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How to Read Your NYC Property Tax Bill: Assessed Value, Exemptions, Abatements, and What Every Line Item Means (FY2026 Guide)
A plain-English walkthrough of every line item on your NYC property tax bill: assessed value, tax class rates, exemptions, and the co-op/condo abatement, J-51, and 421-a abatements explained for FY2026.

Your NYC property tax bill arrives twice a year, or four times a year if your property is assessed at $250,000 or less — and for most owners, large parts of it are a mystery. What is an “assessed value” and why is it lower than what you paid for your place? What is the difference between an exemption and an abatement? Why does your neighbor in the same building pay less than you? And what exactly is a J-51 or 421-a line doing on your bill?

This guide walks through every major section of an NYC property tax bill, explains the math, and covers the main abatements — J-51, 421-a, and the co-op/condo abatement — that reduce what thousands of New Yorkers actually owe. All figures are for Fiscal Year 2026 (July 1, 2025 through June 30, 2026).

The Basic Math: How Your Bill Amount Is Calculated

The NYC Department of Finance (DOF) determines your property tax using a two-step process. First, it estimates your property’s market value. Second, it multiplies that market value by an assessment ratio to arrive at an “assessed value.” Then it applies the tax rate for your property class to that assessed value — after subtracting any exemptions — to produce your annual tax. Abatements, which work differently, are then subtracted from the resulting dollar amount.

The formula looks like this:

(Market Value × Assessment Ratio) − Exemption Value = Taxable Value
Taxable Value × Tax Rate = Annual Tax (before abatements)
Annual Tax − Abatement Credits = What You Owe

Each of those variables is explained below.

Your Property’s Market Value: Not What You Think

The DOF estimates market value independently — it does not simply use your purchase price or a Zillow estimate. For one-to-three-family homes (Tax Class 1), the city uses comparable sales. For larger residential buildings and co-ops (Tax Class 2), it uses income capitalization. For utilities (Tax Class 3) and commercial properties (Tax Class 4), different approaches apply.

The DOF’s market value estimate will often differ from what you could sell the property for today. That is by design: the system is meant to create stability in the tax base, not to perfectly track the real estate market.

The Assessment Ratio: Why Taxable Value Is Much Lower Than Market Value

New York State law requires the city to assess property at a fraction of market value. For Tax Class 1 properties — one-, two-, and three-family homes — the assessment ratio is 6%. For all other classes (2, 3, and 4), it is 45%.

This means a Class 1 home the city values at $900,000 has an assessed value of only $54,000 (6% × $900,000). A Class 2 apartment building valued at $2 million has an assessed value of $900,000 (45% × $2,000,000).

On top of the assessment ratio, state law places caps on how fast assessed value can increase:

  • Class 1: Assessed value cannot increase more than 6% in any single year, or more than 20% over five years.
  • Class 2 (10 units or fewer): Assessed value cannot increase more than 8% per year, or more than 30% over five years.

These caps explain why many longtime owners pay far less than a new buyer would for the same type of property: their assessed values are still catching up to market-value growth that happened years ago. For Class 2 buildings with 11 or more units and all Class 4 properties, assessment changes are phased in over five years instead.

FY2026 Tax Rates by Class

The NYC City Council sets new tax rates each year. For Fiscal Year 2026, the rates — verified against the NYC Department of Finance’s official tax rate page — are:

  • Class 1 (1–3 family homes): 19.843%
  • Class 2 (co-ops, condos, rental buildings): 12.439%
  • Class 3 (utilities): 11.108%
  • Class 4 (commercial): 10.848%

A Class 1 homeowner with a taxable value of $30,000 owes $30,000 × 0.19843 = $5,952.90 annually before any abatements. A co-op unit with a taxable value of $20,000 sits in Class 2 and owes $20,000 × 0.12439 = $2,487.80.

Exemptions: Subtracted Before the Tax Rate Is Applied

An exemption reduces your taxable value — the number you multiply by the tax rate. Because the reduction happens before the multiplication, exemptions save you (tax rate × exemption value) in dollars.

Common exemptions that show up on NYC property tax bills:

  • STAR (School Tax Relief): For primary-residence homeowners. The Basic STAR exemption reduces assessed value by a fixed amount; Enhanced STAR (for owners 65+ meeting income limits) provides a larger reduction. (See nyc.gov STAR page.)
  • SCHE (Senior Citizen Homeowners’ Exemption): For homeowners 65+ with income up to $58,399, reducing assessed value by 5% to 50% depending on income tier. Applied under NY Admin Code §11-245.3.
  • DHE (Disabled Homeowners’ Exemption): A parallel exemption for homeowners with qualifying disabilities. Income limits mirror SCHE.
  • Veterans Exemption: For eligible veterans and surviving spouses; the exempt amount depends on service type and disability status.
  • Clergy Exemption: For qualifying ministers, priests, and rabbis.

All exemptions reduce taxable value before the tax rate multiplication. Your tax bill will show a line for each exemption your property receives, labeled with the exemption type and the dollar amount of the reduction in assessed value.

Abatements: Subtracted After the Tax Rate Is Applied

This is where most property owners get confused. An abatement works differently from an exemption. Instead of reducing your taxable value before the multiplication, an abatement reduces the final dollar amount of your tax bill after the rate is applied. Your bill will show a line for each abatement, expressed in dollars, that is subtracted from your gross tax charge.

The three abatements most NYC property owners encounter are the Co-op/Condo Abatement, the J-51 Abatement, and the now-grandfathered 421-a Abatement (being replaced by 485-x). Each is explained below.

The Co-op and Condo Property Tax Abatement

If you own a co-op or condominium unit and use it as your primary residence, your building’s board or managing agent may be enrolled in the Cooperative and Condominium Property Tax Abatement. This is the most common abatement NYC condo and co-op owners see on their bills.

The abatement reduces your unit’s property tax by a percentage based on the development’s average assessed value per unit:

  • Average assessed value $50,000 or less: 28.1% abatement
  • Average assessed value $50,001–$55,000: 25.2% abatement
  • Average assessed value $55,001–$60,000: 22.5% abatement
  • Average assessed value $60,001 and above: 17.5% abatement

Key facts about this abatement:

  • Individual unit owners do not apply. The board or managing agent applies for the entire development via DOF’s online SmartFile system.
  • The development must be a Tax Class 2 property.
  • A building receiving the J-51 exemption, or the 421-a, 421-b, or 421-g commercial benefits, is not eligible (unless those benefits expire on June 30 of the tax year in question).
  • The filing deadline for 2026-27 was February 23, 2026 (extended from February 15).
  • For developments with 30+ units and an average unit assessed value above $60,000, a prevailing wage affidavit is also required.
  • If your unit qualifies but your board has not enrolled or renewed, the abatement will not appear on your bill — contact your board or managing agent.

To check whether your development is enrolled or to ask about renewal, call 311 or email the DOF through the contact form at nyc.gov/site/finance/about/contact-us-cca.page.

The J-51 Tax Exemption and Abatement

J-51 is a property tax exemption and abatement for owners of residential rental or converted buildings who make qualifying improvements or rehabilitation. If your building receives J-51, you will see a J-51 line on the tax bill reducing your gross charge.

The original J-51 program — governed by NY Admin Code §11-243 — covers work completed on or before June 29, 2022. The NYC Department of Housing Preservation and Development (HPD) determines eligibility; DOF administers the benefit. Approved owners file the J-51 Tax Exemption and Abatement Application (available at nyc.gov/site/finance/property/benefits-j51.page) along with HPD’s Certificate of Eligibility.

Important note as of 2026: The original J-51 program expired for new construction completions after June 29, 2022. A replacement program — J-51 Reform (J-51 R) — covers work completed between June 29, 2022 and June 29, 2026 and offers an as-of-right abatement for residential rehabilitation of Class A multiple dwellings. Applications for J-51 R must be filed with HPD within four months of the project’s completion date. For projects completed on or before December 30, 2024, the filing deadline was April 30, 2025. For more details, visit nyc.gov/site/hpd/services-and-information/tax-incentives-j-51.page.

If you live in a building that has a J-51 benefit, you will typically see it on the building’s tax bill — not your individual apartment bill, since most rental buildings pay property taxes at the building level. If you are a co-op or condo and your building has a J-51 exemption, note that your building is not eligible for the separate Co-op/Condo Abatement while the J-51 is active.

The 421-a Partial Tax Exemption

421-a is a partial property tax exemption for new residential construction and substantial rehabilitation in designated areas of New York City, established under NY Real Property Tax Law §421-a. Buildings that received 421-a when construction was completed received a phased-in exemption — typically full exemption at first, with the exempt percentage stepping down annually until the benefit expires. The exact duration and schedule depend on which of the eleven 421-a benefit types applies.

If you see a 421-a line on your building’s tax bill, it means the building was approved by HPD for the exemption and the exemption period is still active. You can look up whether a property has a 421-a benefit by searching the DOF’s 2026/2027 421-a exempt property lists by borough at nyc.gov/site/finance/property/benefits-421a.page.

The 421-a program itself expired for new applications after 2022. Its successor is the 485-x program (Affordable Housing from Commercial Conversions, or AHCC), which covers new construction and conversion projects going forward with updated affordability requirements. Buildings still in their 421-a benefit period continue to receive the exemption until it phases out according to their original benefit schedule — some buildings have benefits running through 2040 or beyond.

Note: Buildings receiving 421-a are not eligible for the co-op/condo abatement while the 421-a benefit is active, unless the 421-a benefit expires on June 30 of the tax year in which the abatement is sought.

Reading the Actual Bill: A Section-by-Section Walk

Your NYC property tax bill from the Department of Finance has several standard sections. Here is what each one means:

Property Information block: Shows your borough, block, and lot number (BBL), which is the city’s unique identifier for your parcel. It also shows your tax class and the billing cycle (quarterly or semi-annual).

Property Value section: Shows the DOF’s estimated market value and your assessed value (market value × assessment ratio). If applicable, it also shows the transitional assessed value — a phased-in figure used for Class 2 buildings with 11+ units and Class 4 properties.

Exemptions section: Lists each exemption (STAR, SCHE, veterans, etc.) and the dollar amount deducted from assessed value. The sum of these deductions produces your taxable value.

Tax Calculation section: Shows the taxable value multiplied by the tax rate. This is your gross annual tax charge before abatements.

Abatements section: Lists each abatement (co-op/condo abatement, J-51 abatement, 421-a exemption credit, etc.) and the dollar amount deducted from the gross charge. The net figure after abatements is your actual annual property tax.

Other Agency Charges: Your bill may also include charges from other city agencies — water and sewer charges from the NYC Department of Environmental Protection (DEP), or Environmental Control Board (ECB) judgments, for example. These are not property taxes but appear on the same bill. Do not confuse them with your tax amount.

Balance and Payment Due: Shows any prior balance, credits (such as overpayments), and the net amount due for the current quarter or semi-annual period. If you pay through escrow, your lender receives this bill and pays it on your behalf — check your escrow statements to confirm.

How to View Your Bill Online

You do not have to wait for a paper bill. The DOF posts property tax account information — including current and past bills, balances, and payment history — through the online property account tool. Go to nyc.gov/site/finance/property/property-bills-and-payments.page and click “View property tax account.” You will need your borough, block, and lot number (BBL), or you can search by address.

Payment notifications are also available: the DOF now lets owners register to receive alerts when payments are credited to their account.

What to Do If Something Looks Wrong

If you believe your market value estimate is incorrect, you can challenge it through the NYC Tax Commission. The window to file opens each January after the tentative assessment roll is released and closes in March. Forms vary by property type (TC101 for most Class 1 properties; TC109 for larger residential; TC106 for commercial). Call the Tax Commission at (212) 669-4410.

If an exemption or abatement you expect is missing from your bill, contact the DOF directly. Call 311 (and ask for Department of Finance) or email through nyc.gov/site/finance/about/contact-us-by-email.page. You can also schedule an in-person appointment at a DOF business center through that same page.

If you believe an abatement like the co-op/condo abatement has been lost because the board failed to renew, bring the issue to your building’s board of directors or managing agent — only they can refile the application.

Quick Reference: Key Contacts and Sources

Tax information in this article is informational only. Consult a tax professional or the NYC Department of Finance for guidance specific to your property and situation.

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