Allegheny County property tax calculator 2026
This calculator provides an estimated property tax for real estate located in Allegheny County, Pennsylvania. The estimate is based on the county assessed value under the base-year assessment system and a combined local property tax rate that includes county, municipal, and school district components.
Estimates only. Results may differ from official tax bills, pay stubs, or filed returns.
Estimated property tax
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Enter the assessed value to see the estimated annual property tax.
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How it works
Allegheny County assesses real property using a base-year market value system. A single assessed value is placed on each parcel and is used by the county, the municipality, and the school district. Each taxing authority applies its own millage rate to that assessed value, and the individual amounts are added together to determine total property tax.
Examples
In Allegheny County, different municipalities and school districts adopt separate millage rates. The combined rate applicable to a parcel is applied to the assessed value to estimate annual tax.
Limitations and important notes
This calculation provides a general property tax estimate derived from the inputs supplied. Municipal and school district millage rates vary across Allegheny County, and exemptions or exclusions may apply depending on eligibility. Actual property tax bills may differ from the estimate shown.
FAQs
What value is used to calculate property tax in Allegheny County?
Property tax is based on the county assessed value determined under the base-year assessment system, not on current market value.
Does Allegheny County use the same value for all local taxes?
Yes. The county, municipality, and school district all apply their millage rates to the same assessed value.
Why does the property tax rate differ between locations in the county?
Municipal and school district millage rates vary by jurisdiction, which causes total property tax rates to differ within the county.
Is this calculator an official tax bill?
No. It provides an estimated property tax amount. The actual tax bill is issued by local tax authorities.
Calculations are simplified and for guidance only. Always double-check results and current rules with official sources or a qualified professional before making financial decisions.