72 Pa. Stat. § 2142
Whenever any public or private corporation, domestic or foreign, or any of the fiscal officers thereof, required by existing laws to deduct or collect and pay over to the Commonwealth taxes upon scrip, bonds, certificates, and evidences of indebtedness by such corporation issued or assumed, shall make payment of interest on any scrip, bonds, certificates, and evidences of indebtedness, issued or assumed by them, which payment shall include interest due and payable for prior years, it shall be the duty of the treasurers or other fiscal officers of such corporations paying such interest to forthwith report the same to the Department of Revenue, indicating the amount thereof, the years covered thereby, the precise character of the obligations whereon the interest was paid, the manner in which such obligations were held, the names and locations of the holders thereof during such prior years, and the names and locations of the holders thereof to whom such interest was paid, together with the amount paid to each; and it shall be their further duty to deduct from such interest the proper amount of tax on every dollar of the full amount of such obligations, to the extent that such deduction might have been required to have been made under existing law had the interest actually been paid during such prior years when due, and return the same into the State Treasury through the Department of Revenue.
72 P.S. § 2142