1.    On or before the last day of a quarter, each facility required to pay an assessment under this chapter must make out a return for the quarter in the form and manner prescribed by the commissioner. The facility shall report the number of licensed beds as of the first day of the quarter, the amount of the assessment for the quarter covered by the return, and include such further information the commissioner may require to enable the commissioner to correctly compute and remit the assessment levied by this chapter.

2.    Upon request by a facility and a proper showing of the necessity, the commissioner may grant to the facility an extension of time not exceeding thirty days for making a return. If an extension is granted to a facility, the time the facility is required to make payment of the assessment liability must be extended for the same period. Interest must be charged upon the amount of the deferred payment at the rate of twelve percent per annum from the date the assessment would have been due if the extension had not been granted to the date the assessment is paid.

3.    A return must be signed by a duly authorized agent of the facility and must contain a written declaration that the return is made and subscribed under the penalties of this chapter.