Sec. 4. (a) A political subdivision may adopt an ordinance or resolution each year to provide for the use of revenue for the purpose of providing a homestead credit the following year to homesteads. An ordinance must be adopted under this section before December 31 for credits to be provided in the following year. The ordinance applies only to the immediately following year.
(b) A homestead credit under this chapter is to be applied to the net property tax liability due on the homestead.