Assessment Ratio
6% (Class 1) / 45% (Class 2)
Grievance Deadline
March 1-16, 2026
Official Form
RP-524 / TC-101
Risk of Increase
Yes
How Assessment Works in New York
New York uses a class-based assessment system. Class 1 (1-3 family residential) is assessed at approximately 6% of market value. Class 2 (multifamily 4+ units) and Class 4 (commercial) are assessed at 45%. This means your assessed value should be a fraction of market value, not the full amount.
Risk of Increase
In New York, filing a grievance can result in your assessed value being increased. This is uncommon when you have strong evidence of over-assessment, but you should be aware of this possibility. ProtestMax only recommends filing when our analysis shows a clear case for reduction.
How to File in New York
For NYC properties, file online through the NYC Tax Commission website or by mail. Outside NYC, file with your local Board of Assessment Review (BAR).
Step-by-Step
New York Grievance Process
Review your tentative assessment on the NYC Finance website or your county's assessment roll (published January 15 in NYC).
Gather comparable sales evidence, recent appraisals, and income/expense data (for rental properties).
File your grievance application (RP-524 for outside NYC, or TC-101 for NYC) by the deadline.
Attend the hearing with the Assessment Review Commission or Board of Assessment Review.
Receive the determination. If denied, you can appeal to the Small Claims Assessment Review (SCAR) in most jurisdictions.
FAQ
New York Property Tax Grievance Questions
Can my assessment increase if I file a grievance in New York?
Yes. Unlike Texas, New York allows the assessor to review your property during a grievance and potentially increase your assessment. However, this is rare for residential properties. The potential savings typically outweigh this risk.
What is the difference between RP-524 and TC-101?
RP-524 is the grievance form used outside New York City. TC-101 is used for NYC properties filed with the NYC Tax Commission. ProtestMax generates the correct form based on your property location.
How does the 6% assessment ratio work?
If your home has a market value of $500,000, the assessed value should be approximately $30,000 (6% of $500,000). Your tax bill is calculated on this assessed value, not the full market value. If your assessed value implies a market value higher than comparable sales support, you have grounds to grieve.