If a political subdivision has adopted an ordinance or resolution under section 1902-A, the assessed value of the homestead of a qualified owner-occupant shall not exceed the base year assessed value of the homestead multiplied by the tax-neutral ratio for the school district in which the homestead is located. The maximum assessed value calculated under this section shall apply only to the real property tax levied by the political subdivision that has adopted the ordinance or resolution.
16 P.S. § 4903-A