(b) If a mobile home located in a county on the assessment date is to be removed from this state before the next following assessment date, all property taxes levied or assessed on such mobile home shall, upon the mobile home owner providing notice of such removal to the treasurer pursuant to subsection (1) of this section, become due and payable. The value to be placed on the property by the assessor pursuant to this paragraph (b) shall be such proportion of its value for the full calendar year as the number of calendar months in such year the mobile home was located in the original location bears to twelve; but, if the mobile home is to be removed from its original location before the sixteenth day of any calendar month, such month shall be disregarded, and, if the mobile home is to be removed from its original location on or after the sixteenth day of any calendar month, such month shall be considered as a full calendar month.
(4) If the levy for the current year has not then been fixed and made, the levy for the previous year shall be used by the treasurer to determine the amount of taxes due pursuant to this section. At such time as the levy for the current year has been fixed and made, the amount of any taxes collected on the property in excess of the amount correctly due and payable shall be refunded by the treasurer to the owner of the property forthwith; but, in all cases where the amount of taxes so collected is less than the amount correctly due and payable, the amount uncollected shall be considered an erroneous assessment and shall be reported with other erroneous assessments in the manner prescribed by law.