72 Pa. Stat. § 1702
If any corporation, association, exchange, or person, or the officer or officers of any corporation, association, or exchange, shall neglect or refuse to furnish to the Department of Revenue, within the time prescribed by law, or any extension thereof granted by the Department of Revenue, any bonus or tax report required by sections seven hundred six, seven hundred seven, seven hundred eight, seven hundred ten, seven hundred thirteen, seven hundred fourteen, seven hundred fifteen, seven hundred sixteen, seven hundred nineteen or seven hundred twenty, of this act, unless within thirty days after the report became due it has been filed, the amount of the tax or bonus admitted to be due has been paid, and reasons satisfactory to the Department of Revenue have been shown to the Department of Revenue why the reports were not furnished to it as required by this act, it shall be the duty of the Department of Revenue to add to the bonus or tax of such corporation, association, exchange, or person, for each and every tax period for which such report was not so furnished, the following percentages, which shall be collected with the bonus or tax in the usual manner of settling and collecting such bonus or tax:
On the first one thousand dollars of bonus or tax, ten per centum; on the next four thousand dollars, five per centum; and on everything in excess of five thousand dollars, one per centum.
72 P.S. § 1702