53 Pa. Stat. § 16113
Any council of a city of the first class may authorize, by ordinance, the board of education of any coterminous school district of the first class to levy a tax imposed on or measured by the net income of a corporation, for the privilege of doing business therein, for district purposes: Provided, That the tax authorized pursuant to this paragraph shall not exceed a rate of three per cent per annum prior to July 1, 1972 and shall not exceed a rate of four and one half per cent per annum beginning July 1, 1972.
The authorization provided herein for taxes for district purposes, if exercised for the fiscal year beginning July 1, 1972, shall operate to void and repeal the authority to authorize, impose or levy:
The tax authorized by the act of May 23, 1949 (P.L. 1669), entitled, as amended, "An act to provide revenue for school districts of the first class by imposing a tax on persons engaging in certain businesses, professions, occupations, trades, vocations and commercial activities therein; providing for its levy and collection; conferring and imposing powers and duties on the Board of Public Education, receiver of school taxes and school treasurer in such districts; and prescribing penalties."
In the event that the city elects not to authorize the corporate net income tax authorized hereunder for district purposes for the fiscal year beginning July 1, 1972, the authorization to empower the city to permit the district to impose that tax for district purposes shall become null and void.
53 P.S. § 16113