An Act amending the act of March 4, 1971 (P.L.6, No.2), known as the Tax Reform Code of 1971, in personal income tax, further providing for refund or credit of overpayment and providing for interest on refund or credit of overpayments; in general provisions, providing for interest on taxes due the Commonwealth and for interest on overpayments; and making repeals.
HB 959 restructures Pennsylvania income tax interest calculations for both overpayments and underpayments, affecting refund timing and tax liability costs for individuals and state revenue.