Quick answerPennsylvania sells tax deeds for unpaid property taxes. Redemption: No post-sale redemption after an upset or judicial sale under the Real Estate Tax Sale Law (72 P.S. § 5860.607(g)) in the 65 counties that use it. Exception: in proceedings under the Municipal Claims and Tax Lien Law (53 P.S. § 7293), the owner may redeem within 9 months of acknowledgment of the sheriff's deed — 3 months if the property is located in a city of the second class or a county of the second class or a municipality therein (i.e. Pittsburgh / Allegheny County) — on payment of the bid amount, costs, taxes/claims actually paid, and interest at 10% per annum on each payment (the 10% applies in both cases). Philadelphia (first class) falls under the 9-month rule Sales: Upset sale annually in the statutory September window (no earlier than the second Monday in September, 72 P.S. § 5860.601; e.g. Erie County Sept. 28, 2026), followed by judicial sales and repository sales later in the year Governing law: Real Estate Tax Sale Law, 72 P.S. § 5860.101 et seq.; Municipal Claims and Tax Lien Law, 53 P.S. § 7101 et seq. (Philadelphia, Allegheny County and electing jurisdictions).