Property Taxes in Pennsylvania
Pennsylvania's property taxes are governed by a real BASE YEAR assessment system under the General County Assessment Law and the Consolidated County Assessment Law -- Pennsylvania carries NO mandated statewide reassessment cycle comparable to Ohio's sexennial/triennial schedule, and this record states that plainly rather than assuming a comparable cycle exists.
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Learn moreThe base-year mechanic, precisely
Each Pennsylvania county selects a BASE YEAR, values every property in the county as of that year, and keeps those values on the books indefinitely -- there is no mandated statewide reassessment cycle, and a county may go decades between countywide reassessments unless it voluntarily undertakes one or a court orders one. This is a genuinely different mechanic from Ohio's cyclical sexennial-reappraisal/triennial-update system, which touches every property roughly every three years by design.
Real, documented decades-long gaps -- a genuine relocation-relevant quirk
This record discloses the real, documented gaps this produces rather than assuming Pennsylvania values stay current: Franklin County's base year dates to 1961 (the oldest cited in sources reviewed this pass), Beaver County's to 1982, and Dauphin County's (Harrisburg) to a 2001 countywide reassessment -- with a typical statewide gap between reassessments commonly cited at 20 years or more. A prospective buyer's assessed value, and thus their real tax bill relative to a home's actual current market value, depends heavily on how recently their SPECIFIC target county last reassessed.
Pennsylvania's statewide average rate runs above the national average, with real, substantial county variation
Pennsylvania's statewide average effective property tax rate runs roughly 1.26%-1.58% depending on source (Tax Foundation's 1.26% is this record's anchor) -- above the roughly 0.90% national average. This average masks real, substantial county-level variation: sourced 2026 figures range from roughly 0.79% in Bedford County up to roughly 1.62% in Delaware County (a Philadelphia suburb) and Monroe County (in the Poconos).
What this means for a buyer
Confirm your target property's specific county, its current base year and reassessment history, and its current millage rate directly with the county assessment office before finalizing a budget. There is no single statewide Pennsylvania property-tax figure -- and, given the base-year system, no assumption that a target county's assessed values track current market value -- that substitutes for this county-specific research.
Key takeaways
- Pennsylvania counties use a BASE YEAR assessment system with NO mandated statewide reassessment cycle -- values are held indefinitely until a county-initiated or court-ordered reassessment.
- Real, documented decades-long gaps exist: Franklin County's base year dates to 1961, Beaver County's to 1982, and Dauphin County's to a 2001 reassessment.
- Pennsylvania's statewide average effective rate (roughly 1.26%-1.58%) runs above the national average, with real, substantial county-level variation (roughly 0.79% in Bedford County to roughly 1.62% in Delaware and Monroe counties).
- Confirm your target county's current base year and reassessment history directly with the county assessment office -- this is genuinely more important due diligence in Pennsylvania than in a state with a mandated reassessment cycle.
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