How to Appeal Property Taxes in New York: Grievance Day Guide
TL;DR
New York property owners can challenge their assessments by filing a grievance with their local Board of Assessment Review (BAR) on or before Grievance Day. In most towns, Grievance Day is the fourth Tuesday in May (May 26, 2026). NYC has its own process with different deadlines. Filing is free, and you'll need comparable sales data to support your case.
New York property taxes are among the highest in the nation, with an average effective rate of about 1.62%. Outside New York City, many suburban and upstate communities have rates well above 2%. For a homeowner with a $400,000 assessed property, that's $6,500-$8,000+ in annual taxes.
The state gives every property owner the right to challenge their assessment. The process centers around a specific date each year called Grievance Day, and understanding how it works is essential to getting a fair deal.
Grievance Day: What It Is and When It Happens
Grievance Day is the day each municipality's Board of Assessment Review (BAR) meets to hear complaints about property assessments. In most towns outside of cities, Grievance Day is the fourth Tuesday in May. For 2026, that's May 26.
Cities and villages may have different dates. Some cities hold Grievance Day in February or March. Check with your municipal assessor for the exact date.
You must file your grievance application (Form RP-524) on or before Grievance Day. Some municipalities allow you to submit the form in advance by mail, while others require you to appear in person on that day.
New York City: A Different System
NYC operates under its own property tax system with four classes of property. Class 1 (1-3 family homes) is assessed at 6% of market value. Class 2 (apartment buildings) is assessed at 45%. The system is widely criticized as inequitable.
For NYC properties, appeals go to the NYC Tax Commission rather than a local BAR. The deadline to file is typically March 1 for most property types (March 15, 2026 for Class 1 properties). File online through the NYC Tax Commission website.
Step-by-Step: Filing a Property Tax Grievance in New York
Step 1: Check Your Assessment
Tentative assessment rolls are published on or before May 1 in most municipalities. Check your assessment online or at the assessor's office. Compare it to your home's actual market value and to the assessments of similar properties.
Step 2: Complete Form RP-524
Form RP-524 (Complaint on Real Property Assessment) is the standard grievance form statewide. You can download it from the NY Department of Taxation and Finance website. Fill in your property information, the current assessment, and the value you believe is correct.
On the form, you'll need to indicate the basis for your complaint:
- Unequal assessment (your property is assessed at a higher percentage of value than other properties)
- Excessive assessment (the assessed value exceeds the full market value)
- Unlawful assessment (error in procedure or application of law)
- Misclassification (wrong property class)
Step 3: Gather Evidence
Your evidence should support the value you're claiming. Key types include:
- Comparable sales: 3-5 similar homes that sold for less than your assessed value
- Assessment comparisons: Similar properties assessed at lower values (for unequal assessment claims)
- A recent appraisal: From a purchase or refinance
- Property condition evidence: Photos and repair estimates for issues that reduce value
- Income data: For rental properties, showing the value based on actual income
Step 4: File on or Before Grievance Day
Submit Form RP-524 with your evidence to the Board of Assessment Review. Some towns accept submissions by mail in advance. Others require you to appear and present your case on Grievance Day. Call your assessor's office to confirm your town's procedure.
Step 5: BAR Decision
The BAR reviews grievances and makes decisions, which are reflected on the final assessment roll (published on or before July 1 in most towns). If the BAR reduces your assessment, the lower value is used for tax calculations.
Step 6: Small Claims Assessment Review (SCAR) or Article 7
If the BAR denies your grievance or you're not satisfied with the result, you have two further options:
- SCAR: Small Claims Assessment Review, available for owner-occupied 1-4 family homes with assessments under $450,000. No attorney needed. Filing fee is $30. File within 30 days of the final assessment roll.
- Article 7 proceeding: A formal court case filed in Supreme Court within 30 days of the final assessment roll. More formal, and an attorney is recommended for larger or more complex cases.
The Equalization Rate Factor
New York municipalities don't all assess at 100% of market value. Some assess at 50%, others at varying percentages. The state publishes equalization rates for each municipality that reflect the relationship between assessed values and market values.
To determine if your assessment is too high, divide your assessed value by the equalization rate. If the result exceeds your property's actual market value, you may be over-assessed.
Example: Assessed value is $200,000 and the equalization rate is 60%. Your implied market value is $200,000 / 0.60 = $333,333. If your home would actually sell for $300,000, you're being over-assessed.
Common Assessment Issues in New York
Outdated Assessments
Many New York municipalities haven't done a full revaluation in decades. This creates massive inequities where similar homes have wildly different assessments based on when they were last reviewed. If your property was recently updated or reassessed while your neighbors' were not, you may be paying more than your fair share.
Condition Issues Not Reflected
Assessors often don't inspect interior conditions. If your home has significant issues like outdated systems, water damage, or needed renovations that the assessor doesn't know about, your assessment may be too high.
Incorrect Property Data
Check your property card for accuracy. Wrong square footage, extra bathrooms, finished basement when it's unfinished, wrong lot size. These errors are more common than you'd think and directly inflate your assessment.
STAR Exemptions
Make sure you're receiving the STAR (School Tax Relief) benefit before appealing:
- Basic STAR: Available to homeowners with income under $500,000 (administered as a credit, not exemption, for new applicants)
- Enhanced STAR: For homeowners 65+ with income under $98,700 (2026 figure may be adjusted)
New applicants register through the state rather than their local assessor. The state determines eligibility based on income verification.
How PropertyTaxFight Can Help
Grievance Day comes once a year. If you miss it or show up unprepared, you're stuck with your assessment for another full year. PropertyTaxFight helps you build a data-backed case with proper comparable sales and assessment equity analysis, so you make the most of your one shot at the BAR.
Frequently Asked Questions
When is Grievance Day in New York?
For most towns, Grievance Day is the fourth Tuesday in May. In 2026, that's May 26. Cities and villages may have different dates, sometimes in February, March, or other months. Check with your local assessor's office.
Is there a fee to file a property tax grievance in New York?
Filing a grievance with the Board of Assessment Review is free. If you proceed to Small Claims Assessment Review (SCAR), the filing fee is $30. Article 7 proceedings in Supreme Court have higher filing fees and typically require attorney representation.
What is Small Claims Assessment Review (SCAR)?
SCAR is a simplified appeal process for owner-occupied 1-4 family homes with assessments under $450,000. It's less formal than a court proceeding, doesn't require an attorney, and costs only $30 to file. You present your case to a hearing officer who makes a binding determination.
How is the New York City property tax appeal different?
NYC appeals go to the NYC Tax Commission instead of a local BAR. The deadline is typically March 1 (March 15 for Class 1 properties). NYC uses a four-class system with different assessment ratios, making the process more complex. Online filing is available at the Tax Commission website.
What is the equalization rate?
The equalization rate is the state's estimate of the percentage of market value at which a municipality assesses property. If the rate is 50%, an assessment of $150,000 implies a market value of $300,000. You can use this to determine if your implied market value exceeds your home's actual worth.
Can my assessment increase if I file a grievance?
The BAR can technically increase your assessment, but this almost never happens. The BAR's role is to review your complaint, and in practice they either reduce the assessment or leave it unchanged. Don't let this theoretical risk stop you from filing.
Do I need to appear in person on Grievance Day?
It depends on your municipality. Some towns allow you to mail in Form RP-524 before Grievance Day. Others require or prefer in-person appearances. Contact your assessor's office in advance to confirm.
How long does the assessment grievance process take?
The BAR decision is typically reflected on the final assessment roll, published by July 1. If you proceed to SCAR or Article 7, it can take several additional months to over a year for resolution. Tax bills are issued based on whatever value is current when the bill is calculated.
What evidence works best for a New York grievance?
Comparable sales are the strongest evidence. Find 3-5 sales of similar properties that support a lower value. Assessment comparisons showing similar properties assessed at lower rates are also effective for unequal assessment claims. Photos and repair estimates help document condition issues.
Can I grieve my assessment if I just bought the house?
Yes. If the assessed value (adjusted for the equalization rate) exceeds your purchase price, your sale is strong evidence. Even if they match, you can argue on equity grounds that similar properties are assessed at lower relative values.