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Updated 2025 Tax Year

Armstrong County
Property Tax Guide

Everything you need to know about property taxes in Armstrong County, PA. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
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Quick Facts
Tax Rate
0.08795% average (87.95 mills), varies by municipality and school district
Exemptions
5+ Available
Section 1

How Property Tax Works

Armstrong County, Pennsylvania operates on a property tax system that funds essential county services, school districts, and municipal operations throughout the region. Property taxes are the primary revenue source for local government services including education, public safety, infrastructure maintenance, and community programs. The county uses a millage-based system where tax rates are expressed as mills (one mill equals $1 per $1,000 of assessed value).

The effective property tax rate in Armstrong County varies significantly by location due to different combinations of county, municipal, and school district millages. For 2025, the combined real estate tax rate is approximately 0.08795% (87.95 mills), though this can range higher or lower depending on your specific taxing districts. Property owners should note that their actual tax rate depends on which borough, township, and school district their property is located in, as each entity sets its own millage rate annually.

Section 2

What Makes Up Your Tax Bill

ComponentRate (Mills)Description
CountyVariesArmstrong County general operations, courts, sheriff, elections
School DistrictVariesLocal school district operations and facilities
MunicipalityVariesBorough or township services, roads, local government
Combined Rate~87.95Total millage for levy year 2025

Note: The combined rate of 87.95 mills (0.08795%) represents an average for Armstrong County. Your actual tax rate will depend on your specific location within the county, as different school districts, boroughs, and townships have varying millage rates. Some areas may have additional special assessments for fire districts, library services, or other local improvements.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Armstrong County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental property taxes in Armstrong County are additional tax bills issued when there are mid-year changes to property ownership, value, or use. The most common triggers include new construction completion, property ownership transfers, or significant improvements that increase assessed value. These taxes are calculated from the date of change through the end of the current tax year.

For example, if you purchase a newly constructed home in Armstrong County that was completed and occupied in March, you would receive a supplemental tax bill covering March through the remainder of the fiscal year. The supplemental tax is calculated by applying the current tax rate to the newly assessed value, then prorating it for the applicable time period.

Example Calculation

Example 1: $300,000 Home

  • Assessed Value: $300,000
  • Less Homestead Credit: $0 (requires application)
  • Net Taxable Value: $300,000
  • Annual Tax: $300,000 × 0.0008795 = $2,638.50
  • Monthly Escrow: ~$220

Example 2: $600,000 Home

  • Assessed Value: $600,000
  • Less Homestead Credit: $0 (requires application)
  • Net Taxable Value: $600,000
  • Annual Tax: $600,000 × 0.0008795 = $5,277.00
  • Monthly Escrow: ~$440

Example 3: $1,000,000 Home

  • Assessed Value: $1,000,000
  • Less Homestead Credit: $0 (requires application)
  • Net Taxable Value: $1,000,000
  • Annual Tax: $1,000,000 × 0.0008795 = $8,795.00
  • Monthly Escrow: ~$733

Note: Homestead and other tax credits require annual application and are not automatically applied. Contact the Armstrong County Assessment Office at 724-548-3217 for credit applications.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Armstrong County require property tax escrow accounts to ensure timely tax payments. Your lender collects monthly payments equal to 1/12 of your estimated annual property tax bill, plus a cushion typically equal to 2-3 months of payments. The escrow account pays your property taxes when they become due in July and November.

Lenders must provide annual escrow statements showing account activity and any required adjustments. If your property taxes increase due to rate changes or reassessment, your monthly escrow payment will be adjusted accordingly. Property owners can verify their tax information directly with the Armstrong County Tax Collector to ensure escrow payments match actual tax bills. If you pay taxes directly without escrow, remember that the first installment is due July 10 and the second installment is due November 15 for the 2026 tax year.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
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  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Armstrong County for 2026? A: The first installment is due July 10, 2026, and the second installment is due November 15, 2026.

Q: What tax credits are available and do they apply automatically? A: Tax credits such as homestead and farmstead exclusions are available but require annual application by March 1. Contact the Armstrong County Assessment Office at 724-548-3217 for applications. Credits are NOT automatic.

Q: How does the homestead credit work? A: The homestead credit limits annual assessment increases rather than reducing market value. It caps assessment growth but requires filing an application by March 1 each year. Funding comes from gaming revenue and is not guaranteed.

Q: How often are properties reassessed in Armstrong County? A: Pennsylvania requires county-wide reassessments periodically, but schedules vary. Contact the Assessment Office for current reassessment information and appeal procedures.

Q: What happens if I pay my property taxes late? A: Late payments incur penalties and interest charges. Contact your local tax collector immediately if you cannot meet the July or November deadlines to discuss payment options.

Q: Can I pay property taxes online? A: Payment options vary by municipality within Armstrong County. Contact your local tax collector to inquire about online payment availability for your specific area.

Q: Why do tax rates vary within Armstrong County? A: Different school districts, boroughs, and townships set their own millage rates annually. Your total rate depends on which combination of taxing authorities serve your property location.

Q: How do I apply for property tax relief programs? A: Applications for property tax relief programs must be submitted by March 1 to the Armstrong County Assessment Office. Call 724-548-3217 for specific program requirements and applications.

Q: What triggers a supplemental tax bill? A: New construction completion, ownership changes, major improvements, or zoning changes can trigger supplemental taxes calculated from the change date through the fiscal year end.

Q: How do I appeal my property assessment? A: Contact the Armstrong County Assessment Office at 724-548-3217 for appeal procedures and deadlines, which are typically within 30-40 days of receiving assessment notices.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
State
2025-26 Real Estate Tax Ratespa.gov
02
County
Updated 9/9/25 DISTRICT 2025 COUNTY R/E MILLAGE 2025 ...co.armstrong.pa.us
03
County
ARMSTRONG COUNTY 2025 DISTRICT 10 SPRING ...pa.gov
04
Tax Doc
Dear Property Owner, The Taxpayer Relief Act, ACT 1 of ...co.armstrong.pa.us
05
County
Tax Collection - Washington Township Armstrong County PAwashingtontwpacpa.gov
06
County
Assessment - Armstrong Countyco.armstrong.pa.us
07
County
Armstrong County, Pennsylvania Application for Homestead ...co.armstrong.pa.us
08
County
YES NO YES NO - Armstrong Countyco.armstrong.pa.us
09
County
recorder of deeds/armstrong county, pennsylvaniaco.armstrong.pa.us
10
County
armstrong county, pennsylvania - register of willsco.armstrong.pa.us
All sources verified as of 2025 Tax Year

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