Grievance Day Erie County NY 2026 — Everything You Need To Know
One day a year, every Erie County homeowner has the legal right to walk into their local assessor’s office and formally challenge their property tax assessment. That day in 2026 is Tuesday, May 26. This page tells you exactly what to bring, how to file, and what happens next.
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Grievance Day in Erie County NY in 2026 is Tuesday, May 26, 2026. Per New York Real Property Tax Law §512, Grievance Day is the fourth Tuesday of May statewide. Your completed Form RP-524 must be received by your local Board of Assessment Review by that date — not merely postmarked. Some Erie County municipalities have adopted alternate dates by local law — confirm with your specific town assessor. Erie County Real Property Tax Services: (716) 858-8333 · 95 Franklin St, Buffalo NY 14202.
What Is Grievance Day in New York?
Grievance Day is the one day per year when New York State homeowners can formally challenge their property tax assessment before the Board of Assessment Review (BAR). It is not a day to dispute your tax rate or your tax bill directly — it is specifically for challenging the assessed value that determines your bill. If your property is assessed higher than what it would actually sell for in today’s market, Grievance Day is your legal mechanism to correct it.
The process is free. No attorney required. Any Erie County property owner can file.
New York Real Property Tax Law §512 sets Grievance Day as the fourth Tuesday of May for most assessing units statewide. In 2026, that falls on May 26. Individual municipalities may adopt alternate dates by local law — a list is maintained at tax.ny.gov → — but most Erie County towns follow the standard fourth Tuesday date. Always confirm with your specific assessor’s office before filing.
Your Form RP-524 and all supporting documentation must be physically received by your local Board of Assessment Review or assessor’s office by close of business on May 26, 2026. Postmarking by that date is not sufficient. If you plan to mail your filing, allow ample delivery time. Filing in person with a time-stamped receipt is the safest approach. Miss this deadline and you cannot challenge your 2026 assessment — you wait until May 2027. Call your local assessor to confirm hours and delivery address: (716) 858-8333.
How to File Your Erie County Assessment Grievance — Step by Step
In most Erie County towns, the Tentative Assessment Roll is published around May 1. Find your property’s assessed value and compare it to what similar homes in your neighborhood have recently sold for — adjusted for your town’s equalization rate. If your assessed value is significantly higher than market value implies, you likely have a case. Contact Erie County Real Property Tax Services at (716) 858-8333 if you need help understanding your assessment notice.
The stronger your documentation, the stronger your case. Bring what you have:
- Your current assessment notice showing this year’s assessed value
- A recent appraisal from a licensed NYS appraiser showing market value below your assessment
- Printouts of 3+ comparable sales of similar homes in your neighborhood that sold for less than your assessed value implies
- Condition documentation — contractor estimates, inspection reports, photos of issues that reduce value
- Comparable assessment records of similar nearby properties if arguing unequal assessment
Get Form RP-524 (Complaint on Real Property Assessment) from your local town assessor’s office or as a free PDF at tax.ny.gov →. Complete your property information and select your ground for complaint — overvaluation (assessed above market value) is the most common ground for residential properties. Attach all supporting documentation. If you want to authorize a representative, complete Part Four.
Deliver your completed RP-524 and all attachments to your local Board of Assessment Review or assessor’s office no later than May 26, 2026. Filing in person and getting a time-stamped receipt is the safest approach. If mailing, send well before the deadline via certified mail. Check whether your specific municipality offers online filing — some Erie County towns do, some do not. Confirm with your local assessor’s office before assuming online is available.
After Grievance Day, the Board of Assessment Review schedules formal hearings. You may attend in person to present your evidence, or authorize a representative. The assessor will also be present. The BAR issues a written determination — typically within a few weeks. You do not need an attorney for this stage.
For the full technical walkthrough including SCAR and Article 7 judicial review, see our complete RP-524 challenge guide →
What Happens If Your Grievance Is Successful
If the Board of Assessment Review agrees your property is overassessed, they reduce your assessed value on the final assessment roll. That lower assessed value then determines your tax bill for the coming tax year — typically affecting your October school tax and the following February’s town and county tax. Erie County generally processes BAR determinations and publishes the Final Assessment Roll by July 1. The savings compound annually as long as the reduced assessment holds.
If the BAR determination does not provide adequate relief, you may pursue SCAR (Small Claims Assessment Review) — a simplified Supreme Court process available to most residential property owners, typically filed within 30 days of the Final Assessment Roll. No attorney required. SCAR petitions in Erie County are filed with the Erie County Clerk’s office, 25 Delaware Ave, Buffalo NY 14202, by July 30. See the full process at our assessment challenge guide →
A successful grievance reduces future tax bills. It does not eliminate back taxes already owed, remove penalties that have compounded on delinquent balances, or address the situation if the property has become fundamentally unaffordable. If significant delinquency has already accrued, the formal grievance process is often not enough on its own.
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Grievance Day Erie County NY 2026 — FAQ
When is Grievance Day in Erie County NY 2026?
Grievance Day in Erie County NY in 2026 is Tuesday, May 26, 2026 — the fourth Tuesday of May per New York Real Property Tax Law §512. Your Form RP-524 must be received by your local Board of Assessment Review by that date. Some Erie County towns may have adopted alternate Grievance Days by local law — confirm with your specific assessor’s office. Erie County Real Property Tax Services: (716) 858-8333 · 95 Franklin St, Buffalo NY 14202.
How do I file a tax grievance in Erie County NY?
Complete Form RP-524 (Complaint on Real Property Assessment), available free at tax.ny.gov or from your local town assessor. Attach supporting evidence — a recent appraisal, comparable sales, or condition documentation. File with your local Board of Assessment Review by May 26, 2026. The form must be received, not just postmarked. File in the municipality where the property is located. No attorney required and no filing fee for the BAR stage.
What form do I need for Grievance Day in New York?
The form is Form RP-524, the official New York State Complaint on Real Property Assessment. It is free from your local town assessor’s office or as a PDF at tax.ny.gov. Complete your property identification, select your complaint ground (overvaluation is most common for residential), and attach all supporting documentation before the May 26, 2026 deadline.
Can I file online for Erie County tax grievance?
Online filing availability varies by municipality in Erie County. Some towns have implemented electronic submission; others still require in-person or mail delivery. Contact your local town assessor’s office directly to confirm whether online filing is available. Regardless of submission method, your filing must be received by May 26, 2026. Do not assume online is available without confirming. Erie County Real Property Tax Services can direct you to your local assessor: (716) 858-8333.
What if I can’t afford my property taxes in Buffalo or Erie County?
If your property taxes have been building for years and a one-day hearing isn’t enough to turn it around — NCB buys houses in Erie County and Buffalo with back taxes included. All delinquent taxes, penalties, and interest are paid at closing from sale proceeds through a licensed Erie County title company. Nothing out of pocket. Cash offer in 24 hours. See how that works → or call (716) 557-7005. Also see: are you behind on property taxes — Erie County options →
What if the Board of Assessment Review denies my grievance?
If the BAR determination does not provide adequate relief, you may file a SCAR (Small Claims Assessment Review) petition in New York Supreme Court — available to most residential property owners without an attorney. SCAR petitions in Erie County must be filed with the Erie County Clerk’s office (25 Delaware Ave, Buffalo NY 14202) by July 30. For more complex disputes, an Article 7 tax certiorari proceeding with an attorney is available within the same window. See our full RP-524, SCAR and Article 7 guide →
Property Tax Distress — Related Resources
Nickel City Buyers — Grievance Day Erie County NY 2026 — Property Tax Resource — Cash Buyer Since 2013
Nickel City Buyers, LLC buys homes from Erie County homeowners at any stage of property tax delinquency. All back taxes, penalties, and interest paid at closing through a licensed Erie County title company. Nothing out of pocket. 3842 Harlem Rd STE 400-339, Cheektowaga, NY 14215 · (716) 557-7005 · A+ BBB · 5.0 Google · 33 reviews · 300+ WNY homes since 2013. Grievance Day 2026: Tuesday, May 26, 2026 (fourth Tuesday of May per RPTL §512). Erie County Real Property Tax Services: www2.erie.gov/ecrpts · (716) 858-8333 · 95 Franklin St, Buffalo NY 14202. Form RP-524: tax.ny.gov. SCAR Erie County: 25 Delaware Ave, Buffalo NY 14202 · deadline July 30. Serving Buffalo, Cheektowaga, Amherst, Tonawanda, West Seneca, Lackawanna, Hamburg, Orchard Park, Lancaster, Depew, Kenmore, Williamsville, East Aurora, Clarence, Grand Island, Akron, Colden, Newfane, Pendleton, and all of Erie and Niagara County.
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