Property owners in Allegheny County pay three separate property tax bills each year: one from the county, one from the municipality, and one from the local school district. Each taxing body sets its own millage rate and its own payment schedule, so your total is the sum of three independent obligations calculated against the same assessed value. The school district portion is usually the largest of the three.
How Your Bill Is Calculated
You do not pay tax on your home’s full market value. Pennsylvania does not reassess properties every year, so Allegheny County applies a Common Level Ratio (CLR), published annually by the State Tax Equalization Board, to convert current market values back to the county’s 2012 base year. For 2026, the CLR is 50.14%, so a home worth $200,000 on the open market has an assessed value of about $100,280 for tax purposes.1Allegheny County. Frequently Asked Questions
Each taxing body then applies its own millage rate to that assessed value. One mill equals $1 of tax per $1,000 of assessed value. The county’s 2025 millage was 6.43 mills, which works out to $6.43 per $1,000 assessed.2Allegheny County Treasurer Office. Real Estate Tax Your municipality and school district each add their own millage.
The arithmetic: multiply your assessed value by each of the three millage rates, then add the results. A home assessed at $100,000 in an area with a combined 30 mills across all three bodies would owe $3,000 for the year.
Exemptions That Lower What You Owe
Several programs reduce either your taxable assessment or your bill directly. If you qualify for one and don’t apply, you overpay every year until you do.
Homestead Exclusion (Act 50)
If you own and occupy your home as a primary residence, the Homestead Exclusion removes the first $18,000 of assessed value from your county tax calculation.3Allegheny County. Homestead Farmstead Exclusion Act 50 Rental properties and second homes do not qualify. You apply once, and the exclusion stays in place until you sell or move out.
Senior Citizen Tax Relief (Act 77)
Act 77 gives qualifying seniors a 30% discount on the county portion of their real estate taxes. You must meet all three conditions: be at least 60 (or a surviving spouse aged 50 to 60, or permanently disabled and aged 18 to 60); have owned and lived in your Allegheny County home for at least 10 consecutive years; and have a gross household income of $30,000 or less. When calculating income, only 50% of Social Security, SSI, and Railroad Retirement Tier 1 benefits counts; other income counts in full.4Allegheny County Treasurer Office. Act 77 Senior Tax Relief Program
Owners who moved within the county during the 10-year window still qualify, as long as the occupancy was continuous. The discount applies only to your county bill, not your municipal or school district taxes.
Disabled Veteran Exemption
Veterans with a 100% permanent service-connected disability rating from the VA can receive a full exemption from property taxes on their primary residence. The exemption also covers veterans rated as totally disabled due to individual unemployability, and those with service-connected blindness, paraplegia, or loss of two or more limbs. Surviving spouses of qualifying veterans may also be eligible. Applicants with household income at or below $114,637 receive a presumption of financial need; those above that threshold can still qualify by showing monthly expenses exceed income.5Commonwealth of Pennsylvania. Real Estate Tax Exemption
Clean and Green (Act 515)
Owners of larger tracts used for farming, forest reserves, or open recreational land can enroll in Clean and Green, which taxes enrolled land at its use value rather than market value. The three qualifying categories (Agricultural Use, Agricultural Reserve, and Forest Reserve) each require at least 10 contiguous acres. Agricultural Use properties under 10 acres can still qualify if they produce at least $2,000 in annual farm income.6Commonwealth of Pennsylvania. Clean and Green Withdrawing land from the program triggers rollback taxes: you owe the difference between what you paid under use-value assessment and what you would have paid at market value, typically going back seven years, plus interest.
Appealing Your Assessment
If comparable homes in your neighborhood are selling for less than your assessment implies, an annual appeal to the Board of Property Assessment Appeals and Review (BPAAR) is usually where you can save the most.
The Filing Window
The appeal window does not match the calendar year. For tax year 2027, applications may be submitted between July 1, 2026, and September 1, 2026.7Allegheny County. Board of Property Assessment Appeals and Review Miss September 1 and you wait a full year for the next chance. Appeals can be filed online through the county portal or by mail.
Evidence That Works
The county’s assessment is presumed correct until you prove otherwise, so concrete evidence matters. The strongest is a recent appraisal from a licensed appraiser. Comparable sales data for similar nearby homes is a close second. Photographs of physical problems that reduce value (foundation cracks, roof damage, drainage issues) help as well. You do not attach evidence to the appeal form itself; you bring it to the hearing.8Allegheny County. Special Appeal Form
What Happens at the Hearing
After you file, the board schedules a hearing and mails notice. A hearing officer reviews evidence from you and from any opposing parties, which may include the school district. The board then mails a written decision. If you disagree with it, you can appeal further to the Allegheny County Court of Common Pleas.
The CLR drives the final number. If you prove your home’s market value is $200,000, the board applies the 2026 CLR of 50.14% to arrive at an assessed value of roughly $100,280.1Allegheny County. Frequently Asked Questions
Payment Schedule and Late Penalties
The 2026 county tax calendar rewards paying early and punishes paying late.
- Through March 31, 2026: pay during the discount period and you take 2% off the total.
- April 1 through April 30, 2026: the face amount is due, with no discount and no penalty.
- Beginning May 1, 2026: a one-time 5% penalty is added to the gross tax, and 1% interest accrues each month on the outstanding balance.
These dates apply to the county bill only.9Allegheny County Treasurer Office. 2026 Allegheny Real Estate Tax Bills Are Available Now Municipal and school district bills arrive on their own schedules, usually later in the year, each with its own discount, face, and penalty periods. Check the dates on every bill separately.
Payment can be made by e-check through the Treasurer’s online portal (no fee), by debit or credit card (fees apply), by mail to the Treasurer’s Office with your Parcel ID referenced, or in person at the County Courthouse.10Allegheny County Treasurer Office. e-Payments and e-Billing If your mortgage company handles taxes through escrow, call them at 412-350-4100 to confirm they are paying on time.
If You Can’t Pay
Unpaid taxes escalate. After the 5% penalty and monthly interest start accruing, the county eventually moves the property toward a tax upset sale, where it is auctioned to recover delinquent taxes, penalties, and interest. The minimum bid is the total owed. If the property fails to sell there, it can proceed to a judicial (or “free and clear”) sale, where it may sell for less than the total debt and the former owner loses all equity.
The timeline from first delinquency to sale usually runs a couple of years, but the balance keeps growing the whole time. Call the Treasurer’s Office at 412-350-4636 before the bill becomes delinquent if you need to work out a payment arrangement; those are easier to negotiate before penalties attach.
Escrow and the Federal SALT Deduction
If your mortgage includes an escrow account, your lender collects a share of your annual taxes with each monthly payment. When your assessment or a millage rate rises, the escrow can fall short and your lender spreads the shortfall across future payments, pushing your mortgage payment up even though the loan terms haven’t changed. A successful appeal works in reverse: escrow drops and the monthly payment should too. If an assessment change doesn’t show up in your payment, call your servicer to confirm they are using the updated figure.
If you itemize on your federal return, Allegheny County property taxes count toward the state and local tax (SALT) deduction. For tax year 2026, SALT is capped at $40,400 for most filers and $20,200 for married filing separately. That cap covers state income tax, local income tax, and property tax combined, so anything above the cap gives no federal benefit. These limits were set by the One Big Beautiful Bill and run through tax year 2029.