NYC-EXT - APPLICATION FOR AUTOMATIC EXTENSION OF TIME TO FILE BUSINESS INCOME TAX RETURNS - 2025

Sep 19, 2026

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NYC-EXT 2025 is an application form used to request an automatic extension of time to file New York City business income tax returns. The form collects taxpayer identity details, business address, and employer identification numbers, along with the applicable tax type selection (corporation tax or unincorporated business tax). It also includes payment information to support the extension period, along with certification and signature requirements by the taxpayer or an authorized corporate officer.

LanguageEnglish

CategoryForms

FormatPDF

Pages4

Reading Time2 min

AccessFree to download

Tax Type

Business Information

Employer Identification Number / SSN

Tax Selection (Corporation Tax / UBT)

Payment Information

Certification and Signature

Instructions

Legislative Changes

Special Condition Codes

Requirements for a Valid New York City Extension

*31212591* Tax Type -EXT APPLICATION FOR AUTOMATIC EXTENSION OF TIME TO FILE BUSINESS INCOME TAX RETURNS 2025 PRINT OR TYPE n Final Return-Check this box if you have ceased operations in NYC. For CALENDAR YEAR 2025 or Fiscal Year beginning , 2025 and ending , | Name (if combined corporate filer, give name of reporting corporation) Name
Change | | | | n | | --- | --- | --- | --- | --- | | In Care of | | | | | | Unincorporated Business-Individuals Only | First Name | Last Name
NameChange n | | | | Business address (number and street)
AddCharessnge n | | | | | | City and State | | Zip Code | Country (if not US) | | | Business Telephone Number | | Email Address | | | | EMPLOYER IDENTIFICATION NUMBER: Please enter entire 9-digit EIN

OR
SOCIAL SECURITY NUMBER:
(FOR UNINCORPORATED BUSINESS-INDIVIDUALS ONLY)

BUSINESS CODE NUMBER AS PER FEDERAL RETURN:
| | | --- | --- | | nn | Enter 2‑character special condition code, if applicable (see instructions) | | Corporation Tax | | | Unincorporated Business Tax (UBT) | | | --- | --- | --- | --- | --- | | n Business C Corporations only | n General-Subchapter S Corporations and Qualified Subchapter S Subsidiaries only | n Banking Subchapter S Corporations only | n Partnership | n Individuals
Single-Member LLCs, Estates or Trusts | | NYC-2
NYC-2A
NYC-2S | NYC-3L
NYC-3A
NYC-4S
NYC-4SEZ | NYC-1
NYC-1A | NYC-204
NYC-204EZ | NYC-202
NYC-202S
NYC-202EIN | | n Check the box if the organization is a corporation and is the common parent of a group that intends to file a combined return. If checked, attach a schedule, listing the name, address and Employer Identification Number (EIN) for each member covered by this application. | | | | | Payment Information | For payment amount, refer to the tax form for the tax that you will be filing after the extension period. Finance forms and instructions are available on [line at](line at NYC.gov/finance)[ NYC.gov/finance](line at NYC.gov/finance).

Payment Amount | | | | | --- | --- | --- | --- | | A. Payment | Amount included with form.
Make payable to: NYC Department of Finance........................A. | | | | 1. Current Year Estimated Tax ...................................................................... 1
2. If amount on line 1 exceeds $1,000, enter 25% of line 1
(For S Corporations only--UBT and C Corporations leave blank
and see instructions) ................................................................................. 2.________________________________
3. Total of lines 1 and 2 ................................................................................. 3.________________________________
4. Total payments and credits ....................................................................... 4.
5. Balance due. Subtract line 4 from line 3 ................................................... 5 | | | | | CERTIFICATION OF TAXPAYER OR OF AN ELECTED OFFICER OF THE CORPORATION | | --- | | I hereby certify that this form, including any accompanying rider, is, to the best of my knowledge and belief, true, correct and complete.
SIGN HERE:
Signature:
Title (if an officer):
Date: | 31212591 NYC-EXT 2025 INSTRUCTIONS Legislative Changes The Corporation Tax, as used in these instructions, refers to the Business Corporation Tax under Subchapter 3-A, General Corporation Tax under Subchapter 2 and Banking Corporation Tax under Part 4 of Subchapter 3 of Chapter 6 of Title 11 of the NYC Administrative Code. See the instructions to Forms NYC-2, NYC-2A, NYC-2S, NYC-3L, NYC-3A, NYC-4S, NYC-4S-EZ, NYC-1 and NYC-1A for legislative changes affecting the calculation of the Corporation Tax. See the instructions to Forms NYC-202, NYC- 202EIN and NYC-204 for legislative changes affecting the calculation of the Unincorporated Business Tax (UBT) . Special Condition Codes At the time this form

FAQs

What is NYC-EXT 2025 used for?

NYC-EXT 2025 is used to request an automatic extension of time to file a completed NYC business income tax return.

How does the extension payment requirement work?

If filed on or before the due date, you automatically receive a six-month extension after the due date when you properly estimate the tax and send the remittance shown on line 5.

Can a corporation request additional extensions using NYC-EXT 2025?

Yes. After receiving the automatic six-month extension, a corporate taxpayer may request up to two additional three-month extensions by filing NYC-EXT.1, one form per requested extension.

Sep 19, 2026

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