(1) The school tax authorized by KRS 160.482 to 160.488 and 160.605 shall be at a single uniform rate not to exceed one-half of one percent (0.5%) and shall continue from year to year until changed as prescribed in KRS 160.635 and 160.484. (2) Any county having five hundred thousand (500,000) or more inhabitants is authorized to increase the school tax rate to exceed the maximum set in subsection (1) of this section by one-quarter of one percent (0.25%) before April 14, 2026. (3) Beginning on or after January 1, 2027: (a) A school tax is not authorized to be imposed under KRS 160.482 to 160.488 and 160.605 in a school district that does not already have one imposed; and (b) The rate of a school tax imposed under KRS 160.482 to 160.488 and 160.605 shall never increase.