. 227.15 (Reg. AA) prevents the pyramiding of late fees in this manner and considers this to be an unfair or deceptive practice.
"It is an unfair act or practice for a bank to levy or collect any delinquency charge on a payment, when the only delinquency is attributable to late fees or delinquency charges assessed on earlier installments, and the payment is otherwise a full payment for the applicable period and is paid on its due date or within an applicable grace period."
First published on BankersOnline.com 10/4/04