(A) If the sales and use tax is approved in the referendum, the tax is imposed on the first of May following the date of the referendum. If the certification is not timely made to the Department of Revenue, the imposition is postponed for twelve months.
(B) The tax terminates on the earlier of:
(1) the final day of the maximum time period specified for the imposition; or
(2) the end of the calendar month during which the Department of Revenue determines that the tax has raised revenues sufficient to provide the net proceeds equal to or greater than the amount specified in the referendum question.
(C) Amounts collected in excess of the required net proceeds must first be applied, if necessary, to complete a project for which the tax was imposed; otherwise, the excess funds must be credited to the general fund of the governmental entities receiving the proceeds of the tax, in the proportion which they received the net proceeds of the tax while it was imposed.