New York · Do-it-yourself · $29

Appeal your New York property taxes yourself.

A guided workbook for homeowners preparing their own appeal. Turn your notice, property records and supporting documents into an organized filing plan.

Have a notice or a property-record question? Start with a plan.

The $29 kit helps you check what needs investigating, organize the evidence you collect, and work through the filing steps. Use it if you want a structure for doing the preparation yourself.

Need property-specific evidence first? Check available records for your address free. The kit does not determine whether you are overassessed or supply comparable properties. You verify your local requirements and file yourself.

The New York DIY Appeal Kit
Work from a checklist instead of a blank page: review your notice, assemble supporting documents, and prepare your letter. $29, paid once.
  • State-specific process guidance with official-source links
  • Evidence organizer and filing checklist
  • Ready-to-edit appeal-letter template
Instant PDF, emailed on purchase · Secure checkout by Stripe · 30-day money-back guarantee

No setup required to buy. Add optional details below for a personalized PDF, or complete the editable fields yourself after download. See a completed preparation example.

Turn your question into an organized preparation draft

Get a preparation plan, the New York process guide, three fillable worksheets and an editable letter. Optional setup below carries your question and document list into the paid PDF.

Personalize your included letter and evidence organizer

Text-based PDF, up to 8 MB / 10 pages. Your file stays in this browser. Only details you confirm are included in your order. Photos and scanned notices currently need manual entry.

Copy details from your assessment notice. We use these to prepare your letter draft, worksheets and evidence list. These are your entries, not a verified property analysis. You can also buy now and fill them in later.

Start by checking the property facts and valuation basis. Record a specific question before choosing supporting evidence. Preparation does not reopen an expired filing window.

Optional notes are included in your purchase record and PDF. Do not include sensitive documents, account credentials or other people’s personal information.

Your filing route to verify

your assessor or Board of Assessment Review (or the NYC Tax Commission / Nassau County ARC, see below)

Form RP-524

This is the New York statewide route. Your county may use its own office, deadline or fee, so confirm those against your assessment notice or the official directory before you file. The jurisdiction exceptions in this guide list the ones we hold.

Open official filing instructions
Add evidence you have already found (optional)

We organize your entries in the paid PDF; we do not verify them or generate comparable sales in the $29 kit. For each record include the address, sale price or assessment, date, official source and why it is relevant. Use the correct valuation date and local evidence rules.

Your New York purchase preview

Add your property above to preview your preparation package

Buyer-supplied details · not a verified property match or finding of overassessment

  • Letter draft: editable owner-name field.
  • Preparation plan: i am preparing or am not sure yet.
  • Evidence organizer: 0 of your records supplied; editable worksheets included.
  • Filing instructions: your assessor or Board of Assessment Review (or the NYC Tax Commission / Nassau County ARC, see below); confirm your local form and deadline.
  • Official form autofill is not included for this location. Your kit links to the official filing resources.

Unlocked after purchase: complete state guide, personalized letter draft, preparation plan and editable evidence worksheets.

Still yours to do: verify the facts and deadline, obtain supporting evidence, finish required forms, sign and file. The $29 kit does not establish overassessment or include researched comparable sales. Government forms are free; you pay for the preparation package.

PARTIAL SAMPLE · New York DIY kit

See an organized preparation draft

Fictional teaching example: a property record lists 2,400 square feet; the owner’s floor plan lists 2,000. This is a question to investigate, not proof of overassessment or a savings estimate.

See the completed example and what you receive

What we prepare — and where it comes from

  • State guide and filing checklist: official-source links and verification steps.
  • Editable letter and preparation plan: your optional confirmed entries, with editable fields for missing details.
  • Evidence organizer: the records you supply, with space for source, date and relevance. We do not research or verify comparable properties in this kit.

You finish: verify your facts and deadline, collect and attach actual records, complete required official forms, sign and file. Government forms are free.

Need researched property evidence? Preview the separate $49 Audit where supporting records are available.

1. Define the question. Compare the area definitions, dates and source documents before assuming either number is correct.

Notice worksheet: property-record errors to verify

“The two area figures differ. Check whether they measure the same space, and verify the current property record before requesting a correction.”

2. Make an evidence list. Use the filing tracker to separate documents you have from documents you still need.

Filing tracker: evidence index

“To collect and label: current property record, dated floor plan and any measurements needed to resolve the difference. Record each source, date and page number.”

Example preparation summary · fictional, not filed

Question: Do the two area figures use the same measurement definition?

Document index: A — current property record; B — dated floor plan. Add source dates and page numbers before relying on either.

Unresolved: measurement basis, current facts and the appropriate local correction or appeal route.

Next action: verify those points with the official local source before making a correction request.

The useful result: one defined issue and a document checklist. You still verify the facts and the correct local filing route. No correction or tax reduction has been established in this example.

These illustrative entries show how to use two fields in the paid worksheets. The paid PDF carries your optional question and document list into editable worksheets and adds a preparation plan for your selected starting point. It does not contain this fictional property or a verified case for your home.

Your starting details

The notice worksheet also helps you record:

  • Property address and parcel identifier
  • State, county, township and reviewing body
  • Assessment year and valuation date

Make this preparation package your own

Add your name, property details and question before buying. Your entries become a personalized letter draft and preparation plan in the paid PDF. You can edit them later; no need to start with an empty letter.

See setup and purchase options · $29

Preview your setup before checkout. You gather and verify evidence, complete required local forms, and file yourself.

After purchase: your preparation plan, the complete state guide, three fillable worksheets, official-source links and editable appeal letter. The full evidence organizer and letter are not included in this excerpt. You gather evidence and file yourself.

Prepare your New York property tax appeal

Have a current notice? Check its deadline and reviewing office, verify the property details, then organize evidence that supports the correction you are requesting. Confirm official forms and fees before filing.

Preparing for a future window? Use the worksheets to review property records, list errors to investigate and plan your evidence. Buying now does not reopen a closed deadline or guarantee lower taxes.

The kit organizes those steps into a reusable guide and worksheets. It does not find comparable properties for you, file an appeal or replace your local authority’s instructions.

See what comes in the $29 DIY kit

See the Illinois worksheets and evidence organizer. This September 12 walkthrough shows an earlier kit version; today’s kit also personalizes your preparation plan and editable letter from the details you provide. State requirements differ.

42 seconds · Narrated and captioned · Plays when you choose

See the current kit sample for this state →

Read the video transcript

Want to appeal your property assessment without starting from a blank page? Here is what AppealMyTax's $29 DIY kit includes: a guide to the process, a worksheet to check your notice and deadline, fillable fields to organize comparable-property research and supporting evidence, a filing and hearing tracker, and an appeal letter you can copy and customize. Choose your state and pay once. Your kit is delivered by email. You gather the evidence, confirm your local requirements, and file yourself. See what is included at AppealMyTax.

On screen: pages from the Illinois kit, including its notice/deadline worksheet, evidence organizer and filing/hearing tracker. You complete required forms and file yourself.

How a New York appeal works

The short version, free. The paid kit adds the evidence workbook, filing controls, and editable letter.

  1. New York calls it a grievance. It is free, needs no lawyer, and runs at the municipal level on Form RP-524.
  2. Grievance Day is the fourth Tuesday in May in MOST towns, but Westchester is the third Tuesday in June, Suffolk the third Tuesday in May, and villages that assess are typically the third Tuesday in February. Confirm yours with your assessor.
  3. New York City (March 15 Class One / March 1 others, NYC Tax Commission) and Nassau County (March 1, ARC) do not use this process at all.
  4. Most homeowners win on unequal assessment: your assessment ÷ your municipality's level of assessment is the assessor's implied market value. Beat that with comparable sales.

What to check on your assessment notice

  • Your TOTAL assessed value on the tentative roll. You cannot grieve the land value by itself.
  • Your municipality's level of assessment. Take the LOWEST of the equalization rate, the residential assessment ratio (RAR), and the uniform percentage of value printed on the roll.
  • Your Grievance Day. It is not a statewide date and the fourth-Tuesday-in-May rule is wrong in a lot of New York.
  • The reduction you intend to request. Asking too little can bar you from getting more later.

Official lookup: NYS municipal profiles: your assessor, equalization rate, and RAR →

What’s inside

✓A plain-English New York grievance walkthrough, from tentative roll to Board of Assessment Review.
✓How to find YOUR municipality's Grievance Day, with every published exception (Westchester, Suffolk, villages, shared-assessor towns, cities).
✓Dedicated sections for New York City (Tax Commission, March 15 / March 1, TC108 and TC101) and Nassau County (ARC and AROW, March 1): different agencies, forms, and deadlines.
✓The equalization rate and RAR arithmetic for an unequal-assessment claim, worked through with the state's own example.
✓How to complete each part of Form RP-524, including the grounds options and the reduction-amount trap.
✓An evidence checklist built on what the state says actually supports a residential case.
✓A ready-to-edit complaint citing the right Real Property Tax Law sections.
✓What comes next: stipulations, the BAR hearing, SCAR eligibility, and the 30-day judicial-review clock.

How it works

  1. Buy the kit — the PDF lands in your inbox instantly.
  2. Confirm YOUR municipality's Grievance Day with your assessor before anything else. It is the fourth Tuesday in May in most towns, but Westchester, Suffolk, villages, New York City, and Nassau County all differ.
  3. Gather the evidence on the checklist and edit the appeal-letter template.
  4. File the current instrument required by your assessor or Board of Assessment Review (or the NYC Tax Commission / Nassau County ARC, see below) before your deadline.

Different process where you live?

New York is not one system. These jurisdictions have local filing routes, forms or deadlines that can differ from the statewide overview. The kit covers each one in its own section.

New York City
All property in the five boroughs (Manhattan, Bronx, Brooklyn, Queens, Staten Island). If your property is in NYC, everything above about Grievance Day and the Board of Assessment Review does NOT apply to you.
Deadline
March 15 for Class One property (most one, two, and three family homes) and March 1 for Classes Two, Three, and Four. These dates are set by the City Charter and, in the Tax Commission's own words, cannot be waived or extended for any reason. When the date falls on a weekend or holiday it moves to the next business day, so confirm the exact date for the current year before you file.
Filed with
The New York City Tax Commission, an independent agency, under NYC Charter chapter 7. Phone 212-669-4410. (The Department of Finance sets the assessment; the Tax Commission reviews it.)
Form
Form TC108 for Class One property of all types, including Class One condominiums. Form TC101 for Class Two or Class Four property except condominiums.
Nassau County
All property in Nassau County. Nassau runs a county-wide assessment review system, so the town-level Grievance Day process described above does not apply to you.
Deadline
March 1 is the statutory date, and the filing window opens in early January. But ARC has repeatedly EXTENDED it. Recent years have run to the first business day of March, and the 2026 window was extended to March 31. Never assume the extension will be granted, and never assume it will not: confirm the current year's actual closing date with ARC before you file.
Filed with
The Nassau County Assessment Review Commission (ARC), which meets throughout the year. Phone 516-571-3214.
Form
An application to ARC, filed online through AROW (Assessment Review on the Web) or on ARC's own paper form. Not Form RP-524.
Deadline: There is no single New York deadline, and this is the part people get wrong. In most communities Grievance Day is the FOURTH TUESDAY IN MAY, and Form RP-524 must be RECEIVED by the assessor or Board of Assessment Review by that day. Mailing it that morning is not enough. The published exceptions: cities and towns that share an assessor may adopt any Grievance Day between the fourth Tuesday in May and the second Tuesday in June; Suffolk County town boards meet the third Tuesday in May; WESTCHESTER County town boards meet the THIRD TUESDAY IN JUNE; villages that assess property typically meet the third Tuesday in February, though dates vary; other cities vary and you must ask your assessor or city clerk. New York City requires filing by March 15 for Class One property and March 1 for all other classes, through the NYC Tax Commission. Nassau County requires filing by March 1, through the Assessment Review Commission. Only the assessment on the CURRENT tentative roll can be grieved (the tentative roll is completed May 1 in most communities), and missing your date costs you both administrative and judicial review for that year. Confirm your date with your assessor. It is one phone call and it is the whole appeal.

What New York charges to file

These are your county or state’s fees, not ours. Listed so there are no surprises.

  • Grievance before the Board of Assessment Review: no fee.
  • Small Claims Assessment Review (SCAR), after the BAR: $30.
  • Nassau County Assessment Review Commission: no fee.
  • NYC Tax Commission: no fee for most homes, but $175 where the assessed value on the Notice of Property Value is $2,000,000 or more.

Questions

Why is this $29 and not $49?
The Property Assessment Audit provides the filing or valuation output supported by your property's available evidence. Check your address and preview the available evidence before buying. This $29 kit is the state process guide, filing materials, evidence checklist, and appeal-letter template; you gather the property evidence yourself.
When is the New York property tax appeal deadline?
There is no single New York deadline, and this is the part people get wrong. In most communities Grievance Day is the FOURTH TUESDAY IN MAY, and Form RP-524 must be RECEIVED by the assessor or Board of Assessment Review by that day. Mailing it that morning is not enough. The published exceptions: cities and towns that share an assessor may adopt any Grievance Day between the fourth Tuesday in May and the second Tuesday in June; Suffolk County town boards meet the third Tuesday in May; WESTCHESTER County town boards meet the THIRD TUESDAY IN JUNE; villages that assess property typically meet the third Tuesday in February, though dates vary; other cities vary and you must ask your assessor or city clerk. New York City requires filing by March 15 for Class One property and March 1 for all other classes, through the NYC Tax Commission. Nassau County requires filing by March 1, through the Assessment Review Commission. Only the assessment on the CURRENT tentative roll can be grieved (the tentative roll is completed May 1 in most communities), and missing your date costs you both administrative and judicial review for that year. Confirm your date with your assessor. It is one phone call and it is the whole appeal.
What form do I file to appeal my New York property assessment?
Form RP-524 (Complaint on Real Property Assessment), filed with your assessor or Board of Assessment Review (or the NYC Tax Commission / Nassau County ARC, see below). The kit explains the filing steps and includes a ready-to-edit appeal letter.
Do you file the appeal for me?
No — this is a do-it-yourself product. You file with your assessor or Board of Assessment Review (or the NYC Tax Commission / Nassau County ARC, see below). The kit provides the preparation workflow, evidence organizer, filing checks, and ready-to-edit letter.
What if it doesn't help?
30-day money-back guarantee, no questions asked. If the kit isn't useful, reply to your delivery email and we'll refund you.
Is this legal or tax advice?
No. It's general information to help you file your own appeal. Always rely on the date and instructions printed on your own assessment notice and confirm current requirements with your county.
Get the New York DIY Appeal Kit — $29 ↑