New York Tax Extension Rules and Filing Deadlines

Running out of time before the New York deadline? Six more months are available, and getting them takes one form. The catch is that New York will not take the federal extension you may already have, so the form is not optional for anyone.

Filing IRS Form 4868 with the IRS does nothing for your New York State income tax return. Every individual taxpayer who wants more time files Form IT-370 with New York separately.

This page covers individual filers submitting a New York resident income tax return on Form IT-201, or the nonresident and part-year equivalent. For the federal side of the process, see our guide to filing a tax extension, and for everything else New York, see the New York state tax guide. For other states, start at the state tax extension hub.

Expert Insight

Andrew Walsh, CPA, CFP®, CTFA
CPA, CFP CTFA & Tax Content Specialist

---

New York state is stricter than others requiring its own extension form and requiring a full estimated extension payment due April 15th. The penalties and interest are dollars wasted for getting the calculation wrong so do your best and take a conservative approach in estimating and paying your extension tax bill. Once done you can take time to make sure the entirety of your return is accurate before the final filing.

How Does a New York Tax Extension Work?

Form IT-370 is the Application for Automatic Six-Month Extension of Time to File for Individuals. File it by the original due date and the automatic extension is granted with no approval step, which moves your filing deadline from April 15, 2026 to an extended due date of October 15, 2026.

New York Will Not Take Your Federal Extension

New York states its position in the IT-370 instructions, and it leaves no room to read it another way: "Do not submit a copy of the federal extension form. We will not accept it in place of Form IT-370."

So IRS Form 4868 buys you time with the IRS and nothing else. The extension request to New York is a separate filing, and skipping it leaves your state return late even when your federal one is not.

New York City and Yonkers Taxes Ride on the Same Form

Anyone paying city tax on top of state tax gets a useful piece of news here. The IT-370 worksheet carries its own lines for New York City income tax liability and Yonkers income tax liability, so one form covers all three.

You do still have to work those amounts out before you file, since the balance you pay has to include them.

How Do You File a New York Tax Extension?

Step 1: Estimate what you owe

Gather your W-2 and 1099 forms, confirm your filing status, and work out your expected New York State income tax liability for the year, adding New York City tax and Yonkers tax if either applies to you. Subtract your withholding and any estimated tax already paid. Your prior-year return is a reasonable starting point if this year looks similar.

Step 2: Pay the full balance, not a percentage

New York asks for full payment of the properly estimated tax balance due. No safe harbor percentage sits underneath it, so the number you send should be your genuine best estimate of the whole amount.

Underestimating exposes you to penalties on the shortfall, so err upward rather than downward where the figure is uncertain.

Step 3: File Form IT-370 and make the tax payment by April 15, 2026

New York takes the extension request online, and paying that way is the cleaner route. You can make an electronic payment directly from a bank account, or an online payment by credit card.

If you prefer mail filing, send the form with a check or money order to:

NYS Personal Income Tax Processing Center
PO Box 4125
Binghamton NY 13902-4125

Fill in your entire Social Security number. The instructions warn that an incomplete one may invalidate the extension, which is an unusually cheap way to lose it.

Step 4: Keep the confirmation and file by October 15

Hold your payment confirmation with your copy of the form. Then file the completed IT-201 by October 15, 2026.

How Much Should You Pay With an Extension?

Send the whole balance. New York charges on the shortfall from the original due date, and it charges twice over if the return is late as well.

Say your combined New York State and New York City liability comes to $5,000 and your withholding covered $4,400. The $600 remainder is due April 15, 2026 even though the return itself is not due until October. Send it with the IT-370 and the extension costs you nothing beyond the tax.

Our penalty and interest calculator can help you estimate what a shortfall would cost.

Filing Late Costs Ten Times What Paying Late Costs

New York runs two charges at very different rates, which makes filing the return the more urgent of the two obligations.

Late filing runs at 5 percent of the tax due for each month or part of a month, capped at 25 percent. Late payment runs at one half of 1 percent of the unpaid amount for each month or part of a month, capped at the same 25 percent.

On a $600 balance that is $30 a month against $3 a month. Filing on time while paying late is a far cheaper mistake than the reverse.

New York Resets Its Interest Rate Every Quarter

Interest accrues on top of either charge, compounded daily, and the rate moves through the year. For the first quarter of 2026 the late payment rate was 9.5 percent. For the second quarter, covering April 1 through June 30, it dropped to 8.5 percent. For the third quarter, covering July 1 through September 30, it rose to 9.5 percent, and it remains 9.5 percent for the fourth quarter, covering October 1 through December 31.

A rate you looked up in January will already be wrong by the April deadline, so check the quarter you are actually in rather than carrying a figure forward.

New York Business Tax Extension Basics

Corporations, partnerships and multi-member LLCs extend federally on Form 7004. On the New York side the deadlines differ by entity rather than matching the individual one. Partnerships filing Form IT-204 get six months, to September 15, 2026. Fiduciaries filing Form IT-205 get five and a half, to September 30, 2026. New York corporations do not use Form IT-370 or Form 7004 for state taxes; they must file Form CT-5 (or CT-5.4) to obtain an automatic extension.

The payment rule above applies here too. How Form 7004 works and which deadline attaches to which entity are covered on the business extension guide.

Do Military Servicemembers Get More Time to File in New York?

Yes, and New York's combat zone relief is more generous than the ordinary extension in two ways.

Combat Zone Relief Stops the Interest, and You Claim It With a Code

Your deadline is automatically extended for at least 180 days after the later of your last day in the combat zone or your last day of hospitalization for an injury from that service, plus whatever days you had left when you entered. New York states that "no penalties or interest will be imposed for failure to file a return or pay taxes during the extension period."

That interest point matters. An ordinary New York extension leaves interest running daily. Combat zone relief stops it.

Claiming it takes one entry rather than a letter or an attachment. Enter special condition code C7 in the space provided on your return. Spouses and dependents get the same extension, with one limit: it stops applying for a tax year beginning more than two years after the area ceases to be a combat zone or contingency operation.

The combat zone tax extension page covers the federal rules underneath this.

Expert Insight

Lea Uradu, JD
Tax Content Reviewer

---

The single most common mistake taxpayers make with New York extensions is assuming the federal extension does the heavy lifting. Because New York strictly enforces separate filing requirements, taxpayers must follow the state's specific rules to stay compliant.

Common New York Extension Mistakes to Avoid

• Assuming Form 4868 covers New York. It does not, and New York will not accept a copy of it in place of Form IT-370.
• Paying a percentage of the balance. New York wants the properly estimated balance in full. There is no 90 percent threshold to aim at.
• Leaving New York City or Yonkers tax out of the estimate. Both belong in the amount you pay with the extension request.
• Entering a partial Social Security number. An incomplete one may invalidate the extension.
• Treating the filing deadline as the softer one. Late filing costs ten times what late payment costs each month.
• Carrying last quarter's interest rate. New York resets it quarterly and it moved between the first and second quarters of 2026.
• Skipping the C7 code on a combat zone return. That code is how New York applies the relief.

Compare New York Extension Rules With Other States

State tax extension rules vary across the country.

Some states automatically accept the federal extension, while others require a separate filing or payment process.

You can review extension guidance in these state resources:

• New Jersey tax extension
• Pennsylvania state tax extension
• Connecticut tax extension rules
• Massachusetts extension deadline

Filing Your New York Extension

New York asks for a separate filing where a federal extension might otherwise have done the job, and all of it happens in one place. Estimate the full balance including any New York City or Yonkers tax, file Form IT-370 with that payment by April 15, keep the confirmation, and file the IT-201 by October 15. The federal extension you may already hold plays no part in it.

File your federal extension with FileTax.com and we will walk you through the federal side, which stays separate from what New York needs from you.