1. If a debt retirement account is established pursuant to subsection 3 of section 94.815, then a portion of seventy-five percent of the revenues received by a municipality from a tourism tax authorized by section 94.802 or section 94.805 which is required to be set aside for debt retirement purposes by any sinking fund or other requirement in connection with any bonds or indebtedness, or which is required by ordinance to be set aside for debt retirement purposes and to establish reserves and additional security, or which is otherwise required to be set aside so as to make scheduled payments upon and otherwise secure any outstanding bonds or indebtedness shall be deposited in a debt retirement account within the tourism tax trust fund provided for in section 94.815 and shall be used solely to retire and otherwise secure any outstanding bonds or indebtedness. Any remaining portion of the seventy-five percent of the revenues not deposited in the debt retirement account pursuant to this subsection shall be deposited in the infrastructure account provided for in section 94.815.

2. Once all the bonds and indebtedness for which the debt retirement account was established have been retired, all funds remaining in such account shall be transferred to the infrastructure account provided for in section 94.815.