Appeal Deadline
September 1 (County Board of Assessment Appeals); a county may set an earlier date, but no earlier than August 1
September 1 is the statutory default under 53 Pa.C.S. §8844(c)(1); county commissioners may designate an earlier annual deadline but it cannot fall before August 1 — confirm your county's date. Interim and change-of-assessment notices carry their own 40-day window. Philadelphia: first Monday in October (October 5, 2026 for tax year 2027). Allegheny County: July 1 – September 1, 2026, applied prospectively to tax year 2027.
Understanding Pennsylvania's Assessment Ratio
Pennsylvania assesses at 100% of market value, so your assessed value should equal what your property is worth on the open market.
This makes appeals straightforward: if comparable homes in your area sold for less than your assessed value, you have grounds for an appeal.
How to Appeal Your Property Tax in Pennsylvania
Receive assessment notice from county
Confirm your county's annual deadline — September 1 by statute, though a county may set an earlier date no sooner than August 1 (Philadelphia: first Monday in October; Allegheny: July 1 – September 1)
File appeal with the County Board of Assessment Appeals
Attend Board hearing
Appeal to Court of Common Pleas within 30 days of Board decision
Further appeal to Commonwealth Court
Exemptions & Relief Programs
Key Statutes & Legal References
Pennsylvania Property Tax Code
Key Statutes
Major Exemptions
Pennsylvania Appeal Tools
Use these tools to build your appeal case for Pennsylvania:
