Deadlines are fixed by law and cannot be extended. Applications must be received (not postmarked) by the deadline. The deadline depends on what you are appealing and the property's tax class.

If you’re not sure which tax class your property is in, you can find out on the Property Value and Assessment page. 

The deadlines to file an appeal of assessed value, tax class, or denied commercial and not-for-profit exemptions are:

• Class 1 properties: March 15, 2021
• All other properties: March 1, 2021

To appeal the Department of Finance (DOF)'s assessed value or tax class or the denial of a not-for-profit exemption, you must file a completed, appeal form and all necessary proof to the NYC Tax Commission in person or by mail.

If you're thinking about appealing your property assessment, you should first read the brochure How to Appeal a Tentative Assessment (TC600).

Completing the Application

Your appeal may be denied if your application isn’t completed properly, so be sure to use the correct form, read the questions, answer all questions completely, and provide any necessary proof. Please include your email address, or your telephone number along with your application.

Make sure that you:

• Identify the property
• State your relationship to the property or the property owner
• Enter your estimate of your property's market value
• Don’t leave out any information or fail to complete required fields
• Fill out the application in ink or type, not pencil
• Don’t submit a duplicate application
• Sign the application (must be original signature)
• Have the form notarized (with original signature) (Not required for tax class 1 properties)
• File a complete, correct Tax Commission Income and Expense (TCIE) form by the deadline, if required, as well as any other supplemental forms and documents the Tax Commission instructions require

If you don’t follow the application directions, your appeal hearing request may be denied.

To learn more, read the brochure How to Appeal a Tentative Assessment (TC600).

Fee

The Tax Commission charges a $175 fee for each assessment review held for properties with an assessed value of 2 million dollars or more. The charge will appear on your property tax bill.

Submitting the Application

The Tax Commission accepts appeal applications by mail or in person.

By Mail

Your mailed application must be received—not postmarked—by the deadline.

If you decide to appeal, you must complete the Application for Correction of Assessed Value relevant to the type of appeal you wish to file.

If you're delivering your appeal in person, you should also complete and bring form TC10. The Tax Commission will stamp the TC10, so that you l can keep it as your receipt to prove you filed your application on time. If you mail your appeal, include a self-addressed stamped TC10. If you email your appeal, you will be emailed an acknowledgment of receipt, which does not mean that your submission has been reviewed and deemed complete.

You can download the forms online or pick them up in person at the Tax Commission Office or a DOF Business Center.

Online

Get Tax Commission forms and instructions.

On your application, you can request that your appeal be reviewed on the information in the application without a personal hearing or you can request an in-person hearing. You will be contacted if you request an in-person hearing but one cannot be held due to COVID-19 precautions.

The Tax Commission will review your application and determine whether to grant you a hearing. Hearing decisions are based on the application, documentation, and other proof you submit. Your hearing request may be denied if the application is not completed properly.

After the Tax Commission holds a hearing, they will mail you a notice with their determination.

In-Person Hearings

If you are granted an in-person hearing, the Tax Commission will notify you of the scheduled date and time. You don’t need a lawyer to file an appeal and can send a representative to the hearing for you. If no one appears at the scheduled hearing, your appeal will be denied.

You’ll be notified when the Tax Commission has reviewed your appeal.

If you haven’t gotten a letter from the Tax Commission about your appeal by July 1, you can contact them for the status.

By Mail

After receiving your application, the Tax Commission may deny your hearing request for any or some of the following reasons:

• The property wasn’t identified
• The application was filed late
• The application was filled out in pencil
• A duplicate application wasn’t withdrawn
• You requested an appeal on an abatement denial
• You were required to file a Real Property Income and Expense (RPIE) form but didn’t
• You were required to file an RPIE form, but didn’t do it on time
• You were required to file a Tax Commission Income and Expense (TCIE) form but didn't
• Your TCIE form was late, incomplete, defective, or old
• You left out information on your application or your application was incomplete
• No reason was given for applying or no error was claimed on the application
• You didn’t state what you think the property is worth
• Your application for a Class 2, 3, or 4 property wasn’t notarized
• Your signature and/or the notary's signature wasn’t an original
• You aren’t the property's owner or aren’t responsible for paying the entire building's property tax
• You lack the authority or power of attorney
• You have a defective or old power of attorney
• The application was signed by an agent who has no personal knowledge of the property
• Your relationship to the property or the property owner wasn’t stated

If you receive and choose to accept a Notice of Offer and Acceptance Agreement from the Tax Commission, you must sign and return it within the stated time period (usually 45 days).

It usually takes about two weeks from the time that the Tax Commission enters any agreed upon change until you receive a Revised Notice of Property Value from the Department of Finance. You may receive a Revised NOPV anytime between the issuance of your Notice of Property Value in mid-January and the posting of the Final Assessment Roll, which happens at the end of May. For more information about the Revised NOPV, go to the Property Value and Assessment page.

When the Tax Commission grants an appeal of an exemption denial or revocation, the exemption is granted to the taxpayer for one year. You must then reapply for the exemption with the Department of Finance the following year.

If you accepted, signed, and mailed the Notice of Offer and Acceptance Agreement letter back to the Tax Commission more than 30 days ago and haven’t received a response, you can request the status from the Department of Finance.

You can appeal the Tax Commission's decision if you filed a valid appeal application on time and:

• Received a denial from the Tax Commission, or
• Choose not to accept the Tax Commission's offer

Owner-Occupied 1-, 2-, or 3-Family Homes

If you own and live in a 1-, 2-, or 3-family home, you may file a Small Claims Assessment Review Petition (SCARP) in New York State Supreme Court.

SCARP forms are available at City County Clerk’s offices, which are located inside the borough Supreme Court buildings. Visit the County Clerk page for locations.

After completing the form, you must go the Supreme Court in the borough where the property is located to submit it. You must also serve a copy of the petition on the Tax Commission.

In 2021, petitions must be filed in person or postmarked by Friday, October 24.

You can learn more about SCARP proceedings in the brochure that the Tax Commission included with their decision (TC708). You can also download a copy online.

Get Tax Commission forms and instructions.

All Other Properties

For class 2 and 4 properties, as well as 1-, 2-, or 3-family homes you don’t live in, you may file an Article 7 Petition in New York State Supreme Court. You can learn more about Article 7 Petitions in Form TC707.

Get Tax Commission forms and instructions.

NOPV Information and Assistance

To learn about NOPVs and how the City assesses your property and calculates your taxes, view a glossary of terms, and access other resources visit the Property Value and Assessment page.

You can learn about your NOPV at a virtual outreach session. Learn more and get the list of events on the Department of Finance Public Events page.