605—11.7 (29C) Returned check and late fees. Applicable fees are due to the division within 30 days from the date of invoice. Persons who fail to pay required fees to the division are subject to the following penalties:
	  1. 	 Fifteen dollars for each payment received by the division in accordance with these rules, for which insufficient funds are available to fulfill the obligation of such payment to the division.
	  2. 	 Fifteen dollars for each month for which a payment is overdue, or for each additional month for which insufficient funds are available to fulfill the obligation of such payment to the division.