Philadelphia tax abatement expiration makes the remaining exempt improvement value taxable. Buying an abated home does not start another ten years: a resale buyer receives the existing residential benefit’s remaining term, subject to continued eligibility. The City’s Real Estate Tax regulations establish these property-based exemptions and their ten-year limits.

To budget for expiration, start with the property’s approved schedule and assessed values. Then calculate the tax without the abatement, stating your assumptions about future assessments, tax rates and other relief.

Establish the remaining term before comparing payments

Start with the seller’s approval from the Office of Property Assessment (OPA) and the implemented abatement dates. An advertised “ten-year abatement” describes the program’s original duration, not necessarily the time remaining when you buy.

Collect three sets of records:

• Property identification: the address and OPA account number from Philadelphia’s property lookup. For a condominium, match the specific unit.
• Abatement records: the approved program or ordinance, original application date, implementation confirmation, start and end dates, and exempt assessment.
• Tax and valuation records: the 2026 tax bill and 2027 valuation notice, with land, improvements, exemptions and taxable value shown separately.

The next-year notice matters. In its July 20, 2026 guidance, the City said OPA had mailed 2027 valuation notices. The current bill and next-year assessment describe different periods; label each year in your worksheet.

If documents disagree or leave the timing unclear, ask OPA’s Abatement Unit at abatements@phila.gov to confirm the active benefit, expiration date and treatment of any final partial year. Check both approval and implementation: OPA’s new-construction instructions require a signed owner’s certificate after approval to implement the abatement.

Keep OPA’s confirmation with the purchase documents you assemble using our homebuying guides.

Identify which residential schedule applies

The original exemption application date—not the resale date—determines which schedule applies to residential new construction under Ordinance 1456-A:

Both exemptions terminate after year ten. These provisions appear in Bill 200366, signed December 15, 2020.

For the declining schedule, each abatement year covers twelve months from the start date and need not match the calendar year. OPA’s new-construction instructions also say established start and end dates do not change. Count from those dates, not your closing anniversary.

Residential rehabilitation under Ordinance 961 follows a different rule: the qualifying increase in assessed value receives a ten-year exemption. OPA’s rehabilitation instructions explain that the approved improvement value remains exempt while other assessment changes can affect the bill. Do not apply the declining new-construction schedule to a rehabilitation approval.

The separate State Act 175 development abatement lasts up to 30 months and ends earlier if the property is completed or sold. Its approval does not establish a remaining ten-year residential benefit.

Calculate Philadelphia taxes after abatement

Separate the assessment into land, improvements and approved exempt improvement value. These residential abatements exempt qualifying construction or improvements; land remains taxable. Rehabilitation relief may cover only part of the building’s assessed value, so “taxes on land only” is not a safe assumption for every abated home. City regulations, sections 402 and 404

For a property with no other relief, compare:

• While abated: (total assessed value − approved abated value) × tax rate.
• After expiration: total assessed value × tax rate.
• With subsequent approved relief: recalculate using that program’s rules and effective year.

Use assessed value, rather than the asking price. The City’s July 20, 2026 guidance identifies a combined City and School District rate of 1.3998%, also applicable for 2027. Use 0.013998 as the multiplier. For a later expiration, the assessment and rate then in force remain assumptions.

A hypothetical existing bill and post-expiration budget

Suppose an older new-construction abatement expires December 31, 2028. Assume the property’s 2026 assessment is $500,000: $100,000 of land and $400,000 of improvements, with all improvement value qualifying for the existing 100% exemption.

For this illustration only, hold the assessment and 1.3998% rate constant through 2029. Assume no other relief except in the conditional Homestead row.

Without other relief, expiration adds $466.60 a month to the tax budget. With Homestead, the increase from the abated bill is $349.95 a month. That third row assumes eligible owner occupancy, timely approval and continuation of the exemption amount described in the City’s June 22, 2026 guidance.

For comparison, use the same assumed values and rate to model year ten of a declining abatement. Only $40,000 of improvements remains exempt, putting annualized tax at $6,439.08. Expiration adds $559.92 annually, or $46.66 monthly, before other relief. Homestead could offset that final step if approved and effective, but its timing must be confirmed.

These monthly figures are annual taxes divided by twelve, not promised escrow payments. The declining-schedule figure is annualized; it does not calculate a partial calendar year’s bill. Holding the assessment and rate constant isolates expiration’s effect. To test your budget beyond that effect, also model higher assessments and rates.

Check when Homestead can enter the calculation

The City’s June 2026 guidance states that the Homestead Exemption removes $100,000 from taxable value for eligible owners who use the home as their primary residence. An active ten-year tax abatement disqualifies the property, as does enrollment in LOOP. Do not subtract Homestead from an already abated assessment.

Plan the application before the transition. The City’s Homestead service guidance says owners may apply after the abatement expires. Its June 22 announcement gives December 1, 2026 as the general deadline for benefits on the 2027 bill. If your abatement ends near that deadline or at year-end, ask Revenue to confirm the first eligible tax year and filing procedure. Do not assume an automatic switch.

The English application released November 7, 2025 asks for owner information, the property address, OPA number and primary-residence details. It identifies October 1 as the early filing date for approval to appear on the next bill and December 1 as the final annual deadline. The Homestead hotline is 215-686-9200. Keep the estimate without relief in your budget until eligibility and the effective year are established.

Put the full tax cost into affordability

Run your home affordability calculation with the current tax cost and again with the post-expiration estimate. If the tool requests a tax percentage, enter the modeled annual tax divided by the purchase price, expressed as a percentage. If it requests annual dollars, enter the modeled bill directly.

Include insurance, association dues, maintenance and other recurring expenses in the wider housing affordability and ownership-cost budget. Test the first full year without the abatement even if you expect to sell before then.

Give the approved schedule and both tax scenarios to your lender or mortgage servicer. Ask which tax amount its payment estimate uses and when it will review escrow. The CFPB’s mortgage servicing guidance explains that an escrow analysis projects future payments and identifies shortages. Repaying a shortage can add a cash-flow obligation alongside the higher ongoing tax cost.

Before relying on the budget, obtain a dated calculation tied to the correct assessment year, confirmed abatement dates and explicit assumptions about other relief. Have the lender show the resulting total monthly payment so you can judge the cost of keeping the home after the benefit ends.