This gives you until October 15 to file without penalties. Use the following information to generate the Form IT-370, Application for Extension of Time to File.There are various approaches to preparing an extension. New York State offers a 6-month extension, which moves the individual filing deadline from April 15 to October 15 (for calendar year filers). An extension of time to file your federal tax return or. New York State Franchise Tax return does NOT ex- tend the filing date of your New York City tax return. Option 3: Fill out Form IT-370 and mail it to the address provided, along with a check or money order. NY IT370 Extension Form. To indicate in the main return that a payment was made with the extension, from the New York state return menu select:. NYS Tax Department: Tax Tips for Individuals—Need more time to file?