NYC Tax Abatements Explained: What Is an Abatement, and Which Programs Still Exist in 2026?
A tax abatement cuts the bill after it is calculated, an exemption cuts assessed value first. Every NYC program, and its status in September 2026.
Updated September 2026. Two program dates are in motion. HPD is accepting J-51 Reform applications only for work completed on or before June 29, 2026, and says a State-authorized extension to June 30, 2036 still needs the City Council to enact it. ICAP is the opposite case, open until 2029: the Department of Finance takes preliminary applications until March 1, 2029, and grants no benefit where the first building permit issues after April 1, 2029.
A tax abatement is one of the two ways New York City lowers a property tax bill, and it is the one people ask about most. The word turns up in a listing, a closing statement, board minutes, a Department of Finance notice, almost always unexplained. This page covers the definition, the difference from an exemption, where each lands on a bill, and what the city still runs in September 2026.
What is a tax abatement?
A tax abatement is a reduction in the tax itself, applied after the tax has been calculated. The Department of Finance puts it in one line: abatements reduce your taxes after they have been calculated. An abatement is a credit against dollars owed, not a change to what the city thinks the property is worth.
A city grants one to buy something: new industrial space, a rehabilitated apartment building, a childcare center, solar panels. The owner gets a smaller bill for a set number of years, and the city gets the building. An abatement is nearly always temporary, conditional on continued qualifying use, and something you have to apply for. Two agencies run them: HPD determines eligibility for the housing programs, Finance applies the approved benefits, and Finance administers ICAP and the co-op and condo abatement itself.
What is the difference between a tax abatement and a tax exemption?
The two words get used interchangeably and they are not interchangeable. Finance’s glossary separates them cleanly: exemptions reduce your property’s assessed value before your taxes are calculated, while abatements reduce your taxes after they have been calculated.
That difference decides what a benefit is worth. An exemption comes off assessed value, so its cash value follows the rate for the property’s tax class: Finance lists the tax year 2026 rates as 19.843% in class 1, 12.439% in class 2, 11.108% in class 3 and 10.848% in class 4. The same exemption is worth roughly twice as much on a small house as on an office building. An abatement is already denominated in tax dollars.
HPD puts it in program terms: an exemption excludes the increase in assessed value that construction or rehabilitation produces, while an abatement credits the taxes owed against the cost of the improvement. So 421-a and 485-x are exemptions, ICAP and the co-op and condo abatement are abatements, and J-51 was both.
How does a tax abatement work on a New York City property tax bill?
Finance builds the bill in a fixed order. Market value comes first, multiplied by the level of assessment, 6% for tax class 1 and 45% for classes 2, 3 and 4, then capped or phased in by class, to give assessed value. Exemptions come off next, and the result is the taxable value, which times the class rate produces the annual tax.
Only then does an abatement appear. Finance is explicit that the exempt value does not include abatements, which are subtracted from the annual property tax amount. A benefit therefore either cuts assessed value or cuts the tax after it is struck, and which one it does tells you what kind of program you are in. The bill lists any exemptions or abatements you receive as their own lines.
Which NYC tax abatement and exemption programs still exist in 2026?
Some are open, some are closed but still paying out on benefits already granted, and one closed in 2008 and survives only through renewals.
| Program | The benefit | Status, September 2026 |
|---|---|---|
| ICAP, Industrial and Commercial Abatement Program | Abatement of up to 25 years for industrial and commercial buildings built, modernized, expanded or improved. Requires spending at least 30% of taxable assessed value within four years of the permit. (who qualifies) | Open. Preliminary applications until March 1, 2029, filed before the building permit is obtained; no benefit where the first permit issues after April 1, 2029. |
| ICIP, Industrial and Commercial Incentive Program | ICAP’s predecessor, structured as an exemption. | Ended in 2008. Kept only by filing a Certificate of Continuing Use. |
| 421-a (1-15), the old program | Exemption from the tax increase a new multiple dwelling produces: up to three construction years plus a 10, 15, 20 or 25-year benefit. (421-a explained) | Closed. Construction had to commence on or before December 31, 2015. |
| 421-a (16), Affordable New York | The 2016 rebuild, renamed the Affordable New York Housing Program in 2017, with required affordable units and a 35 or 40-year compliance period. | Closed to new starts. Commencement January 1, 2016 to June 15, 2022, completion by June 15, 2026, or June 15, 2031 for owners who filed a Letter of Intent by September 12, 2024 on affordability option A, B, D, E or F. |
| 485-x, Affordable Neighborhoods for New Yorkers | 421-a’s successor, adopted April 20, 2024. Exemption for buildings of six units or more with permanently affordable, permanently rent-stabilized units. Terms of 10, 20, 35 or 40 years by project size and zone. (485-x explained) | Open. Commencement through June 15, 2034, completion by June 15, 2038. |
| 467-m, Affordable Housing from Commercial Conversions | Exemption for rental housing created by converting a non-residential building, six units or more, hotels excluded. | Open. Conversions commencing after December 31, 2022 through June 30, 2031, completed by December 31, 2039. |
| J-51 | A combined exemption and abatement for renovating a residential apartment building. (J-51 explained) | Expired for work completed after June 29, 2022. Granted benefits run their term. |
| J-51 Reform (J-51 R) | The replacement. Abatement of up to 8 1/3% of certified reasonable cost each year for up to 20 years, capped at 70% of that cost, minimum scope $1,500 per unit. | Partly open. Only for work completed on or before June 29, 2026. An authorized extension to June 30, 2036 awaits City Council action. |
| Co-op and condo abatement | Abatement of 28.1%, 25.2%, 22.5% or 17.5% of the unit’s taxes, set by the development’s average assessed value per unit. Primary residence only, bought on or before January 5. (more) | Open and annual. The board or its agent files for the whole development. Window August 3 to February 15. |
Smaller abatements sit alongside these. Green Roof pays $10 per square foot, or $15 in the districts Finance designates, capped at the lesser of $200,000 or that year’s taxes. The Solar Electric Generating System abatement is worth 7.5% of installation cost a year for four years, for service starting between January 1, 2024 and January 1, 2035, capped at $62,500 or the annual taxes. The Childcare Center Abatement covers up to $75 per square foot or $750,000 in a childcare desert, $35 or $350,000 elsewhere. The Major Capital Improvement abatement runs one tax year.
What happens when a benefit lapses or is revoked?
Most of these benefits are conditional on continued qualifying use, and the city checks. Properties receiving ICAP, ICIP or the not-for-profit exemption must file a Certificate of Continuing Use, every two years for ICAP and annually for the other two; in the firm’s renewal practice the filings fall due January 5 for the tax year beginning that July 1. Finance has accepted late filings until March 1. Miss it and Finance can suspend the benefit, and the property returns to full taxation until it is current. ICIP has been closed since 2008, so a lost benefit there cannot be reapplied for. See exemption renewals.
Denials and revocations run on short clocks. A unit owner can dispute a co-op or condo abatement denial only where it rested on primary residency eligibility, and only within 30 days of the notice date. Effective December 1, 2025, a managing agent or board may also dispute a denial, for benefits in tax year 2025-26 or later. A diminished, suspended or revoked benefit is contested with the Tax Commission and with Finance: reinstatement of benefits.
How do I find out what abatements a property already has?
Start with the property record and the bill. Finance’s online property account at nyc.gov/nycproperty carries current benefits by borough, block and lot, and Finance tells ICAP holders to view their benefits there. The bill lists any exemptions or abatements received as separate lines.
Finance also publishes lists: a borough-by-borough roster of 421-a exempt properties drawn from the fiscal 2026/2027 final roll, and a J-51 exempt and abated property list searchable by tax year. All NYC property data is downloadable from the NYC Open Data portal. For a pending application, Finance runs a separate exemption status check, and an approved benefit appears on a future bill, not the current one.
What does it cost to ask MGNY?
Nothing. A real person answers at (212) 343-1111, right away, and the consultation is free. You engage us only if you want the filing handled for you. MGNY has worked NYC property tax since 2008, across 900+ tax abatement developments, with $23.6M in tax refunds secured for owners.
Not sure which program a building qualifies for, or whether a benefit is about to lapse?
Call (212) 343-1111 and we will look at the property with you, or start with the ICAP explainer if the building is commercial.
Sources, all read September 2026. NYC Department of Finance: Definitions of Property Assessment Terms, Calculating Your Annual Property Tax, Property Tax Rates, Bills and Payments, and the ICAP, ICIP, 421a, J-51, co-op and condo abatement, Green Roof, Solar, Childcare Center and Major Capital Improvement pages, plus the guidance on appealing co-op and condo denials. NYC Department of Housing Preservation and Development: About Tax Incentives and the 421-a, 485-x, 467-m, J-51 and J-51 Reform pages. MGNY Consulting is a private consulting firm and is not affiliated with the NYC Department of Finance or the NYC Department of Housing Preservation and Development.
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