53 Pa. C.S. § 8713
(a) General rule.--The provisions of section 14 of the Local Tax Enabling Act shall be used to determine any credits under the provisions of this chapter for any taxes imposed under section 8711 (relating to earned income and net profits tax).
(b) State tax credit.--A credit against personal income tax due to the Commonwealth under section 302 of the Tax Reform Code shall be granted to all nonresidents of a city of the first class who are subject to a tax imposed by a city of the first class pursuant to the act of August 5, 1932 (Sp.Sess., P.L. 45, No. 45), referred to as the Sterling Act. The credit shall equal 0.2756% of salaries, wages, commissions, compensation or other income received for work done or services performed within a city of the first class. The Secretary of Revenue shall promulgate such regulations and forms as are necessary to implement the provisions of this subsection. This section shall only apply to residents of school districts which impose the tax under this subchapter. A governing body of a school district in a county of the second class A shall, and a governing body of a school district in a county of the third class may, include in the referendum question undersection 8703 (relating to adoption of referendum) language asking whether the credit against the personal income tax in this subsection should be provided to the nonresident taxpayer in the city of the first class or the school district in which the taxpayer resides for the purpose of making additional tax reductions in the same manner as section 8717 (relating to disposition of earned income and net profits tax revenue). Should any court of competent jurisdiction determine that this subsection is unconstitutional, the provisions of this subsection shall be void and no credit shall be expanded or extended in any way by any court.
53 Pa.C.S. § 8713